erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #include "mips/lithium-codegen-mips.h" |
| 31 | #include "mips/lithium-gap-resolver-mips.h" |
| 32 | #include "code-stubs.h" |
| 33 | #include "stub-cache.h" |
| 34 | |
| 35 | namespace v8 { |
| 36 | namespace internal { |
| 37 | |
| 38 | |
| 39 | class SafepointGenerator : public CallWrapper { |
| 40 | public: |
| 41 | SafepointGenerator(LCodeGen* codegen, |
| 42 | LPointerMap* pointers, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 43 | Safepoint::DeoptMode mode) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 44 | : codegen_(codegen), |
| 45 | pointers_(pointers), |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 46 | deopt_mode_(mode) { } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 47 | virtual ~SafepointGenerator() { } |
| 48 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 49 | virtual void BeforeCall(int call_size) const { } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 50 | |
| 51 | virtual void AfterCall() const { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 52 | codegen_->RecordSafepoint(pointers_, deopt_mode_); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 53 | } |
| 54 | |
| 55 | private: |
| 56 | LCodeGen* codegen_; |
| 57 | LPointerMap* pointers_; |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 58 | Safepoint::DeoptMode deopt_mode_; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 59 | }; |
| 60 | |
| 61 | |
| 62 | #define __ masm()-> |
| 63 | |
| 64 | bool LCodeGen::GenerateCode() { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 65 | LPhase phase("Z_Code generation", chunk()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 66 | ASSERT(is_unused()); |
| 67 | status_ = GENERATING; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 68 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 69 | // Open a frame scope to indicate that there is a frame on the stack. The |
| 70 | // NONE indicates that the scope shouldn't actually generate code to set up |
| 71 | // the frame (that is done in GeneratePrologue). |
| 72 | FrameScope frame_scope(masm_, StackFrame::NONE); |
| 73 | |
| 74 | return GeneratePrologue() && |
| 75 | GenerateBody() && |
| 76 | GenerateDeferredCode() && |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 77 | GenerateDeoptJumpTable() && |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 78 | GenerateSafepointTable(); |
| 79 | } |
| 80 | |
| 81 | |
| 82 | void LCodeGen::FinishCode(Handle<Code> code) { |
| 83 | ASSERT(is_done()); |
| 84 | code->set_stack_slots(GetStackSlotCount()); |
| 85 | code->set_safepoint_table_offset(safepoints_.GetCodeOffset()); |
ulan@chromium.org | 6ba1fd0 | 2013-02-14 14:56:11 +0000 | [diff] [blame] | 86 | if (FLAG_weak_embedded_maps_in_optimized_code) { |
| 87 | RegisterDependentCodeForEmbeddedMaps(code); |
| 88 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 89 | PopulateDeoptimizationData(code); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 90 | info()->CommitDependencies(code); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 94 | void LChunkBuilder::Abort(const char* reason) { |
| 95 | info()->set_bailout_reason(reason); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 96 | status_ = ABORTED; |
| 97 | } |
| 98 | |
| 99 | |
| 100 | void LCodeGen::Comment(const char* format, ...) { |
| 101 | if (!FLAG_code_comments) return; |
| 102 | char buffer[4 * KB]; |
| 103 | StringBuilder builder(buffer, ARRAY_SIZE(buffer)); |
| 104 | va_list arguments; |
| 105 | va_start(arguments, format); |
| 106 | builder.AddFormattedList(format, arguments); |
| 107 | va_end(arguments); |
| 108 | |
| 109 | // Copy the string before recording it in the assembler to avoid |
| 110 | // issues when the stack allocated buffer goes out of scope. |
| 111 | size_t length = builder.position(); |
| 112 | Vector<char> copy = Vector<char>::New(length + 1); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 113 | OS::MemCopy(copy.start(), builder.Finalize(), copy.length()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 114 | masm()->RecordComment(copy.start()); |
| 115 | } |
| 116 | |
| 117 | |
| 118 | bool LCodeGen::GeneratePrologue() { |
| 119 | ASSERT(is_generating()); |
| 120 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 121 | if (info()->IsOptimizing()) { |
| 122 | ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 123 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 124 | #ifdef DEBUG |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 125 | if (strlen(FLAG_stop_at) > 0 && |
| 126 | info_->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { |
| 127 | __ stop("stop_at"); |
| 128 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 129 | #endif |
| 130 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 131 | // a1: Callee's JS function. |
| 132 | // cp: Callee's context. |
| 133 | // fp: Caller's frame pointer. |
| 134 | // lr: Caller's pc. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 135 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 136 | // Strict mode functions and builtins need to replace the receiver |
| 137 | // with undefined when called as functions (without an explicit |
| 138 | // receiver object). r5 is zero for method calls and non-zero for |
| 139 | // function calls. |
| 140 | if (!info_->is_classic_mode() || info_->is_native()) { |
| 141 | Label ok; |
| 142 | __ Branch(&ok, eq, t1, Operand(zero_reg)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 143 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 144 | int receiver_offset = scope()->num_parameters() * kPointerSize; |
| 145 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 146 | __ sw(a2, MemOperand(sp, receiver_offset)); |
| 147 | __ bind(&ok); |
| 148 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 149 | } |
| 150 | |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 151 | info()->set_prologue_offset(masm_->pc_offset()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 152 | if (NeedsEagerFrame()) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 153 | if (info()->IsStub()) { |
| 154 | __ Push(ra, fp, cp); |
| 155 | __ Push(Smi::FromInt(StackFrame::STUB)); |
| 156 | // Adjust FP to point to saved FP. |
| 157 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
| 158 | } else { |
| 159 | // The following three instructions must remain together and unmodified |
| 160 | // for code aging to work properly. |
| 161 | __ Push(ra, fp, cp, a1); |
| 162 | // Add unused load of ip to ensure prologue sequence is identical for |
| 163 | // full-codegen and lithium-codegen. |
| 164 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 165 | // Adj. FP to point to saved FP. |
| 166 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
| 167 | } |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 168 | frame_is_built_ = true; |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 169 | info_->AddNoFrameRange(0, masm_->pc_offset()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 170 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 171 | |
| 172 | // Reserve space for the stack slots needed by the code. |
| 173 | int slots = GetStackSlotCount(); |
| 174 | if (slots > 0) { |
| 175 | if (FLAG_debug_code) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 176 | __ Subu(sp, sp, Operand(slots * kPointerSize)); |
| 177 | __ push(a0); |
| 178 | __ push(a1); |
| 179 | __ Addu(a0, sp, Operand(slots * kPointerSize)); |
| 180 | __ li(a1, Operand(kSlotsZapValue)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 181 | Label loop; |
| 182 | __ bind(&loop); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 183 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 184 | __ sw(a1, MemOperand(a0, 2 * kPointerSize)); |
| 185 | __ Branch(&loop, ne, a0, Operand(sp)); |
| 186 | __ pop(a1); |
| 187 | __ pop(a0); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 188 | } else { |
| 189 | __ Subu(sp, sp, Operand(slots * kPointerSize)); |
| 190 | } |
| 191 | } |
| 192 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 193 | if (info()->saves_caller_doubles()) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 194 | Comment(";;; Save clobbered callee double registers"); |
| 195 | int count = 0; |
| 196 | BitVector* doubles = chunk()->allocated_double_registers(); |
| 197 | BitVector::Iterator save_iterator(doubles); |
| 198 | while (!save_iterator.Done()) { |
| 199 | __ sdc1(DoubleRegister::FromAllocationIndex(save_iterator.Current()), |
| 200 | MemOperand(sp, count * kDoubleSize)); |
| 201 | save_iterator.Advance(); |
| 202 | count++; |
| 203 | } |
| 204 | } |
| 205 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 206 | // Possibly allocate a local context. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 207 | int heap_slots = info()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 208 | if (heap_slots > 0) { |
| 209 | Comment(";;; Allocate local context"); |
| 210 | // Argument to NewContext is the function, which is in a1. |
| 211 | __ push(a1); |
| 212 | if (heap_slots <= FastNewContextStub::kMaximumSlots) { |
| 213 | FastNewContextStub stub(heap_slots); |
| 214 | __ CallStub(&stub); |
| 215 | } else { |
| 216 | __ CallRuntime(Runtime::kNewFunctionContext, 1); |
| 217 | } |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 218 | RecordSafepoint(Safepoint::kNoLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 219 | // Context is returned in both v0 and cp. It replaces the context |
| 220 | // passed to us. It's saved in the stack and kept live in cp. |
| 221 | __ sw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 222 | // Copy any necessary parameters into the context. |
| 223 | int num_parameters = scope()->num_parameters(); |
| 224 | for (int i = 0; i < num_parameters; i++) { |
| 225 | Variable* var = scope()->parameter(i); |
| 226 | if (var->IsContextSlot()) { |
| 227 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 228 | (num_parameters - 1 - i) * kPointerSize; |
| 229 | // Load parameter from stack. |
| 230 | __ lw(a0, MemOperand(fp, parameter_offset)); |
| 231 | // Store it in the context. |
| 232 | MemOperand target = ContextOperand(cp, var->index()); |
| 233 | __ sw(a0, target); |
| 234 | // Update the write barrier. This clobbers a3 and a0. |
| 235 | __ RecordWriteContextSlot( |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 236 | cp, target.offset(), a0, a3, GetRAState(), kSaveFPRegs); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 237 | } |
| 238 | } |
| 239 | Comment(";;; End allocate local context"); |
| 240 | } |
| 241 | |
| 242 | // Trace the call. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 243 | if (FLAG_trace && info()->IsOptimizing()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 244 | __ CallRuntime(Runtime::kTraceEnter, 0); |
| 245 | } |
| 246 | return !is_aborted(); |
| 247 | } |
| 248 | |
| 249 | |
| 250 | bool LCodeGen::GenerateBody() { |
| 251 | ASSERT(is_generating()); |
| 252 | bool emit_instructions = true; |
| 253 | for (current_instruction_ = 0; |
| 254 | !is_aborted() && current_instruction_ < instructions_->length(); |
| 255 | current_instruction_++) { |
| 256 | LInstruction* instr = instructions_->at(current_instruction_); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 257 | |
| 258 | // Don't emit code for basic blocks with a replacement. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 259 | if (instr->IsLabel()) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 260 | emit_instructions = !LLabel::cast(instr)->HasReplacement(); |
| 261 | } |
| 262 | if (!emit_instructions) continue; |
| 263 | |
| 264 | if (FLAG_code_comments && instr->HasInterestingComment(this)) { |
| 265 | Comment(";;; <@%d,#%d> %s", |
| 266 | current_instruction_, |
| 267 | instr->hydrogen_value()->id(), |
| 268 | instr->Mnemonic()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 269 | } |
| 270 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 271 | instr->CompileToNative(this); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 272 | } |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 273 | EnsureSpaceForLazyDeopt(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 274 | return !is_aborted(); |
| 275 | } |
| 276 | |
| 277 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 278 | bool LCodeGen::GenerateDeferredCode() { |
| 279 | ASSERT(is_generating()); |
| 280 | if (deferred_.length() > 0) { |
| 281 | for (int i = 0; !is_aborted() && i < deferred_.length(); i++) { |
| 282 | LDeferredCode* code = deferred_[i]; |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 283 | Comment(";;; <@%d,#%d> " |
| 284 | "-------------------- Deferred %s --------------------", |
| 285 | code->instruction_index(), |
| 286 | code->instr()->hydrogen_value()->id(), |
| 287 | code->instr()->Mnemonic()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 288 | __ bind(code->entry()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 289 | if (NeedsDeferredFrame()) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 290 | Comment(";;; Build frame"); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 291 | ASSERT(!frame_is_built_); |
| 292 | ASSERT(info()->IsStub()); |
| 293 | frame_is_built_ = true; |
| 294 | __ MultiPush(cp.bit() | fp.bit() | ra.bit()); |
| 295 | __ li(scratch0(), Operand(Smi::FromInt(StackFrame::STUB))); |
| 296 | __ push(scratch0()); |
| 297 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 298 | Comment(";;; Deferred code"); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 299 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 300 | code->Generate(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 301 | if (NeedsDeferredFrame()) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 302 | Comment(";;; Destroy frame"); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 303 | ASSERT(frame_is_built_); |
| 304 | __ pop(at); |
| 305 | __ MultiPop(cp.bit() | fp.bit() | ra.bit()); |
| 306 | frame_is_built_ = false; |
| 307 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 308 | __ jmp(code->exit()); |
| 309 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 310 | } |
| 311 | // Deferred code is the last part of the instruction sequence. Mark |
| 312 | // the generated code as done unless we bailed out. |
| 313 | if (!is_aborted()) status_ = DONE; |
| 314 | return !is_aborted(); |
| 315 | } |
| 316 | |
| 317 | |
| 318 | bool LCodeGen::GenerateDeoptJumpTable() { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 319 | // Check that the jump table is accessible from everywhere in the function |
| 320 | // code, i.e. that offsets to the table can be encoded in the 16bit signed |
| 321 | // immediate of a branch instruction. |
| 322 | // To simplify we consider the code size from the first instruction to the |
| 323 | // end of the jump table. |
| 324 | if (!is_int16((masm()->pc_offset() / Assembler::kInstrSize) + |
| 325 | deopt_jump_table_.length() * 12)) { |
| 326 | Abort("Generated code is too large"); |
| 327 | } |
| 328 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 329 | if (deopt_jump_table_.length() > 0) { |
| 330 | Comment(";;; -------------------- Jump table --------------------"); |
| 331 | } |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 332 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 333 | Label table_start; |
| 334 | __ bind(&table_start); |
danno@chromium.org | 169691d | 2013-07-15 08:01:13 +0000 | [diff] [blame] | 335 | Label needs_frame; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 336 | for (int i = 0; i < deopt_jump_table_.length(); i++) { |
| 337 | __ bind(&deopt_jump_table_[i].label); |
| 338 | Address entry = deopt_jump_table_[i].address; |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 339 | Deoptimizer::BailoutType type = deopt_jump_table_[i].bailout_type; |
svenpanne@chromium.org | 876cca8 | 2013-03-18 14:43:20 +0000 | [diff] [blame] | 340 | int id = Deoptimizer::GetDeoptimizationId(isolate(), entry, type); |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 341 | if (id == Deoptimizer::kNotDeoptimizationEntry) { |
| 342 | Comment(";;; jump table entry %d.", i); |
| 343 | } else { |
| 344 | Comment(";;; jump table entry %d: deoptimization bailout %d.", i, id); |
| 345 | } |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 346 | __ li(t9, Operand(ExternalReference::ForDeoptEntry(entry))); |
| 347 | if (deopt_jump_table_[i].needs_frame) { |
danno@chromium.org | 169691d | 2013-07-15 08:01:13 +0000 | [diff] [blame] | 348 | if (needs_frame.is_bound()) { |
| 349 | __ Branch(&needs_frame); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 350 | } else { |
danno@chromium.org | 169691d | 2013-07-15 08:01:13 +0000 | [diff] [blame] | 351 | __ bind(&needs_frame); |
| 352 | __ MultiPush(cp.bit() | fp.bit() | ra.bit()); |
| 353 | // This variant of deopt can only be used with stubs. Since we don't |
| 354 | // have a function pointer to install in the stack frame that we're |
| 355 | // building, install a special marker there instead. |
| 356 | ASSERT(info()->IsStub()); |
| 357 | __ li(scratch0(), Operand(Smi::FromInt(StackFrame::STUB))); |
| 358 | __ push(scratch0()); |
| 359 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
| 360 | __ Call(t9); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 361 | } |
| 362 | } else { |
danno@chromium.org | 169691d | 2013-07-15 08:01:13 +0000 | [diff] [blame] | 363 | __ Call(t9); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 364 | } |
| 365 | } |
| 366 | __ RecordComment("]"); |
| 367 | |
| 368 | // The deoptimization jump table is the last part of the instruction |
| 369 | // sequence. Mark the generated code as done unless we bailed out. |
| 370 | if (!is_aborted()) status_ = DONE; |
| 371 | return !is_aborted(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | |
| 375 | bool LCodeGen::GenerateSafepointTable() { |
| 376 | ASSERT(is_done()); |
| 377 | safepoints_.Emit(masm(), GetStackSlotCount()); |
| 378 | return !is_aborted(); |
| 379 | } |
| 380 | |
| 381 | |
| 382 | Register LCodeGen::ToRegister(int index) const { |
| 383 | return Register::FromAllocationIndex(index); |
| 384 | } |
| 385 | |
| 386 | |
| 387 | DoubleRegister LCodeGen::ToDoubleRegister(int index) const { |
| 388 | return DoubleRegister::FromAllocationIndex(index); |
| 389 | } |
| 390 | |
| 391 | |
| 392 | Register LCodeGen::ToRegister(LOperand* op) const { |
| 393 | ASSERT(op->IsRegister()); |
| 394 | return ToRegister(op->index()); |
| 395 | } |
| 396 | |
| 397 | |
| 398 | Register LCodeGen::EmitLoadRegister(LOperand* op, Register scratch) { |
| 399 | if (op->IsRegister()) { |
| 400 | return ToRegister(op->index()); |
| 401 | } else if (op->IsConstantOperand()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 402 | LConstantOperand* const_op = LConstantOperand::cast(op); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 403 | HConstant* constant = chunk_->LookupConstant(const_op); |
| 404 | Handle<Object> literal = constant->handle(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 405 | Representation r = chunk_->LookupLiteralRepresentation(const_op); |
| 406 | if (r.IsInteger32()) { |
| 407 | ASSERT(literal->IsNumber()); |
| 408 | __ li(scratch, Operand(static_cast<int32_t>(literal->Number()))); |
| 409 | } else if (r.IsDouble()) { |
| 410 | Abort("EmitLoadRegister: Unsupported double immediate."); |
| 411 | } else { |
| 412 | ASSERT(r.IsTagged()); |
| 413 | if (literal->IsSmi()) { |
| 414 | __ li(scratch, Operand(literal)); |
| 415 | } else { |
| 416 | __ LoadHeapObject(scratch, Handle<HeapObject>::cast(literal)); |
| 417 | } |
| 418 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 419 | return scratch; |
| 420 | } else if (op->IsStackSlot() || op->IsArgument()) { |
| 421 | __ lw(scratch, ToMemOperand(op)); |
| 422 | return scratch; |
| 423 | } |
| 424 | UNREACHABLE(); |
| 425 | return scratch; |
| 426 | } |
| 427 | |
| 428 | |
| 429 | DoubleRegister LCodeGen::ToDoubleRegister(LOperand* op) const { |
| 430 | ASSERT(op->IsDoubleRegister()); |
| 431 | return ToDoubleRegister(op->index()); |
| 432 | } |
| 433 | |
| 434 | |
| 435 | DoubleRegister LCodeGen::EmitLoadDoubleRegister(LOperand* op, |
| 436 | FloatRegister flt_scratch, |
| 437 | DoubleRegister dbl_scratch) { |
| 438 | if (op->IsDoubleRegister()) { |
| 439 | return ToDoubleRegister(op->index()); |
| 440 | } else if (op->IsConstantOperand()) { |
| 441 | LConstantOperand* const_op = LConstantOperand::cast(op); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 442 | HConstant* constant = chunk_->LookupConstant(const_op); |
| 443 | Handle<Object> literal = constant->handle(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 444 | Representation r = chunk_->LookupLiteralRepresentation(const_op); |
| 445 | if (r.IsInteger32()) { |
| 446 | ASSERT(literal->IsNumber()); |
| 447 | __ li(at, Operand(static_cast<int32_t>(literal->Number()))); |
| 448 | __ mtc1(at, flt_scratch); |
| 449 | __ cvt_d_w(dbl_scratch, flt_scratch); |
| 450 | return dbl_scratch; |
| 451 | } else if (r.IsDouble()) { |
| 452 | Abort("unsupported double immediate"); |
| 453 | } else if (r.IsTagged()) { |
| 454 | Abort("unsupported tagged immediate"); |
| 455 | } |
| 456 | } else if (op->IsStackSlot() || op->IsArgument()) { |
| 457 | MemOperand mem_op = ToMemOperand(op); |
| 458 | __ ldc1(dbl_scratch, mem_op); |
| 459 | return dbl_scratch; |
| 460 | } |
| 461 | UNREACHABLE(); |
| 462 | return dbl_scratch; |
| 463 | } |
| 464 | |
| 465 | |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 466 | Handle<Object> LCodeGen::ToHandle(LConstantOperand* op) const { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 467 | HConstant* constant = chunk_->LookupConstant(op); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 468 | ASSERT(chunk_->LookupLiteralRepresentation(op).IsSmiOrTagged()); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 469 | return constant->handle(); |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 470 | } |
| 471 | |
| 472 | |
| 473 | bool LCodeGen::IsInteger32(LConstantOperand* op) const { |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame] | 474 | return chunk_->LookupLiteralRepresentation(op).IsSmiOrInteger32(); |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 478 | bool LCodeGen::IsSmi(LConstantOperand* op) const { |
| 479 | return chunk_->LookupLiteralRepresentation(op).IsSmi(); |
| 480 | } |
| 481 | |
| 482 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 483 | int LCodeGen::ToInteger32(LConstantOperand* op) const { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 484 | HConstant* constant = chunk_->LookupConstant(op); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 485 | return constant->Integer32Value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 486 | } |
| 487 | |
| 488 | |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 489 | Smi* LCodeGen::ToSmi(LConstantOperand* op) const { |
| 490 | HConstant* constant = chunk_->LookupConstant(op); |
| 491 | return Smi::FromInt(constant->Integer32Value()); |
| 492 | } |
| 493 | |
| 494 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 495 | double LCodeGen::ToDouble(LConstantOperand* op) const { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 496 | HConstant* constant = chunk_->LookupConstant(op); |
| 497 | ASSERT(constant->HasDoubleValue()); |
| 498 | return constant->DoubleValue(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 499 | } |
| 500 | |
| 501 | |
| 502 | Operand LCodeGen::ToOperand(LOperand* op) { |
| 503 | if (op->IsConstantOperand()) { |
| 504 | LConstantOperand* const_op = LConstantOperand::cast(op); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 505 | HConstant* constant = chunk()->LookupConstant(const_op); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 506 | Representation r = chunk_->LookupLiteralRepresentation(const_op); |
| 507 | if (r.IsInteger32()) { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 508 | ASSERT(constant->HasInteger32Value()); |
| 509 | return Operand(constant->Integer32Value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 510 | } else if (r.IsDouble()) { |
| 511 | Abort("ToOperand Unsupported double immediate."); |
| 512 | } |
| 513 | ASSERT(r.IsTagged()); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 514 | return Operand(constant->handle()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 515 | } else if (op->IsRegister()) { |
| 516 | return Operand(ToRegister(op)); |
| 517 | } else if (op->IsDoubleRegister()) { |
| 518 | Abort("ToOperand IsDoubleRegister unimplemented"); |
| 519 | return Operand(0); |
| 520 | } |
| 521 | // Stack slots not implemented, use ToMemOperand instead. |
| 522 | UNREACHABLE(); |
| 523 | return Operand(0); |
| 524 | } |
| 525 | |
| 526 | |
| 527 | MemOperand LCodeGen::ToMemOperand(LOperand* op) const { |
| 528 | ASSERT(!op->IsRegister()); |
| 529 | ASSERT(!op->IsDoubleRegister()); |
| 530 | ASSERT(op->IsStackSlot() || op->IsDoubleStackSlot()); |
jkummerow@chromium.org | ac36071 | 2013-02-11 09:00:07 +0000 | [diff] [blame] | 531 | return MemOperand(fp, StackSlotOffset(op->index())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 532 | } |
| 533 | |
| 534 | |
| 535 | MemOperand LCodeGen::ToHighMemOperand(LOperand* op) const { |
| 536 | ASSERT(op->IsDoubleStackSlot()); |
jkummerow@chromium.org | ac36071 | 2013-02-11 09:00:07 +0000 | [diff] [blame] | 537 | return MemOperand(fp, StackSlotOffset(op->index()) + kPointerSize); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | |
| 541 | void LCodeGen::WriteTranslation(LEnvironment* environment, |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 542 | Translation* translation) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 543 | if (environment == NULL) return; |
| 544 | |
| 545 | // The translation includes one command per value in the environment. |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 546 | int translation_size = environment->translation_size(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 547 | // The output frame height does not include the parameters. |
| 548 | int height = translation_size - environment->parameter_count(); |
| 549 | |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 550 | WriteTranslation(environment->outer(), translation); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 551 | bool has_closure_id = !info()->closure().is_null() && |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 552 | !info()->closure().is_identical_to(environment->closure()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 553 | int closure_id = has_closure_id |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 554 | ? DefineDeoptimizationLiteral(environment->closure()) |
| 555 | : Translation::kSelfLiteralId; |
| 556 | |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 557 | switch (environment->frame_type()) { |
| 558 | case JS_FUNCTION: |
| 559 | translation->BeginJSFrame(environment->ast_id(), closure_id, height); |
| 560 | break; |
| 561 | case JS_CONSTRUCT: |
| 562 | translation->BeginConstructStubFrame(closure_id, translation_size); |
| 563 | break; |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 564 | case JS_GETTER: |
| 565 | ASSERT(translation_size == 1); |
| 566 | ASSERT(height == 0); |
| 567 | translation->BeginGetterStubFrame(closure_id); |
| 568 | break; |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 569 | case JS_SETTER: |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 570 | ASSERT(translation_size == 2); |
| 571 | ASSERT(height == 0); |
| 572 | translation->BeginSetterStubFrame(closure_id); |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 573 | break; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 574 | case STUB: |
| 575 | translation->BeginCompiledStubFrame(); |
| 576 | break; |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 577 | case ARGUMENTS_ADAPTOR: |
| 578 | translation->BeginArgumentsAdaptorFrame(closure_id, translation_size); |
| 579 | break; |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 580 | } |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 581 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 582 | for (int i = 0; i < translation_size; ++i) { |
| 583 | LOperand* value = environment->values()->at(i); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 584 | |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 585 | // TODO(mstarzinger): Introduce marker operands to indicate that this value |
| 586 | // is not present and must be reconstructed from the deoptimizer. Currently |
| 587 | // this is only used for the arguments object. |
| 588 | if (value == NULL) { |
| 589 | int arguments_count = environment->values()->length() - translation_size; |
| 590 | translation->BeginArgumentsObject(arguments_count); |
| 591 | for (int i = 0; i < arguments_count; ++i) { |
| 592 | LOperand* value = environment->values()->at(translation_size + i); |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 593 | AddToTranslation(translation, |
| 594 | value, |
| 595 | environment->HasTaggedValueAt(translation_size + i), |
| 596 | environment->HasUint32ValueAt(translation_size + i)); |
| 597 | } |
| 598 | continue; |
| 599 | } |
| 600 | |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 601 | AddToTranslation(translation, |
| 602 | value, |
| 603 | environment->HasTaggedValueAt(i), |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 604 | environment->HasUint32ValueAt(i)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 605 | } |
| 606 | } |
| 607 | |
| 608 | |
| 609 | void LCodeGen::AddToTranslation(Translation* translation, |
| 610 | LOperand* op, |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 611 | bool is_tagged, |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 612 | bool is_uint32) { |
| 613 | if (op->IsStackSlot()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 614 | if (is_tagged) { |
| 615 | translation->StoreStackSlot(op->index()); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 616 | } else if (is_uint32) { |
| 617 | translation->StoreUint32StackSlot(op->index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 618 | } else { |
| 619 | translation->StoreInt32StackSlot(op->index()); |
| 620 | } |
| 621 | } else if (op->IsDoubleStackSlot()) { |
| 622 | translation->StoreDoubleStackSlot(op->index()); |
| 623 | } else if (op->IsArgument()) { |
| 624 | ASSERT(is_tagged); |
| 625 | int src_index = GetStackSlotCount() + op->index(); |
| 626 | translation->StoreStackSlot(src_index); |
| 627 | } else if (op->IsRegister()) { |
| 628 | Register reg = ToRegister(op); |
| 629 | if (is_tagged) { |
| 630 | translation->StoreRegister(reg); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 631 | } else if (is_uint32) { |
| 632 | translation->StoreUint32Register(reg); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 633 | } else { |
| 634 | translation->StoreInt32Register(reg); |
| 635 | } |
| 636 | } else if (op->IsDoubleRegister()) { |
| 637 | DoubleRegister reg = ToDoubleRegister(op); |
| 638 | translation->StoreDoubleRegister(reg); |
| 639 | } else if (op->IsConstantOperand()) { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 640 | HConstant* constant = chunk()->LookupConstant(LConstantOperand::cast(op)); |
| 641 | int src_index = DefineDeoptimizationLiteral(constant->handle()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 642 | translation->StoreLiteral(src_index); |
| 643 | } else { |
| 644 | UNREACHABLE(); |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | |
| 649 | void LCodeGen::CallCode(Handle<Code> code, |
| 650 | RelocInfo::Mode mode, |
| 651 | LInstruction* instr) { |
| 652 | CallCodeGeneric(code, mode, instr, RECORD_SIMPLE_SAFEPOINT); |
| 653 | } |
| 654 | |
| 655 | |
| 656 | void LCodeGen::CallCodeGeneric(Handle<Code> code, |
| 657 | RelocInfo::Mode mode, |
| 658 | LInstruction* instr, |
| 659 | SafepointMode safepoint_mode) { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 660 | EnsureSpaceForLazyDeopt(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 661 | ASSERT(instr != NULL); |
| 662 | LPointerMap* pointers = instr->pointer_map(); |
| 663 | RecordPosition(pointers->position()); |
| 664 | __ Call(code, mode); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 665 | RecordSafepointWithLazyDeopt(instr, safepoint_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | |
| 669 | void LCodeGen::CallRuntime(const Runtime::Function* function, |
| 670 | int num_arguments, |
| 671 | LInstruction* instr) { |
| 672 | ASSERT(instr != NULL); |
| 673 | LPointerMap* pointers = instr->pointer_map(); |
| 674 | ASSERT(pointers != NULL); |
| 675 | RecordPosition(pointers->position()); |
| 676 | |
| 677 | __ CallRuntime(function, num_arguments); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 678 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | |
| 682 | void LCodeGen::CallRuntimeFromDeferred(Runtime::FunctionId id, |
| 683 | int argc, |
| 684 | LInstruction* instr) { |
| 685 | __ CallRuntimeSaveDoubles(id); |
| 686 | RecordSafepointWithRegisters( |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 687 | instr->pointer_map(), argc, Safepoint::kNoLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 691 | void LCodeGen::RegisterEnvironmentForDeoptimization(LEnvironment* environment, |
| 692 | Safepoint::DeoptMode mode) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 693 | if (!environment->HasBeenRegistered()) { |
| 694 | // Physical stack frame layout: |
| 695 | // -x ............. -4 0 ..................................... y |
| 696 | // [incoming arguments] [spill slots] [pushed outgoing arguments] |
| 697 | |
| 698 | // Layout of the environment: |
| 699 | // 0 ..................................................... size-1 |
| 700 | // [parameters] [locals] [expression stack including arguments] |
| 701 | |
| 702 | // Layout of the translation: |
| 703 | // 0 ........................................................ size - 1 + 4 |
| 704 | // [expression stack including arguments] [locals] [4 words] [parameters] |
| 705 | // |>------------ translation_size ------------<| |
| 706 | |
| 707 | int frame_count = 0; |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 708 | int jsframe_count = 0; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 709 | for (LEnvironment* e = environment; e != NULL; e = e->outer()) { |
| 710 | ++frame_count; |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 711 | if (e->frame_type() == JS_FUNCTION) { |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 712 | ++jsframe_count; |
| 713 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 714 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 715 | Translation translation(&translations_, frame_count, jsframe_count, zone()); |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 716 | WriteTranslation(environment, &translation); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 717 | int deoptimization_index = deoptimizations_.length(); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 718 | int pc_offset = masm()->pc_offset(); |
| 719 | environment->Register(deoptimization_index, |
| 720 | translation.index(), |
| 721 | (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 722 | deoptimizations_.Add(environment, zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 723 | } |
| 724 | } |
| 725 | |
| 726 | |
| 727 | void LCodeGen::DeoptimizeIf(Condition cc, |
| 728 | LEnvironment* environment, |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 729 | Deoptimizer::BailoutType bailout_type, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 730 | Register src1, |
| 731 | const Operand& src2) { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 732 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 733 | ASSERT(environment->HasBeenRegistered()); |
| 734 | int id = environment->deoptimization_index(); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 735 | ASSERT(info()->IsOptimizing() || info()->IsStub()); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 736 | Address entry = |
| 737 | Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 738 | if (entry == NULL) { |
| 739 | Abort("bailout was not prepared"); |
| 740 | return; |
| 741 | } |
| 742 | |
| 743 | ASSERT(FLAG_deopt_every_n_times < 2); // Other values not supported on MIPS. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 744 | if (FLAG_deopt_every_n_times == 1 && |
| 745 | !info()->IsStub() && |
| 746 | info()->opt_count() == id) { |
jkummerow@chromium.org | 1048047 | 2013-07-17 08:22:15 +0000 | [diff] [blame^] | 747 | ASSERT(frame_is_built_); |
| 748 | __ Call(entry, RelocInfo::RUNTIME_ENTRY); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 749 | return; |
| 750 | } |
| 751 | |
jkummerow@chromium.org | fee992b | 2013-06-19 18:17:45 +0000 | [diff] [blame] | 752 | if (FLAG_trap_on_deopt && info()->IsOptimizing()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 753 | Label skip; |
| 754 | if (cc != al) { |
| 755 | __ Branch(&skip, NegateCondition(cc), src1, src2); |
| 756 | } |
| 757 | __ stop("trap_on_deopt"); |
| 758 | __ bind(&skip); |
| 759 | } |
| 760 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 761 | ASSERT(info()->IsStub() || frame_is_built_); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 762 | if (cc == al && frame_is_built_) { |
danno@chromium.org | 169691d | 2013-07-15 08:01:13 +0000 | [diff] [blame] | 763 | __ Call(entry, RelocInfo::RUNTIME_ENTRY, cc, src1, src2); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 764 | } else { |
| 765 | // We often have several deopts to the same entry, reuse the last |
| 766 | // jump entry if this is the case. |
| 767 | if (deopt_jump_table_.is_empty() || |
| 768 | (deopt_jump_table_.last().address != entry) || |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 769 | (deopt_jump_table_.last().bailout_type != bailout_type) || |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 770 | (deopt_jump_table_.last().needs_frame != !frame_is_built_)) { |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 771 | Deoptimizer::JumpTableEntry table_entry(entry, |
| 772 | bailout_type, |
| 773 | !frame_is_built_); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 774 | deopt_jump_table_.Add(table_entry, zone()); |
| 775 | } |
| 776 | __ Branch(&deopt_jump_table_.last().label, cc, src1, src2); |
| 777 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 778 | } |
| 779 | |
| 780 | |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 781 | void LCodeGen::DeoptimizeIf(Condition cc, |
| 782 | LEnvironment* environment, |
| 783 | Register src1, |
| 784 | const Operand& src2) { |
| 785 | Deoptimizer::BailoutType bailout_type = info()->IsStub() |
| 786 | ? Deoptimizer::LAZY |
| 787 | : Deoptimizer::EAGER; |
| 788 | DeoptimizeIf(cc, environment, bailout_type, src1, src2); |
| 789 | } |
| 790 | |
| 791 | |
| 792 | void LCodeGen::SoftDeoptimize(LEnvironment* environment, |
| 793 | Register src1, |
| 794 | const Operand& src2) { |
| 795 | ASSERT(!info()->IsStub()); |
| 796 | DeoptimizeIf(al, environment, Deoptimizer::SOFT, src1, src2); |
| 797 | } |
| 798 | |
| 799 | |
ulan@chromium.org | 6ba1fd0 | 2013-02-14 14:56:11 +0000 | [diff] [blame] | 800 | void LCodeGen::RegisterDependentCodeForEmbeddedMaps(Handle<Code> code) { |
| 801 | ZoneList<Handle<Map> > maps(1, zone()); |
| 802 | int mode_mask = RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT); |
| 803 | for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) { |
| 804 | RelocInfo::Mode mode = it.rinfo()->rmode(); |
| 805 | if (mode == RelocInfo::EMBEDDED_OBJECT && |
| 806 | it.rinfo()->target_object()->IsMap()) { |
| 807 | Handle<Map> map(Map::cast(it.rinfo()->target_object())); |
| 808 | if (map->CanTransition()) { |
| 809 | maps.Add(map, zone()); |
| 810 | } |
| 811 | } |
| 812 | } |
| 813 | #ifdef VERIFY_HEAP |
| 814 | // This disables verification of weak embedded maps after full GC. |
| 815 | // AddDependentCode can cause a GC, which would observe the state where |
| 816 | // this code is not yet in the depended code lists of the embedded maps. |
| 817 | NoWeakEmbeddedMapsVerificationScope disable_verification_of_embedded_maps; |
| 818 | #endif |
| 819 | for (int i = 0; i < maps.length(); i++) { |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 820 | maps.at(i)->AddDependentCode(DependentCode::kWeaklyEmbeddedGroup, code); |
ulan@chromium.org | 6ba1fd0 | 2013-02-14 14:56:11 +0000 | [diff] [blame] | 821 | } |
| 822 | } |
| 823 | |
| 824 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 825 | void LCodeGen::PopulateDeoptimizationData(Handle<Code> code) { |
| 826 | int length = deoptimizations_.length(); |
| 827 | if (length == 0) return; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 828 | Handle<DeoptimizationInputData> data = |
| 829 | factory()->NewDeoptimizationInputData(length, TENURED); |
| 830 | |
svenpanne@chromium.org | 876cca8 | 2013-03-18 14:43:20 +0000 | [diff] [blame] | 831 | Handle<ByteArray> translations = |
| 832 | translations_.CreateByteArray(isolate()->factory()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 833 | data->SetTranslationByteArray(*translations); |
| 834 | data->SetInlinedFunctionCount(Smi::FromInt(inlined_function_count_)); |
| 835 | |
| 836 | Handle<FixedArray> literals = |
| 837 | factory()->NewFixedArray(deoptimization_literals_.length(), TENURED); |
rossberg@chromium.org | 79e7902 | 2013-06-03 15:43:46 +0000 | [diff] [blame] | 838 | { AllowDeferredHandleDereference copy_handles; |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 839 | for (int i = 0; i < deoptimization_literals_.length(); i++) { |
| 840 | literals->set(i, *deoptimization_literals_[i]); |
| 841 | } |
| 842 | data->SetLiteralArray(*literals); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 843 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 844 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 845 | data->SetOsrAstId(Smi::FromInt(info_->osr_ast_id().ToInt())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 846 | data->SetOsrPcOffset(Smi::FromInt(osr_pc_offset_)); |
| 847 | |
| 848 | // Populate the deoptimization entries. |
| 849 | for (int i = 0; i < length; i++) { |
| 850 | LEnvironment* env = deoptimizations_[i]; |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 851 | data->SetAstId(i, env->ast_id()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 852 | data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); |
| 853 | data->SetArgumentsStackHeight(i, |
| 854 | Smi::FromInt(env->arguments_stack_height())); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 855 | data->SetPc(i, Smi::FromInt(env->pc_offset())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 856 | } |
| 857 | code->set_deoptimization_data(*data); |
| 858 | } |
| 859 | |
| 860 | |
| 861 | int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { |
| 862 | int result = deoptimization_literals_.length(); |
| 863 | for (int i = 0; i < deoptimization_literals_.length(); ++i) { |
| 864 | if (deoptimization_literals_[i].is_identical_to(literal)) return i; |
| 865 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 866 | deoptimization_literals_.Add(literal, zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 867 | return result; |
| 868 | } |
| 869 | |
| 870 | |
| 871 | void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { |
| 872 | ASSERT(deoptimization_literals_.length() == 0); |
| 873 | |
| 874 | const ZoneList<Handle<JSFunction> >* inlined_closures = |
| 875 | chunk()->inlined_closures(); |
| 876 | |
| 877 | for (int i = 0, length = inlined_closures->length(); |
| 878 | i < length; |
| 879 | i++) { |
| 880 | DefineDeoptimizationLiteral(inlined_closures->at(i)); |
| 881 | } |
| 882 | |
| 883 | inlined_function_count_ = deoptimization_literals_.length(); |
| 884 | } |
| 885 | |
| 886 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 887 | void LCodeGen::RecordSafepointWithLazyDeopt( |
| 888 | LInstruction* instr, SafepointMode safepoint_mode) { |
| 889 | if (safepoint_mode == RECORD_SIMPLE_SAFEPOINT) { |
| 890 | RecordSafepoint(instr->pointer_map(), Safepoint::kLazyDeopt); |
| 891 | } else { |
| 892 | ASSERT(safepoint_mode == RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 893 | RecordSafepointWithRegisters( |
| 894 | instr->pointer_map(), 0, Safepoint::kLazyDeopt); |
| 895 | } |
| 896 | } |
| 897 | |
| 898 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 899 | void LCodeGen::RecordSafepoint( |
| 900 | LPointerMap* pointers, |
| 901 | Safepoint::Kind kind, |
| 902 | int arguments, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 903 | Safepoint::DeoptMode deopt_mode) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 904 | ASSERT(expected_safepoint_kind_ == kind); |
| 905 | |
| 906 | const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); |
| 907 | Safepoint safepoint = safepoints_.DefineSafepoint(masm(), |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 908 | kind, arguments, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 909 | for (int i = 0; i < operands->length(); i++) { |
| 910 | LOperand* pointer = operands->at(i); |
| 911 | if (pointer->IsStackSlot()) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 912 | safepoint.DefinePointerSlot(pointer->index(), zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 913 | } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 914 | safepoint.DefinePointerRegister(ToRegister(pointer), zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 915 | } |
| 916 | } |
| 917 | if (kind & Safepoint::kWithRegisters) { |
| 918 | // Register cp always contains a pointer to the context. |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 919 | safepoint.DefinePointerRegister(cp, zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 920 | } |
| 921 | } |
| 922 | |
| 923 | |
| 924 | void LCodeGen::RecordSafepoint(LPointerMap* pointers, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 925 | Safepoint::DeoptMode deopt_mode) { |
| 926 | RecordSafepoint(pointers, Safepoint::kSimple, 0, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 927 | } |
| 928 | |
| 929 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 930 | void LCodeGen::RecordSafepoint(Safepoint::DeoptMode deopt_mode) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 931 | LPointerMap empty_pointers(RelocInfo::kNoPosition, zone()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 932 | RecordSafepoint(&empty_pointers, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 933 | } |
| 934 | |
| 935 | |
| 936 | void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, |
| 937 | int arguments, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 938 | Safepoint::DeoptMode deopt_mode) { |
| 939 | RecordSafepoint( |
| 940 | pointers, Safepoint::kWithRegisters, arguments, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | |
| 944 | void LCodeGen::RecordSafepointWithRegistersAndDoubles( |
| 945 | LPointerMap* pointers, |
| 946 | int arguments, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 947 | Safepoint::DeoptMode deopt_mode) { |
| 948 | RecordSafepoint( |
| 949 | pointers, Safepoint::kWithRegistersAndDoubles, arguments, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 950 | } |
| 951 | |
| 952 | |
| 953 | void LCodeGen::RecordPosition(int position) { |
| 954 | if (position == RelocInfo::kNoPosition) return; |
| 955 | masm()->positions_recorder()->RecordPosition(position); |
| 956 | } |
| 957 | |
| 958 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 959 | static const char* LabelType(LLabel* label) { |
| 960 | if (label->is_loop_header()) return " (loop header)"; |
| 961 | if (label->is_osr_entry()) return " (OSR entry)"; |
| 962 | return ""; |
| 963 | } |
| 964 | |
| 965 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 966 | void LCodeGen::DoLabel(LLabel* label) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 967 | Comment(";;; <@%d,#%d> -------------------- B%d%s --------------------", |
| 968 | current_instruction_, |
| 969 | label->hydrogen_value()->id(), |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 970 | label->block_id(), |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 971 | LabelType(label)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 972 | __ bind(label->label()); |
| 973 | current_block_ = label->block_id(); |
| 974 | DoGap(label); |
| 975 | } |
| 976 | |
| 977 | |
| 978 | void LCodeGen::DoParallelMove(LParallelMove* move) { |
| 979 | resolver_.Resolve(move); |
| 980 | } |
| 981 | |
| 982 | |
| 983 | void LCodeGen::DoGap(LGap* gap) { |
| 984 | for (int i = LGap::FIRST_INNER_POSITION; |
| 985 | i <= LGap::LAST_INNER_POSITION; |
| 986 | i++) { |
| 987 | LGap::InnerPosition inner_pos = static_cast<LGap::InnerPosition>(i); |
| 988 | LParallelMove* move = gap->GetParallelMove(inner_pos); |
| 989 | if (move != NULL) DoParallelMove(move); |
| 990 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | |
| 994 | void LCodeGen::DoInstructionGap(LInstructionGap* instr) { |
| 995 | DoGap(instr); |
| 996 | } |
| 997 | |
| 998 | |
| 999 | void LCodeGen::DoParameter(LParameter* instr) { |
| 1000 | // Nothing to do. |
| 1001 | } |
| 1002 | |
| 1003 | |
| 1004 | void LCodeGen::DoCallStub(LCallStub* instr) { |
| 1005 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 1006 | switch (instr->hydrogen()->major_key()) { |
| 1007 | case CodeStub::RegExpConstructResult: { |
| 1008 | RegExpConstructResultStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1009 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1010 | break; |
| 1011 | } |
| 1012 | case CodeStub::RegExpExec: { |
| 1013 | RegExpExecStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1014 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1015 | break; |
| 1016 | } |
| 1017 | case CodeStub::SubString: { |
| 1018 | SubStringStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1019 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1020 | break; |
| 1021 | } |
| 1022 | case CodeStub::NumberToString: { |
| 1023 | NumberToStringStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1024 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1025 | break; |
| 1026 | } |
| 1027 | case CodeStub::StringAdd: { |
| 1028 | StringAddStub stub(NO_STRING_ADD_FLAGS); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1029 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1030 | break; |
| 1031 | } |
| 1032 | case CodeStub::StringCompare: { |
| 1033 | StringCompareStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1034 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1035 | break; |
| 1036 | } |
| 1037 | case CodeStub::TranscendentalCache: { |
| 1038 | __ lw(a0, MemOperand(sp, 0)); |
| 1039 | TranscendentalCacheStub stub(instr->transcendental_type(), |
| 1040 | TranscendentalCacheStub::TAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1041 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1042 | break; |
| 1043 | } |
| 1044 | default: |
| 1045 | UNREACHABLE(); |
| 1046 | } |
| 1047 | } |
| 1048 | |
| 1049 | |
| 1050 | void LCodeGen::DoUnknownOSRValue(LUnknownOSRValue* instr) { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1051 | // Record the address of the first unknown OSR value as the place to enter. |
| 1052 | if (osr_pc_offset_ == -1) osr_pc_offset_ = masm()->pc_offset(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | |
| 1056 | void LCodeGen::DoModI(LModI* instr) { |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1057 | HMod* hmod = instr->hydrogen(); |
| 1058 | HValue* left = hmod->left(); |
| 1059 | HValue* right = hmod->right(); |
| 1060 | if (hmod->HasPowerOf2Divisor()) { |
| 1061 | const Register scratch = scratch0(); |
| 1062 | const Register left_reg = ToRegister(instr->left()); |
| 1063 | ASSERT(!left_reg.is(scratch)); |
| 1064 | const Register result_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1065 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1066 | // Note: The code below even works when right contains kMinInt. |
| 1067 | int32_t divisor = Abs(right->GetInteger32Constant()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1068 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1069 | __ mov(scratch, left_reg); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1070 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1071 | Label left_is_not_negative, done; |
| 1072 | if (left->CanBeNegative()) { |
| 1073 | __ Branch(USE_DELAY_SLOT, &left_is_not_negative, |
| 1074 | ge, left_reg, Operand(zero_reg)); |
| 1075 | __ subu(result_reg, zero_reg, left_reg); |
| 1076 | __ And(result_reg, result_reg, divisor - 1); |
| 1077 | if (hmod->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1078 | DeoptimizeIf(eq, instr->environment(), result_reg, Operand(zero_reg)); |
| 1079 | } |
| 1080 | __ Branch(USE_DELAY_SLOT, &done); |
| 1081 | __ subu(result_reg, zero_reg, result_reg); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1082 | } |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1083 | |
| 1084 | __ bind(&left_is_not_negative); |
| 1085 | __ And(result_reg, scratch, divisor - 1); |
| 1086 | __ bind(&done); |
| 1087 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1088 | } else if (hmod->fixed_right_arg().has_value) { |
| 1089 | const Register scratch = scratch0(); |
| 1090 | const Register left_reg = ToRegister(instr->left()); |
| 1091 | const Register result_reg = ToRegister(instr->result()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1092 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1093 | Register right_reg = EmitLoadRegister(instr->right(), scratch); |
| 1094 | |
| 1095 | int32_t divisor = hmod->fixed_right_arg().value; |
| 1096 | ASSERT(IsPowerOf2(divisor)); |
| 1097 | |
| 1098 | // Check if our assumption of a fixed right operand still holds. |
| 1099 | DeoptimizeIf(ne, instr->environment(), right_reg, Operand(divisor)); |
| 1100 | |
| 1101 | Label left_is_not_negative, done; |
| 1102 | if (left->CanBeNegative()) { |
| 1103 | __ Branch(USE_DELAY_SLOT, &left_is_not_negative, |
| 1104 | ge, left_reg, Operand(zero_reg)); |
| 1105 | __ subu(result_reg, zero_reg, left_reg); |
| 1106 | __ And(result_reg, result_reg, divisor - 1); |
| 1107 | if (hmod->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1108 | DeoptimizeIf(eq, instr->environment(), result_reg, Operand(zero_reg)); |
| 1109 | } |
| 1110 | __ Branch(USE_DELAY_SLOT, &done); |
| 1111 | __ subu(result_reg, zero_reg, result_reg); |
| 1112 | } |
| 1113 | |
| 1114 | __ bind(&left_is_not_negative); |
| 1115 | __ And(result_reg, left_reg, divisor - 1); |
| 1116 | __ bind(&done); |
| 1117 | |
| 1118 | } else { |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1119 | const Register scratch = scratch0(); |
| 1120 | const Register left_reg = ToRegister(instr->left()); |
| 1121 | const Register result_reg = ToRegister(instr->result()); |
| 1122 | |
| 1123 | // div runs in the background while we check for special cases. |
| 1124 | Register right_reg = EmitLoadRegister(instr->right(), scratch); |
| 1125 | __ div(left_reg, right_reg); |
| 1126 | |
| 1127 | Label done; |
| 1128 | // Check for x % 0, we have to deopt in this case because we can't return a |
| 1129 | // NaN. |
| 1130 | if (right->CanBeZero()) { |
| 1131 | DeoptimizeIf(eq, instr->environment(), right_reg, Operand(zero_reg)); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1132 | } |
| 1133 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1134 | // Check for kMinInt % -1, we have to deopt if we care about -0, because we |
| 1135 | // can't return that. |
| 1136 | if (left->RangeCanInclude(kMinInt) && right->RangeCanInclude(-1)) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1137 | Label left_not_min_int; |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1138 | __ Branch(&left_not_min_int, ne, left_reg, Operand(kMinInt)); |
| 1139 | // TODO(svenpanne) Don't deopt when we don't care about -0. |
| 1140 | DeoptimizeIf(eq, instr->environment(), right_reg, Operand(-1)); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1141 | __ bind(&left_not_min_int); |
| 1142 | } |
| 1143 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1144 | // TODO(svenpanne) Only emit the test/deopt if we have to. |
| 1145 | __ Branch(USE_DELAY_SLOT, &done, ge, left_reg, Operand(zero_reg)); |
| 1146 | __ mfhi(result_reg); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1147 | |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1148 | if (hmod->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1149 | DeoptimizeIf(eq, instr->environment(), result_reg, Operand(zero_reg)); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1150 | } |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1151 | __ bind(&done); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1152 | } |
| 1153 | } |
| 1154 | |
| 1155 | |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 1156 | void LCodeGen::EmitSignedIntegerDivisionByConstant( |
| 1157 | Register result, |
| 1158 | Register dividend, |
| 1159 | int32_t divisor, |
| 1160 | Register remainder, |
| 1161 | Register scratch, |
| 1162 | LEnvironment* environment) { |
| 1163 | ASSERT(!AreAliased(dividend, scratch, at, no_reg)); |
| 1164 | ASSERT(LChunkBuilder::HasMagicNumberForDivisor(divisor)); |
| 1165 | |
| 1166 | uint32_t divisor_abs = abs(divisor); |
| 1167 | |
| 1168 | int32_t power_of_2_factor = |
| 1169 | CompilerIntrinsics::CountTrailingZeros(divisor_abs); |
| 1170 | |
| 1171 | switch (divisor_abs) { |
| 1172 | case 0: |
| 1173 | DeoptimizeIf(al, environment); |
| 1174 | return; |
| 1175 | |
| 1176 | case 1: |
| 1177 | if (divisor > 0) { |
| 1178 | __ Move(result, dividend); |
| 1179 | } else { |
| 1180 | __ SubuAndCheckForOverflow(result, zero_reg, dividend, scratch); |
| 1181 | DeoptimizeIf(lt, environment, scratch, Operand(zero_reg)); |
| 1182 | } |
| 1183 | // Compute the remainder. |
| 1184 | __ Move(remainder, zero_reg); |
| 1185 | return; |
| 1186 | |
| 1187 | default: |
| 1188 | if (IsPowerOf2(divisor_abs)) { |
| 1189 | // Branch and condition free code for integer division by a power |
| 1190 | // of two. |
| 1191 | int32_t power = WhichPowerOf2(divisor_abs); |
| 1192 | if (power > 1) { |
| 1193 | __ sra(scratch, dividend, power - 1); |
| 1194 | } |
| 1195 | __ srl(scratch, scratch, 32 - power); |
| 1196 | __ Addu(scratch, dividend, Operand(scratch)); |
| 1197 | __ sra(result, scratch, power); |
| 1198 | // Negate if necessary. |
| 1199 | // We don't need to check for overflow because the case '-1' is |
| 1200 | // handled separately. |
| 1201 | if (divisor < 0) { |
| 1202 | ASSERT(divisor != -1); |
| 1203 | __ Subu(result, zero_reg, Operand(result)); |
| 1204 | } |
| 1205 | // Compute the remainder. |
| 1206 | if (divisor > 0) { |
| 1207 | __ sll(scratch, result, power); |
| 1208 | __ Subu(remainder, dividend, Operand(scratch)); |
| 1209 | } else { |
| 1210 | __ sll(scratch, result, power); |
| 1211 | __ Addu(remainder, dividend, Operand(scratch)); |
| 1212 | } |
| 1213 | return; |
| 1214 | } else if (LChunkBuilder::HasMagicNumberForDivisor(divisor)) { |
| 1215 | // Use magic numbers for a few specific divisors. |
| 1216 | // Details and proofs can be found in: |
| 1217 | // - Hacker's Delight, Henry S. Warren, Jr. |
| 1218 | // - The PowerPC Compiler Writer's Guide |
| 1219 | // and probably many others. |
| 1220 | // |
| 1221 | // We handle |
| 1222 | // <divisor with magic numbers> * <power of 2> |
| 1223 | // but not |
| 1224 | // <divisor with magic numbers> * <other divisor with magic numbers> |
| 1225 | DivMagicNumbers magic_numbers = |
| 1226 | DivMagicNumberFor(divisor_abs >> power_of_2_factor); |
| 1227 | // Branch and condition free code for integer division by a power |
| 1228 | // of two. |
| 1229 | const int32_t M = magic_numbers.M; |
| 1230 | const int32_t s = magic_numbers.s + power_of_2_factor; |
| 1231 | |
| 1232 | __ li(scratch, Operand(M)); |
| 1233 | __ mult(dividend, scratch); |
| 1234 | __ mfhi(scratch); |
| 1235 | if (M < 0) { |
| 1236 | __ Addu(scratch, scratch, Operand(dividend)); |
| 1237 | } |
| 1238 | if (s > 0) { |
| 1239 | __ sra(scratch, scratch, s); |
| 1240 | __ mov(scratch, scratch); |
| 1241 | } |
| 1242 | __ srl(at, dividend, 31); |
| 1243 | __ Addu(result, scratch, Operand(at)); |
| 1244 | if (divisor < 0) __ Subu(result, zero_reg, Operand(result)); |
| 1245 | // Compute the remainder. |
| 1246 | __ li(scratch, Operand(divisor)); |
| 1247 | __ Mul(scratch, result, Operand(scratch)); |
| 1248 | __ Subu(remainder, dividend, Operand(scratch)); |
| 1249 | } else { |
| 1250 | __ li(scratch, Operand(divisor)); |
| 1251 | __ div(dividend, scratch); |
| 1252 | __ mfhi(remainder); |
| 1253 | __ mflo(result); |
| 1254 | } |
| 1255 | } |
| 1256 | } |
| 1257 | |
| 1258 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1259 | void LCodeGen::DoDivI(LDivI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1260 | const Register left = ToRegister(instr->left()); |
| 1261 | const Register right = ToRegister(instr->right()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1262 | const Register result = ToRegister(instr->result()); |
| 1263 | |
| 1264 | // On MIPS div is asynchronous - it will run in the background while we |
| 1265 | // check for special cases. |
| 1266 | __ div(left, right); |
| 1267 | |
| 1268 | // Check for x / 0. |
| 1269 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
| 1270 | DeoptimizeIf(eq, instr->environment(), right, Operand(zero_reg)); |
| 1271 | } |
| 1272 | |
| 1273 | // Check for (0 / -x) that will produce negative zero. |
| 1274 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1275 | Label left_not_zero; |
| 1276 | __ Branch(&left_not_zero, ne, left, Operand(zero_reg)); |
| 1277 | DeoptimizeIf(lt, instr->environment(), right, Operand(zero_reg)); |
| 1278 | __ bind(&left_not_zero); |
| 1279 | } |
| 1280 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1281 | // Check for (kMinInt / -1). |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1282 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1283 | Label left_not_min_int; |
| 1284 | __ Branch(&left_not_min_int, ne, left, Operand(kMinInt)); |
| 1285 | DeoptimizeIf(eq, instr->environment(), right, Operand(-1)); |
| 1286 | __ bind(&left_not_min_int); |
| 1287 | } |
| 1288 | |
danno@chromium.org | 4172848 | 2013-06-12 22:31:22 +0000 | [diff] [blame] | 1289 | if (!instr->hydrogen()->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) { |
| 1290 | __ mfhi(result); |
| 1291 | DeoptimizeIf(ne, instr->environment(), result, Operand(zero_reg)); |
| 1292 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1293 | __ mflo(result); |
| 1294 | } |
| 1295 | |
| 1296 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1297 | void LCodeGen::DoMultiplyAddD(LMultiplyAddD* instr) { |
| 1298 | DoubleRegister addend = ToDoubleRegister(instr->addend()); |
| 1299 | DoubleRegister multiplier = ToDoubleRegister(instr->multiplier()); |
| 1300 | DoubleRegister multiplicand = ToDoubleRegister(instr->multiplicand()); |
| 1301 | |
| 1302 | // This is computed in-place. |
| 1303 | ASSERT(addend.is(ToDoubleRegister(instr->result()))); |
| 1304 | |
| 1305 | __ madd_d(addend, addend, multiplier, multiplicand); |
| 1306 | } |
| 1307 | |
| 1308 | |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 1309 | void LCodeGen::DoMathFloorOfDiv(LMathFloorOfDiv* instr) { |
| 1310 | const Register result = ToRegister(instr->result()); |
| 1311 | const Register left = ToRegister(instr->left()); |
| 1312 | const Register remainder = ToRegister(instr->temp()); |
| 1313 | const Register scratch = scratch0(); |
| 1314 | |
| 1315 | if (instr->right()->IsConstantOperand()) { |
| 1316 | Label done; |
| 1317 | int32_t divisor = ToInteger32(LConstantOperand::cast(instr->right())); |
| 1318 | if (divisor < 0) { |
| 1319 | DeoptimizeIf(eq, instr->environment(), left, Operand(zero_reg)); |
| 1320 | } |
| 1321 | EmitSignedIntegerDivisionByConstant(result, |
| 1322 | left, |
| 1323 | divisor, |
| 1324 | remainder, |
| 1325 | scratch, |
| 1326 | instr->environment()); |
| 1327 | // We performed a truncating division. Correct the result if necessary. |
| 1328 | __ Branch(&done, eq, remainder, Operand(zero_reg), USE_DELAY_SLOT); |
| 1329 | __ Xor(scratch , remainder, Operand(divisor)); |
| 1330 | __ Branch(&done, ge, scratch, Operand(zero_reg)); |
| 1331 | __ Subu(result, result, Operand(1)); |
| 1332 | __ bind(&done); |
| 1333 | } else { |
| 1334 | Label done; |
| 1335 | const Register right = ToRegister(instr->right()); |
| 1336 | |
| 1337 | // On MIPS div is asynchronous - it will run in the background while we |
| 1338 | // check for special cases. |
| 1339 | __ div(left, right); |
| 1340 | |
| 1341 | // Check for x / 0. |
| 1342 | DeoptimizeIf(eq, instr->environment(), right, Operand(zero_reg)); |
| 1343 | |
| 1344 | // Check for (0 / -x) that will produce negative zero. |
| 1345 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1346 | Label left_not_zero; |
| 1347 | __ Branch(&left_not_zero, ne, left, Operand(zero_reg)); |
| 1348 | DeoptimizeIf(lt, instr->environment(), right, Operand(zero_reg)); |
| 1349 | __ bind(&left_not_zero); |
| 1350 | } |
| 1351 | |
| 1352 | // Check for (kMinInt / -1). |
| 1353 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1354 | Label left_not_min_int; |
| 1355 | __ Branch(&left_not_min_int, ne, left, Operand(kMinInt)); |
| 1356 | DeoptimizeIf(eq, instr->environment(), right, Operand(-1)); |
| 1357 | __ bind(&left_not_min_int); |
| 1358 | } |
| 1359 | |
| 1360 | __ mfhi(remainder); |
| 1361 | __ mflo(result); |
| 1362 | |
| 1363 | // We performed a truncating division. Correct the result if necessary. |
| 1364 | __ Branch(&done, eq, remainder, Operand(zero_reg), USE_DELAY_SLOT); |
| 1365 | __ Xor(scratch , remainder, Operand(right)); |
| 1366 | __ Branch(&done, ge, scratch, Operand(zero_reg)); |
| 1367 | __ Subu(result, result, Operand(1)); |
| 1368 | __ bind(&done); |
| 1369 | } |
| 1370 | } |
| 1371 | |
| 1372 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1373 | void LCodeGen::DoMulI(LMulI* instr) { |
| 1374 | Register scratch = scratch0(); |
| 1375 | Register result = ToRegister(instr->result()); |
| 1376 | // Note that result may alias left. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1377 | Register left = ToRegister(instr->left()); |
| 1378 | LOperand* right_op = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1379 | |
| 1380 | bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow); |
| 1381 | bool bailout_on_minus_zero = |
| 1382 | instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero); |
| 1383 | |
| 1384 | if (right_op->IsConstantOperand() && !can_overflow) { |
| 1385 | // Use optimized code for specific constants. |
| 1386 | int32_t constant = ToInteger32(LConstantOperand::cast(right_op)); |
| 1387 | |
| 1388 | if (bailout_on_minus_zero && (constant < 0)) { |
| 1389 | // The case of a null constant will be handled separately. |
| 1390 | // If constant is negative and left is null, the result should be -0. |
| 1391 | DeoptimizeIf(eq, instr->environment(), left, Operand(zero_reg)); |
| 1392 | } |
| 1393 | |
| 1394 | switch (constant) { |
| 1395 | case -1: |
| 1396 | __ Subu(result, zero_reg, left); |
| 1397 | break; |
| 1398 | case 0: |
| 1399 | if (bailout_on_minus_zero) { |
| 1400 | // If left is strictly negative and the constant is null, the |
| 1401 | // result is -0. Deoptimize if required, otherwise return 0. |
| 1402 | DeoptimizeIf(lt, instr->environment(), left, Operand(zero_reg)); |
| 1403 | } |
| 1404 | __ mov(result, zero_reg); |
| 1405 | break; |
| 1406 | case 1: |
| 1407 | // Nothing to do. |
| 1408 | __ Move(result, left); |
| 1409 | break; |
| 1410 | default: |
| 1411 | // Multiplying by powers of two and powers of two plus or minus |
| 1412 | // one can be done faster with shifted operands. |
| 1413 | // For other constants we emit standard code. |
| 1414 | int32_t mask = constant >> 31; |
| 1415 | uint32_t constant_abs = (constant + mask) ^ mask; |
| 1416 | |
| 1417 | if (IsPowerOf2(constant_abs) || |
| 1418 | IsPowerOf2(constant_abs - 1) || |
| 1419 | IsPowerOf2(constant_abs + 1)) { |
| 1420 | if (IsPowerOf2(constant_abs)) { |
| 1421 | int32_t shift = WhichPowerOf2(constant_abs); |
| 1422 | __ sll(result, left, shift); |
| 1423 | } else if (IsPowerOf2(constant_abs - 1)) { |
| 1424 | int32_t shift = WhichPowerOf2(constant_abs - 1); |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 1425 | __ sll(scratch, left, shift); |
| 1426 | __ Addu(result, scratch, left); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1427 | } else if (IsPowerOf2(constant_abs + 1)) { |
| 1428 | int32_t shift = WhichPowerOf2(constant_abs + 1); |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 1429 | __ sll(scratch, left, shift); |
| 1430 | __ Subu(result, scratch, left); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1431 | } |
| 1432 | |
| 1433 | // Correct the sign of the result is the constant is negative. |
| 1434 | if (constant < 0) { |
| 1435 | __ Subu(result, zero_reg, result); |
| 1436 | } |
| 1437 | |
| 1438 | } else { |
| 1439 | // Generate standard code. |
| 1440 | __ li(at, constant); |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 1441 | __ Mul(result, left, at); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1442 | } |
| 1443 | } |
| 1444 | |
| 1445 | } else { |
| 1446 | Register right = EmitLoadRegister(right_op, scratch); |
| 1447 | if (bailout_on_minus_zero) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1448 | __ Or(ToRegister(instr->temp()), left, right); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1449 | } |
| 1450 | |
| 1451 | if (can_overflow) { |
| 1452 | // hi:lo = left * right. |
| 1453 | __ mult(left, right); |
| 1454 | __ mfhi(scratch); |
| 1455 | __ mflo(result); |
| 1456 | __ sra(at, result, 31); |
| 1457 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(at)); |
| 1458 | } else { |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 1459 | __ Mul(result, left, right); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1460 | } |
| 1461 | |
| 1462 | if (bailout_on_minus_zero) { |
| 1463 | // Bail out if the result is supposed to be negative zero. |
| 1464 | Label done; |
| 1465 | __ Branch(&done, ne, result, Operand(zero_reg)); |
| 1466 | DeoptimizeIf(lt, |
| 1467 | instr->environment(), |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1468 | ToRegister(instr->temp()), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1469 | Operand(zero_reg)); |
| 1470 | __ bind(&done); |
| 1471 | } |
| 1472 | } |
| 1473 | } |
| 1474 | |
| 1475 | |
| 1476 | void LCodeGen::DoBitI(LBitI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1477 | LOperand* left_op = instr->left(); |
| 1478 | LOperand* right_op = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1479 | ASSERT(left_op->IsRegister()); |
| 1480 | Register left = ToRegister(left_op); |
| 1481 | Register result = ToRegister(instr->result()); |
| 1482 | Operand right(no_reg); |
| 1483 | |
| 1484 | if (right_op->IsStackSlot() || right_op->IsArgument()) { |
| 1485 | right = Operand(EmitLoadRegister(right_op, at)); |
| 1486 | } else { |
| 1487 | ASSERT(right_op->IsRegister() || right_op->IsConstantOperand()); |
| 1488 | right = ToOperand(right_op); |
| 1489 | } |
| 1490 | |
| 1491 | switch (instr->op()) { |
| 1492 | case Token::BIT_AND: |
| 1493 | __ And(result, left, right); |
| 1494 | break; |
| 1495 | case Token::BIT_OR: |
| 1496 | __ Or(result, left, right); |
| 1497 | break; |
| 1498 | case Token::BIT_XOR: |
| 1499 | __ Xor(result, left, right); |
| 1500 | break; |
| 1501 | default: |
| 1502 | UNREACHABLE(); |
| 1503 | break; |
| 1504 | } |
| 1505 | } |
| 1506 | |
| 1507 | |
| 1508 | void LCodeGen::DoShiftI(LShiftI* instr) { |
| 1509 | // Both 'left' and 'right' are "used at start" (see LCodeGen::DoShift), so |
| 1510 | // result may alias either of them. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1511 | LOperand* right_op = instr->right(); |
| 1512 | Register left = ToRegister(instr->left()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1513 | Register result = ToRegister(instr->result()); |
| 1514 | |
| 1515 | if (right_op->IsRegister()) { |
| 1516 | // No need to mask the right operand on MIPS, it is built into the variable |
| 1517 | // shift instructions. |
| 1518 | switch (instr->op()) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1519 | case Token::ROR: |
| 1520 | __ Ror(result, left, Operand(ToRegister(right_op))); |
| 1521 | break; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1522 | case Token::SAR: |
| 1523 | __ srav(result, left, ToRegister(right_op)); |
| 1524 | break; |
| 1525 | case Token::SHR: |
| 1526 | __ srlv(result, left, ToRegister(right_op)); |
| 1527 | if (instr->can_deopt()) { |
| 1528 | DeoptimizeIf(lt, instr->environment(), result, Operand(zero_reg)); |
| 1529 | } |
| 1530 | break; |
| 1531 | case Token::SHL: |
| 1532 | __ sllv(result, left, ToRegister(right_op)); |
| 1533 | break; |
| 1534 | default: |
| 1535 | UNREACHABLE(); |
| 1536 | break; |
| 1537 | } |
| 1538 | } else { |
| 1539 | // Mask the right_op operand. |
| 1540 | int value = ToInteger32(LConstantOperand::cast(right_op)); |
| 1541 | uint8_t shift_count = static_cast<uint8_t>(value & 0x1F); |
| 1542 | switch (instr->op()) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1543 | case Token::ROR: |
| 1544 | if (shift_count != 0) { |
| 1545 | __ Ror(result, left, Operand(shift_count)); |
| 1546 | } else { |
| 1547 | __ Move(result, left); |
| 1548 | } |
| 1549 | break; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1550 | case Token::SAR: |
| 1551 | if (shift_count != 0) { |
| 1552 | __ sra(result, left, shift_count); |
| 1553 | } else { |
| 1554 | __ Move(result, left); |
| 1555 | } |
| 1556 | break; |
| 1557 | case Token::SHR: |
| 1558 | if (shift_count != 0) { |
| 1559 | __ srl(result, left, shift_count); |
| 1560 | } else { |
| 1561 | if (instr->can_deopt()) { |
| 1562 | __ And(at, left, Operand(0x80000000)); |
| 1563 | DeoptimizeIf(ne, instr->environment(), at, Operand(zero_reg)); |
| 1564 | } |
| 1565 | __ Move(result, left); |
| 1566 | } |
| 1567 | break; |
| 1568 | case Token::SHL: |
| 1569 | if (shift_count != 0) { |
| 1570 | __ sll(result, left, shift_count); |
| 1571 | } else { |
| 1572 | __ Move(result, left); |
| 1573 | } |
| 1574 | break; |
| 1575 | default: |
| 1576 | UNREACHABLE(); |
| 1577 | break; |
| 1578 | } |
| 1579 | } |
| 1580 | } |
| 1581 | |
| 1582 | |
| 1583 | void LCodeGen::DoSubI(LSubI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1584 | LOperand* left = instr->left(); |
| 1585 | LOperand* right = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1586 | LOperand* result = instr->result(); |
| 1587 | bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow); |
| 1588 | |
| 1589 | if (!can_overflow) { |
| 1590 | if (right->IsStackSlot() || right->IsArgument()) { |
| 1591 | Register right_reg = EmitLoadRegister(right, at); |
| 1592 | __ Subu(ToRegister(result), ToRegister(left), Operand(right_reg)); |
| 1593 | } else { |
| 1594 | ASSERT(right->IsRegister() || right->IsConstantOperand()); |
| 1595 | __ Subu(ToRegister(result), ToRegister(left), ToOperand(right)); |
| 1596 | } |
| 1597 | } else { // can_overflow. |
| 1598 | Register overflow = scratch0(); |
| 1599 | Register scratch = scratch1(); |
| 1600 | if (right->IsStackSlot() || |
| 1601 | right->IsArgument() || |
| 1602 | right->IsConstantOperand()) { |
| 1603 | Register right_reg = EmitLoadRegister(right, scratch); |
| 1604 | __ SubuAndCheckForOverflow(ToRegister(result), |
| 1605 | ToRegister(left), |
| 1606 | right_reg, |
| 1607 | overflow); // Reg at also used as scratch. |
| 1608 | } else { |
| 1609 | ASSERT(right->IsRegister()); |
| 1610 | // Due to overflow check macros not supporting constant operands, |
| 1611 | // handling the IsConstantOperand case was moved to prev if clause. |
| 1612 | __ SubuAndCheckForOverflow(ToRegister(result), |
| 1613 | ToRegister(left), |
| 1614 | ToRegister(right), |
| 1615 | overflow); // Reg at also used as scratch. |
| 1616 | } |
| 1617 | DeoptimizeIf(lt, instr->environment(), overflow, Operand(zero_reg)); |
| 1618 | } |
| 1619 | } |
| 1620 | |
| 1621 | |
| 1622 | void LCodeGen::DoConstantI(LConstantI* instr) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 1623 | __ li(ToRegister(instr->result()), Operand(instr->value())); |
| 1624 | } |
| 1625 | |
| 1626 | |
| 1627 | void LCodeGen::DoConstantS(LConstantS* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1628 | __ li(ToRegister(instr->result()), Operand(instr->value())); |
| 1629 | } |
| 1630 | |
| 1631 | |
| 1632 | void LCodeGen::DoConstantD(LConstantD* instr) { |
| 1633 | ASSERT(instr->result()->IsDoubleRegister()); |
| 1634 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 1635 | double v = instr->value(); |
| 1636 | __ Move(result, v); |
| 1637 | } |
| 1638 | |
| 1639 | |
| 1640 | void LCodeGen::DoConstantT(LConstantT* instr) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1641 | Handle<Object> value = instr->value(); |
rossberg@chromium.org | 79e7902 | 2013-06-03 15:43:46 +0000 | [diff] [blame] | 1642 | AllowDeferredHandleDereference smi_check; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1643 | if (value->IsSmi()) { |
| 1644 | __ li(ToRegister(instr->result()), Operand(value)); |
| 1645 | } else { |
| 1646 | __ LoadHeapObject(ToRegister(instr->result()), |
| 1647 | Handle<HeapObject>::cast(value)); |
| 1648 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1649 | } |
| 1650 | |
| 1651 | |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 1652 | void LCodeGen::DoMapEnumLength(LMapEnumLength* instr) { |
| 1653 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1654 | Register map = ToRegister(instr->value()); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 1655 | __ EnumLength(result, map); |
| 1656 | } |
| 1657 | |
| 1658 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1659 | void LCodeGen::DoElementsKind(LElementsKind* instr) { |
| 1660 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1661 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1662 | |
| 1663 | // Load map into |result|. |
| 1664 | __ lw(result, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 1665 | // Load the map's "bit field 2" into |result|. We only need the first byte, |
| 1666 | // but the following bit field extraction takes care of that anyway. |
| 1667 | __ lbu(result, FieldMemOperand(result, Map::kBitField2Offset)); |
| 1668 | // Retrieve elements_kind from bit field 2. |
| 1669 | __ Ext(result, result, Map::kElementsKindShift, Map::kElementsKindBitCount); |
| 1670 | } |
| 1671 | |
| 1672 | |
| 1673 | void LCodeGen::DoValueOf(LValueOf* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1674 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1675 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1676 | Register map = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1677 | Label done; |
| 1678 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1679 | if (!instr->hydrogen()->value()->IsHeapObject()) { |
| 1680 | // If the object is a smi return the object. |
| 1681 | __ Move(result, input); |
| 1682 | __ JumpIfSmi(input, &done); |
| 1683 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1684 | |
| 1685 | // If the object is not a value type, return the object. |
| 1686 | __ GetObjectType(input, map, map); |
| 1687 | __ Branch(&done, ne, map, Operand(JS_VALUE_TYPE)); |
| 1688 | __ lw(result, FieldMemOperand(input, JSValue::kValueOffset)); |
| 1689 | |
| 1690 | __ bind(&done); |
| 1691 | } |
| 1692 | |
| 1693 | |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1694 | void LCodeGen::DoDateField(LDateField* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1695 | Register object = ToRegister(instr->date()); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1696 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1697 | Register scratch = ToRegister(instr->temp()); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1698 | Smi* index = instr->index(); |
| 1699 | Label runtime, done; |
| 1700 | ASSERT(object.is(a0)); |
| 1701 | ASSERT(result.is(v0)); |
| 1702 | ASSERT(!scratch.is(scratch0())); |
| 1703 | ASSERT(!scratch.is(object)); |
| 1704 | |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 1705 | __ And(at, object, Operand(kSmiTagMask)); |
| 1706 | DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg)); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1707 | __ GetObjectType(object, scratch, scratch); |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 1708 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(JS_DATE_TYPE)); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1709 | |
| 1710 | if (index->value() == 0) { |
| 1711 | __ lw(result, FieldMemOperand(object, JSDate::kValueOffset)); |
| 1712 | } else { |
| 1713 | if (index->value() < JSDate::kFirstUncachedField) { |
| 1714 | ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); |
| 1715 | __ li(scratch, Operand(stamp)); |
| 1716 | __ lw(scratch, MemOperand(scratch)); |
| 1717 | __ lw(scratch0(), FieldMemOperand(object, JSDate::kCacheStampOffset)); |
| 1718 | __ Branch(&runtime, ne, scratch, Operand(scratch0())); |
| 1719 | __ lw(result, FieldMemOperand(object, JSDate::kValueOffset + |
| 1720 | kPointerSize * index->value())); |
| 1721 | __ jmp(&done); |
| 1722 | } |
| 1723 | __ bind(&runtime); |
| 1724 | __ PrepareCallCFunction(2, scratch); |
| 1725 | __ li(a1, Operand(index)); |
| 1726 | __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); |
| 1727 | __ bind(&done); |
| 1728 | } |
| 1729 | } |
| 1730 | |
| 1731 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1732 | void LCodeGen::DoSeqStringSetChar(LSeqStringSetChar* instr) { |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 1733 | Register string = ToRegister(instr->string()); |
| 1734 | Register index = ToRegister(instr->index()); |
| 1735 | Register value = ToRegister(instr->value()); |
| 1736 | Register scratch = scratch0(); |
| 1737 | String::Encoding encoding = instr->encoding(); |
| 1738 | |
| 1739 | if (FLAG_debug_code) { |
| 1740 | __ lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 1741 | __ lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); |
| 1742 | |
| 1743 | __ And(at, at, Operand(kStringRepresentationMask | kStringEncodingMask)); |
| 1744 | static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag; |
| 1745 | static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag; |
| 1746 | __ Subu(at, at, Operand(encoding == String::ONE_BYTE_ENCODING |
| 1747 | ? one_byte_seq_type : two_byte_seq_type)); |
| 1748 | __ Check(eq, "Unexpected string type", at, Operand(zero_reg)); |
| 1749 | } |
| 1750 | |
| 1751 | __ Addu(scratch, |
| 1752 | string, |
| 1753 | Operand(SeqString::kHeaderSize - kHeapObjectTag)); |
| 1754 | if (encoding == String::ONE_BYTE_ENCODING) { |
| 1755 | __ Addu(at, scratch, index); |
| 1756 | __ sb(value, MemOperand(at)); |
| 1757 | } else { |
| 1758 | __ sll(at, index, 1); |
| 1759 | __ Addu(at, scratch, at); |
| 1760 | __ sh(value, MemOperand(at)); |
| 1761 | } |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1762 | } |
| 1763 | |
| 1764 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1765 | void LCodeGen::DoBitNotI(LBitNotI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1766 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1767 | Register result = ToRegister(instr->result()); |
| 1768 | __ Nor(result, zero_reg, Operand(input)); |
| 1769 | } |
| 1770 | |
| 1771 | |
| 1772 | void LCodeGen::DoThrow(LThrow* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1773 | Register input_reg = EmitLoadRegister(instr->value(), at); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1774 | __ push(input_reg); |
| 1775 | CallRuntime(Runtime::kThrow, 1, instr); |
| 1776 | |
| 1777 | if (FLAG_debug_code) { |
| 1778 | __ stop("Unreachable code."); |
| 1779 | } |
| 1780 | } |
| 1781 | |
| 1782 | |
| 1783 | void LCodeGen::DoAddI(LAddI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1784 | LOperand* left = instr->left(); |
| 1785 | LOperand* right = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1786 | LOperand* result = instr->result(); |
| 1787 | bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow); |
| 1788 | |
| 1789 | if (!can_overflow) { |
| 1790 | if (right->IsStackSlot() || right->IsArgument()) { |
| 1791 | Register right_reg = EmitLoadRegister(right, at); |
| 1792 | __ Addu(ToRegister(result), ToRegister(left), Operand(right_reg)); |
| 1793 | } else { |
| 1794 | ASSERT(right->IsRegister() || right->IsConstantOperand()); |
| 1795 | __ Addu(ToRegister(result), ToRegister(left), ToOperand(right)); |
| 1796 | } |
| 1797 | } else { // can_overflow. |
| 1798 | Register overflow = scratch0(); |
| 1799 | Register scratch = scratch1(); |
| 1800 | if (right->IsStackSlot() || |
| 1801 | right->IsArgument() || |
| 1802 | right->IsConstantOperand()) { |
| 1803 | Register right_reg = EmitLoadRegister(right, scratch); |
| 1804 | __ AdduAndCheckForOverflow(ToRegister(result), |
| 1805 | ToRegister(left), |
| 1806 | right_reg, |
| 1807 | overflow); // Reg at also used as scratch. |
| 1808 | } else { |
| 1809 | ASSERT(right->IsRegister()); |
| 1810 | // Due to overflow check macros not supporting constant operands, |
| 1811 | // handling the IsConstantOperand case was moved to prev if clause. |
| 1812 | __ AdduAndCheckForOverflow(ToRegister(result), |
| 1813 | ToRegister(left), |
| 1814 | ToRegister(right), |
| 1815 | overflow); // Reg at also used as scratch. |
| 1816 | } |
| 1817 | DeoptimizeIf(lt, instr->environment(), overflow, Operand(zero_reg)); |
| 1818 | } |
| 1819 | } |
| 1820 | |
| 1821 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1822 | void LCodeGen::DoMathMinMax(LMathMinMax* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1823 | LOperand* left = instr->left(); |
| 1824 | LOperand* right = instr->right(); |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1825 | HMathMinMax::Operation operation = instr->hydrogen()->operation(); |
| 1826 | Condition condition = (operation == HMathMinMax::kMathMin) ? le : ge; |
| 1827 | if (instr->hydrogen()->representation().IsInteger32()) { |
| 1828 | Register left_reg = ToRegister(left); |
| 1829 | Operand right_op = (right->IsRegister() || right->IsConstantOperand()) |
| 1830 | ? ToOperand(right) |
| 1831 | : Operand(EmitLoadRegister(right, at)); |
| 1832 | Register result_reg = ToRegister(instr->result()); |
| 1833 | Label return_right, done; |
| 1834 | if (!result_reg.is(left_reg)) { |
| 1835 | __ Branch(&return_right, NegateCondition(condition), left_reg, right_op); |
| 1836 | __ mov(result_reg, left_reg); |
| 1837 | __ Branch(&done); |
| 1838 | } |
| 1839 | __ Branch(&done, condition, left_reg, right_op); |
| 1840 | __ bind(&return_right); |
| 1841 | __ Addu(result_reg, zero_reg, right_op); |
| 1842 | __ bind(&done); |
| 1843 | } else { |
| 1844 | ASSERT(instr->hydrogen()->representation().IsDouble()); |
| 1845 | FPURegister left_reg = ToDoubleRegister(left); |
| 1846 | FPURegister right_reg = ToDoubleRegister(right); |
| 1847 | FPURegister result_reg = ToDoubleRegister(instr->result()); |
| 1848 | Label check_nan_left, check_zero, return_left, return_right, done; |
| 1849 | __ BranchF(&check_zero, &check_nan_left, eq, left_reg, right_reg); |
| 1850 | __ BranchF(&return_left, NULL, condition, left_reg, right_reg); |
| 1851 | __ Branch(&return_right); |
| 1852 | |
| 1853 | __ bind(&check_zero); |
| 1854 | // left == right != 0. |
| 1855 | __ BranchF(&return_left, NULL, ne, left_reg, kDoubleRegZero); |
| 1856 | // At this point, both left and right are either 0 or -0. |
| 1857 | if (operation == HMathMinMax::kMathMin) { |
| 1858 | __ neg_d(left_reg, left_reg); |
| 1859 | __ sub_d(result_reg, left_reg, right_reg); |
| 1860 | __ neg_d(result_reg, result_reg); |
| 1861 | } else { |
| 1862 | __ add_d(result_reg, left_reg, right_reg); |
| 1863 | } |
| 1864 | __ Branch(&done); |
| 1865 | |
| 1866 | __ bind(&check_nan_left); |
| 1867 | // left == NaN. |
| 1868 | __ BranchF(NULL, &return_left, eq, left_reg, left_reg); |
| 1869 | __ bind(&return_right); |
| 1870 | if (!right_reg.is(result_reg)) { |
| 1871 | __ mov_d(result_reg, right_reg); |
| 1872 | } |
| 1873 | __ Branch(&done); |
| 1874 | |
| 1875 | __ bind(&return_left); |
| 1876 | if (!left_reg.is(result_reg)) { |
| 1877 | __ mov_d(result_reg, left_reg); |
| 1878 | } |
| 1879 | __ bind(&done); |
| 1880 | } |
| 1881 | } |
| 1882 | |
| 1883 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1884 | void LCodeGen::DoArithmeticD(LArithmeticD* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1885 | DoubleRegister left = ToDoubleRegister(instr->left()); |
| 1886 | DoubleRegister right = ToDoubleRegister(instr->right()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1887 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 1888 | switch (instr->op()) { |
| 1889 | case Token::ADD: |
| 1890 | __ add_d(result, left, right); |
| 1891 | break; |
| 1892 | case Token::SUB: |
| 1893 | __ sub_d(result, left, right); |
| 1894 | break; |
| 1895 | case Token::MUL: |
| 1896 | __ mul_d(result, left, right); |
| 1897 | break; |
| 1898 | case Token::DIV: |
| 1899 | __ div_d(result, left, right); |
| 1900 | break; |
| 1901 | case Token::MOD: { |
| 1902 | // Save a0-a3 on the stack. |
| 1903 | RegList saved_regs = a0.bit() | a1.bit() | a2.bit() | a3.bit(); |
| 1904 | __ MultiPush(saved_regs); |
| 1905 | |
| 1906 | __ PrepareCallCFunction(0, 2, scratch0()); |
| 1907 | __ SetCallCDoubleArguments(left, right); |
| 1908 | __ CallCFunction( |
| 1909 | ExternalReference::double_fp_operation(Token::MOD, isolate()), |
| 1910 | 0, 2); |
| 1911 | // Move the result in the double result register. |
| 1912 | __ GetCFunctionDoubleResult(result); |
| 1913 | |
| 1914 | // Restore saved register. |
| 1915 | __ MultiPop(saved_regs); |
| 1916 | break; |
| 1917 | } |
| 1918 | default: |
| 1919 | UNREACHABLE(); |
| 1920 | break; |
| 1921 | } |
| 1922 | } |
| 1923 | |
| 1924 | |
| 1925 | void LCodeGen::DoArithmeticT(LArithmeticT* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1926 | ASSERT(ToRegister(instr->left()).is(a1)); |
| 1927 | ASSERT(ToRegister(instr->right()).is(a0)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1928 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 1929 | |
| 1930 | BinaryOpStub stub(instr->op(), NO_OVERWRITE); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1931 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1932 | // Other arch use a nop here, to signal that there is no inlined |
| 1933 | // patchable code. Mips does not need the nop, since our marker |
| 1934 | // instruction (andi zero_reg) will never be used in normal code. |
| 1935 | } |
| 1936 | |
| 1937 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1938 | int LCodeGen::GetNextEmittedBlock() const { |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1939 | for (int i = current_block_ + 1; i < graph()->blocks()->length(); ++i) { |
| 1940 | if (!chunk_->GetLabel(i)->HasReplacement()) return i; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1941 | } |
| 1942 | return -1; |
| 1943 | } |
| 1944 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1945 | template<class InstrType> |
| 1946 | void LCodeGen::EmitBranch(InstrType instr, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1947 | Condition cc, Register src1, const Operand& src2) { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1948 | int left_block = instr->TrueDestination(chunk_); |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 1949 | int right_block = instr->FalseDestination(chunk_); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1950 | |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1951 | int next_block = GetNextEmittedBlock(); |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 1952 | if (right_block == left_block || cc == al) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1953 | EmitGoto(left_block); |
| 1954 | } else if (left_block == next_block) { |
| 1955 | __ Branch(chunk_->GetAssemblyLabel(right_block), |
| 1956 | NegateCondition(cc), src1, src2); |
| 1957 | } else if (right_block == next_block) { |
| 1958 | __ Branch(chunk_->GetAssemblyLabel(left_block), cc, src1, src2); |
| 1959 | } else { |
| 1960 | __ Branch(chunk_->GetAssemblyLabel(left_block), cc, src1, src2); |
| 1961 | __ Branch(chunk_->GetAssemblyLabel(right_block)); |
| 1962 | } |
| 1963 | } |
| 1964 | |
| 1965 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1966 | template<class InstrType> |
| 1967 | void LCodeGen::EmitBranchF(InstrType instr, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1968 | Condition cc, FPURegister src1, FPURegister src2) { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1969 | int right_block = instr->FalseDestination(chunk_); |
| 1970 | int left_block = instr->TrueDestination(chunk_); |
| 1971 | |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1972 | int next_block = GetNextEmittedBlock(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1973 | if (right_block == left_block) { |
| 1974 | EmitGoto(left_block); |
| 1975 | } else if (left_block == next_block) { |
| 1976 | __ BranchF(chunk_->GetAssemblyLabel(right_block), NULL, |
| 1977 | NegateCondition(cc), src1, src2); |
| 1978 | } else if (right_block == next_block) { |
| 1979 | __ BranchF(chunk_->GetAssemblyLabel(left_block), NULL, cc, src1, src2); |
| 1980 | } else { |
| 1981 | __ BranchF(chunk_->GetAssemblyLabel(left_block), NULL, cc, src1, src2); |
| 1982 | __ Branch(chunk_->GetAssemblyLabel(right_block)); |
| 1983 | } |
| 1984 | } |
| 1985 | |
| 1986 | |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 1987 | void LCodeGen::DoDebugBreak(LDebugBreak* instr) { |
| 1988 | __ stop("LDebugBreak"); |
| 1989 | } |
| 1990 | |
| 1991 | |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 1992 | void LCodeGen::DoIsNumberAndBranch(LIsNumberAndBranch* instr) { |
| 1993 | Representation r = instr->hydrogen()->value()->representation(); |
| 1994 | if (r.IsSmiOrInteger32() || r.IsDouble()) { |
| 1995 | EmitBranch(instr, al, zero_reg, Operand(zero_reg)); |
| 1996 | } else { |
| 1997 | ASSERT(r.IsTagged()); |
| 1998 | Register reg = ToRegister(instr->value()); |
| 1999 | HType type = instr->hydrogen()->value()->type(); |
| 2000 | if (type.IsTaggedNumber()) { |
| 2001 | EmitBranch(instr, al, zero_reg, Operand(zero_reg)); |
| 2002 | } |
| 2003 | __ JumpIfSmi(reg, instr->TrueLabel(chunk_)); |
| 2004 | __ lw(scratch0(), FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 2005 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 2006 | EmitBranch(instr, eq, scratch0(), Operand(at)); |
| 2007 | } |
| 2008 | } |
| 2009 | |
| 2010 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2011 | void LCodeGen::DoBranch(LBranch* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2012 | Representation r = instr->hydrogen()->value()->representation(); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 2013 | if (r.IsInteger32() || r.IsSmi()) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 2014 | ASSERT(!info()->IsStub()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2015 | Register reg = ToRegister(instr->value()); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2016 | EmitBranch(instr, ne, reg, Operand(zero_reg)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2017 | } else if (r.IsDouble()) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 2018 | ASSERT(!info()->IsStub()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2019 | DoubleRegister reg = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2020 | // Test the double value. Zero and NaN are false. |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2021 | EmitBranchF(instr, nue, reg, kDoubleRegZero); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2022 | } else { |
| 2023 | ASSERT(r.IsTagged()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2024 | Register reg = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2025 | HType type = instr->hydrogen()->value()->type(); |
| 2026 | if (type.IsBoolean()) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 2027 | ASSERT(!info()->IsStub()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2028 | __ LoadRoot(at, Heap::kTrueValueRootIndex); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2029 | EmitBranch(instr, eq, reg, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2030 | } else if (type.IsSmi()) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 2031 | ASSERT(!info()->IsStub()); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2032 | EmitBranch(instr, ne, reg, Operand(zero_reg)); |
| 2033 | } else if (type.IsJSArray()) { |
| 2034 | ASSERT(!info()->IsStub()); |
| 2035 | EmitBranch(instr, al, zero_reg, Operand(zero_reg)); |
| 2036 | } else if (type.IsHeapNumber()) { |
| 2037 | ASSERT(!info()->IsStub()); |
| 2038 | DoubleRegister dbl_scratch = double_scratch0(); |
| 2039 | __ ldc1(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset)); |
| 2040 | // Test the double value. Zero and NaN are false. |
| 2041 | EmitBranchF(instr, nue, dbl_scratch, kDoubleRegZero); |
| 2042 | } else if (type.IsString()) { |
| 2043 | ASSERT(!info()->IsStub()); |
| 2044 | __ lw(at, FieldMemOperand(reg, String::kLengthOffset)); |
| 2045 | EmitBranch(instr, ne, at, Operand(zero_reg)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2046 | } else { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2047 | ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types(); |
| 2048 | // Avoid deopts in the case where we've never executed this path before. |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2049 | if (expected.IsEmpty()) expected = ToBooleanStub::Types::Generic(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2050 | |
| 2051 | if (expected.Contains(ToBooleanStub::UNDEFINED)) { |
| 2052 | // undefined -> false. |
| 2053 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2054 | __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2055 | } |
| 2056 | if (expected.Contains(ToBooleanStub::BOOLEAN)) { |
| 2057 | // Boolean -> its value. |
| 2058 | __ LoadRoot(at, Heap::kTrueValueRootIndex); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2059 | __ Branch(instr->TrueLabel(chunk_), eq, reg, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2060 | __ LoadRoot(at, Heap::kFalseValueRootIndex); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2061 | __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2062 | } |
| 2063 | if (expected.Contains(ToBooleanStub::NULL_TYPE)) { |
| 2064 | // 'null' -> false. |
| 2065 | __ LoadRoot(at, Heap::kNullValueRootIndex); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2066 | __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2067 | } |
| 2068 | |
| 2069 | if (expected.Contains(ToBooleanStub::SMI)) { |
| 2070 | // Smis: 0 -> false, all other -> true. |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2071 | __ Branch(instr->FalseLabel(chunk_), eq, reg, Operand(zero_reg)); |
| 2072 | __ JumpIfSmi(reg, instr->TrueLabel(chunk_)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2073 | } else if (expected.NeedsMap()) { |
| 2074 | // If we need a map later and have a Smi -> deopt. |
| 2075 | __ And(at, reg, Operand(kSmiTagMask)); |
| 2076 | DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg)); |
| 2077 | } |
| 2078 | |
| 2079 | const Register map = scratch0(); |
| 2080 | if (expected.NeedsMap()) { |
| 2081 | __ lw(map, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 2082 | if (expected.CanBeUndetectable()) { |
| 2083 | // Undetectable -> false. |
| 2084 | __ lbu(at, FieldMemOperand(map, Map::kBitFieldOffset)); |
| 2085 | __ And(at, at, Operand(1 << Map::kIsUndetectable)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2086 | __ Branch(instr->FalseLabel(chunk_), ne, at, Operand(zero_reg)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2087 | } |
| 2088 | } |
| 2089 | |
| 2090 | if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) { |
| 2091 | // spec object -> true. |
| 2092 | __ lbu(at, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2093 | __ Branch(instr->TrueLabel(chunk_), |
| 2094 | ge, at, Operand(FIRST_SPEC_OBJECT_TYPE)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2095 | } |
| 2096 | |
| 2097 | if (expected.Contains(ToBooleanStub::STRING)) { |
| 2098 | // String value -> false iff empty. |
| 2099 | Label not_string; |
| 2100 | __ lbu(at, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 2101 | __ Branch(¬_string, ge , at, Operand(FIRST_NONSTRING_TYPE)); |
| 2102 | __ lw(at, FieldMemOperand(reg, String::kLengthOffset)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2103 | __ Branch(instr->TrueLabel(chunk_), ne, at, Operand(zero_reg)); |
| 2104 | __ Branch(instr->FalseLabel(chunk_)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2105 | __ bind(¬_string); |
| 2106 | } |
| 2107 | |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 2108 | if (expected.Contains(ToBooleanStub::SYMBOL)) { |
| 2109 | // Symbol value -> true. |
| 2110 | const Register scratch = scratch1(); |
| 2111 | __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2112 | __ Branch(instr->TrueLabel(chunk_), eq, scratch, Operand(SYMBOL_TYPE)); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 2113 | } |
| 2114 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2115 | if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { |
| 2116 | // heap number -> false iff +0, -0, or NaN. |
| 2117 | DoubleRegister dbl_scratch = double_scratch0(); |
| 2118 | Label not_heap_number; |
| 2119 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 2120 | __ Branch(¬_heap_number, ne, map, Operand(at)); |
| 2121 | __ ldc1(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2122 | __ BranchF(instr->TrueLabel(chunk_), instr->FalseLabel(chunk_), |
| 2123 | ne, dbl_scratch, kDoubleRegZero); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2124 | // Falls through if dbl_scratch == 0. |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2125 | __ Branch(instr->FalseLabel(chunk_)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2126 | __ bind(¬_heap_number); |
| 2127 | } |
| 2128 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2129 | if (!expected.IsGeneric()) { |
| 2130 | // We've seen something for the first time -> deopt. |
| 2131 | // This can only happen if we are not generic already. |
| 2132 | DeoptimizeIf(al, instr->environment(), zero_reg, Operand(zero_reg)); |
| 2133 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2134 | } |
| 2135 | } |
| 2136 | } |
| 2137 | |
| 2138 | |
| 2139 | void LCodeGen::EmitGoto(int block) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2140 | if (!IsNextEmittedBlock(block)) { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2141 | __ jmp(chunk_->GetAssemblyLabel(LookupDestination(block))); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2142 | } |
| 2143 | } |
| 2144 | |
| 2145 | |
| 2146 | void LCodeGen::DoGoto(LGoto* instr) { |
| 2147 | EmitGoto(instr->block_id()); |
| 2148 | } |
| 2149 | |
| 2150 | |
| 2151 | Condition LCodeGen::TokenToCondition(Token::Value op, bool is_unsigned) { |
| 2152 | Condition cond = kNoCondition; |
| 2153 | switch (op) { |
| 2154 | case Token::EQ: |
| 2155 | case Token::EQ_STRICT: |
| 2156 | cond = eq; |
| 2157 | break; |
| 2158 | case Token::LT: |
| 2159 | cond = is_unsigned ? lo : lt; |
| 2160 | break; |
| 2161 | case Token::GT: |
| 2162 | cond = is_unsigned ? hi : gt; |
| 2163 | break; |
| 2164 | case Token::LTE: |
| 2165 | cond = is_unsigned ? ls : le; |
| 2166 | break; |
| 2167 | case Token::GTE: |
| 2168 | cond = is_unsigned ? hs : ge; |
| 2169 | break; |
| 2170 | case Token::IN: |
| 2171 | case Token::INSTANCEOF: |
| 2172 | default: |
| 2173 | UNREACHABLE(); |
| 2174 | } |
| 2175 | return cond; |
| 2176 | } |
| 2177 | |
| 2178 | |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 2179 | void LCodeGen::DoCompareNumericAndBranch(LCompareNumericAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2180 | LOperand* left = instr->left(); |
| 2181 | LOperand* right = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2182 | Condition cond = TokenToCondition(instr->op(), false); |
| 2183 | |
| 2184 | if (left->IsConstantOperand() && right->IsConstantOperand()) { |
| 2185 | // We can statically evaluate the comparison. |
| 2186 | double left_val = ToDouble(LConstantOperand::cast(left)); |
| 2187 | double right_val = ToDouble(LConstantOperand::cast(right)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2188 | int next_block = EvalComparison(instr->op(), left_val, right_val) ? |
| 2189 | instr->TrueDestination(chunk_) : instr->FalseDestination(chunk_); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2190 | EmitGoto(next_block); |
| 2191 | } else { |
| 2192 | if (instr->is_double()) { |
| 2193 | // Compare left and right as doubles and load the |
| 2194 | // resulting flags into the normal status register. |
| 2195 | FPURegister left_reg = ToDoubleRegister(left); |
| 2196 | FPURegister right_reg = ToDoubleRegister(right); |
| 2197 | |
| 2198 | // If a NaN is involved, i.e. the result is unordered, |
| 2199 | // jump to false block label. |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2200 | __ BranchF(NULL, instr->FalseLabel(chunk_), eq, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2201 | left_reg, right_reg); |
| 2202 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2203 | EmitBranchF(instr, cond, left_reg, right_reg); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2204 | } else { |
| 2205 | Register cmp_left; |
| 2206 | Operand cmp_right = Operand(0); |
| 2207 | |
| 2208 | if (right->IsConstantOperand()) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 2209 | int32_t value = ToInteger32(LConstantOperand::cast(right)); |
| 2210 | if (instr->hydrogen_value()->representation().IsSmi()) { |
| 2211 | cmp_left = ToRegister(left); |
| 2212 | cmp_right = Operand(Smi::FromInt(value)); |
| 2213 | } else { |
| 2214 | cmp_left = ToRegister(left); |
| 2215 | cmp_right = Operand(value); |
| 2216 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2217 | } else if (left->IsConstantOperand()) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 2218 | int32_t value = ToInteger32(LConstantOperand::cast(left)); |
| 2219 | if (instr->hydrogen_value()->representation().IsSmi()) { |
| 2220 | cmp_left = ToRegister(right); |
| 2221 | cmp_right = Operand(Smi::FromInt(value)); |
| 2222 | } else { |
| 2223 | cmp_left = ToRegister(right); |
| 2224 | cmp_right = Operand(value); |
| 2225 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2226 | // We transposed the operands. Reverse the condition. |
| 2227 | cond = ReverseCondition(cond); |
| 2228 | } else { |
| 2229 | cmp_left = ToRegister(left); |
| 2230 | cmp_right = Operand(ToRegister(right)); |
| 2231 | } |
| 2232 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2233 | EmitBranch(instr, cond, cmp_left, cmp_right); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2234 | } |
| 2235 | } |
| 2236 | } |
| 2237 | |
| 2238 | |
| 2239 | void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2240 | Register left = ToRegister(instr->left()); |
| 2241 | Register right = ToRegister(instr->right()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2242 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2243 | EmitBranch(instr, eq, left, Operand(right)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2244 | } |
| 2245 | |
| 2246 | |
| 2247 | void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2248 | Register left = ToRegister(instr->left()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2249 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2250 | EmitBranch(instr, eq, left, Operand(instr->hydrogen()->right())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2251 | } |
| 2252 | |
| 2253 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2254 | Condition LCodeGen::EmitIsObject(Register input, |
| 2255 | Register temp1, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2256 | Register temp2, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2257 | Label* is_not_object, |
| 2258 | Label* is_object) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2259 | __ JumpIfSmi(input, is_not_object); |
| 2260 | |
| 2261 | __ LoadRoot(temp2, Heap::kNullValueRootIndex); |
| 2262 | __ Branch(is_object, eq, input, Operand(temp2)); |
| 2263 | |
| 2264 | // Load map. |
| 2265 | __ lw(temp1, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 2266 | // Undetectable objects behave like undefined. |
| 2267 | __ lbu(temp2, FieldMemOperand(temp1, Map::kBitFieldOffset)); |
| 2268 | __ And(temp2, temp2, Operand(1 << Map::kIsUndetectable)); |
| 2269 | __ Branch(is_not_object, ne, temp2, Operand(zero_reg)); |
| 2270 | |
| 2271 | // Load instance type and check that it is in object type range. |
| 2272 | __ lbu(temp2, FieldMemOperand(temp1, Map::kInstanceTypeOffset)); |
| 2273 | __ Branch(is_not_object, |
| 2274 | lt, temp2, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2275 | |
| 2276 | return le; |
| 2277 | } |
| 2278 | |
| 2279 | |
| 2280 | void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2281 | Register reg = ToRegister(instr->value()); |
| 2282 | Register temp1 = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2283 | Register temp2 = scratch0(); |
| 2284 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2285 | Condition true_cond = |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2286 | EmitIsObject(reg, temp1, temp2, |
| 2287 | instr->FalseLabel(chunk_), instr->TrueLabel(chunk_)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2288 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2289 | EmitBranch(instr, true_cond, temp2, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2290 | Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2291 | } |
| 2292 | |
| 2293 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2294 | Condition LCodeGen::EmitIsString(Register input, |
| 2295 | Register temp1, |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2296 | Label* is_not_string, |
| 2297 | SmiCheck check_needed = INLINE_SMI_CHECK) { |
| 2298 | if (check_needed == INLINE_SMI_CHECK) { |
| 2299 | __ JumpIfSmi(input, is_not_string); |
| 2300 | } |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2301 | __ GetObjectType(input, temp1, temp1); |
| 2302 | |
| 2303 | return lt; |
| 2304 | } |
| 2305 | |
| 2306 | |
| 2307 | void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2308 | Register reg = ToRegister(instr->value()); |
| 2309 | Register temp1 = ToRegister(instr->temp()); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2310 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2311 | SmiCheck check_needed = |
| 2312 | instr->hydrogen()->value()->IsHeapObject() |
| 2313 | ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2314 | Condition true_cond = |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2315 | EmitIsString(reg, temp1, instr->FalseLabel(chunk_), check_needed); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2316 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2317 | EmitBranch(instr, true_cond, temp1, |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2318 | Operand(FIRST_NONSTRING_TYPE)); |
| 2319 | } |
| 2320 | |
| 2321 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2322 | void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2323 | Register input_reg = EmitLoadRegister(instr->value(), at); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2324 | __ And(at, input_reg, kSmiTagMask); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2325 | EmitBranch(instr, eq, at, Operand(zero_reg)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2326 | } |
| 2327 | |
| 2328 | |
| 2329 | void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2330 | Register input = ToRegister(instr->value()); |
| 2331 | Register temp = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2332 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2333 | if (!instr->hydrogen()->value()->IsHeapObject()) { |
| 2334 | __ JumpIfSmi(input, instr->FalseLabel(chunk_)); |
| 2335 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2336 | __ lw(temp, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 2337 | __ lbu(temp, FieldMemOperand(temp, Map::kBitFieldOffset)); |
| 2338 | __ And(at, temp, Operand(1 << Map::kIsUndetectable)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2339 | EmitBranch(instr, ne, at, Operand(zero_reg)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2340 | } |
| 2341 | |
| 2342 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2343 | static Condition ComputeCompareCondition(Token::Value op) { |
| 2344 | switch (op) { |
| 2345 | case Token::EQ_STRICT: |
| 2346 | case Token::EQ: |
| 2347 | return eq; |
| 2348 | case Token::LT: |
| 2349 | return lt; |
| 2350 | case Token::GT: |
| 2351 | return gt; |
| 2352 | case Token::LTE: |
| 2353 | return le; |
| 2354 | case Token::GTE: |
| 2355 | return ge; |
| 2356 | default: |
| 2357 | UNREACHABLE(); |
| 2358 | return kNoCondition; |
| 2359 | } |
| 2360 | } |
| 2361 | |
| 2362 | |
| 2363 | void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) { |
| 2364 | Token::Value op = instr->op(); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2365 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2366 | Handle<Code> ic = CompareIC::GetUninitialized(isolate(), op); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2367 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2368 | |
| 2369 | Condition condition = ComputeCompareCondition(op); |
| 2370 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2371 | EmitBranch(instr, condition, v0, Operand(zero_reg)); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2372 | } |
| 2373 | |
| 2374 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2375 | static InstanceType TestType(HHasInstanceTypeAndBranch* instr) { |
| 2376 | InstanceType from = instr->from(); |
| 2377 | InstanceType to = instr->to(); |
| 2378 | if (from == FIRST_TYPE) return to; |
| 2379 | ASSERT(from == to || to == LAST_TYPE); |
| 2380 | return from; |
| 2381 | } |
| 2382 | |
| 2383 | |
| 2384 | static Condition BranchCondition(HHasInstanceTypeAndBranch* instr) { |
| 2385 | InstanceType from = instr->from(); |
| 2386 | InstanceType to = instr->to(); |
| 2387 | if (from == to) return eq; |
| 2388 | if (to == LAST_TYPE) return hs; |
| 2389 | if (from == FIRST_TYPE) return ls; |
| 2390 | UNREACHABLE(); |
| 2391 | return eq; |
| 2392 | } |
| 2393 | |
| 2394 | |
| 2395 | void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) { |
| 2396 | Register scratch = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2397 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2398 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2399 | if (!instr->hydrogen()->value()->IsHeapObject()) { |
| 2400 | __ JumpIfSmi(input, instr->FalseLabel(chunk_)); |
| 2401 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2402 | |
| 2403 | __ GetObjectType(input, scratch, scratch); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2404 | EmitBranch(instr, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2405 | BranchCondition(instr->hydrogen()), |
| 2406 | scratch, |
| 2407 | Operand(TestType(instr->hydrogen()))); |
| 2408 | } |
| 2409 | |
| 2410 | |
| 2411 | void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2412 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2413 | Register result = ToRegister(instr->result()); |
| 2414 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2415 | __ AssertString(input); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2416 | |
| 2417 | __ lw(result, FieldMemOperand(input, String::kHashFieldOffset)); |
| 2418 | __ IndexFromHash(result, result); |
| 2419 | } |
| 2420 | |
| 2421 | |
| 2422 | void LCodeGen::DoHasCachedArrayIndexAndBranch( |
| 2423 | LHasCachedArrayIndexAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2424 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2425 | Register scratch = scratch0(); |
| 2426 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2427 | __ lw(scratch, |
| 2428 | FieldMemOperand(input, String::kHashFieldOffset)); |
| 2429 | __ And(at, scratch, Operand(String::kContainsCachedArrayIndexMask)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2430 | EmitBranch(instr, eq, at, Operand(zero_reg)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2431 | } |
| 2432 | |
| 2433 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2434 | // Branches to a label or falls through with the answer in flags. Trashes |
| 2435 | // the temp registers, but not the input. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2436 | void LCodeGen::EmitClassOfTest(Label* is_true, |
| 2437 | Label* is_false, |
| 2438 | Handle<String>class_name, |
| 2439 | Register input, |
| 2440 | Register temp, |
| 2441 | Register temp2) { |
| 2442 | ASSERT(!input.is(temp)); |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2443 | ASSERT(!input.is(temp2)); |
| 2444 | ASSERT(!temp.is(temp2)); |
| 2445 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2446 | __ JumpIfSmi(input, is_false); |
| 2447 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2448 | if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Function"))) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2449 | // Assuming the following assertions, we can use the same compares to test |
| 2450 | // for both being a function type and being in the object type range. |
| 2451 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 2452 | STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2453 | FIRST_SPEC_OBJECT_TYPE + 1); |
| 2454 | STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2455 | LAST_SPEC_OBJECT_TYPE - 1); |
| 2456 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 2457 | |
| 2458 | __ GetObjectType(input, temp, temp2); |
| 2459 | __ Branch(is_false, lt, temp2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 2460 | __ Branch(is_true, eq, temp2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 2461 | __ Branch(is_true, eq, temp2, Operand(LAST_SPEC_OBJECT_TYPE)); |
| 2462 | } else { |
| 2463 | // Faster code path to avoid two compares: subtract lower bound from the |
| 2464 | // actual type and do a signed compare with the width of the type range. |
| 2465 | __ GetObjectType(input, temp, temp2); |
| 2466 | __ Subu(temp2, temp2, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2467 | __ Branch(is_false, gt, temp2, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
| 2468 | FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2469 | } |
| 2470 | |
| 2471 | // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
| 2472 | // Check if the constructor in the map is a function. |
| 2473 | __ lw(temp, FieldMemOperand(temp, Map::kConstructorOffset)); |
| 2474 | |
| 2475 | // Objects with a non-function constructor have class 'Object'. |
| 2476 | __ GetObjectType(temp, temp2, temp2); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2477 | if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Object"))) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2478 | __ Branch(is_true, ne, temp2, Operand(JS_FUNCTION_TYPE)); |
| 2479 | } else { |
| 2480 | __ Branch(is_false, ne, temp2, Operand(JS_FUNCTION_TYPE)); |
| 2481 | } |
| 2482 | |
| 2483 | // temp now contains the constructor function. Grab the |
| 2484 | // instance class name from there. |
| 2485 | __ lw(temp, FieldMemOperand(temp, JSFunction::kSharedFunctionInfoOffset)); |
| 2486 | __ lw(temp, FieldMemOperand(temp, |
| 2487 | SharedFunctionInfo::kInstanceClassNameOffset)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2488 | // The class name we are testing against is internalized since it's a literal. |
| 2489 | // The name in the constructor is internalized because of the way the context |
| 2490 | // is booted. This routine isn't expected to work for random API-created |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2491 | // classes and it doesn't have to because you can't access it with natives |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2492 | // syntax. Since both sides are internalized it is sufficient to use an |
| 2493 | // identity comparison. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2494 | |
| 2495 | // End with the address of this class_name instance in temp register. |
| 2496 | // On MIPS, the caller must do the comparison with Handle<String>class_name. |
| 2497 | } |
| 2498 | |
| 2499 | |
| 2500 | void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2501 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2502 | Register temp = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2503 | Register temp2 = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2504 | Handle<String> class_name = instr->hydrogen()->class_name(); |
| 2505 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2506 | EmitClassOfTest(instr->TrueLabel(chunk_), instr->FalseLabel(chunk_), |
| 2507 | class_name, input, temp, temp2); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2508 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2509 | EmitBranch(instr, eq, temp, Operand(class_name)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2510 | } |
| 2511 | |
| 2512 | |
| 2513 | void LCodeGen::DoCmpMapAndBranch(LCmpMapAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2514 | Register reg = ToRegister(instr->value()); |
| 2515 | Register temp = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2516 | |
| 2517 | __ lw(temp, FieldMemOperand(reg, HeapObject::kMapOffset)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2518 | EmitBranch(instr, eq, temp, Operand(instr->map())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2519 | } |
| 2520 | |
| 2521 | |
| 2522 | void LCodeGen::DoInstanceOf(LInstanceOf* instr) { |
| 2523 | Label true_label, done; |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2524 | ASSERT(ToRegister(instr->left()).is(a0)); // Object is in a0. |
| 2525 | ASSERT(ToRegister(instr->right()).is(a1)); // Function is in a1. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2526 | Register result = ToRegister(instr->result()); |
| 2527 | ASSERT(result.is(v0)); |
| 2528 | |
| 2529 | InstanceofStub stub(InstanceofStub::kArgsInRegisters); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2530 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2531 | |
| 2532 | __ Branch(&true_label, eq, result, Operand(zero_reg)); |
| 2533 | __ li(result, Operand(factory()->false_value())); |
| 2534 | __ Branch(&done); |
| 2535 | __ bind(&true_label); |
| 2536 | __ li(result, Operand(factory()->true_value())); |
| 2537 | __ bind(&done); |
| 2538 | } |
| 2539 | |
| 2540 | |
| 2541 | void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) { |
| 2542 | class DeferredInstanceOfKnownGlobal: public LDeferredCode { |
| 2543 | public: |
| 2544 | DeferredInstanceOfKnownGlobal(LCodeGen* codegen, |
| 2545 | LInstanceOfKnownGlobal* instr) |
| 2546 | : LDeferredCode(codegen), instr_(instr) { } |
| 2547 | virtual void Generate() { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2548 | codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2549 | } |
| 2550 | virtual LInstruction* instr() { return instr_; } |
| 2551 | Label* map_check() { return &map_check_; } |
| 2552 | |
| 2553 | private: |
| 2554 | LInstanceOfKnownGlobal* instr_; |
| 2555 | Label map_check_; |
| 2556 | }; |
| 2557 | |
| 2558 | DeferredInstanceOfKnownGlobal* deferred; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2559 | deferred = new(zone()) DeferredInstanceOfKnownGlobal(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2560 | |
| 2561 | Label done, false_result; |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2562 | Register object = ToRegister(instr->value()); |
| 2563 | Register temp = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2564 | Register result = ToRegister(instr->result()); |
| 2565 | |
| 2566 | ASSERT(object.is(a0)); |
| 2567 | ASSERT(result.is(v0)); |
| 2568 | |
| 2569 | // A Smi is not instance of anything. |
| 2570 | __ JumpIfSmi(object, &false_result); |
| 2571 | |
| 2572 | // This is the inlined call site instanceof cache. The two occurences of the |
| 2573 | // hole value will be patched to the last map/result pair generated by the |
| 2574 | // instanceof stub. |
| 2575 | Label cache_miss; |
| 2576 | Register map = temp; |
| 2577 | __ lw(map, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 2578 | |
| 2579 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| 2580 | __ bind(deferred->map_check()); // Label for calculating code patching. |
| 2581 | // We use Factory::the_hole_value() on purpose instead of loading from the |
| 2582 | // root array to force relocation to be able to later patch with |
| 2583 | // the cached map. |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 2584 | Handle<Cell> cell = factory()->NewCell(factory()->the_hole_value()); |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 2585 | __ li(at, Operand(Handle<Object>(cell))); |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 2586 | __ lw(at, FieldMemOperand(at, PropertyCell::kValueOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2587 | __ Branch(&cache_miss, ne, map, Operand(at)); |
| 2588 | // We use Factory::the_hole_value() on purpose instead of loading from the |
| 2589 | // root array to force relocation to be able to later patch |
| 2590 | // with true or false. |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2591 | __ li(result, Operand(factory()->the_hole_value()), CONSTANT_SIZE); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2592 | __ Branch(&done); |
| 2593 | |
| 2594 | // The inlined call site cache did not match. Check null and string before |
| 2595 | // calling the deferred code. |
| 2596 | __ bind(&cache_miss); |
| 2597 | // Null is not instance of anything. |
| 2598 | __ LoadRoot(temp, Heap::kNullValueRootIndex); |
| 2599 | __ Branch(&false_result, eq, object, Operand(temp)); |
| 2600 | |
| 2601 | // String values is not instance of anything. |
| 2602 | Condition cc = __ IsObjectStringType(object, temp, temp); |
| 2603 | __ Branch(&false_result, cc, temp, Operand(zero_reg)); |
| 2604 | |
| 2605 | // Go to the deferred code. |
| 2606 | __ Branch(deferred->entry()); |
| 2607 | |
| 2608 | __ bind(&false_result); |
| 2609 | __ LoadRoot(result, Heap::kFalseValueRootIndex); |
| 2610 | |
| 2611 | // Here result has either true or false. Deferred code also produces true or |
| 2612 | // false object. |
| 2613 | __ bind(deferred->exit()); |
| 2614 | __ bind(&done); |
| 2615 | } |
| 2616 | |
| 2617 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2618 | void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr, |
| 2619 | Label* map_check) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2620 | Register result = ToRegister(instr->result()); |
| 2621 | ASSERT(result.is(v0)); |
| 2622 | |
| 2623 | InstanceofStub::Flags flags = InstanceofStub::kNoFlags; |
| 2624 | flags = static_cast<InstanceofStub::Flags>( |
| 2625 | flags | InstanceofStub::kArgsInRegisters); |
| 2626 | flags = static_cast<InstanceofStub::Flags>( |
| 2627 | flags | InstanceofStub::kCallSiteInlineCheck); |
| 2628 | flags = static_cast<InstanceofStub::Flags>( |
| 2629 | flags | InstanceofStub::kReturnTrueFalseObject); |
| 2630 | InstanceofStub stub(flags); |
| 2631 | |
| 2632 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 2633 | |
| 2634 | // Get the temp register reserved by the instruction. This needs to be t0 as |
| 2635 | // its slot of the pushing of safepoint registers is used to communicate the |
| 2636 | // offset to the location of the map check. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2637 | Register temp = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2638 | ASSERT(temp.is(t0)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2639 | __ LoadHeapObject(InstanceofStub::right(), instr->function()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2640 | static const int kAdditionalDelta = 7; |
| 2641 | int delta = masm_->InstructionsGeneratedSince(map_check) + kAdditionalDelta; |
| 2642 | Label before_push_delta; |
| 2643 | __ bind(&before_push_delta); |
| 2644 | { |
| 2645 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2646 | __ li(temp, Operand(delta * kPointerSize), CONSTANT_SIZE); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2647 | __ StoreToSafepointRegisterSlot(temp, temp); |
| 2648 | } |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2649 | CallCodeGeneric(stub.GetCode(isolate()), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2650 | RelocInfo::CODE_TARGET, |
| 2651 | instr, |
| 2652 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
danno@chromium.org | e4bfb26 | 2012-05-04 10:50:07 +0000 | [diff] [blame] | 2653 | LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment(); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2654 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2655 | // Put the result value into the result register slot and |
| 2656 | // restore all registers. |
| 2657 | __ StoreToSafepointRegisterSlot(result, result); |
| 2658 | } |
| 2659 | |
| 2660 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2661 | void LCodeGen::DoInstanceSize(LInstanceSize* instr) { |
| 2662 | Register object = ToRegister(instr->object()); |
| 2663 | Register result = ToRegister(instr->result()); |
| 2664 | __ lw(result, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 2665 | __ lbu(result, FieldMemOperand(result, Map::kInstanceSizeOffset)); |
| 2666 | } |
| 2667 | |
| 2668 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2669 | void LCodeGen::DoCmpT(LCmpT* instr) { |
| 2670 | Token::Value op = instr->op(); |
| 2671 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2672 | Handle<Code> ic = CompareIC::GetUninitialized(isolate(), op); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2673 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2674 | // On MIPS there is no need for a "no inlined smi code" marker (nop). |
| 2675 | |
| 2676 | Condition condition = ComputeCompareCondition(op); |
| 2677 | // A minor optimization that relies on LoadRoot always emitting one |
| 2678 | // instruction. |
| 2679 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm()); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2680 | Label done, check; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2681 | __ Branch(USE_DELAY_SLOT, &done, condition, v0, Operand(zero_reg)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2682 | __ bind(&check); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2683 | __ LoadRoot(ToRegister(instr->result()), Heap::kTrueValueRootIndex); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2684 | ASSERT_EQ(1, masm()->InstructionsGeneratedSince(&check)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2685 | __ LoadRoot(ToRegister(instr->result()), Heap::kFalseValueRootIndex); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2686 | __ bind(&done); |
| 2687 | } |
| 2688 | |
| 2689 | |
| 2690 | void LCodeGen::DoReturn(LReturn* instr) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2691 | if (FLAG_trace && info()->IsOptimizing()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2692 | // Push the return value on the stack as the parameter. |
| 2693 | // Runtime::TraceExit returns its parameter in v0. |
| 2694 | __ push(v0); |
| 2695 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 2696 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2697 | if (info()->saves_caller_doubles()) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 2698 | ASSERT(NeedsEagerFrame()); |
| 2699 | BitVector* doubles = chunk()->allocated_double_registers(); |
| 2700 | BitVector::Iterator save_iterator(doubles); |
| 2701 | int count = 0; |
| 2702 | while (!save_iterator.Done()) { |
| 2703 | __ ldc1(DoubleRegister::FromAllocationIndex(save_iterator.Current()), |
| 2704 | MemOperand(sp, count * kDoubleSize)); |
| 2705 | save_iterator.Advance(); |
| 2706 | count++; |
| 2707 | } |
| 2708 | } |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 2709 | int no_frame_start = -1; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2710 | if (NeedsEagerFrame()) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2711 | __ mov(sp, fp); |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 2712 | no_frame_start = masm_->pc_offset(); |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 2713 | __ Pop(ra, fp); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2714 | } |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 2715 | if (instr->has_constant_parameter_count()) { |
| 2716 | int parameter_count = ToInteger32(instr->constant_parameter_count()); |
| 2717 | int32_t sp_delta = (parameter_count + 1) * kPointerSize; |
| 2718 | if (sp_delta != 0) { |
| 2719 | __ Addu(sp, sp, Operand(sp_delta)); |
| 2720 | } |
| 2721 | } else { |
| 2722 | Register reg = ToRegister(instr->parameter_count()); |
| 2723 | // The argument count parameter is a smi |
| 2724 | __ SmiUntag(reg); |
| 2725 | __ sll(at, reg, kPointerSizeLog2); |
| 2726 | __ Addu(sp, sp, at); |
| 2727 | } |
| 2728 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2729 | __ Jump(ra); |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 2730 | |
| 2731 | if (no_frame_start != -1) { |
| 2732 | info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
| 2733 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2734 | } |
| 2735 | |
| 2736 | |
| 2737 | void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { |
| 2738 | Register result = ToRegister(instr->result()); |
| 2739 | __ li(at, Operand(Handle<Object>(instr->hydrogen()->cell()))); |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 2740 | __ lw(result, FieldMemOperand(at, Cell::kValueOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2741 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2742 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| 2743 | DeoptimizeIf(eq, instr->environment(), result, Operand(at)); |
| 2744 | } |
| 2745 | } |
| 2746 | |
| 2747 | |
| 2748 | void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) { |
| 2749 | ASSERT(ToRegister(instr->global_object()).is(a0)); |
| 2750 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 2751 | |
| 2752 | __ li(a2, Operand(instr->name())); |
| 2753 | RelocInfo::Mode mode = instr->for_typeof() ? RelocInfo::CODE_TARGET |
| 2754 | : RelocInfo::CODE_TARGET_CONTEXT; |
| 2755 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2756 | CallCode(ic, mode, instr); |
| 2757 | } |
| 2758 | |
| 2759 | |
| 2760 | void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2761 | Register value = ToRegister(instr->value()); |
| 2762 | Register cell = scratch0(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2763 | |
| 2764 | // Load the cell. |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2765 | __ li(cell, Operand(instr->hydrogen()->cell())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2766 | |
| 2767 | // If the cell we are storing to contains the hole it could have |
| 2768 | // been deleted from the property dictionary. In that case, we need |
| 2769 | // to update the property details in the property dictionary to mark |
| 2770 | // it as no longer deleted. |
| 2771 | if (instr->hydrogen()->RequiresHoleCheck()) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2772 | // We use a temp to check the payload. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2773 | Register payload = ToRegister(instr->temp()); |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 2774 | __ lw(payload, FieldMemOperand(cell, Cell::kValueOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2775 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2776 | DeoptimizeIf(eq, instr->environment(), payload, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2777 | } |
| 2778 | |
| 2779 | // Store the value. |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 2780 | __ sw(value, FieldMemOperand(cell, Cell::kValueOffset)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2781 | // Cells are always rescanned, so no write barrier here. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2782 | } |
| 2783 | |
| 2784 | |
| 2785 | void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) { |
| 2786 | ASSERT(ToRegister(instr->global_object()).is(a1)); |
| 2787 | ASSERT(ToRegister(instr->value()).is(a0)); |
| 2788 | |
| 2789 | __ li(a2, Operand(instr->name())); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2790 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2791 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 2792 | : isolate()->builtins()->StoreIC_Initialize(); |
| 2793 | CallCode(ic, RelocInfo::CODE_TARGET_CONTEXT, instr); |
| 2794 | } |
| 2795 | |
| 2796 | |
| 2797 | void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
| 2798 | Register context = ToRegister(instr->context()); |
| 2799 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2800 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2801 | __ lw(result, ContextOperand(context, instr->slot_index())); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2802 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2803 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2804 | |
| 2805 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2806 | DeoptimizeIf(eq, instr->environment(), result, Operand(at)); |
| 2807 | } else { |
| 2808 | Label is_not_hole; |
| 2809 | __ Branch(&is_not_hole, ne, result, Operand(at)); |
| 2810 | __ LoadRoot(result, Heap::kUndefinedValueRootIndex); |
| 2811 | __ bind(&is_not_hole); |
| 2812 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2813 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2814 | } |
| 2815 | |
| 2816 | |
| 2817 | void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) { |
| 2818 | Register context = ToRegister(instr->context()); |
| 2819 | Register value = ToRegister(instr->value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2820 | Register scratch = scratch0(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2821 | MemOperand target = ContextOperand(context, instr->slot_index()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2822 | |
| 2823 | Label skip_assignment; |
| 2824 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2825 | if (instr->hydrogen()->RequiresHoleCheck()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2826 | __ lw(scratch, target); |
| 2827 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2828 | |
| 2829 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2830 | DeoptimizeIf(eq, instr->environment(), scratch, Operand(at)); |
| 2831 | } else { |
| 2832 | __ Branch(&skip_assignment, ne, scratch, Operand(at)); |
| 2833 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2834 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2835 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2836 | __ sw(value, target); |
| 2837 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2838 | SmiCheck check_needed = |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 2839 | instr->hydrogen()->value()->IsHeapObject() |
| 2840 | ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2841 | __ RecordWriteContextSlot(context, |
| 2842 | target.offset(), |
| 2843 | value, |
| 2844 | scratch0(), |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 2845 | GetRAState(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2846 | kSaveFPRegs, |
| 2847 | EMIT_REMEMBERED_SET, |
| 2848 | check_needed); |
| 2849 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2850 | |
| 2851 | __ bind(&skip_assignment); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2852 | } |
| 2853 | |
| 2854 | |
| 2855 | void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) { |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 2856 | HObjectAccess access = instr->hydrogen()->access(); |
| 2857 | int offset = access.offset(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2858 | Register object = ToRegister(instr->object()); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 2859 | if (instr->hydrogen()->representation().IsDouble()) { |
| 2860 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 2861 | __ ldc1(result, FieldMemOperand(object, offset)); |
| 2862 | return; |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 2863 | } |
| 2864 | |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 2865 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 2866 | if (access.IsInobject()) { |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 2867 | __ lw(result, FieldMemOperand(object, offset)); |
| 2868 | } else { |
| 2869 | __ lw(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
| 2870 | __ lw(result, FieldMemOperand(result, offset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2871 | } |
| 2872 | } |
| 2873 | |
| 2874 | |
| 2875 | void LCodeGen::EmitLoadFieldOrConstantFunction(Register result, |
| 2876 | Register object, |
| 2877 | Handle<Map> type, |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2878 | Handle<String> name, |
| 2879 | LEnvironment* env) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2880 | LookupResult lookup(isolate()); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 2881 | type->LookupDescriptor(NULL, *name, &lookup); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2882 | ASSERT(lookup.IsFound() || lookup.IsCacheable()); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2883 | if (lookup.IsField()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2884 | int index = lookup.GetLocalFieldIndexFromMap(*type); |
| 2885 | int offset = index * kPointerSize; |
| 2886 | if (index < 0) { |
| 2887 | // Negative property indices are in-object properties, indexed |
| 2888 | // from the end of the fixed part of the object. |
| 2889 | __ lw(result, FieldMemOperand(object, offset + type->instance_size())); |
| 2890 | } else { |
| 2891 | // Non-negative property indices are in the properties array. |
| 2892 | __ lw(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
| 2893 | __ lw(result, FieldMemOperand(result, offset + FixedArray::kHeaderSize)); |
| 2894 | } |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2895 | } else if (lookup.IsConstantFunction()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2896 | Handle<JSFunction> function(lookup.GetConstantFunctionFromMap(*type)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2897 | __ LoadHeapObject(result, function); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2898 | } else { |
| 2899 | // Negative lookup. |
| 2900 | // Check prototypes. |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2901 | Handle<HeapObject> current(HeapObject::cast((*type)->prototype())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2902 | Heap* heap = type->GetHeap(); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2903 | while (*current != heap->null_value()) { |
| 2904 | __ LoadHeapObject(result, current); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2905 | __ lw(result, FieldMemOperand(result, HeapObject::kMapOffset)); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2906 | DeoptimizeIf(ne, env, result, Operand(Handle<Map>(current->map()))); |
| 2907 | current = |
| 2908 | Handle<HeapObject>(HeapObject::cast(current->map()->prototype())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2909 | } |
| 2910 | __ LoadRoot(result, Heap::kUndefinedValueRootIndex); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2911 | } |
| 2912 | } |
| 2913 | |
| 2914 | |
| 2915 | void LCodeGen::DoLoadNamedFieldPolymorphic(LLoadNamedFieldPolymorphic* instr) { |
| 2916 | Register object = ToRegister(instr->object()); |
| 2917 | Register result = ToRegister(instr->result()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2918 | Register object_map = scratch0(); |
yangguo@chromium.org | 5f0b8ea | 2012-05-16 12:37:04 +0000 | [diff] [blame] | 2919 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2920 | int map_count = instr->hydrogen()->types()->length(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2921 | bool need_generic = instr->hydrogen()->need_generic(); |
| 2922 | |
| 2923 | if (map_count == 0 && !need_generic) { |
| 2924 | DeoptimizeIf(al, instr->environment()); |
| 2925 | return; |
| 2926 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2927 | Handle<String> name = instr->hydrogen()->name(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2928 | Label done; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2929 | __ lw(object_map, FieldMemOperand(object, HeapObject::kMapOffset)); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2930 | for (int i = 0; i < map_count; ++i) { |
| 2931 | bool last = (i == map_count - 1); |
| 2932 | Handle<Map> map = instr->hydrogen()->types()->at(i); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2933 | Label check_passed; |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 2934 | __ CompareMapAndBranch(object_map, map, &check_passed, eq, &check_passed); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2935 | if (last && !need_generic) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2936 | DeoptimizeIf(al, instr->environment()); |
| 2937 | __ bind(&check_passed); |
| 2938 | EmitLoadFieldOrConstantFunction( |
| 2939 | result, object, map, name, instr->environment()); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2940 | } else { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2941 | Label next; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2942 | __ Branch(&next); |
| 2943 | __ bind(&check_passed); |
| 2944 | EmitLoadFieldOrConstantFunction( |
| 2945 | result, object, map, name, instr->environment()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2946 | __ Branch(&done); |
| 2947 | __ bind(&next); |
| 2948 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2949 | } |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2950 | if (need_generic) { |
| 2951 | __ li(a2, Operand(name)); |
| 2952 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2953 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2954 | } |
| 2955 | __ bind(&done); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2956 | } |
| 2957 | |
| 2958 | |
| 2959 | void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) { |
| 2960 | ASSERT(ToRegister(instr->object()).is(a0)); |
| 2961 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 2962 | |
| 2963 | // Name is always in a2. |
| 2964 | __ li(a2, Operand(instr->name())); |
| 2965 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2966 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2967 | } |
| 2968 | |
| 2969 | |
| 2970 | void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) { |
| 2971 | Register scratch = scratch0(); |
| 2972 | Register function = ToRegister(instr->function()); |
| 2973 | Register result = ToRegister(instr->result()); |
| 2974 | |
| 2975 | // Check that the function really is a function. Load map into the |
| 2976 | // result register. |
| 2977 | __ GetObjectType(function, result, scratch); |
| 2978 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(JS_FUNCTION_TYPE)); |
| 2979 | |
| 2980 | // Make sure that the function has an instance prototype. |
| 2981 | Label non_instance; |
| 2982 | __ lbu(scratch, FieldMemOperand(result, Map::kBitFieldOffset)); |
| 2983 | __ And(scratch, scratch, Operand(1 << Map::kHasNonInstancePrototype)); |
| 2984 | __ Branch(&non_instance, ne, scratch, Operand(zero_reg)); |
| 2985 | |
| 2986 | // Get the prototype or initial map from the function. |
| 2987 | __ lw(result, |
| 2988 | FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2989 | |
| 2990 | // Check that the function has a prototype or an initial map. |
| 2991 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| 2992 | DeoptimizeIf(eq, instr->environment(), result, Operand(at)); |
| 2993 | |
| 2994 | // If the function does not have an initial map, we're done. |
| 2995 | Label done; |
| 2996 | __ GetObjectType(result, scratch, scratch); |
| 2997 | __ Branch(&done, ne, scratch, Operand(MAP_TYPE)); |
| 2998 | |
| 2999 | // Get the prototype from the initial map. |
| 3000 | __ lw(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
| 3001 | __ Branch(&done); |
| 3002 | |
| 3003 | // Non-instance prototype: Fetch prototype from constructor field |
| 3004 | // in initial map. |
| 3005 | __ bind(&non_instance); |
| 3006 | __ lw(result, FieldMemOperand(result, Map::kConstructorOffset)); |
| 3007 | |
| 3008 | // All done. |
| 3009 | __ bind(&done); |
| 3010 | } |
| 3011 | |
| 3012 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3013 | void LCodeGen::DoLoadExternalArrayPointer( |
| 3014 | LLoadExternalArrayPointer* instr) { |
| 3015 | Register to_reg = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3016 | Register from_reg = ToRegister(instr->object()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3017 | __ lw(to_reg, FieldMemOperand(from_reg, |
| 3018 | ExternalArray::kExternalPointerOffset)); |
| 3019 | } |
| 3020 | |
| 3021 | |
| 3022 | void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) { |
| 3023 | Register arguments = ToRegister(instr->arguments()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3024 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3025 | if (instr->length()->IsConstantOperand() && |
| 3026 | instr->index()->IsConstantOperand()) { |
| 3027 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 3028 | int const_length = ToInteger32(LConstantOperand::cast(instr->length())); |
| 3029 | int index = (const_length - const_index) + 1; |
| 3030 | __ lw(result, MemOperand(arguments, index * kPointerSize)); |
| 3031 | } else { |
| 3032 | Register length = ToRegister(instr->length()); |
| 3033 | Register index = ToRegister(instr->index()); |
| 3034 | // There are two words between the frame pointer and the last argument. |
| 3035 | // Subtracting from length accounts for one of them, add one more. |
| 3036 | __ subu(length, length, index); |
| 3037 | __ Addu(length, length, Operand(1)); |
| 3038 | __ sll(length, length, kPointerSizeLog2); |
| 3039 | __ Addu(at, arguments, Operand(length)); |
| 3040 | __ lw(result, MemOperand(at, 0)); |
| 3041 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3042 | } |
| 3043 | |
| 3044 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3045 | void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) { |
| 3046 | Register external_pointer = ToRegister(instr->elements()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3047 | Register key = no_reg; |
| 3048 | ElementsKind elements_kind = instr->elements_kind(); |
| 3049 | bool key_is_constant = instr->key()->IsConstantOperand(); |
| 3050 | int constant_key = 0; |
| 3051 | if (key_is_constant) { |
| 3052 | constant_key = ToInteger32(LConstantOperand::cast(instr->key())); |
| 3053 | if (constant_key & 0xF0000000) { |
| 3054 | Abort("array index constant value too big."); |
| 3055 | } |
| 3056 | } else { |
| 3057 | key = ToRegister(instr->key()); |
| 3058 | } |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 3059 | int element_size_shift = ElementsKindToShiftSize(elements_kind); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 3060 | int shift_size = (instr->hydrogen()->key()->representation().IsSmi()) |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 3061 | ? (element_size_shift - kSmiTagSize) : element_size_shift; |
| 3062 | int additional_offset = instr->additional_index() << element_size_shift; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3063 | |
| 3064 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS || |
| 3065 | elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
| 3066 | FPURegister result = ToDoubleRegister(instr->result()); |
| 3067 | if (key_is_constant) { |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 3068 | __ Addu(scratch0(), external_pointer, constant_key << element_size_shift); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3069 | } else { |
| 3070 | __ sll(scratch0(), key, shift_size); |
| 3071 | __ Addu(scratch0(), scratch0(), external_pointer); |
| 3072 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3073 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
| 3074 | __ lwc1(result, MemOperand(scratch0(), additional_offset)); |
| 3075 | __ cvt_d_s(result, result); |
| 3076 | } else { // i.e. elements_kind == EXTERNAL_DOUBLE_ELEMENTS |
| 3077 | __ ldc1(result, MemOperand(scratch0(), additional_offset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3078 | } |
| 3079 | } else { |
| 3080 | Register result = ToRegister(instr->result()); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 3081 | MemOperand mem_operand = PrepareKeyedOperand( |
| 3082 | key, external_pointer, key_is_constant, constant_key, |
| 3083 | element_size_shift, shift_size, |
| 3084 | instr->additional_index(), additional_offset); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3085 | switch (elements_kind) { |
| 3086 | case EXTERNAL_BYTE_ELEMENTS: |
| 3087 | __ lb(result, mem_operand); |
| 3088 | break; |
| 3089 | case EXTERNAL_PIXEL_ELEMENTS: |
| 3090 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 3091 | __ lbu(result, mem_operand); |
| 3092 | break; |
| 3093 | case EXTERNAL_SHORT_ELEMENTS: |
| 3094 | __ lh(result, mem_operand); |
| 3095 | break; |
| 3096 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
| 3097 | __ lhu(result, mem_operand); |
| 3098 | break; |
| 3099 | case EXTERNAL_INT_ELEMENTS: |
| 3100 | __ lw(result, mem_operand); |
| 3101 | break; |
| 3102 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
| 3103 | __ lw(result, mem_operand); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 3104 | if (!instr->hydrogen()->CheckFlag(HInstruction::kUint32)) { |
| 3105 | DeoptimizeIf(Ugreater_equal, instr->environment(), |
| 3106 | result, Operand(0x80000000)); |
| 3107 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3108 | break; |
| 3109 | case EXTERNAL_FLOAT_ELEMENTS: |
| 3110 | case EXTERNAL_DOUBLE_ELEMENTS: |
| 3111 | case FAST_DOUBLE_ELEMENTS: |
| 3112 | case FAST_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3113 | case FAST_SMI_ELEMENTS: |
| 3114 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
| 3115 | case FAST_HOLEY_ELEMENTS: |
| 3116 | case FAST_HOLEY_SMI_ELEMENTS: |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3117 | case DICTIONARY_ELEMENTS: |
| 3118 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
| 3119 | UNREACHABLE(); |
| 3120 | break; |
| 3121 | } |
| 3122 | } |
| 3123 | } |
| 3124 | |
| 3125 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3126 | void LCodeGen::DoLoadKeyedFixedDoubleArray(LLoadKeyed* instr) { |
| 3127 | Register elements = ToRegister(instr->elements()); |
| 3128 | bool key_is_constant = instr->key()->IsConstantOperand(); |
| 3129 | Register key = no_reg; |
| 3130 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 3131 | Register scratch = scratch0(); |
| 3132 | |
| 3133 | int element_size_shift = ElementsKindToShiftSize(FAST_DOUBLE_ELEMENTS); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 3134 | int shift_size = (instr->hydrogen()->key()->representation().IsSmi()) |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3135 | ? (element_size_shift - kSmiTagSize) : element_size_shift; |
| 3136 | int constant_key = 0; |
| 3137 | if (key_is_constant) { |
| 3138 | constant_key = ToInteger32(LConstantOperand::cast(instr->key())); |
| 3139 | if (constant_key & 0xF0000000) { |
| 3140 | Abort("array index constant value too big."); |
| 3141 | } |
| 3142 | } else { |
| 3143 | key = ToRegister(instr->key()); |
| 3144 | } |
| 3145 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3146 | int base_offset = (FixedDoubleArray::kHeaderSize - kHeapObjectTag) + |
| 3147 | ((constant_key + instr->additional_index()) << element_size_shift); |
| 3148 | if (!key_is_constant) { |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3149 | __ sll(scratch, key, shift_size); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3150 | __ Addu(elements, elements, scratch); |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3151 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3152 | __ Addu(elements, elements, Operand(base_offset)); |
| 3153 | __ ldc1(result, MemOperand(elements)); |
| 3154 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 3155 | __ lw(scratch, MemOperand(elements, sizeof(kHoleNanLower32))); |
| 3156 | DeoptimizeIf(eq, instr->environment(), scratch, Operand(kHoleNanUpper32)); |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3157 | } |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3158 | } |
| 3159 | |
| 3160 | |
| 3161 | void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) { |
| 3162 | Register elements = ToRegister(instr->elements()); |
| 3163 | Register result = ToRegister(instr->result()); |
| 3164 | Register scratch = scratch0(); |
| 3165 | Register store_base = scratch; |
| 3166 | int offset = 0; |
| 3167 | |
| 3168 | if (instr->key()->IsConstantOperand()) { |
| 3169 | LConstantOperand* const_operand = LConstantOperand::cast(instr->key()); |
| 3170 | offset = FixedArray::OffsetOfElementAt(ToInteger32(const_operand) + |
| 3171 | instr->additional_index()); |
| 3172 | store_base = elements; |
| 3173 | } else { |
| 3174 | Register key = EmitLoadRegister(instr->key(), scratch0()); |
| 3175 | // Even though the HLoadKeyed instruction forces the input |
| 3176 | // representation for the key to be an integer, the input gets replaced |
| 3177 | // during bound check elimination with the index argument to the bounds |
| 3178 | // check, which can be tagged, so that case must be handled here, too. |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 3179 | if (instr->hydrogen()->key()->representation().IsSmi()) { |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3180 | __ sll(scratch, key, kPointerSizeLog2 - kSmiTagSize); |
| 3181 | __ addu(scratch, elements, scratch); |
| 3182 | } else { |
| 3183 | __ sll(scratch, key, kPointerSizeLog2); |
| 3184 | __ addu(scratch, elements, scratch); |
| 3185 | } |
| 3186 | offset = FixedArray::OffsetOfElementAt(instr->additional_index()); |
| 3187 | } |
| 3188 | __ lw(result, FieldMemOperand(store_base, offset)); |
| 3189 | |
| 3190 | // Check for the hole value. |
| 3191 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 3192 | if (IsFastSmiElementsKind(instr->hydrogen()->elements_kind())) { |
| 3193 | __ And(scratch, result, Operand(kSmiTagMask)); |
| 3194 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(zero_reg)); |
| 3195 | } else { |
| 3196 | __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex); |
| 3197 | DeoptimizeIf(eq, instr->environment(), result, Operand(scratch)); |
| 3198 | } |
| 3199 | } |
| 3200 | } |
| 3201 | |
| 3202 | |
| 3203 | void LCodeGen::DoLoadKeyed(LLoadKeyed* instr) { |
| 3204 | if (instr->is_external()) { |
| 3205 | DoLoadKeyedExternalArray(instr); |
| 3206 | } else if (instr->hydrogen()->representation().IsDouble()) { |
| 3207 | DoLoadKeyedFixedDoubleArray(instr); |
| 3208 | } else { |
| 3209 | DoLoadKeyedFixedArray(instr); |
| 3210 | } |
| 3211 | } |
| 3212 | |
| 3213 | |
| 3214 | MemOperand LCodeGen::PrepareKeyedOperand(Register key, |
| 3215 | Register base, |
| 3216 | bool key_is_constant, |
| 3217 | int constant_key, |
| 3218 | int element_size, |
| 3219 | int shift_size, |
| 3220 | int additional_index, |
| 3221 | int additional_offset) { |
| 3222 | if (additional_index != 0 && !key_is_constant) { |
| 3223 | additional_index *= 1 << (element_size - shift_size); |
| 3224 | __ Addu(scratch0(), key, Operand(additional_index)); |
| 3225 | } |
| 3226 | |
| 3227 | if (key_is_constant) { |
| 3228 | return MemOperand(base, |
| 3229 | (constant_key << element_size) + additional_offset); |
| 3230 | } |
| 3231 | |
| 3232 | if (additional_index == 0) { |
| 3233 | if (shift_size >= 0) { |
| 3234 | __ sll(scratch0(), key, shift_size); |
| 3235 | __ Addu(scratch0(), base, scratch0()); |
| 3236 | return MemOperand(scratch0()); |
| 3237 | } else { |
| 3238 | ASSERT_EQ(-1, shift_size); |
| 3239 | __ srl(scratch0(), key, 1); |
| 3240 | __ Addu(scratch0(), base, scratch0()); |
| 3241 | return MemOperand(scratch0()); |
| 3242 | } |
| 3243 | } |
| 3244 | |
| 3245 | if (shift_size >= 0) { |
| 3246 | __ sll(scratch0(), scratch0(), shift_size); |
| 3247 | __ Addu(scratch0(), base, scratch0()); |
| 3248 | return MemOperand(scratch0()); |
| 3249 | } else { |
| 3250 | ASSERT_EQ(-1, shift_size); |
| 3251 | __ srl(scratch0(), scratch0(), 1); |
| 3252 | __ Addu(scratch0(), base, scratch0()); |
| 3253 | return MemOperand(scratch0()); |
| 3254 | } |
| 3255 | } |
| 3256 | |
| 3257 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3258 | void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) { |
| 3259 | ASSERT(ToRegister(instr->object()).is(a1)); |
| 3260 | ASSERT(ToRegister(instr->key()).is(a0)); |
| 3261 | |
| 3262 | Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize(); |
| 3263 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 3264 | } |
| 3265 | |
| 3266 | |
| 3267 | void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) { |
| 3268 | Register scratch = scratch0(); |
| 3269 | Register temp = scratch1(); |
| 3270 | Register result = ToRegister(instr->result()); |
| 3271 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3272 | if (instr->hydrogen()->from_inlined()) { |
| 3273 | __ Subu(result, sp, 2 * kPointerSize); |
| 3274 | } else { |
| 3275 | // Check if the calling frame is an arguments adaptor frame. |
| 3276 | Label done, adapted; |
| 3277 | __ lw(scratch, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 3278 | __ lw(result, MemOperand(scratch, StandardFrameConstants::kContextOffset)); |
| 3279 | __ Xor(temp, result, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3280 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3281 | // Result is the frame pointer for the frame if not adapted and for the real |
| 3282 | // frame below the adaptor frame if adapted. |
| 3283 | __ Movn(result, fp, temp); // Move only if temp is not equal to zero (ne). |
| 3284 | __ Movz(result, scratch, temp); // Move only if temp is equal to zero (eq). |
| 3285 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3286 | } |
| 3287 | |
| 3288 | |
| 3289 | void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3290 | Register elem = ToRegister(instr->elements()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3291 | Register result = ToRegister(instr->result()); |
| 3292 | |
| 3293 | Label done; |
| 3294 | |
| 3295 | // If no arguments adaptor frame the number of arguments is fixed. |
| 3296 | __ Addu(result, zero_reg, Operand(scope()->num_parameters())); |
| 3297 | __ Branch(&done, eq, fp, Operand(elem)); |
| 3298 | |
| 3299 | // Arguments adaptor frame present. Get argument length from there. |
| 3300 | __ lw(result, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 3301 | __ lw(result, |
| 3302 | MemOperand(result, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 3303 | __ SmiUntag(result); |
| 3304 | |
| 3305 | // Argument length is in result register. |
| 3306 | __ bind(&done); |
| 3307 | } |
| 3308 | |
| 3309 | |
rossberg@chromium.org | 2c067b1 | 2012-03-19 11:01:52 +0000 | [diff] [blame] | 3310 | void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3311 | Register receiver = ToRegister(instr->receiver()); |
| 3312 | Register function = ToRegister(instr->function()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3313 | Register scratch = scratch0(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3314 | |
| 3315 | // If the receiver is null or undefined, we have to pass the global |
| 3316 | // object as a receiver to normal functions. Values have to be |
| 3317 | // passed unchanged to builtins and strict-mode functions. |
| 3318 | Label global_object, receiver_ok; |
| 3319 | |
| 3320 | // Do not transform the receiver to object for strict mode |
| 3321 | // functions. |
| 3322 | __ lw(scratch, |
| 3323 | FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 3324 | __ lw(scratch, |
| 3325 | FieldMemOperand(scratch, SharedFunctionInfo::kCompilerHintsOffset)); |
| 3326 | |
| 3327 | // Do not transform the receiver to object for builtins. |
| 3328 | int32_t strict_mode_function_mask = |
| 3329 | 1 << (SharedFunctionInfo::kStrictModeFunction + kSmiTagSize); |
| 3330 | int32_t native_mask = 1 << (SharedFunctionInfo::kNative + kSmiTagSize); |
| 3331 | __ And(scratch, scratch, Operand(strict_mode_function_mask | native_mask)); |
| 3332 | __ Branch(&receiver_ok, ne, scratch, Operand(zero_reg)); |
| 3333 | |
| 3334 | // Normal function. Replace undefined or null with global receiver. |
| 3335 | __ LoadRoot(scratch, Heap::kNullValueRootIndex); |
| 3336 | __ Branch(&global_object, eq, receiver, Operand(scratch)); |
| 3337 | __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 3338 | __ Branch(&global_object, eq, receiver, Operand(scratch)); |
| 3339 | |
| 3340 | // Deoptimize if the receiver is not a JS object. |
| 3341 | __ And(scratch, receiver, Operand(kSmiTagMask)); |
| 3342 | DeoptimizeIf(eq, instr->environment(), scratch, Operand(zero_reg)); |
| 3343 | |
| 3344 | __ GetObjectType(receiver, scratch, scratch); |
| 3345 | DeoptimizeIf(lt, instr->environment(), |
| 3346 | scratch, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 3347 | __ Branch(&receiver_ok); |
| 3348 | |
| 3349 | __ bind(&global_object); |
| 3350 | __ lw(receiver, GlobalObjectOperand()); |
| 3351 | __ lw(receiver, |
| 3352 | FieldMemOperand(receiver, JSGlobalObject::kGlobalReceiverOffset)); |
| 3353 | __ bind(&receiver_ok); |
rossberg@chromium.org | 2c067b1 | 2012-03-19 11:01:52 +0000 | [diff] [blame] | 3354 | } |
| 3355 | |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 3356 | |
rossberg@chromium.org | 2c067b1 | 2012-03-19 11:01:52 +0000 | [diff] [blame] | 3357 | void LCodeGen::DoApplyArguments(LApplyArguments* instr) { |
| 3358 | Register receiver = ToRegister(instr->receiver()); |
| 3359 | Register function = ToRegister(instr->function()); |
| 3360 | Register length = ToRegister(instr->length()); |
| 3361 | Register elements = ToRegister(instr->elements()); |
| 3362 | Register scratch = scratch0(); |
| 3363 | ASSERT(receiver.is(a0)); // Used for parameter count. |
| 3364 | ASSERT(function.is(a1)); // Required by InvokeFunction. |
| 3365 | ASSERT(ToRegister(instr->result()).is(v0)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3366 | |
| 3367 | // Copy the arguments to this function possibly from the |
| 3368 | // adaptor frame below it. |
| 3369 | const uint32_t kArgumentsLimit = 1 * KB; |
| 3370 | DeoptimizeIf(hi, instr->environment(), length, Operand(kArgumentsLimit)); |
| 3371 | |
| 3372 | // Push the receiver and use the register to keep the original |
| 3373 | // number of arguments. |
| 3374 | __ push(receiver); |
| 3375 | __ Move(receiver, length); |
| 3376 | // The arguments are at a one pointer size offset from elements. |
| 3377 | __ Addu(elements, elements, Operand(1 * kPointerSize)); |
| 3378 | |
| 3379 | // Loop through the arguments pushing them onto the execution |
| 3380 | // stack. |
| 3381 | Label invoke, loop; |
| 3382 | // length is a small non-negative integer, due to the test above. |
| 3383 | __ Branch(USE_DELAY_SLOT, &invoke, eq, length, Operand(zero_reg)); |
| 3384 | __ sll(scratch, length, 2); |
| 3385 | __ bind(&loop); |
| 3386 | __ Addu(scratch, elements, scratch); |
| 3387 | __ lw(scratch, MemOperand(scratch)); |
| 3388 | __ push(scratch); |
| 3389 | __ Subu(length, length, Operand(1)); |
| 3390 | __ Branch(USE_DELAY_SLOT, &loop, ne, length, Operand(zero_reg)); |
| 3391 | __ sll(scratch, length, 2); |
| 3392 | |
| 3393 | __ bind(&invoke); |
danno@chromium.org | e4bfb26 | 2012-05-04 10:50:07 +0000 | [diff] [blame] | 3394 | ASSERT(instr->HasPointerMap()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3395 | LPointerMap* pointers = instr->pointer_map(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3396 | RecordPosition(pointers->position()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 3397 | SafepointGenerator safepoint_generator( |
| 3398 | this, pointers, Safepoint::kLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3399 | // The number of arguments is stored in receiver which is a0, as expected |
| 3400 | // by InvokeFunction. |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3401 | ParameterCount actual(receiver); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3402 | __ InvokeFunction(function, actual, CALL_FUNCTION, |
| 3403 | safepoint_generator, CALL_AS_METHOD); |
| 3404 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3405 | } |
| 3406 | |
| 3407 | |
| 3408 | void LCodeGen::DoPushArgument(LPushArgument* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3409 | LOperand* argument = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3410 | if (argument->IsDoubleRegister() || argument->IsDoubleStackSlot()) { |
| 3411 | Abort("DoPushArgument not implemented for double type."); |
| 3412 | } else { |
| 3413 | Register argument_reg = EmitLoadRegister(argument, at); |
| 3414 | __ push(argument_reg); |
| 3415 | } |
| 3416 | } |
| 3417 | |
| 3418 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3419 | void LCodeGen::DoDrop(LDrop* instr) { |
| 3420 | __ Drop(instr->count()); |
| 3421 | } |
| 3422 | |
| 3423 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3424 | void LCodeGen::DoThisFunction(LThisFunction* instr) { |
| 3425 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 3426 | __ lw(result, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3427 | } |
| 3428 | |
| 3429 | |
| 3430 | void LCodeGen::DoContext(LContext* instr) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 3431 | // If there is a non-return use, the context must be moved to a register. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3432 | Register result = ToRegister(instr->result()); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 3433 | for (HUseIterator it(instr->hydrogen()->uses()); !it.Done(); it.Advance()) { |
| 3434 | if (!it.value()->IsReturn()) { |
| 3435 | __ mov(result, cp); |
| 3436 | return; |
| 3437 | } |
| 3438 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3439 | } |
| 3440 | |
| 3441 | |
| 3442 | void LCodeGen::DoOuterContext(LOuterContext* instr) { |
| 3443 | Register context = ToRegister(instr->context()); |
| 3444 | Register result = ToRegister(instr->result()); |
| 3445 | __ lw(result, |
| 3446 | MemOperand(context, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
| 3447 | } |
| 3448 | |
| 3449 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 3450 | void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) { |
| 3451 | __ LoadHeapObject(scratch0(), instr->hydrogen()->pairs()); |
| 3452 | __ li(scratch1(), Operand(Smi::FromInt(instr->hydrogen()->flags()))); |
| 3453 | // The context is the first argument. |
| 3454 | __ Push(cp, scratch0(), scratch1()); |
| 3455 | CallRuntime(Runtime::kDeclareGlobals, 3, instr); |
| 3456 | } |
| 3457 | |
| 3458 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3459 | void LCodeGen::DoGlobalObject(LGlobalObject* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3460 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3461 | __ lw(result, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3462 | } |
| 3463 | |
| 3464 | |
| 3465 | void LCodeGen::DoGlobalReceiver(LGlobalReceiver* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3466 | Register global = ToRegister(instr->global_object()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3467 | Register result = ToRegister(instr->result()); |
| 3468 | __ lw(result, FieldMemOperand(global, GlobalObject::kGlobalReceiverOffset)); |
| 3469 | } |
| 3470 | |
| 3471 | |
| 3472 | void LCodeGen::CallKnownFunction(Handle<JSFunction> function, |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3473 | int formal_parameter_count, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3474 | int arity, |
| 3475 | LInstruction* instr, |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3476 | CallKind call_kind, |
| 3477 | A1State a1_state) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3478 | bool dont_adapt_arguments = |
| 3479 | formal_parameter_count == SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 3480 | bool can_invoke_directly = |
| 3481 | dont_adapt_arguments || formal_parameter_count == arity; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3482 | |
| 3483 | LPointerMap* pointers = instr->pointer_map(); |
| 3484 | RecordPosition(pointers->position()); |
| 3485 | |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3486 | if (can_invoke_directly) { |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3487 | if (a1_state == A1_UNINITIALIZED) { |
| 3488 | __ LoadHeapObject(a1, function); |
| 3489 | } |
| 3490 | |
verwaest@chromium.org | b6d052d | 2012-07-27 08:03:27 +0000 | [diff] [blame] | 3491 | // Change context. |
| 3492 | __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3493 | |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3494 | // Set r0 to arguments count if adaption is not needed. Assumes that r0 |
| 3495 | // is available to write to at this point. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3496 | if (dont_adapt_arguments) { |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3497 | __ li(a0, Operand(arity)); |
| 3498 | } |
| 3499 | |
| 3500 | // Invoke function. |
| 3501 | __ SetCallKind(t1, call_kind); |
| 3502 | __ lw(at, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
| 3503 | __ Call(at); |
| 3504 | |
| 3505 | // Set up deoptimization. |
| 3506 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
| 3507 | } else { |
| 3508 | SafepointGenerator generator(this, pointers, Safepoint::kLazyDeopt); |
| 3509 | ParameterCount count(arity); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3510 | ParameterCount expected(formal_parameter_count); |
| 3511 | __ InvokeFunction( |
| 3512 | function, expected, count, CALL_FUNCTION, generator, call_kind); |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3513 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3514 | |
| 3515 | // Restore context. |
| 3516 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3517 | } |
| 3518 | |
| 3519 | |
| 3520 | void LCodeGen::DoCallConstantFunction(LCallConstantFunction* instr) { |
| 3521 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3522 | __ mov(a0, v0); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3523 | CallKnownFunction(instr->hydrogen()->function(), |
| 3524 | instr->hydrogen()->formal_parameter_count(), |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3525 | instr->arity(), |
| 3526 | instr, |
| 3527 | CALL_AS_METHOD, |
| 3528 | A1_UNINITIALIZED); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3529 | } |
| 3530 | |
| 3531 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3532 | void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3533 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3534 | Register result = ToRegister(instr->result()); |
| 3535 | Register scratch = scratch0(); |
| 3536 | |
| 3537 | // Deoptimize if not a heap number. |
| 3538 | __ lw(scratch, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 3539 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 3540 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(at)); |
| 3541 | |
| 3542 | Label done; |
| 3543 | Register exponent = scratch0(); |
| 3544 | scratch = no_reg; |
| 3545 | __ lw(exponent, FieldMemOperand(input, HeapNumber::kExponentOffset)); |
| 3546 | // Check the sign of the argument. If the argument is positive, just |
| 3547 | // return it. |
| 3548 | __ Move(result, input); |
| 3549 | __ And(at, exponent, Operand(HeapNumber::kSignMask)); |
| 3550 | __ Branch(&done, eq, at, Operand(zero_reg)); |
| 3551 | |
| 3552 | // Input is negative. Reverse its sign. |
| 3553 | // Preserve the value of all registers. |
| 3554 | { |
| 3555 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 3556 | |
| 3557 | // Registers were saved at the safepoint, so we can use |
| 3558 | // many scratch registers. |
| 3559 | Register tmp1 = input.is(a1) ? a0 : a1; |
| 3560 | Register tmp2 = input.is(a2) ? a0 : a2; |
| 3561 | Register tmp3 = input.is(a3) ? a0 : a3; |
| 3562 | Register tmp4 = input.is(t0) ? a0 : t0; |
| 3563 | |
| 3564 | // exponent: floating point exponent value. |
| 3565 | |
| 3566 | Label allocated, slow; |
| 3567 | __ LoadRoot(tmp4, Heap::kHeapNumberMapRootIndex); |
| 3568 | __ AllocateHeapNumber(tmp1, tmp2, tmp3, tmp4, &slow); |
| 3569 | __ Branch(&allocated); |
| 3570 | |
| 3571 | // Slow case: Call the runtime system to do the number allocation. |
| 3572 | __ bind(&slow); |
| 3573 | |
| 3574 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, instr); |
| 3575 | // Set the pointer to the new heap number in tmp. |
| 3576 | if (!tmp1.is(v0)) |
| 3577 | __ mov(tmp1, v0); |
| 3578 | // Restore input_reg after call to runtime. |
| 3579 | __ LoadFromSafepointRegisterSlot(input, input); |
| 3580 | __ lw(exponent, FieldMemOperand(input, HeapNumber::kExponentOffset)); |
| 3581 | |
| 3582 | __ bind(&allocated); |
| 3583 | // exponent: floating point exponent value. |
| 3584 | // tmp1: allocated heap number. |
| 3585 | __ And(exponent, exponent, Operand(~HeapNumber::kSignMask)); |
| 3586 | __ sw(exponent, FieldMemOperand(tmp1, HeapNumber::kExponentOffset)); |
| 3587 | __ lw(tmp2, FieldMemOperand(input, HeapNumber::kMantissaOffset)); |
| 3588 | __ sw(tmp2, FieldMemOperand(tmp1, HeapNumber::kMantissaOffset)); |
| 3589 | |
| 3590 | __ StoreToSafepointRegisterSlot(tmp1, result); |
| 3591 | } |
| 3592 | |
| 3593 | __ bind(&done); |
| 3594 | } |
| 3595 | |
| 3596 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3597 | void LCodeGen::EmitIntegerMathAbs(LMathAbs* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3598 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3599 | Register result = ToRegister(instr->result()); |
| 3600 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| 3601 | Label done; |
| 3602 | __ Branch(USE_DELAY_SLOT, &done, ge, input, Operand(zero_reg)); |
| 3603 | __ mov(result, input); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 3604 | __ subu(result, zero_reg, input); |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3605 | // Overflow if result is still negative, i.e. 0x80000000. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3606 | DeoptimizeIf(lt, instr->environment(), result, Operand(zero_reg)); |
| 3607 | __ bind(&done); |
| 3608 | } |
| 3609 | |
| 3610 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3611 | void LCodeGen::DoMathAbs(LMathAbs* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3612 | // Class for deferred case. |
| 3613 | class DeferredMathAbsTaggedHeapNumber: public LDeferredCode { |
| 3614 | public: |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3615 | DeferredMathAbsTaggedHeapNumber(LCodeGen* codegen, LMathAbs* instr) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3616 | : LDeferredCode(codegen), instr_(instr) { } |
| 3617 | virtual void Generate() { |
| 3618 | codegen()->DoDeferredMathAbsTaggedHeapNumber(instr_); |
| 3619 | } |
| 3620 | virtual LInstruction* instr() { return instr_; } |
| 3621 | private: |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3622 | LMathAbs* instr_; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3623 | }; |
| 3624 | |
| 3625 | Representation r = instr->hydrogen()->value()->representation(); |
| 3626 | if (r.IsDouble()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3627 | FPURegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3628 | FPURegister result = ToDoubleRegister(instr->result()); |
| 3629 | __ abs_d(result, input); |
| 3630 | } else if (r.IsInteger32()) { |
| 3631 | EmitIntegerMathAbs(instr); |
| 3632 | } else { |
| 3633 | // Representation is tagged. |
| 3634 | DeferredMathAbsTaggedHeapNumber* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3635 | new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3636 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3637 | // Smi check. |
| 3638 | __ JumpIfNotSmi(input, deferred->entry()); |
| 3639 | // If smi, handle it directly. |
| 3640 | EmitIntegerMathAbs(instr); |
| 3641 | __ bind(deferred->exit()); |
| 3642 | } |
| 3643 | } |
| 3644 | |
| 3645 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3646 | void LCodeGen::DoMathFloor(LMathFloor* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3647 | DoubleRegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3648 | Register result = ToRegister(instr->result()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3649 | Register scratch1 = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3650 | Register except_flag = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3651 | |
| 3652 | __ EmitFPUTruncate(kRoundToMinusInf, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3653 | result, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3654 | input, |
| 3655 | scratch1, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3656 | double_scratch0(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3657 | except_flag); |
| 3658 | |
| 3659 | // Deopt if the operation did not succeed. |
| 3660 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
| 3661 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3662 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3663 | // Test for -0. |
| 3664 | Label done; |
| 3665 | __ Branch(&done, ne, result, Operand(zero_reg)); |
| 3666 | __ mfc1(scratch1, input.high()); |
| 3667 | __ And(scratch1, scratch1, Operand(HeapNumber::kSignMask)); |
| 3668 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(zero_reg)); |
| 3669 | __ bind(&done); |
| 3670 | } |
| 3671 | } |
| 3672 | |
| 3673 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3674 | void LCodeGen::DoMathRound(LMathRound* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3675 | DoubleRegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3676 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3677 | DoubleRegister double_scratch1 = ToDoubleRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3678 | Register scratch = scratch0(); |
| 3679 | Label done, check_sign_on_zero; |
| 3680 | |
| 3681 | // Extract exponent bits. |
| 3682 | __ mfc1(result, input.high()); |
| 3683 | __ Ext(scratch, |
| 3684 | result, |
| 3685 | HeapNumber::kExponentShift, |
| 3686 | HeapNumber::kExponentBits); |
| 3687 | |
| 3688 | // If the number is in ]-0.5, +0.5[, the result is +/- 0. |
| 3689 | Label skip1; |
| 3690 | __ Branch(&skip1, gt, scratch, Operand(HeapNumber::kExponentBias - 2)); |
| 3691 | __ mov(result, zero_reg); |
| 3692 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3693 | __ Branch(&check_sign_on_zero); |
| 3694 | } else { |
| 3695 | __ Branch(&done); |
| 3696 | } |
| 3697 | __ bind(&skip1); |
| 3698 | |
| 3699 | // The following conversion will not work with numbers |
| 3700 | // outside of ]-2^32, 2^32[. |
| 3701 | DeoptimizeIf(ge, instr->environment(), scratch, |
| 3702 | Operand(HeapNumber::kExponentBias + 32)); |
| 3703 | |
| 3704 | // Save the original sign for later comparison. |
| 3705 | __ And(scratch, result, Operand(HeapNumber::kSignMask)); |
| 3706 | |
| 3707 | __ Move(double_scratch0(), 0.5); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3708 | __ add_d(double_scratch0(), input, double_scratch0()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3709 | |
| 3710 | // Check sign of the result: if the sign changed, the input |
| 3711 | // value was in ]0.5, 0[ and the result should be -0. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3712 | __ mfc1(result, double_scratch0().high()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3713 | __ Xor(result, result, Operand(scratch)); |
| 3714 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3715 | // ARM uses 'mi' here, which is 'lt' |
| 3716 | DeoptimizeIf(lt, instr->environment(), result, |
| 3717 | Operand(zero_reg)); |
| 3718 | } else { |
| 3719 | Label skip2; |
| 3720 | // ARM uses 'mi' here, which is 'lt' |
| 3721 | // Negating it results in 'ge' |
| 3722 | __ Branch(&skip2, ge, result, Operand(zero_reg)); |
| 3723 | __ mov(result, zero_reg); |
| 3724 | __ Branch(&done); |
| 3725 | __ bind(&skip2); |
| 3726 | } |
| 3727 | |
| 3728 | Register except_flag = scratch; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3729 | __ EmitFPUTruncate(kRoundToMinusInf, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3730 | result, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3731 | double_scratch0(), |
| 3732 | at, |
| 3733 | double_scratch1, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3734 | except_flag); |
| 3735 | |
| 3736 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
| 3737 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3738 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3739 | // Test for -0. |
| 3740 | __ Branch(&done, ne, result, Operand(zero_reg)); |
| 3741 | __ bind(&check_sign_on_zero); |
| 3742 | __ mfc1(scratch, input.high()); |
| 3743 | __ And(scratch, scratch, Operand(HeapNumber::kSignMask)); |
| 3744 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(zero_reg)); |
| 3745 | } |
| 3746 | __ bind(&done); |
| 3747 | } |
| 3748 | |
| 3749 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3750 | void LCodeGen::DoMathSqrt(LMathSqrt* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3751 | DoubleRegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3752 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 3753 | __ sqrt_d(result, input); |
| 3754 | } |
| 3755 | |
| 3756 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3757 | void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3758 | DoubleRegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3759 | DoubleRegister result = ToDoubleRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3760 | DoubleRegister temp = ToDoubleRegister(instr->temp()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3761 | |
| 3762 | ASSERT(!input.is(result)); |
| 3763 | |
| 3764 | // Note that according to ECMA-262 15.8.2.13: |
| 3765 | // Math.pow(-Infinity, 0.5) == Infinity |
| 3766 | // Math.sqrt(-Infinity) == NaN |
| 3767 | Label done; |
| 3768 | __ Move(temp, -V8_INFINITY); |
| 3769 | __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, temp, input); |
| 3770 | // Set up Infinity in the delay slot. |
| 3771 | // result is overwritten if the branch is not taken. |
| 3772 | __ neg_d(result, temp); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3773 | |
| 3774 | // Add +0 to convert -0 to +0. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3775 | __ add_d(result, input, kDoubleRegZero); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3776 | __ sqrt_d(result, result); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3777 | __ bind(&done); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3778 | } |
| 3779 | |
| 3780 | |
| 3781 | void LCodeGen::DoPower(LPower* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3782 | Representation exponent_type = instr->hydrogen()->right()->representation(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3783 | // Having marked this as a call, we can use any registers. |
| 3784 | // Just make sure that the input/output registers are the expected ones. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3785 | ASSERT(!instr->right()->IsDoubleRegister() || |
| 3786 | ToDoubleRegister(instr->right()).is(f4)); |
| 3787 | ASSERT(!instr->right()->IsRegister() || |
| 3788 | ToRegister(instr->right()).is(a2)); |
| 3789 | ASSERT(ToDoubleRegister(instr->left()).is(f2)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3790 | ASSERT(ToDoubleRegister(instr->result()).is(f0)); |
| 3791 | |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 3792 | if (exponent_type.IsSmi()) { |
| 3793 | MathPowStub stub(MathPowStub::TAGGED); |
| 3794 | __ CallStub(&stub); |
| 3795 | } else if (exponent_type.IsTagged()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3796 | Label no_deopt; |
| 3797 | __ JumpIfSmi(a2, &no_deopt); |
| 3798 | __ lw(t3, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 3799 | DeoptimizeIf(ne, instr->environment(), t3, Operand(at)); |
| 3800 | __ bind(&no_deopt); |
| 3801 | MathPowStub stub(MathPowStub::TAGGED); |
| 3802 | __ CallStub(&stub); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3803 | } else if (exponent_type.IsInteger32()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3804 | MathPowStub stub(MathPowStub::INTEGER); |
| 3805 | __ CallStub(&stub); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3806 | } else { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3807 | ASSERT(exponent_type.IsDouble()); |
| 3808 | MathPowStub stub(MathPowStub::DOUBLE); |
| 3809 | __ CallStub(&stub); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3810 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3811 | } |
| 3812 | |
| 3813 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3814 | void LCodeGen::DoRandom(LRandom* instr) { |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3815 | class DeferredDoRandom: public LDeferredCode { |
| 3816 | public: |
| 3817 | DeferredDoRandom(LCodeGen* codegen, LRandom* instr) |
| 3818 | : LDeferredCode(codegen), instr_(instr) { } |
| 3819 | virtual void Generate() { codegen()->DoDeferredRandom(instr_); } |
| 3820 | virtual LInstruction* instr() { return instr_; } |
| 3821 | private: |
| 3822 | LRandom* instr_; |
| 3823 | }; |
| 3824 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3825 | DeferredDoRandom* deferred = new(zone()) DeferredDoRandom(this, instr); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3826 | // Having marked this instruction as a call we can use any |
| 3827 | // registers. |
| 3828 | ASSERT(ToDoubleRegister(instr->result()).is(f0)); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3829 | ASSERT(ToRegister(instr->global_object()).is(a0)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3830 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3831 | static const int kSeedSize = sizeof(uint32_t); |
| 3832 | STATIC_ASSERT(kPointerSize == kSeedSize); |
| 3833 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3834 | __ lw(a0, FieldMemOperand(a0, GlobalObject::kNativeContextOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3835 | static const int kRandomSeedOffset = |
| 3836 | FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize; |
| 3837 | __ lw(a2, FieldMemOperand(a0, kRandomSeedOffset)); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3838 | // a2: FixedArray of the native context's random seeds |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3839 | |
| 3840 | // Load state[0]. |
| 3841 | __ lw(a1, FieldMemOperand(a2, ByteArray::kHeaderSize)); |
| 3842 | __ Branch(deferred->entry(), eq, a1, Operand(zero_reg)); |
| 3843 | // Load state[1]. |
| 3844 | __ lw(a0, FieldMemOperand(a2, ByteArray::kHeaderSize + kSeedSize)); |
| 3845 | // a1: state[0]. |
| 3846 | // a0: state[1]. |
| 3847 | |
| 3848 | // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16) |
| 3849 | __ And(a3, a1, Operand(0xFFFF)); |
| 3850 | __ li(t0, Operand(18273)); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3851 | __ Mul(a3, a3, t0); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3852 | __ srl(a1, a1, 16); |
| 3853 | __ Addu(a1, a3, a1); |
| 3854 | // Save state[0]. |
| 3855 | __ sw(a1, FieldMemOperand(a2, ByteArray::kHeaderSize)); |
| 3856 | |
| 3857 | // state[1] = 36969 * (state[1] & 0xFFFF) + (state[1] >> 16) |
| 3858 | __ And(a3, a0, Operand(0xFFFF)); |
| 3859 | __ li(t0, Operand(36969)); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3860 | __ Mul(a3, a3, t0); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3861 | __ srl(a0, a0, 16), |
| 3862 | __ Addu(a0, a3, a0); |
| 3863 | // Save state[1]. |
| 3864 | __ sw(a0, FieldMemOperand(a2, ByteArray::kHeaderSize + kSeedSize)); |
| 3865 | |
| 3866 | // Random bit pattern = (state[0] << 14) + (state[1] & 0x3FFFF) |
| 3867 | __ And(a0, a0, Operand(0x3FFFF)); |
| 3868 | __ sll(a1, a1, 14); |
| 3869 | __ Addu(v0, a0, a1); |
| 3870 | |
| 3871 | __ bind(deferred->exit()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3872 | |
| 3873 | // 0x41300000 is the top half of 1.0 x 2^20 as a double. |
| 3874 | __ li(a2, Operand(0x41300000)); |
| 3875 | // Move 0x41300000xxxxxxxx (x = random bits in v0) to FPU. |
| 3876 | __ Move(f12, v0, a2); |
| 3877 | // Move 0x4130000000000000 to FPU. |
| 3878 | __ Move(f14, zero_reg, a2); |
| 3879 | // Subtract to get the result. |
| 3880 | __ sub_d(f0, f12, f14); |
| 3881 | } |
| 3882 | |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 3883 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3884 | void LCodeGen::DoDeferredRandom(LRandom* instr) { |
| 3885 | __ PrepareCallCFunction(1, scratch0()); |
| 3886 | __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); |
| 3887 | // Return value is in v0. |
| 3888 | } |
| 3889 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3890 | |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3891 | void LCodeGen::DoMathExp(LMathExp* instr) { |
| 3892 | DoubleRegister input = ToDoubleRegister(instr->value()); |
| 3893 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 3894 | DoubleRegister double_scratch1 = ToDoubleRegister(instr->double_temp()); |
| 3895 | DoubleRegister double_scratch2 = double_scratch0(); |
| 3896 | Register temp1 = ToRegister(instr->temp1()); |
| 3897 | Register temp2 = ToRegister(instr->temp2()); |
| 3898 | |
| 3899 | MathExpGenerator::EmitMathExp( |
| 3900 | masm(), input, result, double_scratch1, double_scratch2, |
| 3901 | temp1, temp2, scratch0()); |
| 3902 | } |
| 3903 | |
| 3904 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3905 | void LCodeGen::DoMathLog(LMathLog* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3906 | ASSERT(ToDoubleRegister(instr->result()).is(f4)); |
| 3907 | TranscendentalCacheStub stub(TranscendentalCache::LOG, |
| 3908 | TranscendentalCacheStub::UNTAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3909 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3910 | } |
| 3911 | |
| 3912 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3913 | void LCodeGen::DoMathTan(LMathTan* instr) { |
svenpanne@chromium.org | ecb9dd6 | 2011-12-01 08:22:35 +0000 | [diff] [blame] | 3914 | ASSERT(ToDoubleRegister(instr->result()).is(f4)); |
| 3915 | TranscendentalCacheStub stub(TranscendentalCache::TAN, |
| 3916 | TranscendentalCacheStub::UNTAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3917 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
svenpanne@chromium.org | ecb9dd6 | 2011-12-01 08:22:35 +0000 | [diff] [blame] | 3918 | } |
| 3919 | |
| 3920 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3921 | void LCodeGen::DoMathCos(LMathCos* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3922 | ASSERT(ToDoubleRegister(instr->result()).is(f4)); |
| 3923 | TranscendentalCacheStub stub(TranscendentalCache::COS, |
| 3924 | TranscendentalCacheStub::UNTAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3925 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3926 | } |
| 3927 | |
| 3928 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3929 | void LCodeGen::DoMathSin(LMathSin* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3930 | ASSERT(ToDoubleRegister(instr->result()).is(f4)); |
| 3931 | TranscendentalCacheStub stub(TranscendentalCache::SIN, |
| 3932 | TranscendentalCacheStub::UNTAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3933 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3934 | } |
| 3935 | |
| 3936 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3937 | void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) { |
| 3938 | ASSERT(ToRegister(instr->function()).is(a1)); |
| 3939 | ASSERT(instr->HasPointerMap()); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3940 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3941 | Handle<JSFunction> known_function = instr->hydrogen()->known_function(); |
| 3942 | if (known_function.is_null()) { |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3943 | LPointerMap* pointers = instr->pointer_map(); |
| 3944 | RecordPosition(pointers->position()); |
| 3945 | SafepointGenerator generator(this, pointers, Safepoint::kLazyDeopt); |
| 3946 | ParameterCount count(instr->arity()); |
| 3947 | __ InvokeFunction(a1, count, CALL_FUNCTION, generator, CALL_AS_METHOD); |
| 3948 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3949 | } else { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3950 | CallKnownFunction(known_function, |
| 3951 | instr->hydrogen()->formal_parameter_count(), |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3952 | instr->arity(), |
| 3953 | instr, |
| 3954 | CALL_AS_METHOD, |
| 3955 | A1_CONTAINS_TARGET); |
| 3956 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3957 | } |
| 3958 | |
| 3959 | |
| 3960 | void LCodeGen::DoCallKeyed(LCallKeyed* instr) { |
| 3961 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3962 | |
| 3963 | int arity = instr->arity(); |
| 3964 | Handle<Code> ic = |
| 3965 | isolate()->stub_cache()->ComputeKeyedCallInitialize(arity); |
| 3966 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 3967 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3968 | } |
| 3969 | |
| 3970 | |
| 3971 | void LCodeGen::DoCallNamed(LCallNamed* instr) { |
| 3972 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3973 | |
| 3974 | int arity = instr->arity(); |
| 3975 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET; |
| 3976 | Handle<Code> ic = |
| 3977 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
| 3978 | __ li(a2, Operand(instr->name())); |
| 3979 | CallCode(ic, mode, instr); |
| 3980 | // Restore context register. |
| 3981 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3982 | } |
| 3983 | |
| 3984 | |
| 3985 | void LCodeGen::DoCallFunction(LCallFunction* instr) { |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3986 | ASSERT(ToRegister(instr->function()).is(a1)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3987 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3988 | |
| 3989 | int arity = instr->arity(); |
| 3990 | CallFunctionStub stub(arity, NO_CALL_FUNCTION_FLAGS); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3991 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3992 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3993 | } |
| 3994 | |
| 3995 | |
| 3996 | void LCodeGen::DoCallGlobal(LCallGlobal* instr) { |
| 3997 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3998 | |
| 3999 | int arity = instr->arity(); |
| 4000 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET_CONTEXT; |
| 4001 | Handle<Code> ic = |
| 4002 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
| 4003 | __ li(a2, Operand(instr->name())); |
| 4004 | CallCode(ic, mode, instr); |
| 4005 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 4006 | } |
| 4007 | |
| 4008 | |
| 4009 | void LCodeGen::DoCallKnownGlobal(LCallKnownGlobal* instr) { |
| 4010 | ASSERT(ToRegister(instr->result()).is(v0)); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 4011 | CallKnownFunction(instr->hydrogen()->target(), |
| 4012 | instr->hydrogen()->formal_parameter_count(), |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 4013 | instr->arity(), |
| 4014 | instr, |
| 4015 | CALL_AS_FUNCTION, |
| 4016 | A1_UNINITIALIZED); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4017 | } |
| 4018 | |
| 4019 | |
| 4020 | void LCodeGen::DoCallNew(LCallNew* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4021 | ASSERT(ToRegister(instr->constructor()).is(a1)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4022 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 4023 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4024 | __ li(a0, Operand(instr->arity())); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 4025 | // No cell in a2 for construct type feedback in optimized code |
| 4026 | Handle<Object> undefined_value(isolate()->factory()->undefined_value()); |
| 4027 | __ li(a2, Operand(undefined_value)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 4028 | CallConstructStub stub(NO_CALL_FUNCTION_FLAGS); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 4029 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4030 | } |
| 4031 | |
| 4032 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 4033 | void LCodeGen::DoCallNewArray(LCallNewArray* instr) { |
| 4034 | ASSERT(ToRegister(instr->constructor()).is(a1)); |
| 4035 | ASSERT(ToRegister(instr->result()).is(v0)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 4036 | |
| 4037 | __ li(a0, Operand(instr->arity())); |
| 4038 | __ li(a2, Operand(instr->hydrogen()->property_cell())); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 4039 | ElementsKind kind = instr->hydrogen()->elements_kind(); |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 4040 | AllocationSiteOverrideMode override_mode = |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 4041 | (AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE) |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 4042 | ? DISABLE_ALLOCATION_SITES |
| 4043 | : DONT_OVERRIDE; |
| 4044 | ContextCheckMode context_mode = CONTEXT_CHECK_NOT_REQUIRED; |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 4045 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 4046 | if (instr->arity() == 0) { |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 4047 | ArrayNoArgumentConstructorStub stub(kind, context_mode, override_mode); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 4048 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
| 4049 | } else if (instr->arity() == 1) { |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 4050 | Label done; |
| 4051 | if (IsFastPackedElementsKind(kind)) { |
| 4052 | Label packed_case; |
| 4053 | // We might need a change here, |
| 4054 | // look at the first argument. |
| 4055 | __ lw(t1, MemOperand(sp, 0)); |
| 4056 | __ Branch(&packed_case, eq, t1, Operand(zero_reg)); |
| 4057 | |
| 4058 | ElementsKind holey_kind = GetHoleyElementsKind(kind); |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 4059 | ArraySingleArgumentConstructorStub stub(holey_kind, context_mode, |
| 4060 | override_mode); |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 4061 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
| 4062 | __ jmp(&done); |
| 4063 | __ bind(&packed_case); |
| 4064 | } |
| 4065 | |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 4066 | ArraySingleArgumentConstructorStub stub(kind, context_mode, override_mode); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 4067 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 4068 | __ bind(&done); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 4069 | } else { |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 4070 | ArrayNArgumentsConstructorStub stub(kind, context_mode, override_mode); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 4071 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
| 4072 | } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 4073 | } |
| 4074 | |
| 4075 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4076 | void LCodeGen::DoCallRuntime(LCallRuntime* instr) { |
| 4077 | CallRuntime(instr->function(), instr->arity(), instr); |
| 4078 | } |
| 4079 | |
| 4080 | |
jkummerow@chromium.org | 4c54a2a | 2013-03-19 17:51:30 +0000 | [diff] [blame] | 4081 | void LCodeGen::DoInnerAllocatedObject(LInnerAllocatedObject* instr) { |
| 4082 | Register result = ToRegister(instr->result()); |
| 4083 | Register base = ToRegister(instr->base_object()); |
| 4084 | __ Addu(result, base, Operand(instr->offset())); |
| 4085 | } |
| 4086 | |
| 4087 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4088 | void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) { |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 4089 | Representation representation = instr->representation(); |
| 4090 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4091 | Register object = ToRegister(instr->object()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4092 | Register scratch = scratch0(); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4093 | HObjectAccess access = instr->hydrogen()->access(); |
| 4094 | int offset = access.offset(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4095 | |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 4096 | Handle<Map> transition = instr->transition(); |
| 4097 | |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 4098 | if (FLAG_track_heap_object_fields && representation.IsHeapObject()) { |
ulan@chromium.org | 906e2fb | 2013-05-14 08:14:38 +0000 | [diff] [blame] | 4099 | Register value = ToRegister(instr->value()); |
| 4100 | if (!instr->hydrogen()->value()->type().IsHeapObject()) { |
| 4101 | __ And(scratch, value, Operand(kSmiTagMask)); |
| 4102 | DeoptimizeIf(eq, instr->environment(), scratch, Operand(zero_reg)); |
| 4103 | } |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 4104 | } else if (FLAG_track_double_fields && representation.IsDouble()) { |
| 4105 | ASSERT(transition.is_null()); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4106 | ASSERT(access.IsInobject()); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 4107 | ASSERT(!instr->hydrogen()->NeedsWriteBarrier()); |
| 4108 | DoubleRegister value = ToDoubleRegister(instr->value()); |
| 4109 | __ sdc1(value, FieldMemOperand(object, offset)); |
| 4110 | return; |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 4111 | } |
| 4112 | |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 4113 | if (!transition.is_null()) { |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 4114 | __ li(scratch, Operand(transition)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4115 | __ sw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 4116 | if (instr->hydrogen()->NeedsWriteBarrierForMap()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4117 | Register temp = ToRegister(instr->temp()); |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 4118 | // Update the write barrier for the map field. |
| 4119 | __ RecordWriteField(object, |
| 4120 | HeapObject::kMapOffset, |
| 4121 | scratch, |
| 4122 | temp, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 4123 | GetRAState(), |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 4124 | kSaveFPRegs, |
| 4125 | OMIT_REMEMBERED_SET, |
| 4126 | OMIT_SMI_CHECK); |
| 4127 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4128 | } |
| 4129 | |
| 4130 | // Do the store. |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 4131 | Register value = ToRegister(instr->value()); |
| 4132 | ASSERT(!object.is(value)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4133 | SmiCheck check_needed = |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 4134 | instr->hydrogen()->value()->IsHeapObject() |
| 4135 | ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4136 | if (access.IsInobject()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4137 | __ sw(value, FieldMemOperand(object, offset)); |
| 4138 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 4139 | // Update the write barrier for the object for in-object properties. |
| 4140 | __ RecordWriteField(object, |
| 4141 | offset, |
| 4142 | value, |
| 4143 | scratch, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 4144 | GetRAState(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4145 | kSaveFPRegs, |
| 4146 | EMIT_REMEMBERED_SET, |
| 4147 | check_needed); |
| 4148 | } |
| 4149 | } else { |
| 4150 | __ lw(scratch, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
| 4151 | __ sw(value, FieldMemOperand(scratch, offset)); |
| 4152 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 4153 | // Update the write barrier for the properties array. |
| 4154 | // object is used as a scratch register. |
| 4155 | __ RecordWriteField(scratch, |
| 4156 | offset, |
| 4157 | value, |
| 4158 | object, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 4159 | GetRAState(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4160 | kSaveFPRegs, |
| 4161 | EMIT_REMEMBERED_SET, |
| 4162 | check_needed); |
| 4163 | } |
| 4164 | } |
| 4165 | } |
| 4166 | |
| 4167 | |
| 4168 | void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) { |
| 4169 | ASSERT(ToRegister(instr->object()).is(a1)); |
| 4170 | ASSERT(ToRegister(instr->value()).is(a0)); |
| 4171 | |
| 4172 | // Name is always in a2. |
| 4173 | __ li(a2, Operand(instr->name())); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4174 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4175 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 4176 | : isolate()->builtins()->StoreIC_Initialize(); |
| 4177 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 4178 | } |
| 4179 | |
| 4180 | |
| 4181 | void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4182 | if (instr->hydrogen()->skip_check()) return; |
| 4183 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 4184 | if (instr->index()->IsConstantOperand()) { |
| 4185 | int constant_index = |
| 4186 | ToInteger32(LConstantOperand::cast(instr->index())); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4187 | if (instr->hydrogen()->length()->representation().IsSmi()) { |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 4188 | __ li(at, Operand(Smi::FromInt(constant_index))); |
| 4189 | } else { |
| 4190 | __ li(at, Operand(constant_index)); |
| 4191 | } |
| 4192 | DeoptimizeIf(hs, |
| 4193 | instr->environment(), |
| 4194 | at, |
| 4195 | Operand(ToRegister(instr->length()))); |
| 4196 | } else { |
| 4197 | DeoptimizeIf(hs, |
| 4198 | instr->environment(), |
| 4199 | ToRegister(instr->index()), |
| 4200 | Operand(ToRegister(instr->length()))); |
| 4201 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4202 | } |
| 4203 | |
| 4204 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4205 | void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) { |
| 4206 | Register external_pointer = ToRegister(instr->elements()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4207 | Register key = no_reg; |
| 4208 | ElementsKind elements_kind = instr->elements_kind(); |
| 4209 | bool key_is_constant = instr->key()->IsConstantOperand(); |
| 4210 | int constant_key = 0; |
| 4211 | if (key_is_constant) { |
| 4212 | constant_key = ToInteger32(LConstantOperand::cast(instr->key())); |
| 4213 | if (constant_key & 0xF0000000) { |
| 4214 | Abort("array index constant value too big."); |
| 4215 | } |
| 4216 | } else { |
| 4217 | key = ToRegister(instr->key()); |
| 4218 | } |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 4219 | int element_size_shift = ElementsKindToShiftSize(elements_kind); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4220 | int shift_size = (instr->hydrogen()->key()->representation().IsSmi()) |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 4221 | ? (element_size_shift - kSmiTagSize) : element_size_shift; |
| 4222 | int additional_offset = instr->additional_index() << element_size_shift; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4223 | |
| 4224 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS || |
| 4225 | elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
| 4226 | FPURegister value(ToDoubleRegister(instr->value())); |
| 4227 | if (key_is_constant) { |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 4228 | __ Addu(scratch0(), external_pointer, constant_key << |
| 4229 | element_size_shift); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4230 | } else { |
| 4231 | __ sll(scratch0(), key, shift_size); |
| 4232 | __ Addu(scratch0(), scratch0(), external_pointer); |
| 4233 | } |
| 4234 | |
| 4235 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
| 4236 | __ cvt_s_d(double_scratch0(), value); |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 4237 | __ swc1(double_scratch0(), MemOperand(scratch0(), additional_offset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4238 | } else { // i.e. elements_kind == EXTERNAL_DOUBLE_ELEMENTS |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 4239 | __ sdc1(value, MemOperand(scratch0(), additional_offset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4240 | } |
| 4241 | } else { |
| 4242 | Register value(ToRegister(instr->value())); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 4243 | MemOperand mem_operand = PrepareKeyedOperand( |
| 4244 | key, external_pointer, key_is_constant, constant_key, |
| 4245 | element_size_shift, shift_size, |
| 4246 | instr->additional_index(), additional_offset); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4247 | switch (elements_kind) { |
| 4248 | case EXTERNAL_PIXEL_ELEMENTS: |
| 4249 | case EXTERNAL_BYTE_ELEMENTS: |
| 4250 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 4251 | __ sb(value, mem_operand); |
| 4252 | break; |
| 4253 | case EXTERNAL_SHORT_ELEMENTS: |
| 4254 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
| 4255 | __ sh(value, mem_operand); |
| 4256 | break; |
| 4257 | case EXTERNAL_INT_ELEMENTS: |
| 4258 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
| 4259 | __ sw(value, mem_operand); |
| 4260 | break; |
| 4261 | case EXTERNAL_FLOAT_ELEMENTS: |
| 4262 | case EXTERNAL_DOUBLE_ELEMENTS: |
| 4263 | case FAST_DOUBLE_ELEMENTS: |
| 4264 | case FAST_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4265 | case FAST_SMI_ELEMENTS: |
| 4266 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
| 4267 | case FAST_HOLEY_ELEMENTS: |
| 4268 | case FAST_HOLEY_SMI_ELEMENTS: |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4269 | case DICTIONARY_ELEMENTS: |
| 4270 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
| 4271 | UNREACHABLE(); |
| 4272 | break; |
| 4273 | } |
| 4274 | } |
| 4275 | } |
| 4276 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4277 | |
| 4278 | void LCodeGen::DoStoreKeyedFixedDoubleArray(LStoreKeyed* instr) { |
| 4279 | DoubleRegister value = ToDoubleRegister(instr->value()); |
| 4280 | Register elements = ToRegister(instr->elements()); |
| 4281 | Register key = no_reg; |
| 4282 | Register scratch = scratch0(); |
| 4283 | bool key_is_constant = instr->key()->IsConstantOperand(); |
| 4284 | int constant_key = 0; |
| 4285 | Label not_nan; |
| 4286 | |
| 4287 | // Calculate the effective address of the slot in the array to store the |
| 4288 | // double value. |
| 4289 | if (key_is_constant) { |
| 4290 | constant_key = ToInteger32(LConstantOperand::cast(instr->key())); |
| 4291 | if (constant_key & 0xF0000000) { |
| 4292 | Abort("array index constant value too big."); |
| 4293 | } |
| 4294 | } else { |
| 4295 | key = ToRegister(instr->key()); |
| 4296 | } |
| 4297 | int element_size_shift = ElementsKindToShiftSize(FAST_DOUBLE_ELEMENTS); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4298 | int shift_size = (instr->hydrogen()->key()->representation().IsSmi()) |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4299 | ? (element_size_shift - kSmiTagSize) : element_size_shift; |
| 4300 | if (key_is_constant) { |
| 4301 | __ Addu(scratch, elements, Operand((constant_key << element_size_shift) + |
| 4302 | FixedDoubleArray::kHeaderSize - kHeapObjectTag)); |
| 4303 | } else { |
| 4304 | __ sll(scratch, key, shift_size); |
| 4305 | __ Addu(scratch, elements, Operand(scratch)); |
| 4306 | __ Addu(scratch, scratch, |
| 4307 | Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag)); |
| 4308 | } |
| 4309 | |
| 4310 | if (instr->NeedsCanonicalization()) { |
| 4311 | Label is_nan; |
| 4312 | // Check for NaN. All NaNs must be canonicalized. |
| 4313 | __ BranchF(NULL, &is_nan, eq, value, value); |
| 4314 | __ Branch(¬_nan); |
| 4315 | |
| 4316 | // Only load canonical NaN if the comparison above set the overflow. |
| 4317 | __ bind(&is_nan); |
| 4318 | __ Move(value, FixedDoubleArray::canonical_not_the_hole_nan_as_double()); |
| 4319 | } |
| 4320 | |
| 4321 | __ bind(¬_nan); |
| 4322 | __ sdc1(value, MemOperand(scratch, instr->additional_index() << |
| 4323 | element_size_shift)); |
| 4324 | } |
| 4325 | |
| 4326 | |
| 4327 | void LCodeGen::DoStoreKeyedFixedArray(LStoreKeyed* instr) { |
| 4328 | Register value = ToRegister(instr->value()); |
| 4329 | Register elements = ToRegister(instr->elements()); |
| 4330 | Register key = instr->key()->IsRegister() ? ToRegister(instr->key()) |
| 4331 | : no_reg; |
| 4332 | Register scratch = scratch0(); |
| 4333 | Register store_base = scratch; |
| 4334 | int offset = 0; |
| 4335 | |
| 4336 | // Do the store. |
| 4337 | if (instr->key()->IsConstantOperand()) { |
| 4338 | ASSERT(!instr->hydrogen()->NeedsWriteBarrier()); |
| 4339 | LConstantOperand* const_operand = LConstantOperand::cast(instr->key()); |
| 4340 | offset = FixedArray::OffsetOfElementAt(ToInteger32(const_operand) + |
| 4341 | instr->additional_index()); |
| 4342 | store_base = elements; |
| 4343 | } else { |
| 4344 | // Even though the HLoadKeyed instruction forces the input |
| 4345 | // representation for the key to be an integer, the input gets replaced |
| 4346 | // during bound check elimination with the index argument to the bounds |
| 4347 | // check, which can be tagged, so that case must be handled here, too. |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4348 | if (instr->hydrogen()->key()->representation().IsSmi()) { |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4349 | __ sll(scratch, key, kPointerSizeLog2 - kSmiTagSize); |
| 4350 | __ addu(scratch, elements, scratch); |
| 4351 | } else { |
| 4352 | __ sll(scratch, key, kPointerSizeLog2); |
| 4353 | __ addu(scratch, elements, scratch); |
| 4354 | } |
| 4355 | offset = FixedArray::OffsetOfElementAt(instr->additional_index()); |
| 4356 | } |
| 4357 | __ sw(value, FieldMemOperand(store_base, offset)); |
| 4358 | |
| 4359 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4360 | SmiCheck check_needed = |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 4361 | instr->hydrogen()->value()->IsHeapObject() |
| 4362 | ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4363 | // Compute address of modified element and store it into key register. |
| 4364 | __ Addu(key, store_base, Operand(offset - kHeapObjectTag)); |
| 4365 | __ RecordWrite(elements, |
| 4366 | key, |
| 4367 | value, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 4368 | GetRAState(), |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4369 | kSaveFPRegs, |
| 4370 | EMIT_REMEMBERED_SET, |
| 4371 | check_needed); |
| 4372 | } |
| 4373 | } |
| 4374 | |
| 4375 | |
| 4376 | void LCodeGen::DoStoreKeyed(LStoreKeyed* instr) { |
| 4377 | // By cases: external, fast double |
| 4378 | if (instr->is_external()) { |
| 4379 | DoStoreKeyedExternalArray(instr); |
| 4380 | } else if (instr->hydrogen()->value()->representation().IsDouble()) { |
| 4381 | DoStoreKeyedFixedDoubleArray(instr); |
| 4382 | } else { |
| 4383 | DoStoreKeyedFixedArray(instr); |
| 4384 | } |
| 4385 | } |
| 4386 | |
| 4387 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4388 | void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) { |
| 4389 | ASSERT(ToRegister(instr->object()).is(a2)); |
| 4390 | ASSERT(ToRegister(instr->key()).is(a1)); |
| 4391 | ASSERT(ToRegister(instr->value()).is(a0)); |
| 4392 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4393 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4394 | ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict() |
| 4395 | : isolate()->builtins()->KeyedStoreIC_Initialize(); |
| 4396 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 4397 | } |
| 4398 | |
| 4399 | |
| 4400 | void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) { |
| 4401 | Register object_reg = ToRegister(instr->object()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4402 | Register scratch = scratch0(); |
| 4403 | |
| 4404 | Handle<Map> from_map = instr->original_map(); |
| 4405 | Handle<Map> to_map = instr->transitioned_map(); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 4406 | ElementsKind from_kind = instr->from_kind(); |
| 4407 | ElementsKind to_kind = instr->to_kind(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4408 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4409 | Label not_applicable; |
| 4410 | __ lw(scratch, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
| 4411 | __ Branch(¬_applicable, ne, scratch, Operand(from_map)); |
| 4412 | |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 4413 | if (IsSimpleMapChangeTransition(from_kind, to_kind)) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4414 | Register new_map_reg = ToRegister(instr->new_map_temp()); |
| 4415 | __ li(new_map_reg, Operand(to_map)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4416 | __ sw(new_map_reg, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
| 4417 | // Write barrier. |
| 4418 | __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 4419 | scratch, GetRAState(), kDontSaveFPRegs); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4420 | } else if (FLAG_compiled_transitions) { |
| 4421 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4422 | __ mov(a0, object_reg); |
| 4423 | __ li(a1, Operand(to_map)); |
| 4424 | TransitionElementsKindStub stub(from_kind, to_kind); |
| 4425 | __ CallStub(&stub); |
| 4426 | RecordSafepointWithRegisters( |
| 4427 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4428 | } else if (IsFastSmiElementsKind(from_kind) && |
| 4429 | IsFastDoubleElementsKind(to_kind)) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4430 | Register fixed_object_reg = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4431 | ASSERT(fixed_object_reg.is(a2)); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4432 | Register new_map_reg = ToRegister(instr->new_map_temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4433 | ASSERT(new_map_reg.is(a3)); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4434 | __ li(new_map_reg, Operand(to_map)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4435 | __ mov(fixed_object_reg, object_reg); |
| 4436 | CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(), |
| 4437 | RelocInfo::CODE_TARGET, instr); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4438 | } else if (IsFastDoubleElementsKind(from_kind) && |
| 4439 | IsFastObjectElementsKind(to_kind)) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4440 | Register fixed_object_reg = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4441 | ASSERT(fixed_object_reg.is(a2)); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4442 | Register new_map_reg = ToRegister(instr->new_map_temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4443 | ASSERT(new_map_reg.is(a3)); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4444 | __ li(new_map_reg, Operand(to_map)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4445 | __ mov(fixed_object_reg, object_reg); |
| 4446 | CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(), |
| 4447 | RelocInfo::CODE_TARGET, instr); |
| 4448 | } else { |
| 4449 | UNREACHABLE(); |
| 4450 | } |
| 4451 | __ bind(¬_applicable); |
| 4452 | } |
| 4453 | |
| 4454 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4455 | void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) { |
| 4456 | Register object = ToRegister(instr->object()); |
| 4457 | Register temp = ToRegister(instr->temp()); |
| 4458 | Label fail; |
| 4459 | __ TestJSArrayForAllocationSiteInfo(object, temp, ne, &fail); |
| 4460 | DeoptimizeIf(al, instr->environment()); |
| 4461 | __ bind(&fail); |
| 4462 | } |
| 4463 | |
| 4464 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4465 | void LCodeGen::DoStringAdd(LStringAdd* instr) { |
| 4466 | __ push(ToRegister(instr->left())); |
| 4467 | __ push(ToRegister(instr->right())); |
| 4468 | StringAddStub stub(NO_STRING_CHECK_IN_STUB); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 4469 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4470 | } |
| 4471 | |
| 4472 | |
| 4473 | void LCodeGen::DoStringCharCodeAt(LStringCharCodeAt* instr) { |
| 4474 | class DeferredStringCharCodeAt: public LDeferredCode { |
| 4475 | public: |
| 4476 | DeferredStringCharCodeAt(LCodeGen* codegen, LStringCharCodeAt* instr) |
| 4477 | : LDeferredCode(codegen), instr_(instr) { } |
| 4478 | virtual void Generate() { codegen()->DoDeferredStringCharCodeAt(instr_); } |
| 4479 | virtual LInstruction* instr() { return instr_; } |
| 4480 | private: |
| 4481 | LStringCharCodeAt* instr_; |
| 4482 | }; |
| 4483 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4484 | DeferredStringCharCodeAt* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4485 | new(zone()) DeferredStringCharCodeAt(this, instr); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4486 | StringCharLoadGenerator::Generate(masm(), |
| 4487 | ToRegister(instr->string()), |
| 4488 | ToRegister(instr->index()), |
| 4489 | ToRegister(instr->result()), |
| 4490 | deferred->entry()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4491 | __ bind(deferred->exit()); |
| 4492 | } |
| 4493 | |
| 4494 | |
| 4495 | void LCodeGen::DoDeferredStringCharCodeAt(LStringCharCodeAt* instr) { |
| 4496 | Register string = ToRegister(instr->string()); |
| 4497 | Register result = ToRegister(instr->result()); |
| 4498 | Register scratch = scratch0(); |
| 4499 | |
| 4500 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4501 | // result register contain a valid pointer because it is already |
| 4502 | // contained in the register pointer map. |
| 4503 | __ mov(result, zero_reg); |
| 4504 | |
| 4505 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4506 | __ push(string); |
| 4507 | // Push the index as a smi. This is safe because of the checks in |
| 4508 | // DoStringCharCodeAt above. |
| 4509 | if (instr->index()->IsConstantOperand()) { |
| 4510 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 4511 | __ Addu(scratch, zero_reg, Operand(Smi::FromInt(const_index))); |
| 4512 | __ push(scratch); |
| 4513 | } else { |
| 4514 | Register index = ToRegister(instr->index()); |
| 4515 | __ SmiTag(index); |
| 4516 | __ push(index); |
| 4517 | } |
| 4518 | CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2, instr); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4519 | __ AssertSmi(v0); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4520 | __ SmiUntag(v0); |
| 4521 | __ StoreToSafepointRegisterSlot(v0, result); |
| 4522 | } |
| 4523 | |
| 4524 | |
| 4525 | void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { |
| 4526 | class DeferredStringCharFromCode: public LDeferredCode { |
| 4527 | public: |
| 4528 | DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr) |
| 4529 | : LDeferredCode(codegen), instr_(instr) { } |
| 4530 | virtual void Generate() { codegen()->DoDeferredStringCharFromCode(instr_); } |
| 4531 | virtual LInstruction* instr() { return instr_; } |
| 4532 | private: |
| 4533 | LStringCharFromCode* instr_; |
| 4534 | }; |
| 4535 | |
| 4536 | DeferredStringCharFromCode* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4537 | new(zone()) DeferredStringCharFromCode(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4538 | |
| 4539 | ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); |
| 4540 | Register char_code = ToRegister(instr->char_code()); |
| 4541 | Register result = ToRegister(instr->result()); |
| 4542 | Register scratch = scratch0(); |
| 4543 | ASSERT(!char_code.is(result)); |
| 4544 | |
| 4545 | __ Branch(deferred->entry(), hi, |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4546 | char_code, Operand(String::kMaxOneByteCharCode)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4547 | __ LoadRoot(result, Heap::kSingleCharacterStringCacheRootIndex); |
| 4548 | __ sll(scratch, char_code, kPointerSizeLog2); |
| 4549 | __ Addu(result, result, scratch); |
| 4550 | __ lw(result, FieldMemOperand(result, FixedArray::kHeaderSize)); |
| 4551 | __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 4552 | __ Branch(deferred->entry(), eq, result, Operand(scratch)); |
| 4553 | __ bind(deferred->exit()); |
| 4554 | } |
| 4555 | |
| 4556 | |
| 4557 | void LCodeGen::DoDeferredStringCharFromCode(LStringCharFromCode* instr) { |
| 4558 | Register char_code = ToRegister(instr->char_code()); |
| 4559 | Register result = ToRegister(instr->result()); |
| 4560 | |
| 4561 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4562 | // result register contain a valid pointer because it is already |
| 4563 | // contained in the register pointer map. |
| 4564 | __ mov(result, zero_reg); |
| 4565 | |
| 4566 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4567 | __ SmiTag(char_code); |
| 4568 | __ push(char_code); |
| 4569 | CallRuntimeFromDeferred(Runtime::kCharFromCode, 1, instr); |
| 4570 | __ StoreToSafepointRegisterSlot(v0, result); |
| 4571 | } |
| 4572 | |
| 4573 | |
| 4574 | void LCodeGen::DoStringLength(LStringLength* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4575 | Register string = ToRegister(instr->string()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4576 | Register result = ToRegister(instr->result()); |
| 4577 | __ lw(result, FieldMemOperand(string, String::kLengthOffset)); |
| 4578 | } |
| 4579 | |
| 4580 | |
| 4581 | void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4582 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4583 | ASSERT(input->IsRegister() || input->IsStackSlot()); |
| 4584 | LOperand* output = instr->result(); |
| 4585 | ASSERT(output->IsDoubleRegister()); |
| 4586 | FPURegister single_scratch = double_scratch0().low(); |
| 4587 | if (input->IsStackSlot()) { |
| 4588 | Register scratch = scratch0(); |
| 4589 | __ lw(scratch, ToMemOperand(input)); |
| 4590 | __ mtc1(scratch, single_scratch); |
| 4591 | } else { |
| 4592 | __ mtc1(ToRegister(input), single_scratch); |
| 4593 | } |
| 4594 | __ cvt_d_w(ToDoubleRegister(output), single_scratch); |
| 4595 | } |
| 4596 | |
| 4597 | |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 4598 | void LCodeGen::DoInteger32ToSmi(LInteger32ToSmi* instr) { |
| 4599 | LOperand* input = instr->value(); |
| 4600 | ASSERT(input->IsRegister()); |
| 4601 | LOperand* output = instr->result(); |
| 4602 | ASSERT(output->IsRegister()); |
| 4603 | Register scratch = scratch0(); |
| 4604 | |
| 4605 | __ SmiTagCheckOverflow(ToRegister(output), ToRegister(input), scratch); |
| 4606 | if (!instr->hydrogen()->value()->HasRange() || |
| 4607 | !instr->hydrogen()->value()->range()->IsInSmiRange()) { |
| 4608 | DeoptimizeIf(lt, instr->environment(), scratch, Operand(zero_reg)); |
| 4609 | } |
| 4610 | } |
| 4611 | |
| 4612 | |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4613 | void LCodeGen::DoUint32ToDouble(LUint32ToDouble* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4614 | LOperand* input = instr->value(); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4615 | LOperand* output = instr->result(); |
| 4616 | |
| 4617 | FPURegister dbl_scratch = double_scratch0(); |
| 4618 | __ mtc1(ToRegister(input), dbl_scratch); |
| 4619 | __ Cvt_d_uw(ToDoubleRegister(output), dbl_scratch, f22); |
| 4620 | } |
| 4621 | |
| 4622 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4623 | void LCodeGen::DoNumberTagI(LNumberTagI* instr) { |
| 4624 | class DeferredNumberTagI: public LDeferredCode { |
| 4625 | public: |
| 4626 | DeferredNumberTagI(LCodeGen* codegen, LNumberTagI* instr) |
| 4627 | : LDeferredCode(codegen), instr_(instr) { } |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4628 | virtual void Generate() { |
| 4629 | codegen()->DoDeferredNumberTagI(instr_, |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4630 | instr_->value(), |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4631 | SIGNED_INT32); |
| 4632 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4633 | virtual LInstruction* instr() { return instr_; } |
| 4634 | private: |
| 4635 | LNumberTagI* instr_; |
| 4636 | }; |
| 4637 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4638 | Register src = ToRegister(instr->value()); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4639 | Register dst = ToRegister(instr->result()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4640 | Register overflow = scratch0(); |
| 4641 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4642 | DeferredNumberTagI* deferred = new(zone()) DeferredNumberTagI(this, instr); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4643 | __ SmiTagCheckOverflow(dst, src, overflow); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4644 | __ BranchOnOverflow(deferred->entry(), overflow); |
| 4645 | __ bind(deferred->exit()); |
| 4646 | } |
| 4647 | |
| 4648 | |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4649 | void LCodeGen::DoNumberTagU(LNumberTagU* instr) { |
| 4650 | class DeferredNumberTagU: public LDeferredCode { |
| 4651 | public: |
| 4652 | DeferredNumberTagU(LCodeGen* codegen, LNumberTagU* instr) |
| 4653 | : LDeferredCode(codegen), instr_(instr) { } |
| 4654 | virtual void Generate() { |
| 4655 | codegen()->DoDeferredNumberTagI(instr_, |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4656 | instr_->value(), |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4657 | UNSIGNED_INT32); |
| 4658 | } |
| 4659 | virtual LInstruction* instr() { return instr_; } |
| 4660 | private: |
| 4661 | LNumberTagU* instr_; |
| 4662 | }; |
| 4663 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4664 | LOperand* input = instr->value(); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4665 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4666 | Register reg = ToRegister(input); |
| 4667 | |
| 4668 | DeferredNumberTagU* deferred = new(zone()) DeferredNumberTagU(this, instr); |
| 4669 | __ Branch(deferred->entry(), hi, reg, Operand(Smi::kMaxValue)); |
| 4670 | __ SmiTag(reg, reg); |
| 4671 | __ bind(deferred->exit()); |
| 4672 | } |
| 4673 | |
| 4674 | |
| 4675 | void LCodeGen::DoDeferredNumberTagI(LInstruction* instr, |
| 4676 | LOperand* value, |
| 4677 | IntegerSignedness signedness) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4678 | Label slow; |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4679 | Register src = ToRegister(value); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4680 | Register dst = ToRegister(instr->result()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4681 | DoubleRegister dbl_scratch = double_scratch0(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4682 | |
| 4683 | // Preserve the value of all registers. |
| 4684 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4685 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4686 | Label done; |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4687 | if (signedness == SIGNED_INT32) { |
| 4688 | // There was overflow, so bits 30 and 31 of the original integer |
| 4689 | // disagree. Try to allocate a heap number in new space and store |
| 4690 | // the value in there. If that fails, call the runtime system. |
| 4691 | if (dst.is(src)) { |
| 4692 | __ SmiUntag(src, dst); |
| 4693 | __ Xor(src, src, Operand(0x80000000)); |
| 4694 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4695 | __ mtc1(src, dbl_scratch); |
| 4696 | __ cvt_d_w(dbl_scratch, dbl_scratch); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4697 | } else { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4698 | __ mtc1(src, dbl_scratch); |
| 4699 | __ Cvt_d_uw(dbl_scratch, dbl_scratch, f22); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4700 | } |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4701 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4702 | if (FLAG_inline_new) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4703 | __ LoadRoot(scratch0(), Heap::kHeapNumberMapRootIndex); |
| 4704 | __ AllocateHeapNumber(t1, a3, t0, scratch0(), &slow, DONT_TAG_RESULT); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4705 | __ Move(dst, t1); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4706 | __ Branch(&done); |
| 4707 | } |
| 4708 | |
| 4709 | // Slow case: Call the runtime system to do the number allocation. |
| 4710 | __ bind(&slow); |
| 4711 | |
| 4712 | // TODO(3095996): Put a valid pointer value in the stack slot where the result |
| 4713 | // register is stored, as this register is in the pointer map, but contains an |
| 4714 | // integer value. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4715 | __ StoreToSafepointRegisterSlot(zero_reg, dst); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4716 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, instr); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4717 | __ Move(dst, v0); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4718 | __ Subu(dst, dst, kHeapObjectTag); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4719 | |
| 4720 | // Done. Put the value in dbl_scratch into the value of the allocated heap |
| 4721 | // number. |
| 4722 | __ bind(&done); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4723 | __ sdc1(dbl_scratch, MemOperand(dst, HeapNumber::kValueOffset)); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4724 | __ Addu(dst, dst, kHeapObjectTag); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4725 | __ StoreToSafepointRegisterSlot(dst, dst); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4726 | } |
| 4727 | |
| 4728 | |
| 4729 | void LCodeGen::DoNumberTagD(LNumberTagD* instr) { |
| 4730 | class DeferredNumberTagD: public LDeferredCode { |
| 4731 | public: |
| 4732 | DeferredNumberTagD(LCodeGen* codegen, LNumberTagD* instr) |
| 4733 | : LDeferredCode(codegen), instr_(instr) { } |
| 4734 | virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); } |
| 4735 | virtual LInstruction* instr() { return instr_; } |
| 4736 | private: |
| 4737 | LNumberTagD* instr_; |
| 4738 | }; |
| 4739 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4740 | DoubleRegister input_reg = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4741 | Register scratch = scratch0(); |
| 4742 | Register reg = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4743 | Register temp1 = ToRegister(instr->temp()); |
| 4744 | Register temp2 = ToRegister(instr->temp2()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4745 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4746 | bool convert_hole = false; |
| 4747 | HValue* change_input = instr->hydrogen()->value(); |
| 4748 | if (change_input->IsLoadKeyed()) { |
| 4749 | HLoadKeyed* load = HLoadKeyed::cast(change_input); |
| 4750 | convert_hole = load->UsesMustHandleHole(); |
| 4751 | } |
| 4752 | |
| 4753 | Label no_special_nan_handling; |
| 4754 | Label done; |
| 4755 | if (convert_hole) { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4756 | DoubleRegister input_reg = ToDoubleRegister(instr->value()); |
| 4757 | __ BranchF(&no_special_nan_handling, NULL, eq, input_reg, input_reg); |
| 4758 | __ Move(reg, scratch0(), input_reg); |
| 4759 | Label canonicalize; |
| 4760 | __ Branch(&canonicalize, ne, scratch0(), Operand(kHoleNanUpper32)); |
| 4761 | __ li(reg, factory()->the_hole_value()); |
| 4762 | __ Branch(&done); |
| 4763 | __ bind(&canonicalize); |
| 4764 | __ Move(input_reg, |
| 4765 | FixedDoubleArray::canonical_not_the_hole_nan_as_double()); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4766 | } |
| 4767 | |
| 4768 | __ bind(&no_special_nan_handling); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4769 | DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4770 | if (FLAG_inline_new) { |
| 4771 | __ LoadRoot(scratch, Heap::kHeapNumberMapRootIndex); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4772 | // We want the untagged address first for performance |
| 4773 | __ AllocateHeapNumber(reg, temp1, temp2, scratch, deferred->entry(), |
| 4774 | DONT_TAG_RESULT); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4775 | } else { |
| 4776 | __ Branch(deferred->entry()); |
| 4777 | } |
| 4778 | __ bind(deferred->exit()); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4779 | __ sdc1(input_reg, MemOperand(reg, HeapNumber::kValueOffset)); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4780 | // Now that we have finished with the object's real address tag it |
| 4781 | __ Addu(reg, reg, kHeapObjectTag); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4782 | __ bind(&done); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4783 | } |
| 4784 | |
| 4785 | |
| 4786 | void LCodeGen::DoDeferredNumberTagD(LNumberTagD* instr) { |
| 4787 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4788 | // result register contain a valid pointer because it is already |
| 4789 | // contained in the register pointer map. |
| 4790 | Register reg = ToRegister(instr->result()); |
| 4791 | __ mov(reg, zero_reg); |
| 4792 | |
| 4793 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4794 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, instr); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4795 | __ Subu(v0, v0, kHeapObjectTag); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4796 | __ StoreToSafepointRegisterSlot(v0, reg); |
| 4797 | } |
| 4798 | |
| 4799 | |
| 4800 | void LCodeGen::DoSmiTag(LSmiTag* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4801 | ASSERT(!instr->hydrogen_value()->CheckFlag(HValue::kCanOverflow)); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4802 | __ SmiTag(ToRegister(instr->result()), ToRegister(instr->value())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4803 | } |
| 4804 | |
| 4805 | |
| 4806 | void LCodeGen::DoSmiUntag(LSmiUntag* instr) { |
| 4807 | Register scratch = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4808 | Register input = ToRegister(instr->value()); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4809 | Register result = ToRegister(instr->result()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4810 | if (instr->needs_check()) { |
| 4811 | STATIC_ASSERT(kHeapObjectTag == 1); |
| 4812 | // If the input is a HeapObject, value of scratch won't be zero. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4813 | __ And(scratch, input, Operand(kHeapObjectTag)); |
| 4814 | __ SmiUntag(result, input); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4815 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(zero_reg)); |
| 4816 | } else { |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4817 | __ SmiUntag(result, input); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4818 | } |
| 4819 | } |
| 4820 | |
| 4821 | |
| 4822 | void LCodeGen::EmitNumberUntagD(Register input_reg, |
| 4823 | DoubleRegister result_reg, |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 4824 | bool allow_undefined_as_nan, |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 4825 | bool deoptimize_on_minus_zero, |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4826 | LEnvironment* env, |
| 4827 | NumberUntagDMode mode) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4828 | Register scratch = scratch0(); |
| 4829 | |
| 4830 | Label load_smi, heap_number, done; |
| 4831 | |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame] | 4832 | STATIC_ASSERT(NUMBER_CANDIDATE_IS_ANY_TAGGED_CONVERT_HOLE > |
| 4833 | NUMBER_CANDIDATE_IS_ANY_TAGGED); |
| 4834 | if (mode >= NUMBER_CANDIDATE_IS_ANY_TAGGED) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4835 | // Smi check. |
| 4836 | __ UntagAndJumpIfSmi(scratch, input_reg, &load_smi); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4837 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4838 | // Heap number map check. |
| 4839 | __ lw(scratch, FieldMemOperand(input_reg, HeapObject::kMapOffset)); |
| 4840 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 4841 | if (!allow_undefined_as_nan) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4842 | DeoptimizeIf(ne, env, scratch, Operand(at)); |
| 4843 | } else { |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame] | 4844 | Label heap_number, convert; |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4845 | __ Branch(&heap_number, eq, scratch, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4846 | |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame] | 4847 | // Convert undefined (and hole) to NaN. |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4848 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame] | 4849 | if (mode == NUMBER_CANDIDATE_IS_ANY_TAGGED_CONVERT_HOLE) { |
| 4850 | __ Branch(&convert, eq, input_reg, Operand(at)); |
| 4851 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| 4852 | } |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4853 | DeoptimizeIf(ne, env, input_reg, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4854 | |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame] | 4855 | __ bind(&convert); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4856 | __ LoadRoot(at, Heap::kNanValueRootIndex); |
| 4857 | __ ldc1(result_reg, FieldMemOperand(at, HeapNumber::kValueOffset)); |
| 4858 | __ Branch(&done); |
| 4859 | |
| 4860 | __ bind(&heap_number); |
| 4861 | } |
| 4862 | // Heap number to double register conversion. |
| 4863 | __ ldc1(result_reg, FieldMemOperand(input_reg, HeapNumber::kValueOffset)); |
| 4864 | if (deoptimize_on_minus_zero) { |
| 4865 | __ mfc1(at, result_reg.low()); |
| 4866 | __ Branch(&done, ne, at, Operand(zero_reg)); |
| 4867 | __ mfc1(scratch, result_reg.high()); |
| 4868 | DeoptimizeIf(eq, env, scratch, Operand(HeapNumber::kSignMask)); |
| 4869 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4870 | __ Branch(&done); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4871 | } else { |
| 4872 | __ SmiUntag(scratch, input_reg); |
| 4873 | ASSERT(mode == NUMBER_CANDIDATE_IS_SMI); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4874 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4875 | |
| 4876 | // Smi to double register conversion |
| 4877 | __ bind(&load_smi); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4878 | // scratch: untagged value of input_reg |
| 4879 | __ mtc1(scratch, result_reg); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4880 | __ cvt_d_w(result_reg, result_reg); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4881 | __ bind(&done); |
| 4882 | } |
| 4883 | |
| 4884 | |
| 4885 | void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4886 | Register input_reg = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4887 | Register scratch1 = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4888 | Register scratch2 = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4889 | DoubleRegister double_scratch = double_scratch0(); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4890 | DoubleRegister double_scratch2 = ToDoubleRegister(instr->temp3()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4891 | |
| 4892 | ASSERT(!scratch1.is(input_reg) && !scratch1.is(scratch2)); |
| 4893 | ASSERT(!scratch2.is(input_reg) && !scratch2.is(scratch1)); |
| 4894 | |
| 4895 | Label done; |
| 4896 | |
| 4897 | // The input is a tagged HeapObject. |
| 4898 | // Heap number map check. |
| 4899 | __ lw(scratch1, FieldMemOperand(input_reg, HeapObject::kMapOffset)); |
| 4900 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 4901 | // This 'at' value and scratch1 map value are used for tests in both clauses |
| 4902 | // of the if. |
| 4903 | |
| 4904 | if (instr->truncating()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4905 | Register scratch3 = ToRegister(instr->temp2()); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4906 | FPURegister single_scratch = double_scratch.low(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4907 | ASSERT(!scratch3.is(input_reg) && |
| 4908 | !scratch3.is(scratch1) && |
| 4909 | !scratch3.is(scratch2)); |
| 4910 | // Performs a truncating conversion of a floating point number as used by |
| 4911 | // the JS bitwise operations. |
| 4912 | Label heap_number; |
| 4913 | __ Branch(&heap_number, eq, scratch1, Operand(at)); // HeapNumber map? |
| 4914 | // Check for undefined. Undefined is converted to zero for truncating |
| 4915 | // conversions. |
| 4916 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 4917 | DeoptimizeIf(ne, instr->environment(), input_reg, Operand(at)); |
| 4918 | ASSERT(ToRegister(instr->result()).is(input_reg)); |
| 4919 | __ mov(input_reg, zero_reg); |
| 4920 | __ Branch(&done); |
| 4921 | |
| 4922 | __ bind(&heap_number); |
| 4923 | __ ldc1(double_scratch2, |
| 4924 | FieldMemOperand(input_reg, HeapNumber::kValueOffset)); |
| 4925 | __ EmitECMATruncate(input_reg, |
| 4926 | double_scratch2, |
| 4927 | single_scratch, |
| 4928 | scratch1, |
| 4929 | scratch2, |
| 4930 | scratch3); |
| 4931 | } else { |
| 4932 | // Deoptimize if we don't have a heap number. |
| 4933 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(at)); |
| 4934 | |
| 4935 | // Load the double value. |
| 4936 | __ ldc1(double_scratch, |
| 4937 | FieldMemOperand(input_reg, HeapNumber::kValueOffset)); |
| 4938 | |
| 4939 | Register except_flag = scratch2; |
| 4940 | __ EmitFPUTruncate(kRoundToZero, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4941 | input_reg, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4942 | double_scratch, |
| 4943 | scratch1, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4944 | double_scratch2, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4945 | except_flag, |
| 4946 | kCheckForInexactConversion); |
| 4947 | |
| 4948 | // Deopt if the operation did not succeed. |
| 4949 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
| 4950 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4951 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4952 | __ Branch(&done, ne, input_reg, Operand(zero_reg)); |
| 4953 | |
| 4954 | __ mfc1(scratch1, double_scratch.high()); |
| 4955 | __ And(scratch1, scratch1, Operand(HeapNumber::kSignMask)); |
| 4956 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(zero_reg)); |
| 4957 | } |
| 4958 | } |
| 4959 | __ bind(&done); |
| 4960 | } |
| 4961 | |
| 4962 | |
| 4963 | void LCodeGen::DoTaggedToI(LTaggedToI* instr) { |
| 4964 | class DeferredTaggedToI: public LDeferredCode { |
| 4965 | public: |
| 4966 | DeferredTaggedToI(LCodeGen* codegen, LTaggedToI* instr) |
| 4967 | : LDeferredCode(codegen), instr_(instr) { } |
| 4968 | virtual void Generate() { codegen()->DoDeferredTaggedToI(instr_); } |
| 4969 | virtual LInstruction* instr() { return instr_; } |
| 4970 | private: |
| 4971 | LTaggedToI* instr_; |
| 4972 | }; |
| 4973 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4974 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4975 | ASSERT(input->IsRegister()); |
| 4976 | ASSERT(input->Equals(instr->result())); |
| 4977 | |
| 4978 | Register input_reg = ToRegister(input); |
| 4979 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4980 | DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4981 | |
| 4982 | // Let the deferred code handle the HeapObject case. |
| 4983 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
| 4984 | |
| 4985 | // Smi to int32 conversion. |
| 4986 | __ SmiUntag(input_reg); |
| 4987 | __ bind(deferred->exit()); |
| 4988 | } |
| 4989 | |
| 4990 | |
| 4991 | void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4992 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4993 | ASSERT(input->IsRegister()); |
| 4994 | LOperand* result = instr->result(); |
| 4995 | ASSERT(result->IsDoubleRegister()); |
| 4996 | |
| 4997 | Register input_reg = ToRegister(input); |
| 4998 | DoubleRegister result_reg = ToDoubleRegister(result); |
| 4999 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5000 | NumberUntagDMode mode = NUMBER_CANDIDATE_IS_ANY_TAGGED; |
| 5001 | HValue* value = instr->hydrogen()->value(); |
| 5002 | if (value->type().IsSmi()) { |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame] | 5003 | mode = NUMBER_CANDIDATE_IS_SMI; |
| 5004 | } else if (value->IsLoadKeyed()) { |
| 5005 | HLoadKeyed* load = HLoadKeyed::cast(value); |
| 5006 | if (load->UsesMustHandleHole()) { |
| 5007 | if (load->hole_mode() == ALLOW_RETURN_HOLE) { |
| 5008 | mode = NUMBER_CANDIDATE_IS_ANY_TAGGED_CONVERT_HOLE; |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5009 | } |
| 5010 | } |
| 5011 | } |
| 5012 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5013 | EmitNumberUntagD(input_reg, result_reg, |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 5014 | instr->hydrogen()->allow_undefined_as_nan(), |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 5015 | instr->hydrogen()->deoptimize_on_minus_zero(), |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5016 | instr->environment(), |
| 5017 | mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5018 | } |
| 5019 | |
| 5020 | |
| 5021 | void LCodeGen::DoDoubleToI(LDoubleToI* instr) { |
| 5022 | Register result_reg = ToRegister(instr->result()); |
| 5023 | Register scratch1 = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5024 | Register scratch2 = ToRegister(instr->temp()); |
| 5025 | DoubleRegister double_input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5026 | |
| 5027 | if (instr->truncating()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5028 | Register scratch3 = ToRegister(instr->temp2()); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 5029 | FPURegister single_scratch = double_scratch0().low(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5030 | __ EmitECMATruncate(result_reg, |
| 5031 | double_input, |
| 5032 | single_scratch, |
| 5033 | scratch1, |
| 5034 | scratch2, |
| 5035 | scratch3); |
| 5036 | } else { |
| 5037 | Register except_flag = scratch2; |
| 5038 | |
| 5039 | __ EmitFPUTruncate(kRoundToMinusInf, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 5040 | result_reg, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5041 | double_input, |
| 5042 | scratch1, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 5043 | double_scratch0(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5044 | except_flag, |
| 5045 | kCheckForInexactConversion); |
| 5046 | |
| 5047 | // Deopt if the operation did not succeed (except_flag != 0). |
| 5048 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5049 | |
| 5050 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 5051 | Label done; |
| 5052 | __ Branch(&done, ne, result_reg, Operand(zero_reg)); |
| 5053 | __ mfc1(scratch1, double_input.high()); |
| 5054 | __ And(scratch1, scratch1, Operand(HeapNumber::kSignMask)); |
| 5055 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(zero_reg)); |
| 5056 | __ bind(&done); |
| 5057 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5058 | } |
| 5059 | } |
| 5060 | |
| 5061 | |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5062 | void LCodeGen::DoDoubleToSmi(LDoubleToSmi* instr) { |
| 5063 | Register result_reg = ToRegister(instr->result()); |
| 5064 | Register scratch1 = scratch0(); |
| 5065 | Register scratch2 = ToRegister(instr->temp()); |
| 5066 | DoubleRegister double_input = ToDoubleRegister(instr->value()); |
| 5067 | |
| 5068 | if (instr->truncating()) { |
| 5069 | Register scratch3 = ToRegister(instr->temp2()); |
| 5070 | FPURegister single_scratch = double_scratch0().low(); |
| 5071 | __ EmitECMATruncate(result_reg, |
| 5072 | double_input, |
| 5073 | single_scratch, |
| 5074 | scratch1, |
| 5075 | scratch2, |
| 5076 | scratch3); |
| 5077 | } else { |
| 5078 | Register except_flag = scratch2; |
| 5079 | |
| 5080 | __ EmitFPUTruncate(kRoundToMinusInf, |
| 5081 | result_reg, |
| 5082 | double_input, |
| 5083 | scratch1, |
| 5084 | double_scratch0(), |
| 5085 | except_flag, |
| 5086 | kCheckForInexactConversion); |
| 5087 | |
| 5088 | // Deopt if the operation did not succeed (except_flag != 0). |
| 5089 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
| 5090 | |
| 5091 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 5092 | Label done; |
| 5093 | __ Branch(&done, ne, result_reg, Operand(zero_reg)); |
| 5094 | __ mfc1(scratch1, double_input.high()); |
| 5095 | __ And(scratch1, scratch1, Operand(HeapNumber::kSignMask)); |
| 5096 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(zero_reg)); |
| 5097 | __ bind(&done); |
| 5098 | } |
| 5099 | } |
| 5100 | __ SmiTagCheckOverflow(result_reg, result_reg, scratch1); |
| 5101 | DeoptimizeIf(lt, instr->environment(), scratch1, Operand(zero_reg)); |
| 5102 | } |
| 5103 | |
| 5104 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5105 | void LCodeGen::DoCheckSmi(LCheckSmi* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5106 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5107 | __ And(at, ToRegister(input), Operand(kSmiTagMask)); |
| 5108 | DeoptimizeIf(ne, instr->environment(), at, Operand(zero_reg)); |
| 5109 | } |
| 5110 | |
| 5111 | |
| 5112 | void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5113 | if (!instr->hydrogen()->value()->IsHeapObject()) { |
| 5114 | LOperand* input = instr->value(); |
| 5115 | __ And(at, ToRegister(input), Operand(kSmiTagMask)); |
| 5116 | DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg)); |
| 5117 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5118 | } |
| 5119 | |
| 5120 | |
| 5121 | void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5122 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5123 | Register scratch = scratch0(); |
| 5124 | |
| 5125 | __ GetObjectType(input, scratch, scratch); |
| 5126 | |
| 5127 | if (instr->hydrogen()->is_interval_check()) { |
| 5128 | InstanceType first; |
| 5129 | InstanceType last; |
| 5130 | instr->hydrogen()->GetCheckInterval(&first, &last); |
| 5131 | |
| 5132 | // If there is only one type in the interval check for equality. |
| 5133 | if (first == last) { |
| 5134 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(first)); |
| 5135 | } else { |
| 5136 | DeoptimizeIf(lo, instr->environment(), scratch, Operand(first)); |
| 5137 | // Omit check for the last type. |
| 5138 | if (last != LAST_TYPE) { |
| 5139 | DeoptimizeIf(hi, instr->environment(), scratch, Operand(last)); |
| 5140 | } |
| 5141 | } |
| 5142 | } else { |
| 5143 | uint8_t mask; |
| 5144 | uint8_t tag; |
| 5145 | instr->hydrogen()->GetCheckMaskAndTag(&mask, &tag); |
| 5146 | |
| 5147 | if (IsPowerOf2(mask)) { |
| 5148 | ASSERT(tag == 0 || IsPowerOf2(tag)); |
| 5149 | __ And(at, scratch, mask); |
| 5150 | DeoptimizeIf(tag == 0 ? ne : eq, instr->environment(), |
| 5151 | at, Operand(zero_reg)); |
| 5152 | } else { |
| 5153 | __ And(scratch, scratch, Operand(mask)); |
| 5154 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(tag)); |
| 5155 | } |
| 5156 | } |
| 5157 | } |
| 5158 | |
| 5159 | |
| 5160 | void LCodeGen::DoCheckFunction(LCheckFunction* instr) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5161 | Register reg = ToRegister(instr->value()); |
| 5162 | Handle<JSFunction> target = instr->hydrogen()->target(); |
rossberg@chromium.org | 79e7902 | 2013-06-03 15:43:46 +0000 | [diff] [blame] | 5163 | AllowDeferredHandleDereference smi_check; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5164 | if (isolate()->heap()->InNewSpace(*target)) { |
| 5165 | Register reg = ToRegister(instr->value()); |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 5166 | Handle<Cell> cell = isolate()->factory()->NewPropertyCell(target); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5167 | __ li(at, Operand(Handle<Object>(cell))); |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 5168 | __ lw(at, FieldMemOperand(at, Cell::kValueOffset)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5169 | DeoptimizeIf(ne, instr->environment(), reg, |
| 5170 | Operand(at)); |
| 5171 | } else { |
| 5172 | DeoptimizeIf(ne, instr->environment(), reg, |
| 5173 | Operand(target)); |
| 5174 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5175 | } |
| 5176 | |
| 5177 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5178 | void LCodeGen::DoCheckMapCommon(Register map_reg, |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 5179 | Handle<Map> map, |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 5180 | LEnvironment* env) { |
| 5181 | Label success; |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5182 | __ CompareMapAndBranch(map_reg, map, &success, eq, &success); |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 5183 | DeoptimizeIf(al, env); |
| 5184 | __ bind(&success); |
| 5185 | } |
| 5186 | |
| 5187 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5188 | void LCodeGen::DoCheckMaps(LCheckMaps* instr) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5189 | Register map_reg = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5190 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5191 | ASSERT(input->IsRegister()); |
| 5192 | Register reg = ToRegister(input); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5193 | Label success; |
| 5194 | SmallMapList* map_set = instr->hydrogen()->map_set(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5195 | __ lw(map_reg, FieldMemOperand(reg, HeapObject::kMapOffset)); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5196 | for (int i = 0; i < map_set->length() - 1; i++) { |
| 5197 | Handle<Map> map = map_set->at(i); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5198 | __ CompareMapAndBranch(map_reg, map, &success, eq, &success); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5199 | } |
| 5200 | Handle<Map> map = map_set->last(); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5201 | DoCheckMapCommon(map_reg, map, instr->environment()); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5202 | __ bind(&success); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5203 | } |
| 5204 | |
| 5205 | |
| 5206 | void LCodeGen::DoClampDToUint8(LClampDToUint8* instr) { |
| 5207 | DoubleRegister value_reg = ToDoubleRegister(instr->unclamped()); |
| 5208 | Register result_reg = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5209 | DoubleRegister temp_reg = ToDoubleRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5210 | __ ClampDoubleToUint8(result_reg, value_reg, temp_reg); |
| 5211 | } |
| 5212 | |
| 5213 | |
| 5214 | void LCodeGen::DoClampIToUint8(LClampIToUint8* instr) { |
| 5215 | Register unclamped_reg = ToRegister(instr->unclamped()); |
| 5216 | Register result_reg = ToRegister(instr->result()); |
| 5217 | __ ClampUint8(result_reg, unclamped_reg); |
| 5218 | } |
| 5219 | |
| 5220 | |
| 5221 | void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) { |
| 5222 | Register scratch = scratch0(); |
| 5223 | Register input_reg = ToRegister(instr->unclamped()); |
| 5224 | Register result_reg = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5225 | DoubleRegister temp_reg = ToDoubleRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5226 | Label is_smi, done, heap_number; |
| 5227 | |
| 5228 | // Both smi and heap number cases are handled. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 5229 | __ UntagAndJumpIfSmi(scratch, input_reg, &is_smi); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5230 | |
| 5231 | // Check for heap number |
| 5232 | __ lw(scratch, FieldMemOperand(input_reg, HeapObject::kMapOffset)); |
| 5233 | __ Branch(&heap_number, eq, scratch, Operand(factory()->heap_number_map())); |
| 5234 | |
| 5235 | // Check for undefined. Undefined is converted to zero for clamping |
| 5236 | // conversions. |
| 5237 | DeoptimizeIf(ne, instr->environment(), input_reg, |
| 5238 | Operand(factory()->undefined_value())); |
| 5239 | __ mov(result_reg, zero_reg); |
| 5240 | __ jmp(&done); |
| 5241 | |
| 5242 | // Heap number |
| 5243 | __ bind(&heap_number); |
| 5244 | __ ldc1(double_scratch0(), FieldMemOperand(input_reg, |
| 5245 | HeapNumber::kValueOffset)); |
| 5246 | __ ClampDoubleToUint8(result_reg, double_scratch0(), temp_reg); |
| 5247 | __ jmp(&done); |
| 5248 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5249 | __ bind(&is_smi); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5250 | __ ClampUint8(result_reg, scratch); |
| 5251 | |
| 5252 | __ bind(&done); |
| 5253 | } |
| 5254 | |
| 5255 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5256 | void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5257 | Register prototype_reg = ToRegister(instr->temp()); |
| 5258 | Register map_reg = ToRegister(instr->temp2()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5259 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 5260 | ZoneList<Handle<JSObject> >* prototypes = instr->prototypes(); |
| 5261 | ZoneList<Handle<Map> >* maps = instr->maps(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5262 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 5263 | ASSERT(prototypes->length() == maps->length()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5264 | |
danno@chromium.org | 4172848 | 2013-06-12 22:31:22 +0000 | [diff] [blame] | 5265 | if (!instr->hydrogen()->CanOmitPrototypeChecks()) { |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 5266 | for (int i = 0; i < prototypes->length(); i++) { |
| 5267 | __ LoadHeapObject(prototype_reg, prototypes->at(i)); |
| 5268 | __ lw(map_reg, FieldMemOperand(prototype_reg, HeapObject::kMapOffset)); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5269 | DoCheckMapCommon(map_reg, maps->at(i), instr->environment()); |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 5270 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5271 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5272 | } |
| 5273 | |
| 5274 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5275 | void LCodeGen::DoAllocate(LAllocate* instr) { |
| 5276 | class DeferredAllocate: public LDeferredCode { |
| 5277 | public: |
| 5278 | DeferredAllocate(LCodeGen* codegen, LAllocate* instr) |
| 5279 | : LDeferredCode(codegen), instr_(instr) { } |
| 5280 | virtual void Generate() { codegen()->DoDeferredAllocate(instr_); } |
| 5281 | virtual LInstruction* instr() { return instr_; } |
| 5282 | private: |
| 5283 | LAllocate* instr_; |
| 5284 | }; |
| 5285 | |
| 5286 | DeferredAllocate* deferred = |
| 5287 | new(zone()) DeferredAllocate(this, instr); |
| 5288 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5289 | Register result = ToRegister(instr->result()); |
| 5290 | Register scratch = ToRegister(instr->temp1()); |
| 5291 | Register scratch2 = ToRegister(instr->temp2()); |
| 5292 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5293 | // Allocate memory for the object. |
| 5294 | AllocationFlags flags = TAG_OBJECT; |
| 5295 | if (instr->hydrogen()->MustAllocateDoubleAligned()) { |
| 5296 | flags = static_cast<AllocationFlags>(flags | DOUBLE_ALIGNMENT); |
| 5297 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5298 | if (instr->hydrogen()->CanAllocateInOldPointerSpace()) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 5299 | ASSERT(!instr->hydrogen()->CanAllocateInOldDataSpace()); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5300 | flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_POINTER_SPACE); |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 5301 | } else if (instr->hydrogen()->CanAllocateInOldDataSpace()) { |
| 5302 | flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_DATA_SPACE); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5303 | } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5304 | if (instr->size()->IsConstantOperand()) { |
| 5305 | int32_t size = ToInteger32(LConstantOperand::cast(instr->size())); |
jkummerow@chromium.org | 4c54a2a | 2013-03-19 17:51:30 +0000 | [diff] [blame] | 5306 | __ Allocate(size, result, scratch, scratch2, deferred->entry(), flags); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5307 | } else { |
| 5308 | Register size = ToRegister(instr->size()); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5309 | __ Allocate(size, |
| 5310 | result, |
| 5311 | scratch, |
| 5312 | scratch2, |
| 5313 | deferred->entry(), |
| 5314 | flags); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5315 | } |
| 5316 | |
| 5317 | __ bind(deferred->exit()); |
| 5318 | } |
| 5319 | |
| 5320 | |
| 5321 | void LCodeGen::DoDeferredAllocate(LAllocate* instr) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5322 | Register result = ToRegister(instr->result()); |
| 5323 | |
| 5324 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 5325 | // result register contain a valid pointer because it is already |
| 5326 | // contained in the register pointer map. |
| 5327 | __ mov(result, zero_reg); |
| 5328 | |
| 5329 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 5330 | if (instr->size()->IsRegister()) { |
| 5331 | Register size = ToRegister(instr->size()); |
| 5332 | ASSERT(!size.is(result)); |
| 5333 | __ SmiTag(size); |
| 5334 | __ push(size); |
| 5335 | } else { |
| 5336 | int32_t size = ToInteger32(LConstantOperand::cast(instr->size())); |
| 5337 | __ Push(Smi::FromInt(size)); |
| 5338 | } |
| 5339 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5340 | if (instr->hydrogen()->CanAllocateInOldPointerSpace()) { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 5341 | ASSERT(!instr->hydrogen()->CanAllocateInOldDataSpace()); |
| 5342 | CallRuntimeFromDeferred(Runtime::kAllocateInOldPointerSpace, 1, instr); |
| 5343 | } else if (instr->hydrogen()->CanAllocateInOldDataSpace()) { |
| 5344 | CallRuntimeFromDeferred(Runtime::kAllocateInOldDataSpace, 1, instr); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5345 | } else { |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 5346 | CallRuntimeFromDeferred(Runtime::kAllocateInNewSpace, 1, instr); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5347 | } |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5348 | __ StoreToSafepointRegisterSlot(v0, result); |
| 5349 | } |
| 5350 | |
| 5351 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5352 | void LCodeGen::DoToFastProperties(LToFastProperties* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5353 | ASSERT(ToRegister(instr->value()).is(a0)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5354 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 5355 | __ push(a0); |
| 5356 | CallRuntime(Runtime::kToFastProperties, 1, instr); |
| 5357 | } |
| 5358 | |
| 5359 | |
| 5360 | void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) { |
| 5361 | Label materialized; |
| 5362 | // Registers will be used as follows: |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5363 | // t3 = literals array. |
| 5364 | // a1 = regexp literal. |
| 5365 | // a0 = regexp literal clone. |
| 5366 | // a2 and t0-t2 are used as temporaries. |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 5367 | int literal_offset = |
| 5368 | FixedArray::OffsetOfElementAt(instr->hydrogen()->literal_index()); |
| 5369 | __ LoadHeapObject(t3, instr->hydrogen()->literals()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5370 | __ lw(a1, FieldMemOperand(t3, literal_offset)); |
| 5371 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 5372 | __ Branch(&materialized, ne, a1, Operand(at)); |
| 5373 | |
| 5374 | // Create regexp literal using runtime function |
| 5375 | // Result will be in v0. |
| 5376 | __ li(t2, Operand(Smi::FromInt(instr->hydrogen()->literal_index()))); |
| 5377 | __ li(t1, Operand(instr->hydrogen()->pattern())); |
| 5378 | __ li(t0, Operand(instr->hydrogen()->flags())); |
| 5379 | __ Push(t3, t2, t1, t0); |
| 5380 | CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr); |
| 5381 | __ mov(a1, v0); |
| 5382 | |
| 5383 | __ bind(&materialized); |
| 5384 | int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 5385 | Label allocated, runtime_allocate; |
| 5386 | |
jkummerow@chromium.org | 4c54a2a | 2013-03-19 17:51:30 +0000 | [diff] [blame] | 5387 | __ Allocate(size, v0, a2, a3, &runtime_allocate, TAG_OBJECT); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5388 | __ jmp(&allocated); |
| 5389 | |
| 5390 | __ bind(&runtime_allocate); |
| 5391 | __ li(a0, Operand(Smi::FromInt(size))); |
| 5392 | __ Push(a1, a0); |
| 5393 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
| 5394 | __ pop(a1); |
| 5395 | |
| 5396 | __ bind(&allocated); |
| 5397 | // Copy the content into the newly allocated memory. |
| 5398 | // (Unroll copy loop once for better throughput). |
| 5399 | for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
| 5400 | __ lw(a3, FieldMemOperand(a1, i)); |
| 5401 | __ lw(a2, FieldMemOperand(a1, i + kPointerSize)); |
| 5402 | __ sw(a3, FieldMemOperand(v0, i)); |
| 5403 | __ sw(a2, FieldMemOperand(v0, i + kPointerSize)); |
| 5404 | } |
| 5405 | if ((size % (2 * kPointerSize)) != 0) { |
| 5406 | __ lw(a3, FieldMemOperand(a1, size - kPointerSize)); |
| 5407 | __ sw(a3, FieldMemOperand(v0, size - kPointerSize)); |
| 5408 | } |
| 5409 | } |
| 5410 | |
| 5411 | |
| 5412 | void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) { |
| 5413 | // Use the fast case closure allocation code that allocates in new |
| 5414 | // space for nested functions that don't need literals cloning. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5415 | bool pretenure = instr->hydrogen()->pretenure(); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 5416 | if (!pretenure && instr->hydrogen()->has_no_literals()) { |
| 5417 | FastNewClosureStub stub(instr->hydrogen()->language_mode(), |
| 5418 | instr->hydrogen()->is_generator()); |
| 5419 | __ li(a1, Operand(instr->hydrogen()->shared_info())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5420 | __ push(a1); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 5421 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5422 | } else { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 5423 | __ li(a2, Operand(instr->hydrogen()->shared_info())); |
| 5424 | __ li(a1, Operand(pretenure ? factory()->true_value() |
| 5425 | : factory()->false_value())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5426 | __ Push(cp, a2, a1); |
| 5427 | CallRuntime(Runtime::kNewClosure, 3, instr); |
| 5428 | } |
| 5429 | } |
| 5430 | |
| 5431 | |
| 5432 | void LCodeGen::DoTypeof(LTypeof* instr) { |
| 5433 | ASSERT(ToRegister(instr->result()).is(v0)); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5434 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5435 | __ push(input); |
| 5436 | CallRuntime(Runtime::kTypeof, 1, instr); |
| 5437 | } |
| 5438 | |
| 5439 | |
| 5440 | void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5441 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5442 | |
| 5443 | Register cmp1 = no_reg; |
| 5444 | Operand cmp2 = Operand(no_reg); |
| 5445 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5446 | Condition final_branch_condition = EmitTypeofIs(instr->TrueLabel(chunk_), |
| 5447 | instr->FalseLabel(chunk_), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5448 | input, |
| 5449 | instr->type_literal(), |
| 5450 | cmp1, |
| 5451 | cmp2); |
| 5452 | |
| 5453 | ASSERT(cmp1.is_valid()); |
| 5454 | ASSERT(!cmp2.is_reg() || cmp2.rm().is_valid()); |
| 5455 | |
| 5456 | if (final_branch_condition != kNoCondition) { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5457 | EmitBranch(instr, final_branch_condition, cmp1, cmp2); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5458 | } |
| 5459 | } |
| 5460 | |
| 5461 | |
| 5462 | Condition LCodeGen::EmitTypeofIs(Label* true_label, |
| 5463 | Label* false_label, |
| 5464 | Register input, |
| 5465 | Handle<String> type_name, |
| 5466 | Register& cmp1, |
| 5467 | Operand& cmp2) { |
| 5468 | // This function utilizes the delay slot heavily. This is used to load |
| 5469 | // values that are always usable without depending on the type of the input |
| 5470 | // register. |
| 5471 | Condition final_branch_condition = kNoCondition; |
| 5472 | Register scratch = scratch0(); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5473 | if (type_name->Equals(heap()->number_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5474 | __ JumpIfSmi(input, true_label); |
| 5475 | __ lw(input, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 5476 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 5477 | cmp1 = input; |
| 5478 | cmp2 = Operand(at); |
| 5479 | final_branch_condition = eq; |
| 5480 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5481 | } else if (type_name->Equals(heap()->string_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5482 | __ JumpIfSmi(input, false_label); |
| 5483 | __ GetObjectType(input, input, scratch); |
| 5484 | __ Branch(USE_DELAY_SLOT, false_label, |
| 5485 | ge, scratch, Operand(FIRST_NONSTRING_TYPE)); |
| 5486 | // input is an object so we can load the BitFieldOffset even if we take the |
| 5487 | // other branch. |
| 5488 | __ lbu(at, FieldMemOperand(input, Map::kBitFieldOffset)); |
| 5489 | __ And(at, at, 1 << Map::kIsUndetectable); |
| 5490 | cmp1 = at; |
| 5491 | cmp2 = Operand(zero_reg); |
| 5492 | final_branch_condition = eq; |
| 5493 | |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5494 | } else if (type_name->Equals(heap()->symbol_string())) { |
| 5495 | __ JumpIfSmi(input, false_label); |
| 5496 | __ GetObjectType(input, input, scratch); |
| 5497 | cmp1 = scratch; |
| 5498 | cmp2 = Operand(SYMBOL_TYPE); |
| 5499 | final_branch_condition = eq; |
| 5500 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5501 | } else if (type_name->Equals(heap()->boolean_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5502 | __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| 5503 | __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input)); |
| 5504 | __ LoadRoot(at, Heap::kFalseValueRootIndex); |
| 5505 | cmp1 = at; |
| 5506 | cmp2 = Operand(input); |
| 5507 | final_branch_condition = eq; |
| 5508 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5509 | } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5510 | __ LoadRoot(at, Heap::kNullValueRootIndex); |
| 5511 | cmp1 = at; |
| 5512 | cmp2 = Operand(input); |
| 5513 | final_branch_condition = eq; |
| 5514 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5515 | } else if (type_name->Equals(heap()->undefined_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5516 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 5517 | __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input)); |
| 5518 | // The first instruction of JumpIfSmi is an And - it is safe in the delay |
| 5519 | // slot. |
| 5520 | __ JumpIfSmi(input, false_label); |
| 5521 | // Check for undetectable objects => true. |
| 5522 | __ lw(input, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 5523 | __ lbu(at, FieldMemOperand(input, Map::kBitFieldOffset)); |
| 5524 | __ And(at, at, 1 << Map::kIsUndetectable); |
| 5525 | cmp1 = at; |
| 5526 | cmp2 = Operand(zero_reg); |
| 5527 | final_branch_condition = ne; |
| 5528 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5529 | } else if (type_name->Equals(heap()->function_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5530 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 5531 | __ JumpIfSmi(input, false_label); |
| 5532 | __ GetObjectType(input, scratch, input); |
| 5533 | __ Branch(true_label, eq, input, Operand(JS_FUNCTION_TYPE)); |
| 5534 | cmp1 = input; |
| 5535 | cmp2 = Operand(JS_FUNCTION_PROXY_TYPE); |
| 5536 | final_branch_condition = eq; |
| 5537 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5538 | } else if (type_name->Equals(heap()->object_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5539 | __ JumpIfSmi(input, false_label); |
| 5540 | if (!FLAG_harmony_typeof) { |
| 5541 | __ LoadRoot(at, Heap::kNullValueRootIndex); |
| 5542 | __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input)); |
| 5543 | } |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5544 | Register map = input; |
| 5545 | __ GetObjectType(input, map, scratch); |
| 5546 | __ Branch(false_label, |
| 5547 | lt, scratch, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5548 | __ Branch(USE_DELAY_SLOT, false_label, |
| 5549 | gt, scratch, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5550 | // map is still valid, so the BitField can be loaded in delay slot. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5551 | // Check for undetectable objects => false. |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5552 | __ lbu(at, FieldMemOperand(map, Map::kBitFieldOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5553 | __ And(at, at, 1 << Map::kIsUndetectable); |
| 5554 | cmp1 = at; |
| 5555 | cmp2 = Operand(zero_reg); |
| 5556 | final_branch_condition = eq; |
| 5557 | |
| 5558 | } else { |
| 5559 | cmp1 = at; |
| 5560 | cmp2 = Operand(zero_reg); // Set to valid regs, to avoid caller assertion. |
| 5561 | __ Branch(false_label); |
| 5562 | } |
| 5563 | |
| 5564 | return final_branch_condition; |
| 5565 | } |
| 5566 | |
| 5567 | |
| 5568 | void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5569 | Register temp1 = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5570 | |
| 5571 | EmitIsConstructCall(temp1, scratch0()); |
| 5572 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5573 | EmitBranch(instr, eq, temp1, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5574 | Operand(Smi::FromInt(StackFrame::CONSTRUCT))); |
| 5575 | } |
| 5576 | |
| 5577 | |
| 5578 | void LCodeGen::EmitIsConstructCall(Register temp1, Register temp2) { |
| 5579 | ASSERT(!temp1.is(temp2)); |
| 5580 | // Get the frame pointer for the calling frame. |
| 5581 | __ lw(temp1, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 5582 | |
| 5583 | // Skip the arguments adaptor frame if it exists. |
| 5584 | Label check_frame_marker; |
| 5585 | __ lw(temp2, MemOperand(temp1, StandardFrameConstants::kContextOffset)); |
| 5586 | __ Branch(&check_frame_marker, ne, temp2, |
| 5587 | Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 5588 | __ lw(temp1, MemOperand(temp1, StandardFrameConstants::kCallerFPOffset)); |
| 5589 | |
| 5590 | // Check the marker in the calling frame. |
| 5591 | __ bind(&check_frame_marker); |
| 5592 | __ lw(temp1, MemOperand(temp1, StandardFrameConstants::kMarkerOffset)); |
| 5593 | } |
| 5594 | |
| 5595 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5596 | void LCodeGen::EnsureSpaceForLazyDeopt() { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5597 | if (info()->IsStub()) return; |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5598 | // Ensure that we have enough space after the previous lazy-bailout |
| 5599 | // instruction for patching the code here. |
| 5600 | int current_pc = masm()->pc_offset(); |
| 5601 | int patch_size = Deoptimizer::patch_size(); |
| 5602 | if (current_pc < last_lazy_deopt_pc_ + patch_size) { |
| 5603 | int padding_size = last_lazy_deopt_pc_ + patch_size - current_pc; |
| 5604 | ASSERT_EQ(0, padding_size % Assembler::kInstrSize); |
| 5605 | while (padding_size > 0) { |
| 5606 | __ nop(); |
| 5607 | padding_size -= Assembler::kInstrSize; |
| 5608 | } |
| 5609 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5610 | last_lazy_deopt_pc_ = masm()->pc_offset(); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5611 | } |
| 5612 | |
| 5613 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5614 | void LCodeGen::DoLazyBailout(LLazyBailout* instr) { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5615 | EnsureSpaceForLazyDeopt(); |
| 5616 | ASSERT(instr->HasEnvironment()); |
| 5617 | LEnvironment* env = instr->environment(); |
| 5618 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5619 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5620 | } |
| 5621 | |
| 5622 | |
| 5623 | void LCodeGen::DoDeoptimize(LDeoptimize* instr) { |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 5624 | if (instr->hydrogen_value()->IsSoftDeoptimize()) { |
| 5625 | SoftDeoptimize(instr->environment(), zero_reg, Operand(zero_reg)); |
| 5626 | } else { |
| 5627 | DeoptimizeIf(al, instr->environment(), zero_reg, Operand(zero_reg)); |
| 5628 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5629 | } |
| 5630 | |
| 5631 | |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 5632 | void LCodeGen::DoDummyUse(LDummyUse* instr) { |
| 5633 | // Nothing to see here, move on! |
| 5634 | } |
| 5635 | |
| 5636 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5637 | void LCodeGen::DoDeferredStackCheck(LStackCheck* instr) { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5638 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 5639 | __ CallRuntimeSaveDoubles(Runtime::kStackGuard); |
| 5640 | RecordSafepointWithLazyDeopt( |
| 5641 | instr, RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 5642 | ASSERT(instr->HasEnvironment()); |
| 5643 | LEnvironment* env = instr->environment(); |
| 5644 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5645 | } |
| 5646 | |
| 5647 | |
| 5648 | void LCodeGen::DoStackCheck(LStackCheck* instr) { |
| 5649 | class DeferredStackCheck: public LDeferredCode { |
| 5650 | public: |
| 5651 | DeferredStackCheck(LCodeGen* codegen, LStackCheck* instr) |
| 5652 | : LDeferredCode(codegen), instr_(instr) { } |
| 5653 | virtual void Generate() { codegen()->DoDeferredStackCheck(instr_); } |
| 5654 | virtual LInstruction* instr() { return instr_; } |
| 5655 | private: |
| 5656 | LStackCheck* instr_; |
| 5657 | }; |
| 5658 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5659 | ASSERT(instr->HasEnvironment()); |
| 5660 | LEnvironment* env = instr->environment(); |
| 5661 | // There is no LLazyBailout instruction for stack-checks. We have to |
| 5662 | // prepare for lazy deoptimization explicitly here. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5663 | if (instr->hydrogen()->is_function_entry()) { |
| 5664 | // Perform stack overflow check. |
| 5665 | Label done; |
| 5666 | __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| 5667 | __ Branch(&done, hs, sp, Operand(at)); |
| 5668 | StackCheckStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 5669 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5670 | EnsureSpaceForLazyDeopt(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5671 | __ bind(&done); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5672 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5673 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5674 | } else { |
| 5675 | ASSERT(instr->hydrogen()->is_backwards_branch()); |
| 5676 | // Perform stack overflow check if this goto needs it before jumping. |
| 5677 | DeferredStackCheck* deferred_stack_check = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 5678 | new(zone()) DeferredStackCheck(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5679 | __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| 5680 | __ Branch(deferred_stack_check->entry(), lo, sp, Operand(at)); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5681 | EnsureSpaceForLazyDeopt(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5682 | __ bind(instr->done_label()); |
| 5683 | deferred_stack_check->SetExit(instr->done_label()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5684 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5685 | // Don't record a deoptimization index for the safepoint here. |
| 5686 | // This will be done explicitly when emitting call and the safepoint in |
| 5687 | // the deferred code. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5688 | } |
| 5689 | } |
| 5690 | |
| 5691 | |
| 5692 | void LCodeGen::DoOsrEntry(LOsrEntry* instr) { |
| 5693 | // This is a pseudo-instruction that ensures that the environment here is |
| 5694 | // properly registered for deoptimization and records the assembler's PC |
| 5695 | // offset. |
| 5696 | LEnvironment* environment = instr->environment(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5697 | |
| 5698 | // If the environment were already registered, we would have no way of |
| 5699 | // backpatching it with the spill slot operands. |
| 5700 | ASSERT(!environment->HasBeenRegistered()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5701 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5702 | |
| 5703 | // Normally we record the first unknown OSR value as the entrypoint to the OSR |
| 5704 | // code, but if there were none, record the entrypoint here. |
| 5705 | if (osr_pc_offset_ == -1) osr_pc_offset_ = masm()->pc_offset(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5706 | } |
| 5707 | |
| 5708 | |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 5709 | void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) { |
| 5710 | Register result = ToRegister(instr->result()); |
| 5711 | Register object = ToRegister(instr->object()); |
| 5712 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 5713 | DeoptimizeIf(eq, instr->environment(), object, Operand(at)); |
| 5714 | |
| 5715 | Register null_value = t1; |
| 5716 | __ LoadRoot(null_value, Heap::kNullValueRootIndex); |
| 5717 | DeoptimizeIf(eq, instr->environment(), object, Operand(null_value)); |
| 5718 | |
| 5719 | __ And(at, object, kSmiTagMask); |
| 5720 | DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg)); |
| 5721 | |
| 5722 | STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
| 5723 | __ GetObjectType(object, a1, a1); |
| 5724 | DeoptimizeIf(le, instr->environment(), a1, Operand(LAST_JS_PROXY_TYPE)); |
| 5725 | |
| 5726 | Label use_cache, call_runtime; |
| 5727 | ASSERT(object.is(a0)); |
| 5728 | __ CheckEnumCache(null_value, &call_runtime); |
| 5729 | |
| 5730 | __ lw(result, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5731 | __ Branch(&use_cache); |
| 5732 | |
| 5733 | // Get the set of properties to enumerate. |
| 5734 | __ bind(&call_runtime); |
| 5735 | __ push(object); |
| 5736 | CallRuntime(Runtime::kGetPropertyNamesFast, 1, instr); |
| 5737 | |
| 5738 | __ lw(a1, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| 5739 | ASSERT(result.is(v0)); |
| 5740 | __ LoadRoot(at, Heap::kMetaMapRootIndex); |
| 5741 | DeoptimizeIf(ne, instr->environment(), a1, Operand(at)); |
| 5742 | __ bind(&use_cache); |
| 5743 | } |
| 5744 | |
| 5745 | |
| 5746 | void LCodeGen::DoForInCacheArray(LForInCacheArray* instr) { |
| 5747 | Register map = ToRegister(instr->map()); |
| 5748 | Register result = ToRegister(instr->result()); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 5749 | Label load_cache, done; |
| 5750 | __ EnumLength(result, map); |
| 5751 | __ Branch(&load_cache, ne, result, Operand(Smi::FromInt(0))); |
| 5752 | __ li(result, Operand(isolate()->factory()->empty_fixed_array())); |
| 5753 | __ jmp(&done); |
| 5754 | |
| 5755 | __ bind(&load_cache); |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 5756 | __ LoadInstanceDescriptors(map, result); |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 5757 | __ lw(result, |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 5758 | FieldMemOperand(result, DescriptorArray::kEnumCacheOffset)); |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 5759 | __ lw(result, |
| 5760 | FieldMemOperand(result, FixedArray::SizeFor(instr->idx()))); |
| 5761 | DeoptimizeIf(eq, instr->environment(), result, Operand(zero_reg)); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 5762 | |
| 5763 | __ bind(&done); |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 5764 | } |
| 5765 | |
| 5766 | |
| 5767 | void LCodeGen::DoCheckMapValue(LCheckMapValue* instr) { |
| 5768 | Register object = ToRegister(instr->value()); |
| 5769 | Register map = ToRegister(instr->map()); |
| 5770 | __ lw(scratch0(), FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5771 | DeoptimizeIf(ne, instr->environment(), map, Operand(scratch0())); |
| 5772 | } |
| 5773 | |
| 5774 | |
| 5775 | void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) { |
| 5776 | Register object = ToRegister(instr->object()); |
| 5777 | Register index = ToRegister(instr->index()); |
| 5778 | Register result = ToRegister(instr->result()); |
| 5779 | Register scratch = scratch0(); |
| 5780 | |
| 5781 | Label out_of_object, done; |
| 5782 | __ Branch(USE_DELAY_SLOT, &out_of_object, lt, index, Operand(zero_reg)); |
| 5783 | __ sll(scratch, index, kPointerSizeLog2 - kSmiTagSize); // In delay slot. |
| 5784 | |
| 5785 | STATIC_ASSERT(kPointerSizeLog2 > kSmiTagSize); |
| 5786 | __ Addu(scratch, object, scratch); |
| 5787 | __ lw(result, FieldMemOperand(scratch, JSObject::kHeaderSize)); |
| 5788 | |
| 5789 | __ Branch(&done); |
| 5790 | |
| 5791 | __ bind(&out_of_object); |
| 5792 | __ lw(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
| 5793 | // Index is equal to negated out of object property index plus 1. |
| 5794 | __ Subu(scratch, result, scratch); |
| 5795 | __ lw(result, FieldMemOperand(scratch, |
| 5796 | FixedArray::kHeaderSize - kPointerSize)); |
| 5797 | __ bind(&done); |
| 5798 | } |
| 5799 | |
| 5800 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5801 | #undef __ |
| 5802 | |
| 5803 | } } // namespace v8::internal |