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() { |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 65 | HPhase 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); |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 90 | for (int i = 0 ; i < prototype_maps_.length(); i++) { |
| 91 | prototype_maps_.at(i)->AddDependentCode( |
| 92 | DependentCode::kPrototypeCheckGroup, code); |
| 93 | } |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 94 | for (int i = 0 ; i < transition_maps_.length(); i++) { |
| 95 | transition_maps_.at(i)->AddDependentCode( |
| 96 | DependentCode::kTransitionGroup, code); |
| 97 | } |
ulan@chromium.org | 906e2fb | 2013-05-14 08:14:38 +0000 | [diff] [blame] | 98 | if (graph()->depends_on_empty_array_proto_elements()) { |
| 99 | isolate()->initial_object_prototype()->map()->AddDependentCode( |
| 100 | DependentCode::kElementsCantBeAddedGroup, code); |
| 101 | isolate()->initial_array_prototype()->map()->AddDependentCode( |
| 102 | DependentCode::kElementsCantBeAddedGroup, code); |
| 103 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 107 | void LChunkBuilder::Abort(const char* reason) { |
| 108 | info()->set_bailout_reason(reason); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 109 | status_ = ABORTED; |
| 110 | } |
| 111 | |
| 112 | |
| 113 | void LCodeGen::Comment(const char* format, ...) { |
| 114 | if (!FLAG_code_comments) return; |
| 115 | char buffer[4 * KB]; |
| 116 | StringBuilder builder(buffer, ARRAY_SIZE(buffer)); |
| 117 | va_list arguments; |
| 118 | va_start(arguments, format); |
| 119 | builder.AddFormattedList(format, arguments); |
| 120 | va_end(arguments); |
| 121 | |
| 122 | // Copy the string before recording it in the assembler to avoid |
| 123 | // issues when the stack allocated buffer goes out of scope. |
| 124 | size_t length = builder.position(); |
| 125 | Vector<char> copy = Vector<char>::New(length + 1); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 126 | OS::MemCopy(copy.start(), builder.Finalize(), copy.length()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 127 | masm()->RecordComment(copy.start()); |
| 128 | } |
| 129 | |
| 130 | |
| 131 | bool LCodeGen::GeneratePrologue() { |
| 132 | ASSERT(is_generating()); |
| 133 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 134 | if (info()->IsOptimizing()) { |
| 135 | ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 136 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 137 | #ifdef DEBUG |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 138 | if (strlen(FLAG_stop_at) > 0 && |
| 139 | info_->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { |
| 140 | __ stop("stop_at"); |
| 141 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 142 | #endif |
| 143 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 144 | // a1: Callee's JS function. |
| 145 | // cp: Callee's context. |
| 146 | // fp: Caller's frame pointer. |
| 147 | // lr: Caller's pc. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 148 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 149 | // Strict mode functions and builtins need to replace the receiver |
| 150 | // with undefined when called as functions (without an explicit |
| 151 | // receiver object). r5 is zero for method calls and non-zero for |
| 152 | // function calls. |
| 153 | if (!info_->is_classic_mode() || info_->is_native()) { |
| 154 | Label ok; |
| 155 | __ Branch(&ok, eq, t1, Operand(zero_reg)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 156 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 157 | int receiver_offset = scope()->num_parameters() * kPointerSize; |
| 158 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 159 | __ sw(a2, MemOperand(sp, receiver_offset)); |
| 160 | __ bind(&ok); |
| 161 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 162 | } |
| 163 | |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 164 | info()->set_prologue_offset(masm_->pc_offset()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 165 | if (NeedsEagerFrame()) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 166 | if (info()->IsStub()) { |
| 167 | __ Push(ra, fp, cp); |
| 168 | __ Push(Smi::FromInt(StackFrame::STUB)); |
| 169 | // Adjust FP to point to saved FP. |
| 170 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
| 171 | } else { |
| 172 | // The following three instructions must remain together and unmodified |
| 173 | // for code aging to work properly. |
| 174 | __ Push(ra, fp, cp, a1); |
| 175 | // Add unused load of ip to ensure prologue sequence is identical for |
| 176 | // full-codegen and lithium-codegen. |
| 177 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 178 | // Adj. FP to point to saved FP. |
| 179 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
| 180 | } |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 181 | frame_is_built_ = true; |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 182 | info_->AddNoFrameRange(0, masm_->pc_offset()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 183 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 184 | |
| 185 | // Reserve space for the stack slots needed by the code. |
| 186 | int slots = GetStackSlotCount(); |
| 187 | if (slots > 0) { |
| 188 | if (FLAG_debug_code) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 189 | __ Subu(sp, sp, Operand(slots * kPointerSize)); |
| 190 | __ push(a0); |
| 191 | __ push(a1); |
| 192 | __ Addu(a0, sp, Operand(slots * kPointerSize)); |
| 193 | __ li(a1, Operand(kSlotsZapValue)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 194 | Label loop; |
| 195 | __ bind(&loop); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 196 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 197 | __ sw(a1, MemOperand(a0, 2 * kPointerSize)); |
| 198 | __ Branch(&loop, ne, a0, Operand(sp)); |
| 199 | __ pop(a1); |
| 200 | __ pop(a0); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 201 | } else { |
| 202 | __ Subu(sp, sp, Operand(slots * kPointerSize)); |
| 203 | } |
| 204 | } |
| 205 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 206 | if (info()->saves_caller_doubles()) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 207 | Comment(";;; Save clobbered callee double registers"); |
| 208 | int count = 0; |
| 209 | BitVector* doubles = chunk()->allocated_double_registers(); |
| 210 | BitVector::Iterator save_iterator(doubles); |
| 211 | while (!save_iterator.Done()) { |
| 212 | __ sdc1(DoubleRegister::FromAllocationIndex(save_iterator.Current()), |
| 213 | MemOperand(sp, count * kDoubleSize)); |
| 214 | save_iterator.Advance(); |
| 215 | count++; |
| 216 | } |
| 217 | } |
| 218 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 219 | // Possibly allocate a local context. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 220 | int heap_slots = info()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 221 | if (heap_slots > 0) { |
| 222 | Comment(";;; Allocate local context"); |
| 223 | // Argument to NewContext is the function, which is in a1. |
| 224 | __ push(a1); |
| 225 | if (heap_slots <= FastNewContextStub::kMaximumSlots) { |
| 226 | FastNewContextStub stub(heap_slots); |
| 227 | __ CallStub(&stub); |
| 228 | } else { |
| 229 | __ CallRuntime(Runtime::kNewFunctionContext, 1); |
| 230 | } |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 231 | RecordSafepoint(Safepoint::kNoLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 232 | // Context is returned in both v0 and cp. It replaces the context |
| 233 | // passed to us. It's saved in the stack and kept live in cp. |
| 234 | __ sw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 235 | // Copy any necessary parameters into the context. |
| 236 | int num_parameters = scope()->num_parameters(); |
| 237 | for (int i = 0; i < num_parameters; i++) { |
| 238 | Variable* var = scope()->parameter(i); |
| 239 | if (var->IsContextSlot()) { |
| 240 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 241 | (num_parameters - 1 - i) * kPointerSize; |
| 242 | // Load parameter from stack. |
| 243 | __ lw(a0, MemOperand(fp, parameter_offset)); |
| 244 | // Store it in the context. |
| 245 | MemOperand target = ContextOperand(cp, var->index()); |
| 246 | __ sw(a0, target); |
| 247 | // Update the write barrier. This clobbers a3 and a0. |
| 248 | __ RecordWriteContextSlot( |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 249 | cp, target.offset(), a0, a3, GetRAState(), kSaveFPRegs); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 250 | } |
| 251 | } |
| 252 | Comment(";;; End allocate local context"); |
| 253 | } |
| 254 | |
| 255 | // Trace the call. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 256 | if (FLAG_trace && info()->IsOptimizing()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 257 | __ CallRuntime(Runtime::kTraceEnter, 0); |
| 258 | } |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 259 | EnsureSpaceForLazyDeopt(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 260 | return !is_aborted(); |
| 261 | } |
| 262 | |
| 263 | |
| 264 | bool LCodeGen::GenerateBody() { |
| 265 | ASSERT(is_generating()); |
| 266 | bool emit_instructions = true; |
| 267 | for (current_instruction_ = 0; |
| 268 | !is_aborted() && current_instruction_ < instructions_->length(); |
| 269 | current_instruction_++) { |
| 270 | LInstruction* instr = instructions_->at(current_instruction_); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 271 | |
| 272 | // Don't emit code for basic blocks with a replacement. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 273 | if (instr->IsLabel()) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 274 | emit_instructions = !LLabel::cast(instr)->HasReplacement(); |
| 275 | } |
| 276 | if (!emit_instructions) continue; |
| 277 | |
| 278 | if (FLAG_code_comments && instr->HasInterestingComment(this)) { |
| 279 | Comment(";;; <@%d,#%d> %s", |
| 280 | current_instruction_, |
| 281 | instr->hydrogen_value()->id(), |
| 282 | instr->Mnemonic()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 283 | } |
| 284 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 285 | instr->CompileToNative(this); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 286 | } |
| 287 | return !is_aborted(); |
| 288 | } |
| 289 | |
| 290 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 291 | bool LCodeGen::GenerateDeferredCode() { |
| 292 | ASSERT(is_generating()); |
| 293 | if (deferred_.length() > 0) { |
| 294 | for (int i = 0; !is_aborted() && i < deferred_.length(); i++) { |
| 295 | LDeferredCode* code = deferred_[i]; |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 296 | Comment(";;; <@%d,#%d> " |
| 297 | "-------------------- Deferred %s --------------------", |
| 298 | code->instruction_index(), |
| 299 | code->instr()->hydrogen_value()->id(), |
| 300 | code->instr()->Mnemonic()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 301 | __ bind(code->entry()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 302 | if (NeedsDeferredFrame()) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 303 | Comment(";;; Build frame"); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 304 | ASSERT(!frame_is_built_); |
| 305 | ASSERT(info()->IsStub()); |
| 306 | frame_is_built_ = true; |
| 307 | __ MultiPush(cp.bit() | fp.bit() | ra.bit()); |
| 308 | __ li(scratch0(), Operand(Smi::FromInt(StackFrame::STUB))); |
| 309 | __ push(scratch0()); |
| 310 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 311 | Comment(";;; Deferred code"); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 312 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 313 | code->Generate(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 314 | if (NeedsDeferredFrame()) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 315 | Comment(";;; Destroy frame"); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 316 | ASSERT(frame_is_built_); |
| 317 | __ pop(at); |
| 318 | __ MultiPop(cp.bit() | fp.bit() | ra.bit()); |
| 319 | frame_is_built_ = false; |
| 320 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 321 | __ jmp(code->exit()); |
| 322 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 323 | } |
| 324 | // Deferred code is the last part of the instruction sequence. Mark |
| 325 | // the generated code as done unless we bailed out. |
| 326 | if (!is_aborted()) status_ = DONE; |
| 327 | return !is_aborted(); |
| 328 | } |
| 329 | |
| 330 | |
| 331 | bool LCodeGen::GenerateDeoptJumpTable() { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 332 | // Check that the jump table is accessible from everywhere in the function |
| 333 | // code, i.e. that offsets to the table can be encoded in the 16bit signed |
| 334 | // immediate of a branch instruction. |
| 335 | // To simplify we consider the code size from the first instruction to the |
| 336 | // end of the jump table. |
| 337 | if (!is_int16((masm()->pc_offset() / Assembler::kInstrSize) + |
| 338 | deopt_jump_table_.length() * 12)) { |
| 339 | Abort("Generated code is too large"); |
| 340 | } |
| 341 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 342 | if (deopt_jump_table_.length() > 0) { |
| 343 | Comment(";;; -------------------- Jump table --------------------"); |
| 344 | } |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 345 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 346 | Label table_start; |
| 347 | __ bind(&table_start); |
| 348 | Label needs_frame_not_call; |
| 349 | Label needs_frame_is_call; |
| 350 | for (int i = 0; i < deopt_jump_table_.length(); i++) { |
| 351 | __ bind(&deopt_jump_table_[i].label); |
| 352 | Address entry = deopt_jump_table_[i].address; |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 353 | Deoptimizer::BailoutType type = deopt_jump_table_[i].bailout_type; |
svenpanne@chromium.org | 876cca8 | 2013-03-18 14:43:20 +0000 | [diff] [blame] | 354 | int id = Deoptimizer::GetDeoptimizationId(isolate(), entry, type); |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 355 | if (id == Deoptimizer::kNotDeoptimizationEntry) { |
| 356 | Comment(";;; jump table entry %d.", i); |
| 357 | } else { |
| 358 | Comment(";;; jump table entry %d: deoptimization bailout %d.", i, id); |
| 359 | } |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 360 | __ li(t9, Operand(ExternalReference::ForDeoptEntry(entry))); |
| 361 | if (deopt_jump_table_[i].needs_frame) { |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 362 | if (type == Deoptimizer::LAZY) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 363 | if (needs_frame_is_call.is_bound()) { |
| 364 | __ Branch(&needs_frame_is_call); |
| 365 | } else { |
| 366 | __ bind(&needs_frame_is_call); |
| 367 | __ MultiPush(cp.bit() | fp.bit() | ra.bit()); |
| 368 | // This variant of deopt can only be used with stubs. Since we don't |
| 369 | // have a function pointer to install in the stack frame that we're |
| 370 | // building, install a special marker there instead. |
| 371 | ASSERT(info()->IsStub()); |
| 372 | __ li(scratch0(), Operand(Smi::FromInt(StackFrame::STUB))); |
| 373 | __ push(scratch0()); |
| 374 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
| 375 | __ Call(t9); |
| 376 | } |
| 377 | } else { |
| 378 | if (needs_frame_not_call.is_bound()) { |
| 379 | __ Branch(&needs_frame_not_call); |
| 380 | } else { |
| 381 | __ bind(&needs_frame_not_call); |
| 382 | __ MultiPush(cp.bit() | fp.bit() | ra.bit()); |
| 383 | // This variant of deopt can only be used with stubs. Since we don't |
| 384 | // have a function pointer to install in the stack frame that we're |
| 385 | // building, install a special marker there instead. |
| 386 | ASSERT(info()->IsStub()); |
| 387 | __ li(scratch0(), Operand(Smi::FromInt(StackFrame::STUB))); |
| 388 | __ push(scratch0()); |
| 389 | __ Addu(fp, sp, Operand(2 * kPointerSize)); |
| 390 | __ Jump(t9); |
| 391 | } |
| 392 | } |
| 393 | } else { |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 394 | if (type == Deoptimizer::LAZY) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 395 | __ Call(t9); |
| 396 | } else { |
| 397 | __ Jump(t9); |
| 398 | } |
| 399 | } |
| 400 | } |
| 401 | __ RecordComment("]"); |
| 402 | |
| 403 | // The deoptimization jump table is the last part of the instruction |
| 404 | // sequence. Mark the generated code as done unless we bailed out. |
| 405 | if (!is_aborted()) status_ = DONE; |
| 406 | return !is_aborted(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 407 | } |
| 408 | |
| 409 | |
| 410 | bool LCodeGen::GenerateSafepointTable() { |
| 411 | ASSERT(is_done()); |
| 412 | safepoints_.Emit(masm(), GetStackSlotCount()); |
| 413 | return !is_aborted(); |
| 414 | } |
| 415 | |
| 416 | |
| 417 | Register LCodeGen::ToRegister(int index) const { |
| 418 | return Register::FromAllocationIndex(index); |
| 419 | } |
| 420 | |
| 421 | |
| 422 | DoubleRegister LCodeGen::ToDoubleRegister(int index) const { |
| 423 | return DoubleRegister::FromAllocationIndex(index); |
| 424 | } |
| 425 | |
| 426 | |
| 427 | Register LCodeGen::ToRegister(LOperand* op) const { |
| 428 | ASSERT(op->IsRegister()); |
| 429 | return ToRegister(op->index()); |
| 430 | } |
| 431 | |
| 432 | |
| 433 | Register LCodeGen::EmitLoadRegister(LOperand* op, Register scratch) { |
| 434 | if (op->IsRegister()) { |
| 435 | return ToRegister(op->index()); |
| 436 | } else if (op->IsConstantOperand()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 437 | LConstantOperand* const_op = LConstantOperand::cast(op); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 438 | HConstant* constant = chunk_->LookupConstant(const_op); |
| 439 | Handle<Object> literal = constant->handle(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 440 | Representation r = chunk_->LookupLiteralRepresentation(const_op); |
| 441 | if (r.IsInteger32()) { |
| 442 | ASSERT(literal->IsNumber()); |
| 443 | __ li(scratch, Operand(static_cast<int32_t>(literal->Number()))); |
| 444 | } else if (r.IsDouble()) { |
| 445 | Abort("EmitLoadRegister: Unsupported double immediate."); |
| 446 | } else { |
| 447 | ASSERT(r.IsTagged()); |
| 448 | if (literal->IsSmi()) { |
| 449 | __ li(scratch, Operand(literal)); |
| 450 | } else { |
| 451 | __ LoadHeapObject(scratch, Handle<HeapObject>::cast(literal)); |
| 452 | } |
| 453 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 454 | return scratch; |
| 455 | } else if (op->IsStackSlot() || op->IsArgument()) { |
| 456 | __ lw(scratch, ToMemOperand(op)); |
| 457 | return scratch; |
| 458 | } |
| 459 | UNREACHABLE(); |
| 460 | return scratch; |
| 461 | } |
| 462 | |
| 463 | |
| 464 | DoubleRegister LCodeGen::ToDoubleRegister(LOperand* op) const { |
| 465 | ASSERT(op->IsDoubleRegister()); |
| 466 | return ToDoubleRegister(op->index()); |
| 467 | } |
| 468 | |
| 469 | |
| 470 | DoubleRegister LCodeGen::EmitLoadDoubleRegister(LOperand* op, |
| 471 | FloatRegister flt_scratch, |
| 472 | DoubleRegister dbl_scratch) { |
| 473 | if (op->IsDoubleRegister()) { |
| 474 | return ToDoubleRegister(op->index()); |
| 475 | } else if (op->IsConstantOperand()) { |
| 476 | LConstantOperand* const_op = LConstantOperand::cast(op); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 477 | HConstant* constant = chunk_->LookupConstant(const_op); |
| 478 | Handle<Object> literal = constant->handle(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 479 | Representation r = chunk_->LookupLiteralRepresentation(const_op); |
| 480 | if (r.IsInteger32()) { |
| 481 | ASSERT(literal->IsNumber()); |
| 482 | __ li(at, Operand(static_cast<int32_t>(literal->Number()))); |
| 483 | __ mtc1(at, flt_scratch); |
| 484 | __ cvt_d_w(dbl_scratch, flt_scratch); |
| 485 | return dbl_scratch; |
| 486 | } else if (r.IsDouble()) { |
| 487 | Abort("unsupported double immediate"); |
| 488 | } else if (r.IsTagged()) { |
| 489 | Abort("unsupported tagged immediate"); |
| 490 | } |
| 491 | } else if (op->IsStackSlot() || op->IsArgument()) { |
| 492 | MemOperand mem_op = ToMemOperand(op); |
| 493 | __ ldc1(dbl_scratch, mem_op); |
| 494 | return dbl_scratch; |
| 495 | } |
| 496 | UNREACHABLE(); |
| 497 | return dbl_scratch; |
| 498 | } |
| 499 | |
| 500 | |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 501 | Handle<Object> LCodeGen::ToHandle(LConstantOperand* op) const { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 502 | HConstant* constant = chunk_->LookupConstant(op); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 503 | ASSERT(chunk_->LookupLiteralRepresentation(op).IsSmiOrTagged()); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 504 | return constant->handle(); |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | |
| 508 | bool LCodeGen::IsInteger32(LConstantOperand* op) const { |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame^] | 509 | return chunk_->LookupLiteralRepresentation(op).IsSmiOrInteger32(); |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 513 | bool LCodeGen::IsSmi(LConstantOperand* op) const { |
| 514 | return chunk_->LookupLiteralRepresentation(op).IsSmi(); |
| 515 | } |
| 516 | |
| 517 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 518 | int LCodeGen::ToInteger32(LConstantOperand* op) const { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 519 | HConstant* constant = chunk_->LookupConstant(op); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 520 | return constant->Integer32Value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | |
| 524 | double LCodeGen::ToDouble(LConstantOperand* op) const { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 525 | HConstant* constant = chunk_->LookupConstant(op); |
| 526 | ASSERT(constant->HasDoubleValue()); |
| 527 | return constant->DoubleValue(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 528 | } |
| 529 | |
| 530 | |
| 531 | Operand LCodeGen::ToOperand(LOperand* op) { |
| 532 | if (op->IsConstantOperand()) { |
| 533 | LConstantOperand* const_op = LConstantOperand::cast(op); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 534 | HConstant* constant = chunk()->LookupConstant(const_op); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 535 | Representation r = chunk_->LookupLiteralRepresentation(const_op); |
| 536 | if (r.IsInteger32()) { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 537 | ASSERT(constant->HasInteger32Value()); |
| 538 | return Operand(constant->Integer32Value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 539 | } else if (r.IsDouble()) { |
| 540 | Abort("ToOperand Unsupported double immediate."); |
| 541 | } |
| 542 | ASSERT(r.IsTagged()); |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 543 | return Operand(constant->handle()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 544 | } else if (op->IsRegister()) { |
| 545 | return Operand(ToRegister(op)); |
| 546 | } else if (op->IsDoubleRegister()) { |
| 547 | Abort("ToOperand IsDoubleRegister unimplemented"); |
| 548 | return Operand(0); |
| 549 | } |
| 550 | // Stack slots not implemented, use ToMemOperand instead. |
| 551 | UNREACHABLE(); |
| 552 | return Operand(0); |
| 553 | } |
| 554 | |
| 555 | |
| 556 | MemOperand LCodeGen::ToMemOperand(LOperand* op) const { |
| 557 | ASSERT(!op->IsRegister()); |
| 558 | ASSERT(!op->IsDoubleRegister()); |
| 559 | ASSERT(op->IsStackSlot() || op->IsDoubleStackSlot()); |
jkummerow@chromium.org | ac36071 | 2013-02-11 09:00:07 +0000 | [diff] [blame] | 560 | return MemOperand(fp, StackSlotOffset(op->index())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | |
| 564 | MemOperand LCodeGen::ToHighMemOperand(LOperand* op) const { |
| 565 | ASSERT(op->IsDoubleStackSlot()); |
jkummerow@chromium.org | ac36071 | 2013-02-11 09:00:07 +0000 | [diff] [blame] | 566 | return MemOperand(fp, StackSlotOffset(op->index()) + kPointerSize); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 567 | } |
| 568 | |
| 569 | |
| 570 | void LCodeGen::WriteTranslation(LEnvironment* environment, |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 571 | Translation* translation, |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 572 | int* pushed_arguments_index, |
| 573 | int* pushed_arguments_count) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 574 | if (environment == NULL) return; |
| 575 | |
| 576 | // The translation includes one command per value in the environment. |
| 577 | int translation_size = environment->values()->length(); |
| 578 | // The output frame height does not include the parameters. |
| 579 | int height = translation_size - environment->parameter_count(); |
| 580 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 581 | // Function parameters are arguments to the outermost environment. The |
| 582 | // arguments index points to the first element of a sequence of tagged |
| 583 | // values on the stack that represent the arguments. This needs to be |
| 584 | // kept in sync with the LArgumentsElements implementation. |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 585 | *pushed_arguments_index = -environment->parameter_count(); |
| 586 | *pushed_arguments_count = environment->parameter_count(); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 587 | |
| 588 | WriteTranslation(environment->outer(), |
| 589 | translation, |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 590 | pushed_arguments_index, |
| 591 | pushed_arguments_count); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 592 | bool has_closure_id = !info()->closure().is_null() && |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 593 | !info()->closure().is_identical_to(environment->closure()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 594 | int closure_id = has_closure_id |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 595 | ? DefineDeoptimizationLiteral(environment->closure()) |
| 596 | : Translation::kSelfLiteralId; |
| 597 | |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 598 | switch (environment->frame_type()) { |
| 599 | case JS_FUNCTION: |
| 600 | translation->BeginJSFrame(environment->ast_id(), closure_id, height); |
| 601 | break; |
| 602 | case JS_CONSTRUCT: |
| 603 | translation->BeginConstructStubFrame(closure_id, translation_size); |
| 604 | break; |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 605 | case JS_GETTER: |
| 606 | ASSERT(translation_size == 1); |
| 607 | ASSERT(height == 0); |
| 608 | translation->BeginGetterStubFrame(closure_id); |
| 609 | break; |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 610 | case JS_SETTER: |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 611 | ASSERT(translation_size == 2); |
| 612 | ASSERT(height == 0); |
| 613 | translation->BeginSetterStubFrame(closure_id); |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 614 | break; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 615 | case STUB: |
| 616 | translation->BeginCompiledStubFrame(); |
| 617 | break; |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 618 | case ARGUMENTS_ADAPTOR: |
| 619 | translation->BeginArgumentsAdaptorFrame(closure_id, translation_size); |
| 620 | break; |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 621 | } |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 622 | |
| 623 | // Inlined frames which push their arguments cause the index to be |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 624 | // bumped and another stack area to be used for materialization, |
| 625 | // otherwise actual argument values are unknown for inlined frames. |
| 626 | bool arguments_known = true; |
| 627 | int arguments_index = *pushed_arguments_index; |
| 628 | int arguments_count = *pushed_arguments_count; |
| 629 | if (environment->entry() != NULL) { |
| 630 | arguments_known = environment->entry()->arguments_pushed(); |
| 631 | arguments_index = arguments_index < 0 |
| 632 | ? GetStackSlotCount() : arguments_index + arguments_count; |
| 633 | arguments_count = environment->entry()->arguments_count() + 1; |
| 634 | if (environment->entry()->arguments_pushed()) { |
| 635 | *pushed_arguments_index = arguments_index; |
| 636 | *pushed_arguments_count = arguments_count; |
| 637 | } |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 638 | } |
| 639 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 640 | for (int i = 0; i < translation_size; ++i) { |
| 641 | LOperand* value = environment->values()->at(i); |
| 642 | // spilled_registers_ and spilled_double_registers_ are either |
| 643 | // both NULL or both set. |
| 644 | if (environment->spilled_registers() != NULL && value != NULL) { |
| 645 | if (value->IsRegister() && |
| 646 | environment->spilled_registers()[value->index()] != NULL) { |
| 647 | translation->MarkDuplicate(); |
| 648 | AddToTranslation(translation, |
| 649 | environment->spilled_registers()[value->index()], |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 650 | environment->HasTaggedValueAt(i), |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 651 | environment->HasUint32ValueAt(i), |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 652 | arguments_known, |
| 653 | arguments_index, |
| 654 | arguments_count); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 655 | } else if ( |
| 656 | value->IsDoubleRegister() && |
| 657 | environment->spilled_double_registers()[value->index()] != NULL) { |
| 658 | translation->MarkDuplicate(); |
| 659 | AddToTranslation( |
| 660 | translation, |
| 661 | environment->spilled_double_registers()[value->index()], |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 662 | false, |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 663 | false, |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 664 | arguments_known, |
| 665 | arguments_index, |
| 666 | arguments_count); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 667 | } |
| 668 | } |
| 669 | |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 670 | AddToTranslation(translation, |
| 671 | value, |
| 672 | environment->HasTaggedValueAt(i), |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 673 | environment->HasUint32ValueAt(i), |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 674 | arguments_known, |
| 675 | arguments_index, |
| 676 | arguments_count); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 677 | } |
| 678 | } |
| 679 | |
| 680 | |
| 681 | void LCodeGen::AddToTranslation(Translation* translation, |
| 682 | LOperand* op, |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 683 | bool is_tagged, |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 684 | bool is_uint32, |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 685 | bool arguments_known, |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 686 | int arguments_index, |
| 687 | int arguments_count) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 688 | if (op == NULL) { |
| 689 | // TODO(twuerthinger): Introduce marker operands to indicate that this value |
| 690 | // is not present and must be reconstructed from the deoptimizer. Currently |
| 691 | // this is only used for the arguments object. |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 692 | translation->StoreArgumentsObject( |
| 693 | arguments_known, arguments_index, arguments_count); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 694 | } else if (op->IsStackSlot()) { |
| 695 | if (is_tagged) { |
| 696 | translation->StoreStackSlot(op->index()); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 697 | } else if (is_uint32) { |
| 698 | translation->StoreUint32StackSlot(op->index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 699 | } else { |
| 700 | translation->StoreInt32StackSlot(op->index()); |
| 701 | } |
| 702 | } else if (op->IsDoubleStackSlot()) { |
| 703 | translation->StoreDoubleStackSlot(op->index()); |
| 704 | } else if (op->IsArgument()) { |
| 705 | ASSERT(is_tagged); |
| 706 | int src_index = GetStackSlotCount() + op->index(); |
| 707 | translation->StoreStackSlot(src_index); |
| 708 | } else if (op->IsRegister()) { |
| 709 | Register reg = ToRegister(op); |
| 710 | if (is_tagged) { |
| 711 | translation->StoreRegister(reg); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 712 | } else if (is_uint32) { |
| 713 | translation->StoreUint32Register(reg); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 714 | } else { |
| 715 | translation->StoreInt32Register(reg); |
| 716 | } |
| 717 | } else if (op->IsDoubleRegister()) { |
| 718 | DoubleRegister reg = ToDoubleRegister(op); |
| 719 | translation->StoreDoubleRegister(reg); |
| 720 | } else if (op->IsConstantOperand()) { |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 721 | HConstant* constant = chunk()->LookupConstant(LConstantOperand::cast(op)); |
| 722 | int src_index = DefineDeoptimizationLiteral(constant->handle()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 723 | translation->StoreLiteral(src_index); |
| 724 | } else { |
| 725 | UNREACHABLE(); |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | |
| 730 | void LCodeGen::CallCode(Handle<Code> code, |
| 731 | RelocInfo::Mode mode, |
| 732 | LInstruction* instr) { |
| 733 | CallCodeGeneric(code, mode, instr, RECORD_SIMPLE_SAFEPOINT); |
| 734 | } |
| 735 | |
| 736 | |
| 737 | void LCodeGen::CallCodeGeneric(Handle<Code> code, |
| 738 | RelocInfo::Mode mode, |
| 739 | LInstruction* instr, |
| 740 | SafepointMode safepoint_mode) { |
| 741 | ASSERT(instr != NULL); |
| 742 | LPointerMap* pointers = instr->pointer_map(); |
| 743 | RecordPosition(pointers->position()); |
| 744 | __ Call(code, mode); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 745 | RecordSafepointWithLazyDeopt(instr, safepoint_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 746 | } |
| 747 | |
| 748 | |
| 749 | void LCodeGen::CallRuntime(const Runtime::Function* function, |
| 750 | int num_arguments, |
| 751 | LInstruction* instr) { |
| 752 | ASSERT(instr != NULL); |
| 753 | LPointerMap* pointers = instr->pointer_map(); |
| 754 | ASSERT(pointers != NULL); |
| 755 | RecordPosition(pointers->position()); |
| 756 | |
| 757 | __ CallRuntime(function, num_arguments); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 758 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 759 | } |
| 760 | |
| 761 | |
| 762 | void LCodeGen::CallRuntimeFromDeferred(Runtime::FunctionId id, |
| 763 | int argc, |
| 764 | LInstruction* instr) { |
| 765 | __ CallRuntimeSaveDoubles(id); |
| 766 | RecordSafepointWithRegisters( |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 767 | instr->pointer_map(), argc, Safepoint::kNoLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 768 | } |
| 769 | |
| 770 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 771 | void LCodeGen::RegisterEnvironmentForDeoptimization(LEnvironment* environment, |
| 772 | Safepoint::DeoptMode mode) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 773 | if (!environment->HasBeenRegistered()) { |
| 774 | // Physical stack frame layout: |
| 775 | // -x ............. -4 0 ..................................... y |
| 776 | // [incoming arguments] [spill slots] [pushed outgoing arguments] |
| 777 | |
| 778 | // Layout of the environment: |
| 779 | // 0 ..................................................... size-1 |
| 780 | // [parameters] [locals] [expression stack including arguments] |
| 781 | |
| 782 | // Layout of the translation: |
| 783 | // 0 ........................................................ size - 1 + 4 |
| 784 | // [expression stack including arguments] [locals] [4 words] [parameters] |
| 785 | // |>------------ translation_size ------------<| |
| 786 | |
| 787 | int frame_count = 0; |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 788 | int jsframe_count = 0; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 789 | int args_index = 0; |
| 790 | int args_count = 0; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 791 | for (LEnvironment* e = environment; e != NULL; e = e->outer()) { |
| 792 | ++frame_count; |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 793 | if (e->frame_type() == JS_FUNCTION) { |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 794 | ++jsframe_count; |
| 795 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 796 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 797 | Translation translation(&translations_, frame_count, jsframe_count, zone()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 798 | WriteTranslation(environment, &translation, &args_index, &args_count); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 799 | int deoptimization_index = deoptimizations_.length(); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 800 | int pc_offset = masm()->pc_offset(); |
| 801 | environment->Register(deoptimization_index, |
| 802 | translation.index(), |
| 803 | (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 804 | deoptimizations_.Add(environment, zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 805 | } |
| 806 | } |
| 807 | |
| 808 | |
| 809 | void LCodeGen::DeoptimizeIf(Condition cc, |
| 810 | LEnvironment* environment, |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 811 | Deoptimizer::BailoutType bailout_type, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 812 | Register src1, |
| 813 | const Operand& src2) { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 814 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 815 | ASSERT(environment->HasBeenRegistered()); |
| 816 | int id = environment->deoptimization_index(); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 817 | ASSERT(info()->IsOptimizing() || info()->IsStub()); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 818 | Address entry = |
| 819 | Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 820 | if (entry == NULL) { |
| 821 | Abort("bailout was not prepared"); |
| 822 | return; |
| 823 | } |
| 824 | |
| 825 | 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] | 826 | if (FLAG_deopt_every_n_times == 1 && |
| 827 | !info()->IsStub() && |
| 828 | info()->opt_count() == id) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 829 | __ Jump(entry, RelocInfo::RUNTIME_ENTRY); |
| 830 | return; |
| 831 | } |
| 832 | |
| 833 | if (FLAG_trap_on_deopt) { |
| 834 | Label skip; |
| 835 | if (cc != al) { |
| 836 | __ Branch(&skip, NegateCondition(cc), src1, src2); |
| 837 | } |
| 838 | __ stop("trap_on_deopt"); |
| 839 | __ bind(&skip); |
| 840 | } |
| 841 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 842 | ASSERT(info()->IsStub() || frame_is_built_); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 843 | bool needs_lazy_deopt = info()->IsStub(); |
| 844 | if (cc == al && frame_is_built_) { |
| 845 | if (needs_lazy_deopt) { |
| 846 | __ Call(entry, RelocInfo::RUNTIME_ENTRY, cc, src1, src2); |
| 847 | } else { |
| 848 | __ Jump(entry, RelocInfo::RUNTIME_ENTRY, cc, src1, src2); |
| 849 | } |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 850 | } else { |
| 851 | // We often have several deopts to the same entry, reuse the last |
| 852 | // jump entry if this is the case. |
| 853 | if (deopt_jump_table_.is_empty() || |
| 854 | (deopt_jump_table_.last().address != entry) || |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 855 | (deopt_jump_table_.last().bailout_type != bailout_type) || |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 856 | (deopt_jump_table_.last().needs_frame != !frame_is_built_)) { |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 857 | Deoptimizer::JumpTableEntry table_entry(entry, |
| 858 | bailout_type, |
| 859 | !frame_is_built_); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 860 | deopt_jump_table_.Add(table_entry, zone()); |
| 861 | } |
| 862 | __ Branch(&deopt_jump_table_.last().label, cc, src1, src2); |
| 863 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 864 | } |
| 865 | |
| 866 | |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 867 | void LCodeGen::DeoptimizeIf(Condition cc, |
| 868 | LEnvironment* environment, |
| 869 | Register src1, |
| 870 | const Operand& src2) { |
| 871 | Deoptimizer::BailoutType bailout_type = info()->IsStub() |
| 872 | ? Deoptimizer::LAZY |
| 873 | : Deoptimizer::EAGER; |
| 874 | DeoptimizeIf(cc, environment, bailout_type, src1, src2); |
| 875 | } |
| 876 | |
| 877 | |
| 878 | void LCodeGen::SoftDeoptimize(LEnvironment* environment, |
| 879 | Register src1, |
| 880 | const Operand& src2) { |
| 881 | ASSERT(!info()->IsStub()); |
| 882 | DeoptimizeIf(al, environment, Deoptimizer::SOFT, src1, src2); |
| 883 | } |
| 884 | |
| 885 | |
ulan@chromium.org | 6ba1fd0 | 2013-02-14 14:56:11 +0000 | [diff] [blame] | 886 | void LCodeGen::RegisterDependentCodeForEmbeddedMaps(Handle<Code> code) { |
| 887 | ZoneList<Handle<Map> > maps(1, zone()); |
| 888 | int mode_mask = RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT); |
| 889 | for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) { |
| 890 | RelocInfo::Mode mode = it.rinfo()->rmode(); |
| 891 | if (mode == RelocInfo::EMBEDDED_OBJECT && |
| 892 | it.rinfo()->target_object()->IsMap()) { |
| 893 | Handle<Map> map(Map::cast(it.rinfo()->target_object())); |
| 894 | if (map->CanTransition()) { |
| 895 | maps.Add(map, zone()); |
| 896 | } |
| 897 | } |
| 898 | } |
| 899 | #ifdef VERIFY_HEAP |
| 900 | // This disables verification of weak embedded maps after full GC. |
| 901 | // AddDependentCode can cause a GC, which would observe the state where |
| 902 | // this code is not yet in the depended code lists of the embedded maps. |
| 903 | NoWeakEmbeddedMapsVerificationScope disable_verification_of_embedded_maps; |
| 904 | #endif |
| 905 | for (int i = 0; i < maps.length(); i++) { |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 906 | maps.at(i)->AddDependentCode(DependentCode::kWeaklyEmbeddedGroup, code); |
ulan@chromium.org | 6ba1fd0 | 2013-02-14 14:56:11 +0000 | [diff] [blame] | 907 | } |
| 908 | } |
| 909 | |
| 910 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 911 | void LCodeGen::PopulateDeoptimizationData(Handle<Code> code) { |
| 912 | int length = deoptimizations_.length(); |
| 913 | if (length == 0) return; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 914 | Handle<DeoptimizationInputData> data = |
| 915 | factory()->NewDeoptimizationInputData(length, TENURED); |
| 916 | |
svenpanne@chromium.org | 876cca8 | 2013-03-18 14:43:20 +0000 | [diff] [blame] | 917 | Handle<ByteArray> translations = |
| 918 | translations_.CreateByteArray(isolate()->factory()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 919 | data->SetTranslationByteArray(*translations); |
| 920 | data->SetInlinedFunctionCount(Smi::FromInt(inlined_function_count_)); |
| 921 | |
| 922 | Handle<FixedArray> literals = |
| 923 | factory()->NewFixedArray(deoptimization_literals_.length(), TENURED); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 924 | { ALLOW_HANDLE_DEREF(isolate(), |
| 925 | "copying a ZoneList of handles into a FixedArray"); |
| 926 | for (int i = 0; i < deoptimization_literals_.length(); i++) { |
| 927 | literals->set(i, *deoptimization_literals_[i]); |
| 928 | } |
| 929 | data->SetLiteralArray(*literals); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 930 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 931 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 932 | data->SetOsrAstId(Smi::FromInt(info_->osr_ast_id().ToInt())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 933 | data->SetOsrPcOffset(Smi::FromInt(osr_pc_offset_)); |
| 934 | |
| 935 | // Populate the deoptimization entries. |
| 936 | for (int i = 0; i < length; i++) { |
| 937 | LEnvironment* env = deoptimizations_[i]; |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 938 | data->SetAstId(i, env->ast_id()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 939 | data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); |
| 940 | data->SetArgumentsStackHeight(i, |
| 941 | Smi::FromInt(env->arguments_stack_height())); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 942 | data->SetPc(i, Smi::FromInt(env->pc_offset())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 943 | } |
| 944 | code->set_deoptimization_data(*data); |
| 945 | } |
| 946 | |
| 947 | |
| 948 | int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { |
| 949 | int result = deoptimization_literals_.length(); |
| 950 | for (int i = 0; i < deoptimization_literals_.length(); ++i) { |
| 951 | if (deoptimization_literals_[i].is_identical_to(literal)) return i; |
| 952 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 953 | deoptimization_literals_.Add(literal, zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 954 | return result; |
| 955 | } |
| 956 | |
| 957 | |
| 958 | void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { |
| 959 | ASSERT(deoptimization_literals_.length() == 0); |
| 960 | |
| 961 | const ZoneList<Handle<JSFunction> >* inlined_closures = |
| 962 | chunk()->inlined_closures(); |
| 963 | |
| 964 | for (int i = 0, length = inlined_closures->length(); |
| 965 | i < length; |
| 966 | i++) { |
| 967 | DefineDeoptimizationLiteral(inlined_closures->at(i)); |
| 968 | } |
| 969 | |
| 970 | inlined_function_count_ = deoptimization_literals_.length(); |
| 971 | } |
| 972 | |
| 973 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 974 | void LCodeGen::RecordSafepointWithLazyDeopt( |
| 975 | LInstruction* instr, SafepointMode safepoint_mode) { |
| 976 | if (safepoint_mode == RECORD_SIMPLE_SAFEPOINT) { |
| 977 | RecordSafepoint(instr->pointer_map(), Safepoint::kLazyDeopt); |
| 978 | } else { |
| 979 | ASSERT(safepoint_mode == RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 980 | RecordSafepointWithRegisters( |
| 981 | instr->pointer_map(), 0, Safepoint::kLazyDeopt); |
| 982 | } |
| 983 | } |
| 984 | |
| 985 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 986 | void LCodeGen::RecordSafepoint( |
| 987 | LPointerMap* pointers, |
| 988 | Safepoint::Kind kind, |
| 989 | int arguments, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 990 | Safepoint::DeoptMode deopt_mode) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 991 | ASSERT(expected_safepoint_kind_ == kind); |
| 992 | |
| 993 | const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); |
| 994 | Safepoint safepoint = safepoints_.DefineSafepoint(masm(), |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 995 | kind, arguments, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 996 | for (int i = 0; i < operands->length(); i++) { |
| 997 | LOperand* pointer = operands->at(i); |
| 998 | if (pointer->IsStackSlot()) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 999 | safepoint.DefinePointerSlot(pointer->index(), zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1000 | } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1001 | safepoint.DefinePointerRegister(ToRegister(pointer), zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1002 | } |
| 1003 | } |
| 1004 | if (kind & Safepoint::kWithRegisters) { |
| 1005 | // Register cp always contains a pointer to the context. |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1006 | safepoint.DefinePointerRegister(cp, zone()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | |
| 1011 | void LCodeGen::RecordSafepoint(LPointerMap* pointers, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1012 | Safepoint::DeoptMode deopt_mode) { |
| 1013 | RecordSafepoint(pointers, Safepoint::kSimple, 0, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1014 | } |
| 1015 | |
| 1016 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1017 | void LCodeGen::RecordSafepoint(Safepoint::DeoptMode deopt_mode) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1018 | LPointerMap empty_pointers(RelocInfo::kNoPosition, zone()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1019 | RecordSafepoint(&empty_pointers, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1020 | } |
| 1021 | |
| 1022 | |
| 1023 | void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, |
| 1024 | int arguments, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1025 | Safepoint::DeoptMode deopt_mode) { |
| 1026 | RecordSafepoint( |
| 1027 | pointers, Safepoint::kWithRegisters, arguments, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1028 | } |
| 1029 | |
| 1030 | |
| 1031 | void LCodeGen::RecordSafepointWithRegistersAndDoubles( |
| 1032 | LPointerMap* pointers, |
| 1033 | int arguments, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1034 | Safepoint::DeoptMode deopt_mode) { |
| 1035 | RecordSafepoint( |
| 1036 | pointers, Safepoint::kWithRegistersAndDoubles, arguments, deopt_mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1037 | } |
| 1038 | |
| 1039 | |
| 1040 | void LCodeGen::RecordPosition(int position) { |
| 1041 | if (position == RelocInfo::kNoPosition) return; |
| 1042 | masm()->positions_recorder()->RecordPosition(position); |
| 1043 | } |
| 1044 | |
| 1045 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1046 | static const char* LabelType(LLabel* label) { |
| 1047 | if (label->is_loop_header()) return " (loop header)"; |
| 1048 | if (label->is_osr_entry()) return " (OSR entry)"; |
| 1049 | return ""; |
| 1050 | } |
| 1051 | |
| 1052 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1053 | void LCodeGen::DoLabel(LLabel* label) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1054 | Comment(";;; <@%d,#%d> -------------------- B%d%s --------------------", |
| 1055 | current_instruction_, |
| 1056 | label->hydrogen_value()->id(), |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 1057 | label->block_id(), |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1058 | LabelType(label)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1059 | __ bind(label->label()); |
| 1060 | current_block_ = label->block_id(); |
| 1061 | DoGap(label); |
| 1062 | } |
| 1063 | |
| 1064 | |
| 1065 | void LCodeGen::DoParallelMove(LParallelMove* move) { |
| 1066 | resolver_.Resolve(move); |
| 1067 | } |
| 1068 | |
| 1069 | |
| 1070 | void LCodeGen::DoGap(LGap* gap) { |
| 1071 | for (int i = LGap::FIRST_INNER_POSITION; |
| 1072 | i <= LGap::LAST_INNER_POSITION; |
| 1073 | i++) { |
| 1074 | LGap::InnerPosition inner_pos = static_cast<LGap::InnerPosition>(i); |
| 1075 | LParallelMove* move = gap->GetParallelMove(inner_pos); |
| 1076 | if (move != NULL) DoParallelMove(move); |
| 1077 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1078 | } |
| 1079 | |
| 1080 | |
| 1081 | void LCodeGen::DoInstructionGap(LInstructionGap* instr) { |
| 1082 | DoGap(instr); |
| 1083 | } |
| 1084 | |
| 1085 | |
| 1086 | void LCodeGen::DoParameter(LParameter* instr) { |
| 1087 | // Nothing to do. |
| 1088 | } |
| 1089 | |
| 1090 | |
| 1091 | void LCodeGen::DoCallStub(LCallStub* instr) { |
| 1092 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 1093 | switch (instr->hydrogen()->major_key()) { |
| 1094 | case CodeStub::RegExpConstructResult: { |
| 1095 | RegExpConstructResultStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1096 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1097 | break; |
| 1098 | } |
| 1099 | case CodeStub::RegExpExec: { |
| 1100 | RegExpExecStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1101 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1102 | break; |
| 1103 | } |
| 1104 | case CodeStub::SubString: { |
| 1105 | SubStringStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1106 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1107 | break; |
| 1108 | } |
| 1109 | case CodeStub::NumberToString: { |
| 1110 | NumberToStringStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1111 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1112 | break; |
| 1113 | } |
| 1114 | case CodeStub::StringAdd: { |
| 1115 | StringAddStub stub(NO_STRING_ADD_FLAGS); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1116 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1117 | break; |
| 1118 | } |
| 1119 | case CodeStub::StringCompare: { |
| 1120 | StringCompareStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1121 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1122 | break; |
| 1123 | } |
| 1124 | case CodeStub::TranscendentalCache: { |
| 1125 | __ lw(a0, MemOperand(sp, 0)); |
| 1126 | TranscendentalCacheStub stub(instr->transcendental_type(), |
| 1127 | TranscendentalCacheStub::TAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1128 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1129 | break; |
| 1130 | } |
| 1131 | default: |
| 1132 | UNREACHABLE(); |
| 1133 | } |
| 1134 | } |
| 1135 | |
| 1136 | |
| 1137 | void LCodeGen::DoUnknownOSRValue(LUnknownOSRValue* instr) { |
| 1138 | // Nothing to do. |
| 1139 | } |
| 1140 | |
| 1141 | |
| 1142 | void LCodeGen::DoModI(LModI* instr) { |
| 1143 | Register scratch = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1144 | const Register left = ToRegister(instr->left()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1145 | const Register result = ToRegister(instr->result()); |
| 1146 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1147 | Label done; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1148 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1149 | if (instr->hydrogen()->HasPowerOf2Divisor()) { |
| 1150 | Register scratch = scratch0(); |
| 1151 | ASSERT(!left.is(scratch)); |
| 1152 | __ mov(scratch, left); |
| 1153 | int32_t p2constant = HConstant::cast( |
| 1154 | instr->hydrogen()->right())->Integer32Value(); |
| 1155 | ASSERT(p2constant != 0); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1156 | // Result always takes the sign of the dividend (left). |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1157 | p2constant = abs(p2constant); |
| 1158 | |
| 1159 | Label positive_dividend; |
| 1160 | __ Branch(USE_DELAY_SLOT, &positive_dividend, ge, left, Operand(zero_reg)); |
| 1161 | __ subu(result, zero_reg, left); |
| 1162 | __ And(result, result, p2constant - 1); |
| 1163 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1164 | DeoptimizeIf(eq, instr->environment(), result, Operand(zero_reg)); |
| 1165 | } |
| 1166 | __ Branch(USE_DELAY_SLOT, &done); |
| 1167 | __ subu(result, zero_reg, result); |
| 1168 | __ bind(&positive_dividend); |
| 1169 | __ And(result, scratch, p2constant - 1); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1170 | } else { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1171 | // div runs in the background while we check for special cases. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1172 | Register right = EmitLoadRegister(instr->right(), scratch); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1173 | __ div(left, right); |
| 1174 | |
| 1175 | // Check for x % 0. |
| 1176 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
| 1177 | DeoptimizeIf(eq, instr->environment(), right, Operand(zero_reg)); |
| 1178 | } |
| 1179 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1180 | // Check for (kMinInt % -1). |
| 1181 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1182 | Label left_not_min_int; |
| 1183 | __ Branch(&left_not_min_int, ne, left, Operand(kMinInt)); |
| 1184 | DeoptimizeIf(eq, instr->environment(), right, Operand(-1)); |
| 1185 | __ bind(&left_not_min_int); |
| 1186 | } |
| 1187 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1188 | __ Branch(USE_DELAY_SLOT, &done, ge, left, Operand(zero_reg)); |
| 1189 | __ mfhi(result); |
| 1190 | |
| 1191 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1192 | DeoptimizeIf(eq, instr->environment(), result, Operand(zero_reg)); |
| 1193 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1194 | } |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1195 | __ bind(&done); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | |
| 1199 | void LCodeGen::DoDivI(LDivI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1200 | const Register left = ToRegister(instr->left()); |
| 1201 | const Register right = ToRegister(instr->right()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1202 | const Register result = ToRegister(instr->result()); |
| 1203 | |
| 1204 | // On MIPS div is asynchronous - it will run in the background while we |
| 1205 | // check for special cases. |
| 1206 | __ div(left, right); |
| 1207 | |
| 1208 | // Check for x / 0. |
| 1209 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
| 1210 | DeoptimizeIf(eq, instr->environment(), right, Operand(zero_reg)); |
| 1211 | } |
| 1212 | |
| 1213 | // Check for (0 / -x) that will produce negative zero. |
| 1214 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1215 | Label left_not_zero; |
| 1216 | __ Branch(&left_not_zero, ne, left, Operand(zero_reg)); |
| 1217 | DeoptimizeIf(lt, instr->environment(), right, Operand(zero_reg)); |
| 1218 | __ bind(&left_not_zero); |
| 1219 | } |
| 1220 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1221 | // Check for (kMinInt / -1). |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1222 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1223 | Label left_not_min_int; |
| 1224 | __ Branch(&left_not_min_int, ne, left, Operand(kMinInt)); |
| 1225 | DeoptimizeIf(eq, instr->environment(), right, Operand(-1)); |
| 1226 | __ bind(&left_not_min_int); |
| 1227 | } |
| 1228 | |
| 1229 | __ mfhi(result); |
| 1230 | DeoptimizeIf(ne, instr->environment(), result, Operand(zero_reg)); |
| 1231 | __ mflo(result); |
| 1232 | } |
| 1233 | |
| 1234 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1235 | void LCodeGen::DoMultiplyAddD(LMultiplyAddD* instr) { |
| 1236 | DoubleRegister addend = ToDoubleRegister(instr->addend()); |
| 1237 | DoubleRegister multiplier = ToDoubleRegister(instr->multiplier()); |
| 1238 | DoubleRegister multiplicand = ToDoubleRegister(instr->multiplicand()); |
| 1239 | |
| 1240 | // This is computed in-place. |
| 1241 | ASSERT(addend.is(ToDoubleRegister(instr->result()))); |
| 1242 | |
| 1243 | __ madd_d(addend, addend, multiplier, multiplicand); |
| 1244 | } |
| 1245 | |
| 1246 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1247 | void LCodeGen::DoMulI(LMulI* instr) { |
| 1248 | Register scratch = scratch0(); |
| 1249 | Register result = ToRegister(instr->result()); |
| 1250 | // Note that result may alias left. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1251 | Register left = ToRegister(instr->left()); |
| 1252 | LOperand* right_op = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1253 | |
| 1254 | bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow); |
| 1255 | bool bailout_on_minus_zero = |
| 1256 | instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero); |
| 1257 | |
| 1258 | if (right_op->IsConstantOperand() && !can_overflow) { |
| 1259 | // Use optimized code for specific constants. |
| 1260 | int32_t constant = ToInteger32(LConstantOperand::cast(right_op)); |
| 1261 | |
| 1262 | if (bailout_on_minus_zero && (constant < 0)) { |
| 1263 | // The case of a null constant will be handled separately. |
| 1264 | // If constant is negative and left is null, the result should be -0. |
| 1265 | DeoptimizeIf(eq, instr->environment(), left, Operand(zero_reg)); |
| 1266 | } |
| 1267 | |
| 1268 | switch (constant) { |
| 1269 | case -1: |
| 1270 | __ Subu(result, zero_reg, left); |
| 1271 | break; |
| 1272 | case 0: |
| 1273 | if (bailout_on_minus_zero) { |
| 1274 | // If left is strictly negative and the constant is null, the |
| 1275 | // result is -0. Deoptimize if required, otherwise return 0. |
| 1276 | DeoptimizeIf(lt, instr->environment(), left, Operand(zero_reg)); |
| 1277 | } |
| 1278 | __ mov(result, zero_reg); |
| 1279 | break; |
| 1280 | case 1: |
| 1281 | // Nothing to do. |
| 1282 | __ Move(result, left); |
| 1283 | break; |
| 1284 | default: |
| 1285 | // Multiplying by powers of two and powers of two plus or minus |
| 1286 | // one can be done faster with shifted operands. |
| 1287 | // For other constants we emit standard code. |
| 1288 | int32_t mask = constant >> 31; |
| 1289 | uint32_t constant_abs = (constant + mask) ^ mask; |
| 1290 | |
| 1291 | if (IsPowerOf2(constant_abs) || |
| 1292 | IsPowerOf2(constant_abs - 1) || |
| 1293 | IsPowerOf2(constant_abs + 1)) { |
| 1294 | if (IsPowerOf2(constant_abs)) { |
| 1295 | int32_t shift = WhichPowerOf2(constant_abs); |
| 1296 | __ sll(result, left, shift); |
| 1297 | } else if (IsPowerOf2(constant_abs - 1)) { |
| 1298 | int32_t shift = WhichPowerOf2(constant_abs - 1); |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 1299 | __ sll(scratch, left, shift); |
| 1300 | __ Addu(result, scratch, left); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1301 | } else if (IsPowerOf2(constant_abs + 1)) { |
| 1302 | int32_t shift = WhichPowerOf2(constant_abs + 1); |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 1303 | __ sll(scratch, left, shift); |
| 1304 | __ Subu(result, scratch, left); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1305 | } |
| 1306 | |
| 1307 | // Correct the sign of the result is the constant is negative. |
| 1308 | if (constant < 0) { |
| 1309 | __ Subu(result, zero_reg, result); |
| 1310 | } |
| 1311 | |
| 1312 | } else { |
| 1313 | // Generate standard code. |
| 1314 | __ li(at, constant); |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 1315 | __ Mul(result, left, at); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1316 | } |
| 1317 | } |
| 1318 | |
| 1319 | } else { |
| 1320 | Register right = EmitLoadRegister(right_op, scratch); |
| 1321 | if (bailout_on_minus_zero) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1322 | __ Or(ToRegister(instr->temp()), left, right); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1323 | } |
| 1324 | |
| 1325 | if (can_overflow) { |
| 1326 | // hi:lo = left * right. |
| 1327 | __ mult(left, right); |
| 1328 | __ mfhi(scratch); |
| 1329 | __ mflo(result); |
| 1330 | __ sra(at, result, 31); |
| 1331 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(at)); |
| 1332 | } else { |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 1333 | __ Mul(result, left, right); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1334 | } |
| 1335 | |
| 1336 | if (bailout_on_minus_zero) { |
| 1337 | // Bail out if the result is supposed to be negative zero. |
| 1338 | Label done; |
| 1339 | __ Branch(&done, ne, result, Operand(zero_reg)); |
| 1340 | DeoptimizeIf(lt, |
| 1341 | instr->environment(), |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1342 | ToRegister(instr->temp()), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1343 | Operand(zero_reg)); |
| 1344 | __ bind(&done); |
| 1345 | } |
| 1346 | } |
| 1347 | } |
| 1348 | |
| 1349 | |
| 1350 | void LCodeGen::DoBitI(LBitI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1351 | LOperand* left_op = instr->left(); |
| 1352 | LOperand* right_op = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1353 | ASSERT(left_op->IsRegister()); |
| 1354 | Register left = ToRegister(left_op); |
| 1355 | Register result = ToRegister(instr->result()); |
| 1356 | Operand right(no_reg); |
| 1357 | |
| 1358 | if (right_op->IsStackSlot() || right_op->IsArgument()) { |
| 1359 | right = Operand(EmitLoadRegister(right_op, at)); |
| 1360 | } else { |
| 1361 | ASSERT(right_op->IsRegister() || right_op->IsConstantOperand()); |
| 1362 | right = ToOperand(right_op); |
| 1363 | } |
| 1364 | |
| 1365 | switch (instr->op()) { |
| 1366 | case Token::BIT_AND: |
| 1367 | __ And(result, left, right); |
| 1368 | break; |
| 1369 | case Token::BIT_OR: |
| 1370 | __ Or(result, left, right); |
| 1371 | break; |
| 1372 | case Token::BIT_XOR: |
| 1373 | __ Xor(result, left, right); |
| 1374 | break; |
| 1375 | default: |
| 1376 | UNREACHABLE(); |
| 1377 | break; |
| 1378 | } |
| 1379 | } |
| 1380 | |
| 1381 | |
| 1382 | void LCodeGen::DoShiftI(LShiftI* instr) { |
| 1383 | // Both 'left' and 'right' are "used at start" (see LCodeGen::DoShift), so |
| 1384 | // result may alias either of them. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1385 | LOperand* right_op = instr->right(); |
| 1386 | Register left = ToRegister(instr->left()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1387 | Register result = ToRegister(instr->result()); |
| 1388 | |
| 1389 | if (right_op->IsRegister()) { |
| 1390 | // No need to mask the right operand on MIPS, it is built into the variable |
| 1391 | // shift instructions. |
| 1392 | switch (instr->op()) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1393 | case Token::ROR: |
| 1394 | __ Ror(result, left, Operand(ToRegister(right_op))); |
| 1395 | break; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1396 | case Token::SAR: |
| 1397 | __ srav(result, left, ToRegister(right_op)); |
| 1398 | break; |
| 1399 | case Token::SHR: |
| 1400 | __ srlv(result, left, ToRegister(right_op)); |
| 1401 | if (instr->can_deopt()) { |
| 1402 | DeoptimizeIf(lt, instr->environment(), result, Operand(zero_reg)); |
| 1403 | } |
| 1404 | break; |
| 1405 | case Token::SHL: |
| 1406 | __ sllv(result, left, ToRegister(right_op)); |
| 1407 | break; |
| 1408 | default: |
| 1409 | UNREACHABLE(); |
| 1410 | break; |
| 1411 | } |
| 1412 | } else { |
| 1413 | // Mask the right_op operand. |
| 1414 | int value = ToInteger32(LConstantOperand::cast(right_op)); |
| 1415 | uint8_t shift_count = static_cast<uint8_t>(value & 0x1F); |
| 1416 | switch (instr->op()) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1417 | case Token::ROR: |
| 1418 | if (shift_count != 0) { |
| 1419 | __ Ror(result, left, Operand(shift_count)); |
| 1420 | } else { |
| 1421 | __ Move(result, left); |
| 1422 | } |
| 1423 | break; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1424 | case Token::SAR: |
| 1425 | if (shift_count != 0) { |
| 1426 | __ sra(result, left, shift_count); |
| 1427 | } else { |
| 1428 | __ Move(result, left); |
| 1429 | } |
| 1430 | break; |
| 1431 | case Token::SHR: |
| 1432 | if (shift_count != 0) { |
| 1433 | __ srl(result, left, shift_count); |
| 1434 | } else { |
| 1435 | if (instr->can_deopt()) { |
| 1436 | __ And(at, left, Operand(0x80000000)); |
| 1437 | DeoptimizeIf(ne, instr->environment(), at, Operand(zero_reg)); |
| 1438 | } |
| 1439 | __ Move(result, left); |
| 1440 | } |
| 1441 | break; |
| 1442 | case Token::SHL: |
| 1443 | if (shift_count != 0) { |
| 1444 | __ sll(result, left, shift_count); |
| 1445 | } else { |
| 1446 | __ Move(result, left); |
| 1447 | } |
| 1448 | break; |
| 1449 | default: |
| 1450 | UNREACHABLE(); |
| 1451 | break; |
| 1452 | } |
| 1453 | } |
| 1454 | } |
| 1455 | |
| 1456 | |
| 1457 | void LCodeGen::DoSubI(LSubI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1458 | LOperand* left = instr->left(); |
| 1459 | LOperand* right = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1460 | LOperand* result = instr->result(); |
| 1461 | bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow); |
| 1462 | |
| 1463 | if (!can_overflow) { |
| 1464 | if (right->IsStackSlot() || right->IsArgument()) { |
| 1465 | Register right_reg = EmitLoadRegister(right, at); |
| 1466 | __ Subu(ToRegister(result), ToRegister(left), Operand(right_reg)); |
| 1467 | } else { |
| 1468 | ASSERT(right->IsRegister() || right->IsConstantOperand()); |
| 1469 | __ Subu(ToRegister(result), ToRegister(left), ToOperand(right)); |
| 1470 | } |
| 1471 | } else { // can_overflow. |
| 1472 | Register overflow = scratch0(); |
| 1473 | Register scratch = scratch1(); |
| 1474 | if (right->IsStackSlot() || |
| 1475 | right->IsArgument() || |
| 1476 | right->IsConstantOperand()) { |
| 1477 | Register right_reg = EmitLoadRegister(right, scratch); |
| 1478 | __ SubuAndCheckForOverflow(ToRegister(result), |
| 1479 | ToRegister(left), |
| 1480 | right_reg, |
| 1481 | overflow); // Reg at also used as scratch. |
| 1482 | } else { |
| 1483 | ASSERT(right->IsRegister()); |
| 1484 | // Due to overflow check macros not supporting constant operands, |
| 1485 | // handling the IsConstantOperand case was moved to prev if clause. |
| 1486 | __ SubuAndCheckForOverflow(ToRegister(result), |
| 1487 | ToRegister(left), |
| 1488 | ToRegister(right), |
| 1489 | overflow); // Reg at also used as scratch. |
| 1490 | } |
| 1491 | DeoptimizeIf(lt, instr->environment(), overflow, Operand(zero_reg)); |
| 1492 | } |
| 1493 | } |
| 1494 | |
| 1495 | |
| 1496 | void LCodeGen::DoConstantI(LConstantI* instr) { |
| 1497 | ASSERT(instr->result()->IsRegister()); |
| 1498 | __ li(ToRegister(instr->result()), Operand(instr->value())); |
| 1499 | } |
| 1500 | |
| 1501 | |
| 1502 | void LCodeGen::DoConstantD(LConstantD* instr) { |
| 1503 | ASSERT(instr->result()->IsDoubleRegister()); |
| 1504 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 1505 | double v = instr->value(); |
| 1506 | __ Move(result, v); |
| 1507 | } |
| 1508 | |
| 1509 | |
| 1510 | void LCodeGen::DoConstantT(LConstantT* instr) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1511 | Handle<Object> value = instr->value(); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1512 | ALLOW_HANDLE_DEREF(isolate(), "smi check"); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1513 | if (value->IsSmi()) { |
| 1514 | __ li(ToRegister(instr->result()), Operand(value)); |
| 1515 | } else { |
| 1516 | __ LoadHeapObject(ToRegister(instr->result()), |
| 1517 | Handle<HeapObject>::cast(value)); |
| 1518 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1519 | } |
| 1520 | |
| 1521 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1522 | void LCodeGen::DoFixedArrayBaseLength(LFixedArrayBaseLength* instr) { |
| 1523 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1524 | Register array = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1525 | __ lw(result, FieldMemOperand(array, FixedArrayBase::kLengthOffset)); |
| 1526 | } |
| 1527 | |
| 1528 | |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 1529 | void LCodeGen::DoMapEnumLength(LMapEnumLength* instr) { |
| 1530 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1531 | Register map = ToRegister(instr->value()); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 1532 | __ EnumLength(result, map); |
| 1533 | } |
| 1534 | |
| 1535 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1536 | void LCodeGen::DoElementsKind(LElementsKind* instr) { |
| 1537 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1538 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1539 | |
| 1540 | // Load map into |result|. |
| 1541 | __ lw(result, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 1542 | // Load the map's "bit field 2" into |result|. We only need the first byte, |
| 1543 | // but the following bit field extraction takes care of that anyway. |
| 1544 | __ lbu(result, FieldMemOperand(result, Map::kBitField2Offset)); |
| 1545 | // Retrieve elements_kind from bit field 2. |
| 1546 | __ Ext(result, result, Map::kElementsKindShift, Map::kElementsKindBitCount); |
| 1547 | } |
| 1548 | |
| 1549 | |
| 1550 | void LCodeGen::DoValueOf(LValueOf* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1551 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1552 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1553 | Register map = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1554 | Label done; |
| 1555 | |
| 1556 | // If the object is a smi return the object. |
| 1557 | __ Move(result, input); |
| 1558 | __ JumpIfSmi(input, &done); |
| 1559 | |
| 1560 | // If the object is not a value type, return the object. |
| 1561 | __ GetObjectType(input, map, map); |
| 1562 | __ Branch(&done, ne, map, Operand(JS_VALUE_TYPE)); |
| 1563 | __ lw(result, FieldMemOperand(input, JSValue::kValueOffset)); |
| 1564 | |
| 1565 | __ bind(&done); |
| 1566 | } |
| 1567 | |
| 1568 | |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1569 | void LCodeGen::DoDateField(LDateField* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1570 | Register object = ToRegister(instr->date()); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1571 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1572 | Register scratch = ToRegister(instr->temp()); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1573 | Smi* index = instr->index(); |
| 1574 | Label runtime, done; |
| 1575 | ASSERT(object.is(a0)); |
| 1576 | ASSERT(result.is(v0)); |
| 1577 | ASSERT(!scratch.is(scratch0())); |
| 1578 | ASSERT(!scratch.is(object)); |
| 1579 | |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 1580 | __ And(at, object, Operand(kSmiTagMask)); |
| 1581 | DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg)); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1582 | __ GetObjectType(object, scratch, scratch); |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 1583 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(JS_DATE_TYPE)); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 1584 | |
| 1585 | if (index->value() == 0) { |
| 1586 | __ lw(result, FieldMemOperand(object, JSDate::kValueOffset)); |
| 1587 | } else { |
| 1588 | if (index->value() < JSDate::kFirstUncachedField) { |
| 1589 | ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); |
| 1590 | __ li(scratch, Operand(stamp)); |
| 1591 | __ lw(scratch, MemOperand(scratch)); |
| 1592 | __ lw(scratch0(), FieldMemOperand(object, JSDate::kCacheStampOffset)); |
| 1593 | __ Branch(&runtime, ne, scratch, Operand(scratch0())); |
| 1594 | __ lw(result, FieldMemOperand(object, JSDate::kValueOffset + |
| 1595 | kPointerSize * index->value())); |
| 1596 | __ jmp(&done); |
| 1597 | } |
| 1598 | __ bind(&runtime); |
| 1599 | __ PrepareCallCFunction(2, scratch); |
| 1600 | __ li(a1, Operand(index)); |
| 1601 | __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); |
| 1602 | __ bind(&done); |
| 1603 | } |
| 1604 | } |
| 1605 | |
| 1606 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1607 | void LCodeGen::DoSeqStringSetChar(LSeqStringSetChar* instr) { |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 1608 | Register string = ToRegister(instr->string()); |
| 1609 | Register index = ToRegister(instr->index()); |
| 1610 | Register value = ToRegister(instr->value()); |
| 1611 | Register scratch = scratch0(); |
| 1612 | String::Encoding encoding = instr->encoding(); |
| 1613 | |
| 1614 | if (FLAG_debug_code) { |
| 1615 | __ lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); |
| 1616 | __ lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); |
| 1617 | |
| 1618 | __ And(at, at, Operand(kStringRepresentationMask | kStringEncodingMask)); |
| 1619 | static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag; |
| 1620 | static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag; |
| 1621 | __ Subu(at, at, Operand(encoding == String::ONE_BYTE_ENCODING |
| 1622 | ? one_byte_seq_type : two_byte_seq_type)); |
| 1623 | __ Check(eq, "Unexpected string type", at, Operand(zero_reg)); |
| 1624 | } |
| 1625 | |
| 1626 | __ Addu(scratch, |
| 1627 | string, |
| 1628 | Operand(SeqString::kHeaderSize - kHeapObjectTag)); |
| 1629 | if (encoding == String::ONE_BYTE_ENCODING) { |
| 1630 | __ Addu(at, scratch, index); |
| 1631 | __ sb(value, MemOperand(at)); |
| 1632 | } else { |
| 1633 | __ sll(at, index, 1); |
| 1634 | __ Addu(at, scratch, at); |
| 1635 | __ sh(value, MemOperand(at)); |
| 1636 | } |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1637 | } |
| 1638 | |
| 1639 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1640 | void LCodeGen::DoBitNotI(LBitNotI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1641 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1642 | Register result = ToRegister(instr->result()); |
| 1643 | __ Nor(result, zero_reg, Operand(input)); |
| 1644 | } |
| 1645 | |
| 1646 | |
| 1647 | void LCodeGen::DoThrow(LThrow* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1648 | Register input_reg = EmitLoadRegister(instr->value(), at); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1649 | __ push(input_reg); |
| 1650 | CallRuntime(Runtime::kThrow, 1, instr); |
| 1651 | |
| 1652 | if (FLAG_debug_code) { |
| 1653 | __ stop("Unreachable code."); |
| 1654 | } |
| 1655 | } |
| 1656 | |
| 1657 | |
| 1658 | void LCodeGen::DoAddI(LAddI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1659 | LOperand* left = instr->left(); |
| 1660 | LOperand* right = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1661 | LOperand* result = instr->result(); |
| 1662 | bool can_overflow = instr->hydrogen()->CheckFlag(HValue::kCanOverflow); |
| 1663 | |
| 1664 | if (!can_overflow) { |
| 1665 | if (right->IsStackSlot() || right->IsArgument()) { |
| 1666 | Register right_reg = EmitLoadRegister(right, at); |
| 1667 | __ Addu(ToRegister(result), ToRegister(left), Operand(right_reg)); |
| 1668 | } else { |
| 1669 | ASSERT(right->IsRegister() || right->IsConstantOperand()); |
| 1670 | __ Addu(ToRegister(result), ToRegister(left), ToOperand(right)); |
| 1671 | } |
| 1672 | } else { // can_overflow. |
| 1673 | Register overflow = scratch0(); |
| 1674 | Register scratch = scratch1(); |
| 1675 | if (right->IsStackSlot() || |
| 1676 | right->IsArgument() || |
| 1677 | right->IsConstantOperand()) { |
| 1678 | Register right_reg = EmitLoadRegister(right, scratch); |
| 1679 | __ AdduAndCheckForOverflow(ToRegister(result), |
| 1680 | ToRegister(left), |
| 1681 | right_reg, |
| 1682 | overflow); // Reg at also used as scratch. |
| 1683 | } else { |
| 1684 | ASSERT(right->IsRegister()); |
| 1685 | // Due to overflow check macros not supporting constant operands, |
| 1686 | // handling the IsConstantOperand case was moved to prev if clause. |
| 1687 | __ AdduAndCheckForOverflow(ToRegister(result), |
| 1688 | ToRegister(left), |
| 1689 | ToRegister(right), |
| 1690 | overflow); // Reg at also used as scratch. |
| 1691 | } |
| 1692 | DeoptimizeIf(lt, instr->environment(), overflow, Operand(zero_reg)); |
| 1693 | } |
| 1694 | } |
| 1695 | |
| 1696 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1697 | void LCodeGen::DoMathMinMax(LMathMinMax* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1698 | LOperand* left = instr->left(); |
| 1699 | LOperand* right = instr->right(); |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1700 | HMathMinMax::Operation operation = instr->hydrogen()->operation(); |
| 1701 | Condition condition = (operation == HMathMinMax::kMathMin) ? le : ge; |
| 1702 | if (instr->hydrogen()->representation().IsInteger32()) { |
| 1703 | Register left_reg = ToRegister(left); |
| 1704 | Operand right_op = (right->IsRegister() || right->IsConstantOperand()) |
| 1705 | ? ToOperand(right) |
| 1706 | : Operand(EmitLoadRegister(right, at)); |
| 1707 | Register result_reg = ToRegister(instr->result()); |
| 1708 | Label return_right, done; |
| 1709 | if (!result_reg.is(left_reg)) { |
| 1710 | __ Branch(&return_right, NegateCondition(condition), left_reg, right_op); |
| 1711 | __ mov(result_reg, left_reg); |
| 1712 | __ Branch(&done); |
| 1713 | } |
| 1714 | __ Branch(&done, condition, left_reg, right_op); |
| 1715 | __ bind(&return_right); |
| 1716 | __ Addu(result_reg, zero_reg, right_op); |
| 1717 | __ bind(&done); |
| 1718 | } else { |
| 1719 | ASSERT(instr->hydrogen()->representation().IsDouble()); |
| 1720 | FPURegister left_reg = ToDoubleRegister(left); |
| 1721 | FPURegister right_reg = ToDoubleRegister(right); |
| 1722 | FPURegister result_reg = ToDoubleRegister(instr->result()); |
| 1723 | Label check_nan_left, check_zero, return_left, return_right, done; |
| 1724 | __ BranchF(&check_zero, &check_nan_left, eq, left_reg, right_reg); |
| 1725 | __ BranchF(&return_left, NULL, condition, left_reg, right_reg); |
| 1726 | __ Branch(&return_right); |
| 1727 | |
| 1728 | __ bind(&check_zero); |
| 1729 | // left == right != 0. |
| 1730 | __ BranchF(&return_left, NULL, ne, left_reg, kDoubleRegZero); |
| 1731 | // At this point, both left and right are either 0 or -0. |
| 1732 | if (operation == HMathMinMax::kMathMin) { |
| 1733 | __ neg_d(left_reg, left_reg); |
| 1734 | __ sub_d(result_reg, left_reg, right_reg); |
| 1735 | __ neg_d(result_reg, result_reg); |
| 1736 | } else { |
| 1737 | __ add_d(result_reg, left_reg, right_reg); |
| 1738 | } |
| 1739 | __ Branch(&done); |
| 1740 | |
| 1741 | __ bind(&check_nan_left); |
| 1742 | // left == NaN. |
| 1743 | __ BranchF(NULL, &return_left, eq, left_reg, left_reg); |
| 1744 | __ bind(&return_right); |
| 1745 | if (!right_reg.is(result_reg)) { |
| 1746 | __ mov_d(result_reg, right_reg); |
| 1747 | } |
| 1748 | __ Branch(&done); |
| 1749 | |
| 1750 | __ bind(&return_left); |
| 1751 | if (!left_reg.is(result_reg)) { |
| 1752 | __ mov_d(result_reg, left_reg); |
| 1753 | } |
| 1754 | __ bind(&done); |
| 1755 | } |
| 1756 | } |
| 1757 | |
| 1758 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1759 | void LCodeGen::DoArithmeticD(LArithmeticD* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1760 | DoubleRegister left = ToDoubleRegister(instr->left()); |
| 1761 | DoubleRegister right = ToDoubleRegister(instr->right()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1762 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 1763 | switch (instr->op()) { |
| 1764 | case Token::ADD: |
| 1765 | __ add_d(result, left, right); |
| 1766 | break; |
| 1767 | case Token::SUB: |
| 1768 | __ sub_d(result, left, right); |
| 1769 | break; |
| 1770 | case Token::MUL: |
| 1771 | __ mul_d(result, left, right); |
| 1772 | break; |
| 1773 | case Token::DIV: |
| 1774 | __ div_d(result, left, right); |
| 1775 | break; |
| 1776 | case Token::MOD: { |
| 1777 | // Save a0-a3 on the stack. |
| 1778 | RegList saved_regs = a0.bit() | a1.bit() | a2.bit() | a3.bit(); |
| 1779 | __ MultiPush(saved_regs); |
| 1780 | |
| 1781 | __ PrepareCallCFunction(0, 2, scratch0()); |
| 1782 | __ SetCallCDoubleArguments(left, right); |
| 1783 | __ CallCFunction( |
| 1784 | ExternalReference::double_fp_operation(Token::MOD, isolate()), |
| 1785 | 0, 2); |
| 1786 | // Move the result in the double result register. |
| 1787 | __ GetCFunctionDoubleResult(result); |
| 1788 | |
| 1789 | // Restore saved register. |
| 1790 | __ MultiPop(saved_regs); |
| 1791 | break; |
| 1792 | } |
| 1793 | default: |
| 1794 | UNREACHABLE(); |
| 1795 | break; |
| 1796 | } |
| 1797 | } |
| 1798 | |
| 1799 | |
| 1800 | void LCodeGen::DoArithmeticT(LArithmeticT* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1801 | ASSERT(ToRegister(instr->left()).is(a1)); |
| 1802 | ASSERT(ToRegister(instr->right()).is(a0)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1803 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 1804 | |
| 1805 | BinaryOpStub stub(instr->op(), NO_OVERWRITE); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1806 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1807 | // Other arch use a nop here, to signal that there is no inlined |
| 1808 | // patchable code. Mips does not need the nop, since our marker |
| 1809 | // instruction (andi zero_reg) will never be used in normal code. |
| 1810 | } |
| 1811 | |
| 1812 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1813 | int LCodeGen::GetNextEmittedBlock() const { |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1814 | for (int i = current_block_ + 1; i < graph()->blocks()->length(); ++i) { |
| 1815 | if (!chunk_->GetLabel(i)->HasReplacement()) return i; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1816 | } |
| 1817 | return -1; |
| 1818 | } |
| 1819 | |
| 1820 | |
| 1821 | void LCodeGen::EmitBranch(int left_block, int right_block, |
| 1822 | Condition cc, Register src1, const Operand& src2) { |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1823 | int next_block = GetNextEmittedBlock(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1824 | right_block = chunk_->LookupDestination(right_block); |
| 1825 | left_block = chunk_->LookupDestination(left_block); |
| 1826 | if (right_block == left_block) { |
| 1827 | EmitGoto(left_block); |
| 1828 | } else if (left_block == next_block) { |
| 1829 | __ Branch(chunk_->GetAssemblyLabel(right_block), |
| 1830 | NegateCondition(cc), src1, src2); |
| 1831 | } else if (right_block == next_block) { |
| 1832 | __ Branch(chunk_->GetAssemblyLabel(left_block), cc, src1, src2); |
| 1833 | } else { |
| 1834 | __ Branch(chunk_->GetAssemblyLabel(left_block), cc, src1, src2); |
| 1835 | __ Branch(chunk_->GetAssemblyLabel(right_block)); |
| 1836 | } |
| 1837 | } |
| 1838 | |
| 1839 | |
| 1840 | void LCodeGen::EmitBranchF(int left_block, int right_block, |
| 1841 | Condition cc, FPURegister src1, FPURegister src2) { |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1842 | int next_block = GetNextEmittedBlock(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1843 | right_block = chunk_->LookupDestination(right_block); |
| 1844 | left_block = chunk_->LookupDestination(left_block); |
| 1845 | if (right_block == left_block) { |
| 1846 | EmitGoto(left_block); |
| 1847 | } else if (left_block == next_block) { |
| 1848 | __ BranchF(chunk_->GetAssemblyLabel(right_block), NULL, |
| 1849 | NegateCondition(cc), src1, src2); |
| 1850 | } else if (right_block == next_block) { |
| 1851 | __ BranchF(chunk_->GetAssemblyLabel(left_block), NULL, cc, src1, src2); |
| 1852 | } else { |
| 1853 | __ BranchF(chunk_->GetAssemblyLabel(left_block), NULL, cc, src1, src2); |
| 1854 | __ Branch(chunk_->GetAssemblyLabel(right_block)); |
| 1855 | } |
| 1856 | } |
| 1857 | |
| 1858 | |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 1859 | void LCodeGen::DoDebugBreak(LDebugBreak* instr) { |
| 1860 | __ stop("LDebugBreak"); |
| 1861 | } |
| 1862 | |
| 1863 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1864 | void LCodeGen::DoBranch(LBranch* instr) { |
| 1865 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1866 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1867 | |
| 1868 | Representation r = instr->hydrogen()->value()->representation(); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 1869 | if (r.IsInteger32() || r.IsSmi()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1870 | Register reg = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1871 | EmitBranch(true_block, false_block, ne, reg, Operand(zero_reg)); |
| 1872 | } else if (r.IsDouble()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1873 | DoubleRegister reg = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1874 | // Test the double value. Zero and NaN are false. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1875 | EmitBranchF(true_block, false_block, nue, reg, kDoubleRegZero); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1876 | } else { |
| 1877 | ASSERT(r.IsTagged()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1878 | Register reg = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1879 | HType type = instr->hydrogen()->value()->type(); |
| 1880 | if (type.IsBoolean()) { |
| 1881 | __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| 1882 | EmitBranch(true_block, false_block, eq, reg, Operand(at)); |
| 1883 | } else if (type.IsSmi()) { |
| 1884 | EmitBranch(true_block, false_block, ne, reg, Operand(zero_reg)); |
| 1885 | } else { |
| 1886 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1887 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1888 | |
| 1889 | ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types(); |
| 1890 | // Avoid deopts in the case where we've never executed this path before. |
| 1891 | if (expected.IsEmpty()) expected = ToBooleanStub::all_types(); |
| 1892 | |
| 1893 | if (expected.Contains(ToBooleanStub::UNDEFINED)) { |
| 1894 | // undefined -> false. |
| 1895 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 1896 | __ Branch(false_label, eq, reg, Operand(at)); |
| 1897 | } |
| 1898 | if (expected.Contains(ToBooleanStub::BOOLEAN)) { |
| 1899 | // Boolean -> its value. |
| 1900 | __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| 1901 | __ Branch(true_label, eq, reg, Operand(at)); |
| 1902 | __ LoadRoot(at, Heap::kFalseValueRootIndex); |
| 1903 | __ Branch(false_label, eq, reg, Operand(at)); |
| 1904 | } |
| 1905 | if (expected.Contains(ToBooleanStub::NULL_TYPE)) { |
| 1906 | // 'null' -> false. |
| 1907 | __ LoadRoot(at, Heap::kNullValueRootIndex); |
| 1908 | __ Branch(false_label, eq, reg, Operand(at)); |
| 1909 | } |
| 1910 | |
| 1911 | if (expected.Contains(ToBooleanStub::SMI)) { |
| 1912 | // Smis: 0 -> false, all other -> true. |
| 1913 | __ Branch(false_label, eq, reg, Operand(zero_reg)); |
| 1914 | __ JumpIfSmi(reg, true_label); |
| 1915 | } else if (expected.NeedsMap()) { |
| 1916 | // If we need a map later and have a Smi -> deopt. |
| 1917 | __ And(at, reg, Operand(kSmiTagMask)); |
| 1918 | DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg)); |
| 1919 | } |
| 1920 | |
| 1921 | const Register map = scratch0(); |
| 1922 | if (expected.NeedsMap()) { |
| 1923 | __ lw(map, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 1924 | if (expected.CanBeUndetectable()) { |
| 1925 | // Undetectable -> false. |
| 1926 | __ lbu(at, FieldMemOperand(map, Map::kBitFieldOffset)); |
| 1927 | __ And(at, at, Operand(1 << Map::kIsUndetectable)); |
| 1928 | __ Branch(false_label, ne, at, Operand(zero_reg)); |
| 1929 | } |
| 1930 | } |
| 1931 | |
| 1932 | if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) { |
| 1933 | // spec object -> true. |
| 1934 | __ lbu(at, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 1935 | __ Branch(true_label, ge, at, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 1936 | } |
| 1937 | |
| 1938 | if (expected.Contains(ToBooleanStub::STRING)) { |
| 1939 | // String value -> false iff empty. |
| 1940 | Label not_string; |
| 1941 | __ lbu(at, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 1942 | __ Branch(¬_string, ge , at, Operand(FIRST_NONSTRING_TYPE)); |
| 1943 | __ lw(at, FieldMemOperand(reg, String::kLengthOffset)); |
| 1944 | __ Branch(true_label, ne, at, Operand(zero_reg)); |
| 1945 | __ Branch(false_label); |
| 1946 | __ bind(¬_string); |
| 1947 | } |
| 1948 | |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 1949 | if (expected.Contains(ToBooleanStub::SYMBOL)) { |
| 1950 | // Symbol value -> true. |
| 1951 | const Register scratch = scratch1(); |
| 1952 | __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
| 1953 | __ Branch(true_label, eq, scratch, Operand(SYMBOL_TYPE)); |
| 1954 | } |
| 1955 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1956 | if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { |
| 1957 | // heap number -> false iff +0, -0, or NaN. |
| 1958 | DoubleRegister dbl_scratch = double_scratch0(); |
| 1959 | Label not_heap_number; |
| 1960 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 1961 | __ Branch(¬_heap_number, ne, map, Operand(at)); |
| 1962 | __ ldc1(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset)); |
| 1963 | __ BranchF(true_label, false_label, ne, dbl_scratch, kDoubleRegZero); |
| 1964 | // Falls through if dbl_scratch == 0. |
| 1965 | __ Branch(false_label); |
| 1966 | __ bind(¬_heap_number); |
| 1967 | } |
| 1968 | |
| 1969 | // We've seen something for the first time -> deopt. |
| 1970 | DeoptimizeIf(al, instr->environment(), zero_reg, Operand(zero_reg)); |
| 1971 | } |
| 1972 | } |
| 1973 | } |
| 1974 | |
| 1975 | |
| 1976 | void LCodeGen::EmitGoto(int block) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1977 | if (!IsNextEmittedBlock(block)) { |
| 1978 | __ jmp(chunk_->GetAssemblyLabel(chunk_->LookupDestination(block))); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 1979 | } |
| 1980 | } |
| 1981 | |
| 1982 | |
| 1983 | void LCodeGen::DoGoto(LGoto* instr) { |
| 1984 | EmitGoto(instr->block_id()); |
| 1985 | } |
| 1986 | |
| 1987 | |
| 1988 | Condition LCodeGen::TokenToCondition(Token::Value op, bool is_unsigned) { |
| 1989 | Condition cond = kNoCondition; |
| 1990 | switch (op) { |
| 1991 | case Token::EQ: |
| 1992 | case Token::EQ_STRICT: |
| 1993 | cond = eq; |
| 1994 | break; |
| 1995 | case Token::LT: |
| 1996 | cond = is_unsigned ? lo : lt; |
| 1997 | break; |
| 1998 | case Token::GT: |
| 1999 | cond = is_unsigned ? hi : gt; |
| 2000 | break; |
| 2001 | case Token::LTE: |
| 2002 | cond = is_unsigned ? ls : le; |
| 2003 | break; |
| 2004 | case Token::GTE: |
| 2005 | cond = is_unsigned ? hs : ge; |
| 2006 | break; |
| 2007 | case Token::IN: |
| 2008 | case Token::INSTANCEOF: |
| 2009 | default: |
| 2010 | UNREACHABLE(); |
| 2011 | } |
| 2012 | return cond; |
| 2013 | } |
| 2014 | |
| 2015 | |
| 2016 | void LCodeGen::DoCmpIDAndBranch(LCmpIDAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2017 | LOperand* left = instr->left(); |
| 2018 | LOperand* right = instr->right(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2019 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2020 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2021 | |
| 2022 | Condition cond = TokenToCondition(instr->op(), false); |
| 2023 | |
| 2024 | if (left->IsConstantOperand() && right->IsConstantOperand()) { |
| 2025 | // We can statically evaluate the comparison. |
| 2026 | double left_val = ToDouble(LConstantOperand::cast(left)); |
| 2027 | double right_val = ToDouble(LConstantOperand::cast(right)); |
| 2028 | int next_block = |
| 2029 | EvalComparison(instr->op(), left_val, right_val) ? true_block |
| 2030 | : false_block; |
| 2031 | EmitGoto(next_block); |
| 2032 | } else { |
| 2033 | if (instr->is_double()) { |
| 2034 | // Compare left and right as doubles and load the |
| 2035 | // resulting flags into the normal status register. |
| 2036 | FPURegister left_reg = ToDoubleRegister(left); |
| 2037 | FPURegister right_reg = ToDoubleRegister(right); |
| 2038 | |
| 2039 | // If a NaN is involved, i.e. the result is unordered, |
| 2040 | // jump to false block label. |
| 2041 | __ BranchF(NULL, chunk_->GetAssemblyLabel(false_block), eq, |
| 2042 | left_reg, right_reg); |
| 2043 | |
| 2044 | EmitBranchF(true_block, false_block, cond, left_reg, right_reg); |
| 2045 | } else { |
| 2046 | Register cmp_left; |
| 2047 | Operand cmp_right = Operand(0); |
| 2048 | |
| 2049 | if (right->IsConstantOperand()) { |
| 2050 | cmp_left = ToRegister(left); |
| 2051 | cmp_right = Operand(ToInteger32(LConstantOperand::cast(right))); |
| 2052 | } else if (left->IsConstantOperand()) { |
| 2053 | cmp_left = ToRegister(right); |
| 2054 | cmp_right = Operand(ToInteger32(LConstantOperand::cast(left))); |
| 2055 | // We transposed the operands. Reverse the condition. |
| 2056 | cond = ReverseCondition(cond); |
| 2057 | } else { |
| 2058 | cmp_left = ToRegister(left); |
| 2059 | cmp_right = Operand(ToRegister(right)); |
| 2060 | } |
| 2061 | |
| 2062 | EmitBranch(true_block, false_block, cond, cmp_left, cmp_right); |
| 2063 | } |
| 2064 | } |
| 2065 | } |
| 2066 | |
| 2067 | |
| 2068 | void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2069 | Register left = ToRegister(instr->left()); |
| 2070 | Register right = ToRegister(instr->right()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2071 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2072 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2073 | |
| 2074 | EmitBranch(true_block, false_block, eq, left, Operand(right)); |
| 2075 | } |
| 2076 | |
| 2077 | |
| 2078 | void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2079 | Register left = ToRegister(instr->left()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2080 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2081 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2082 | |
| 2083 | EmitBranch(true_block, false_block, eq, left, |
| 2084 | Operand(instr->hydrogen()->right())); |
| 2085 | } |
| 2086 | |
| 2087 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2088 | Condition LCodeGen::EmitIsObject(Register input, |
| 2089 | Register temp1, |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2090 | Register temp2, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2091 | Label* is_not_object, |
| 2092 | Label* is_object) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2093 | __ JumpIfSmi(input, is_not_object); |
| 2094 | |
| 2095 | __ LoadRoot(temp2, Heap::kNullValueRootIndex); |
| 2096 | __ Branch(is_object, eq, input, Operand(temp2)); |
| 2097 | |
| 2098 | // Load map. |
| 2099 | __ lw(temp1, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 2100 | // Undetectable objects behave like undefined. |
| 2101 | __ lbu(temp2, FieldMemOperand(temp1, Map::kBitFieldOffset)); |
| 2102 | __ And(temp2, temp2, Operand(1 << Map::kIsUndetectable)); |
| 2103 | __ Branch(is_not_object, ne, temp2, Operand(zero_reg)); |
| 2104 | |
| 2105 | // Load instance type and check that it is in object type range. |
| 2106 | __ lbu(temp2, FieldMemOperand(temp1, Map::kInstanceTypeOffset)); |
| 2107 | __ Branch(is_not_object, |
| 2108 | lt, temp2, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2109 | |
| 2110 | return le; |
| 2111 | } |
| 2112 | |
| 2113 | |
| 2114 | void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2115 | Register reg = ToRegister(instr->value()); |
| 2116 | Register temp1 = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2117 | Register temp2 = scratch0(); |
| 2118 | |
| 2119 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2120 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2121 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 2122 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2123 | |
| 2124 | Condition true_cond = |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2125 | EmitIsObject(reg, temp1, temp2, false_label, true_label); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2126 | |
| 2127 | EmitBranch(true_block, false_block, true_cond, temp2, |
| 2128 | Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2129 | } |
| 2130 | |
| 2131 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2132 | Condition LCodeGen::EmitIsString(Register input, |
| 2133 | Register temp1, |
| 2134 | Label* is_not_string) { |
| 2135 | __ JumpIfSmi(input, is_not_string); |
| 2136 | __ GetObjectType(input, temp1, temp1); |
| 2137 | |
| 2138 | return lt; |
| 2139 | } |
| 2140 | |
| 2141 | |
| 2142 | void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2143 | Register reg = ToRegister(instr->value()); |
| 2144 | Register temp1 = ToRegister(instr->temp()); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2145 | |
| 2146 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2147 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2148 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2149 | |
| 2150 | Condition true_cond = |
| 2151 | EmitIsString(reg, temp1, false_label); |
| 2152 | |
| 2153 | EmitBranch(true_block, false_block, true_cond, temp1, |
| 2154 | Operand(FIRST_NONSTRING_TYPE)); |
| 2155 | } |
| 2156 | |
| 2157 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2158 | void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) { |
| 2159 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2160 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2161 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2162 | Register input_reg = EmitLoadRegister(instr->value(), at); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2163 | __ And(at, input_reg, kSmiTagMask); |
| 2164 | EmitBranch(true_block, false_block, eq, at, Operand(zero_reg)); |
| 2165 | } |
| 2166 | |
| 2167 | |
| 2168 | void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2169 | Register input = ToRegister(instr->value()); |
| 2170 | Register temp = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2171 | |
| 2172 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2173 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2174 | |
| 2175 | __ JumpIfSmi(input, chunk_->GetAssemblyLabel(false_block)); |
| 2176 | __ lw(temp, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 2177 | __ lbu(temp, FieldMemOperand(temp, Map::kBitFieldOffset)); |
| 2178 | __ And(at, temp, Operand(1 << Map::kIsUndetectable)); |
| 2179 | EmitBranch(true_block, false_block, ne, at, Operand(zero_reg)); |
| 2180 | } |
| 2181 | |
| 2182 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2183 | static Condition ComputeCompareCondition(Token::Value op) { |
| 2184 | switch (op) { |
| 2185 | case Token::EQ_STRICT: |
| 2186 | case Token::EQ: |
| 2187 | return eq; |
| 2188 | case Token::LT: |
| 2189 | return lt; |
| 2190 | case Token::GT: |
| 2191 | return gt; |
| 2192 | case Token::LTE: |
| 2193 | return le; |
| 2194 | case Token::GTE: |
| 2195 | return ge; |
| 2196 | default: |
| 2197 | UNREACHABLE(); |
| 2198 | return kNoCondition; |
| 2199 | } |
| 2200 | } |
| 2201 | |
| 2202 | |
| 2203 | void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) { |
| 2204 | Token::Value op = instr->op(); |
| 2205 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2206 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2207 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2208 | Handle<Code> ic = CompareIC::GetUninitialized(isolate(), op); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 2209 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2210 | |
| 2211 | Condition condition = ComputeCompareCondition(op); |
| 2212 | |
| 2213 | EmitBranch(true_block, false_block, condition, v0, Operand(zero_reg)); |
| 2214 | } |
| 2215 | |
| 2216 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2217 | static InstanceType TestType(HHasInstanceTypeAndBranch* instr) { |
| 2218 | InstanceType from = instr->from(); |
| 2219 | InstanceType to = instr->to(); |
| 2220 | if (from == FIRST_TYPE) return to; |
| 2221 | ASSERT(from == to || to == LAST_TYPE); |
| 2222 | return from; |
| 2223 | } |
| 2224 | |
| 2225 | |
| 2226 | static Condition BranchCondition(HHasInstanceTypeAndBranch* instr) { |
| 2227 | InstanceType from = instr->from(); |
| 2228 | InstanceType to = instr->to(); |
| 2229 | if (from == to) return eq; |
| 2230 | if (to == LAST_TYPE) return hs; |
| 2231 | if (from == FIRST_TYPE) return ls; |
| 2232 | UNREACHABLE(); |
| 2233 | return eq; |
| 2234 | } |
| 2235 | |
| 2236 | |
| 2237 | void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) { |
| 2238 | Register scratch = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2239 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2240 | |
| 2241 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2242 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2243 | |
| 2244 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2245 | |
| 2246 | __ JumpIfSmi(input, false_label); |
| 2247 | |
| 2248 | __ GetObjectType(input, scratch, scratch); |
| 2249 | EmitBranch(true_block, |
| 2250 | false_block, |
| 2251 | BranchCondition(instr->hydrogen()), |
| 2252 | scratch, |
| 2253 | Operand(TestType(instr->hydrogen()))); |
| 2254 | } |
| 2255 | |
| 2256 | |
| 2257 | void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2258 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2259 | Register result = ToRegister(instr->result()); |
| 2260 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2261 | __ AssertString(input); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2262 | |
| 2263 | __ lw(result, FieldMemOperand(input, String::kHashFieldOffset)); |
| 2264 | __ IndexFromHash(result, result); |
| 2265 | } |
| 2266 | |
| 2267 | |
| 2268 | void LCodeGen::DoHasCachedArrayIndexAndBranch( |
| 2269 | LHasCachedArrayIndexAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2270 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2271 | Register scratch = scratch0(); |
| 2272 | |
| 2273 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2274 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2275 | |
| 2276 | __ lw(scratch, |
| 2277 | FieldMemOperand(input, String::kHashFieldOffset)); |
| 2278 | __ And(at, scratch, Operand(String::kContainsCachedArrayIndexMask)); |
| 2279 | EmitBranch(true_block, false_block, eq, at, Operand(zero_reg)); |
| 2280 | } |
| 2281 | |
| 2282 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2283 | // Branches to a label or falls through with the answer in flags. Trashes |
| 2284 | // the temp registers, but not the input. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2285 | void LCodeGen::EmitClassOfTest(Label* is_true, |
| 2286 | Label* is_false, |
| 2287 | Handle<String>class_name, |
| 2288 | Register input, |
| 2289 | Register temp, |
| 2290 | Register temp2) { |
| 2291 | ASSERT(!input.is(temp)); |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2292 | ASSERT(!input.is(temp2)); |
| 2293 | ASSERT(!temp.is(temp2)); |
| 2294 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2295 | __ JumpIfSmi(input, is_false); |
| 2296 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2297 | if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Function"))) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2298 | // Assuming the following assertions, we can use the same compares to test |
| 2299 | // for both being a function type and being in the object type range. |
| 2300 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 2301 | STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2302 | FIRST_SPEC_OBJECT_TYPE + 1); |
| 2303 | STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2304 | LAST_SPEC_OBJECT_TYPE - 1); |
| 2305 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 2306 | |
| 2307 | __ GetObjectType(input, temp, temp2); |
| 2308 | __ Branch(is_false, lt, temp2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 2309 | __ Branch(is_true, eq, temp2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 2310 | __ Branch(is_true, eq, temp2, Operand(LAST_SPEC_OBJECT_TYPE)); |
| 2311 | } else { |
| 2312 | // Faster code path to avoid two compares: subtract lower bound from the |
| 2313 | // actual type and do a signed compare with the width of the type range. |
| 2314 | __ GetObjectType(input, temp, temp2); |
| 2315 | __ Subu(temp2, temp2, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2316 | __ Branch(is_false, gt, temp2, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
| 2317 | FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2318 | } |
| 2319 | |
| 2320 | // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
| 2321 | // Check if the constructor in the map is a function. |
| 2322 | __ lw(temp, FieldMemOperand(temp, Map::kConstructorOffset)); |
| 2323 | |
| 2324 | // Objects with a non-function constructor have class 'Object'. |
| 2325 | __ GetObjectType(temp, temp2, temp2); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2326 | if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Object"))) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2327 | __ Branch(is_true, ne, temp2, Operand(JS_FUNCTION_TYPE)); |
| 2328 | } else { |
| 2329 | __ Branch(is_false, ne, temp2, Operand(JS_FUNCTION_TYPE)); |
| 2330 | } |
| 2331 | |
| 2332 | // temp now contains the constructor function. Grab the |
| 2333 | // instance class name from there. |
| 2334 | __ lw(temp, FieldMemOperand(temp, JSFunction::kSharedFunctionInfoOffset)); |
| 2335 | __ lw(temp, FieldMemOperand(temp, |
| 2336 | SharedFunctionInfo::kInstanceClassNameOffset)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2337 | // The class name we are testing against is internalized since it's a literal. |
| 2338 | // The name in the constructor is internalized because of the way the context |
| 2339 | // 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] | 2340 | // 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] | 2341 | // syntax. Since both sides are internalized it is sufficient to use an |
| 2342 | // identity comparison. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2343 | |
| 2344 | // End with the address of this class_name instance in temp register. |
| 2345 | // On MIPS, the caller must do the comparison with Handle<String>class_name. |
| 2346 | } |
| 2347 | |
| 2348 | |
| 2349 | void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2350 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2351 | Register temp = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2352 | Register temp2 = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2353 | Handle<String> class_name = instr->hydrogen()->class_name(); |
| 2354 | |
| 2355 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2356 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2357 | |
| 2358 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 2359 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2360 | |
| 2361 | EmitClassOfTest(true_label, false_label, class_name, input, temp, temp2); |
| 2362 | |
| 2363 | EmitBranch(true_block, false_block, eq, temp, Operand(class_name)); |
| 2364 | } |
| 2365 | |
| 2366 | |
| 2367 | void LCodeGen::DoCmpMapAndBranch(LCmpMapAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2368 | Register reg = ToRegister(instr->value()); |
| 2369 | Register temp = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2370 | int true_block = instr->true_block_id(); |
| 2371 | int false_block = instr->false_block_id(); |
| 2372 | |
| 2373 | __ lw(temp, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 2374 | EmitBranch(true_block, false_block, eq, temp, Operand(instr->map())); |
| 2375 | } |
| 2376 | |
| 2377 | |
| 2378 | void LCodeGen::DoInstanceOf(LInstanceOf* instr) { |
| 2379 | Label true_label, done; |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2380 | ASSERT(ToRegister(instr->left()).is(a0)); // Object is in a0. |
| 2381 | ASSERT(ToRegister(instr->right()).is(a1)); // Function is in a1. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2382 | Register result = ToRegister(instr->result()); |
| 2383 | ASSERT(result.is(v0)); |
| 2384 | |
| 2385 | InstanceofStub stub(InstanceofStub::kArgsInRegisters); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2386 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2387 | |
| 2388 | __ Branch(&true_label, eq, result, Operand(zero_reg)); |
| 2389 | __ li(result, Operand(factory()->false_value())); |
| 2390 | __ Branch(&done); |
| 2391 | __ bind(&true_label); |
| 2392 | __ li(result, Operand(factory()->true_value())); |
| 2393 | __ bind(&done); |
| 2394 | } |
| 2395 | |
| 2396 | |
| 2397 | void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) { |
| 2398 | class DeferredInstanceOfKnownGlobal: public LDeferredCode { |
| 2399 | public: |
| 2400 | DeferredInstanceOfKnownGlobal(LCodeGen* codegen, |
| 2401 | LInstanceOfKnownGlobal* instr) |
| 2402 | : LDeferredCode(codegen), instr_(instr) { } |
| 2403 | virtual void Generate() { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2404 | codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2405 | } |
| 2406 | virtual LInstruction* instr() { return instr_; } |
| 2407 | Label* map_check() { return &map_check_; } |
| 2408 | |
| 2409 | private: |
| 2410 | LInstanceOfKnownGlobal* instr_; |
| 2411 | Label map_check_; |
| 2412 | }; |
| 2413 | |
| 2414 | DeferredInstanceOfKnownGlobal* deferred; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2415 | deferred = new(zone()) DeferredInstanceOfKnownGlobal(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2416 | |
| 2417 | Label done, false_result; |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2418 | Register object = ToRegister(instr->value()); |
| 2419 | Register temp = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2420 | Register result = ToRegister(instr->result()); |
| 2421 | |
| 2422 | ASSERT(object.is(a0)); |
| 2423 | ASSERT(result.is(v0)); |
| 2424 | |
| 2425 | // A Smi is not instance of anything. |
| 2426 | __ JumpIfSmi(object, &false_result); |
| 2427 | |
| 2428 | // This is the inlined call site instanceof cache. The two occurences of the |
| 2429 | // hole value will be patched to the last map/result pair generated by the |
| 2430 | // instanceof stub. |
| 2431 | Label cache_miss; |
| 2432 | Register map = temp; |
| 2433 | __ lw(map, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 2434 | |
| 2435 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| 2436 | __ bind(deferred->map_check()); // Label for calculating code patching. |
| 2437 | // We use Factory::the_hole_value() on purpose instead of loading from the |
| 2438 | // root array to force relocation to be able to later patch with |
| 2439 | // the cached map. |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 2440 | Handle<JSGlobalPropertyCell> cell = |
| 2441 | factory()->NewJSGlobalPropertyCell(factory()->the_hole_value()); |
| 2442 | __ li(at, Operand(Handle<Object>(cell))); |
| 2443 | __ lw(at, FieldMemOperand(at, JSGlobalPropertyCell::kValueOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2444 | __ Branch(&cache_miss, ne, map, Operand(at)); |
| 2445 | // We use Factory::the_hole_value() on purpose instead of loading from the |
| 2446 | // root array to force relocation to be able to later patch |
| 2447 | // with true or false. |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2448 | __ li(result, Operand(factory()->the_hole_value()), CONSTANT_SIZE); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2449 | __ Branch(&done); |
| 2450 | |
| 2451 | // The inlined call site cache did not match. Check null and string before |
| 2452 | // calling the deferred code. |
| 2453 | __ bind(&cache_miss); |
| 2454 | // Null is not instance of anything. |
| 2455 | __ LoadRoot(temp, Heap::kNullValueRootIndex); |
| 2456 | __ Branch(&false_result, eq, object, Operand(temp)); |
| 2457 | |
| 2458 | // String values is not instance of anything. |
| 2459 | Condition cc = __ IsObjectStringType(object, temp, temp); |
| 2460 | __ Branch(&false_result, cc, temp, Operand(zero_reg)); |
| 2461 | |
| 2462 | // Go to the deferred code. |
| 2463 | __ Branch(deferred->entry()); |
| 2464 | |
| 2465 | __ bind(&false_result); |
| 2466 | __ LoadRoot(result, Heap::kFalseValueRootIndex); |
| 2467 | |
| 2468 | // Here result has either true or false. Deferred code also produces true or |
| 2469 | // false object. |
| 2470 | __ bind(deferred->exit()); |
| 2471 | __ bind(&done); |
| 2472 | } |
| 2473 | |
| 2474 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2475 | void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr, |
| 2476 | Label* map_check) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2477 | Register result = ToRegister(instr->result()); |
| 2478 | ASSERT(result.is(v0)); |
| 2479 | |
| 2480 | InstanceofStub::Flags flags = InstanceofStub::kNoFlags; |
| 2481 | flags = static_cast<InstanceofStub::Flags>( |
| 2482 | flags | InstanceofStub::kArgsInRegisters); |
| 2483 | flags = static_cast<InstanceofStub::Flags>( |
| 2484 | flags | InstanceofStub::kCallSiteInlineCheck); |
| 2485 | flags = static_cast<InstanceofStub::Flags>( |
| 2486 | flags | InstanceofStub::kReturnTrueFalseObject); |
| 2487 | InstanceofStub stub(flags); |
| 2488 | |
| 2489 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 2490 | |
| 2491 | // Get the temp register reserved by the instruction. This needs to be t0 as |
| 2492 | // its slot of the pushing of safepoint registers is used to communicate the |
| 2493 | // offset to the location of the map check. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2494 | Register temp = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2495 | ASSERT(temp.is(t0)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2496 | __ LoadHeapObject(InstanceofStub::right(), instr->function()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2497 | static const int kAdditionalDelta = 7; |
| 2498 | int delta = masm_->InstructionsGeneratedSince(map_check) + kAdditionalDelta; |
| 2499 | Label before_push_delta; |
| 2500 | __ bind(&before_push_delta); |
| 2501 | { |
| 2502 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2503 | __ li(temp, Operand(delta * kPointerSize), CONSTANT_SIZE); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2504 | __ StoreToSafepointRegisterSlot(temp, temp); |
| 2505 | } |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2506 | CallCodeGeneric(stub.GetCode(isolate()), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2507 | RelocInfo::CODE_TARGET, |
| 2508 | instr, |
| 2509 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
danno@chromium.org | e4bfb26 | 2012-05-04 10:50:07 +0000 | [diff] [blame] | 2510 | LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment(); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2511 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2512 | // Put the result value into the result register slot and |
| 2513 | // restore all registers. |
| 2514 | __ StoreToSafepointRegisterSlot(result, result); |
| 2515 | } |
| 2516 | |
| 2517 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2518 | void LCodeGen::DoInstanceSize(LInstanceSize* instr) { |
| 2519 | Register object = ToRegister(instr->object()); |
| 2520 | Register result = ToRegister(instr->result()); |
| 2521 | __ lw(result, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 2522 | __ lbu(result, FieldMemOperand(result, Map::kInstanceSizeOffset)); |
| 2523 | } |
| 2524 | |
| 2525 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2526 | void LCodeGen::DoCmpT(LCmpT* instr) { |
| 2527 | Token::Value op = instr->op(); |
| 2528 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2529 | Handle<Code> ic = CompareIC::GetUninitialized(isolate(), op); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2530 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2531 | // On MIPS there is no need for a "no inlined smi code" marker (nop). |
| 2532 | |
| 2533 | Condition condition = ComputeCompareCondition(op); |
| 2534 | // A minor optimization that relies on LoadRoot always emitting one |
| 2535 | // instruction. |
| 2536 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm()); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2537 | Label done, check; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2538 | __ Branch(USE_DELAY_SLOT, &done, condition, v0, Operand(zero_reg)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2539 | __ bind(&check); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2540 | __ LoadRoot(ToRegister(instr->result()), Heap::kTrueValueRootIndex); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2541 | ASSERT_EQ(1, masm()->InstructionsGeneratedSince(&check)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2542 | __ LoadRoot(ToRegister(instr->result()), Heap::kFalseValueRootIndex); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2543 | __ bind(&done); |
| 2544 | } |
| 2545 | |
| 2546 | |
| 2547 | void LCodeGen::DoReturn(LReturn* instr) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2548 | if (FLAG_trace && info()->IsOptimizing()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2549 | // Push the return value on the stack as the parameter. |
| 2550 | // Runtime::TraceExit returns its parameter in v0. |
| 2551 | __ push(v0); |
| 2552 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 2553 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2554 | if (info()->saves_caller_doubles()) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 2555 | ASSERT(NeedsEagerFrame()); |
| 2556 | BitVector* doubles = chunk()->allocated_double_registers(); |
| 2557 | BitVector::Iterator save_iterator(doubles); |
| 2558 | int count = 0; |
| 2559 | while (!save_iterator.Done()) { |
| 2560 | __ ldc1(DoubleRegister::FromAllocationIndex(save_iterator.Current()), |
| 2561 | MemOperand(sp, count * kDoubleSize)); |
| 2562 | save_iterator.Advance(); |
| 2563 | count++; |
| 2564 | } |
| 2565 | } |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 2566 | int no_frame_start = -1; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2567 | if (NeedsEagerFrame()) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2568 | __ mov(sp, fp); |
| 2569 | __ Pop(ra, fp); |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 2570 | no_frame_start = masm_->pc_offset(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2571 | } |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 2572 | if (instr->has_constant_parameter_count()) { |
| 2573 | int parameter_count = ToInteger32(instr->constant_parameter_count()); |
| 2574 | int32_t sp_delta = (parameter_count + 1) * kPointerSize; |
| 2575 | if (sp_delta != 0) { |
| 2576 | __ Addu(sp, sp, Operand(sp_delta)); |
| 2577 | } |
| 2578 | } else { |
| 2579 | Register reg = ToRegister(instr->parameter_count()); |
| 2580 | // The argument count parameter is a smi |
| 2581 | __ SmiUntag(reg); |
| 2582 | __ sll(at, reg, kPointerSizeLog2); |
| 2583 | __ Addu(sp, sp, at); |
| 2584 | } |
| 2585 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2586 | __ Jump(ra); |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 2587 | |
| 2588 | if (no_frame_start != -1) { |
| 2589 | info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
| 2590 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2591 | } |
| 2592 | |
| 2593 | |
| 2594 | void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { |
| 2595 | Register result = ToRegister(instr->result()); |
| 2596 | __ li(at, Operand(Handle<Object>(instr->hydrogen()->cell()))); |
| 2597 | __ lw(result, FieldMemOperand(at, JSGlobalPropertyCell::kValueOffset)); |
| 2598 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2599 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| 2600 | DeoptimizeIf(eq, instr->environment(), result, Operand(at)); |
| 2601 | } |
| 2602 | } |
| 2603 | |
| 2604 | |
| 2605 | void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) { |
| 2606 | ASSERT(ToRegister(instr->global_object()).is(a0)); |
| 2607 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 2608 | |
| 2609 | __ li(a2, Operand(instr->name())); |
| 2610 | RelocInfo::Mode mode = instr->for_typeof() ? RelocInfo::CODE_TARGET |
| 2611 | : RelocInfo::CODE_TARGET_CONTEXT; |
| 2612 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2613 | CallCode(ic, mode, instr); |
| 2614 | } |
| 2615 | |
| 2616 | |
| 2617 | void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2618 | Register value = ToRegister(instr->value()); |
| 2619 | Register cell = scratch0(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2620 | |
| 2621 | // Load the cell. |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2622 | __ li(cell, Operand(instr->hydrogen()->cell())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2623 | |
| 2624 | // If the cell we are storing to contains the hole it could have |
| 2625 | // been deleted from the property dictionary. In that case, we need |
| 2626 | // to update the property details in the property dictionary to mark |
| 2627 | // it as no longer deleted. |
| 2628 | if (instr->hydrogen()->RequiresHoleCheck()) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2629 | // We use a temp to check the payload. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2630 | Register payload = ToRegister(instr->temp()); |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2631 | __ lw(payload, FieldMemOperand(cell, JSGlobalPropertyCell::kValueOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2632 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2633 | DeoptimizeIf(eq, instr->environment(), payload, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2634 | } |
| 2635 | |
| 2636 | // Store the value. |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2637 | __ sw(value, FieldMemOperand(cell, JSGlobalPropertyCell::kValueOffset)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2638 | // Cells are always rescanned, so no write barrier here. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2639 | } |
| 2640 | |
| 2641 | |
| 2642 | void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) { |
| 2643 | ASSERT(ToRegister(instr->global_object()).is(a1)); |
| 2644 | ASSERT(ToRegister(instr->value()).is(a0)); |
| 2645 | |
| 2646 | __ li(a2, Operand(instr->name())); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2647 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2648 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 2649 | : isolate()->builtins()->StoreIC_Initialize(); |
| 2650 | CallCode(ic, RelocInfo::CODE_TARGET_CONTEXT, instr); |
| 2651 | } |
| 2652 | |
| 2653 | |
| 2654 | void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
| 2655 | Register context = ToRegister(instr->context()); |
| 2656 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2657 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2658 | __ lw(result, ContextOperand(context, instr->slot_index())); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2659 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2660 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2661 | |
| 2662 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2663 | DeoptimizeIf(eq, instr->environment(), result, Operand(at)); |
| 2664 | } else { |
| 2665 | Label is_not_hole; |
| 2666 | __ Branch(&is_not_hole, ne, result, Operand(at)); |
| 2667 | __ LoadRoot(result, Heap::kUndefinedValueRootIndex); |
| 2668 | __ bind(&is_not_hole); |
| 2669 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2670 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2671 | } |
| 2672 | |
| 2673 | |
| 2674 | void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) { |
| 2675 | Register context = ToRegister(instr->context()); |
| 2676 | Register value = ToRegister(instr->value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2677 | Register scratch = scratch0(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2678 | MemOperand target = ContextOperand(context, instr->slot_index()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2679 | |
| 2680 | Label skip_assignment; |
| 2681 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2682 | if (instr->hydrogen()->RequiresHoleCheck()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2683 | __ lw(scratch, target); |
| 2684 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2685 | |
| 2686 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2687 | DeoptimizeIf(eq, instr->environment(), scratch, Operand(at)); |
| 2688 | } else { |
| 2689 | __ Branch(&skip_assignment, ne, scratch, Operand(at)); |
| 2690 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2691 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2692 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2693 | __ sw(value, target); |
| 2694 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 2695 | HType type = instr->hydrogen()->value()->type(); |
| 2696 | SmiCheck check_needed = |
| 2697 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
| 2698 | __ RecordWriteContextSlot(context, |
| 2699 | target.offset(), |
| 2700 | value, |
| 2701 | scratch0(), |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 2702 | GetRAState(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2703 | kSaveFPRegs, |
| 2704 | EMIT_REMEMBERED_SET, |
| 2705 | check_needed); |
| 2706 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2707 | |
| 2708 | __ bind(&skip_assignment); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2709 | } |
| 2710 | |
| 2711 | |
| 2712 | void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) { |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 2713 | HObjectAccess access = instr->hydrogen()->access(); |
| 2714 | int offset = access.offset(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2715 | Register object = ToRegister(instr->object()); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 2716 | if (instr->hydrogen()->representation().IsDouble()) { |
| 2717 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 2718 | __ ldc1(result, FieldMemOperand(object, offset)); |
| 2719 | return; |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 2720 | } |
| 2721 | |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 2722 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 2723 | if (access.IsInobject()) { |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 2724 | __ lw(result, FieldMemOperand(object, offset)); |
| 2725 | } else { |
| 2726 | __ lw(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
| 2727 | __ lw(result, FieldMemOperand(result, offset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2728 | } |
| 2729 | } |
| 2730 | |
| 2731 | |
| 2732 | void LCodeGen::EmitLoadFieldOrConstantFunction(Register result, |
| 2733 | Register object, |
| 2734 | Handle<Map> type, |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2735 | Handle<String> name, |
| 2736 | LEnvironment* env) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2737 | LookupResult lookup(isolate()); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 2738 | type->LookupDescriptor(NULL, *name, &lookup); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2739 | ASSERT(lookup.IsFound() || lookup.IsCacheable()); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2740 | if (lookup.IsField()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2741 | int index = lookup.GetLocalFieldIndexFromMap(*type); |
| 2742 | int offset = index * kPointerSize; |
| 2743 | if (index < 0) { |
| 2744 | // Negative property indices are in-object properties, indexed |
| 2745 | // from the end of the fixed part of the object. |
| 2746 | __ lw(result, FieldMemOperand(object, offset + type->instance_size())); |
| 2747 | } else { |
| 2748 | // Non-negative property indices are in the properties array. |
| 2749 | __ lw(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
| 2750 | __ lw(result, FieldMemOperand(result, offset + FixedArray::kHeaderSize)); |
| 2751 | } |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2752 | } else if (lookup.IsConstantFunction()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2753 | Handle<JSFunction> function(lookup.GetConstantFunctionFromMap(*type)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2754 | __ LoadHeapObject(result, function); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2755 | } else { |
| 2756 | // Negative lookup. |
| 2757 | // Check prototypes. |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2758 | Handle<HeapObject> current(HeapObject::cast((*type)->prototype())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2759 | Heap* heap = type->GetHeap(); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2760 | while (*current != heap->null_value()) { |
| 2761 | __ LoadHeapObject(result, current); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2762 | __ lw(result, FieldMemOperand(result, HeapObject::kMapOffset)); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2763 | DeoptimizeIf(ne, env, result, Operand(Handle<Map>(current->map()))); |
| 2764 | current = |
| 2765 | Handle<HeapObject>(HeapObject::cast(current->map()->prototype())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2766 | } |
| 2767 | __ LoadRoot(result, Heap::kUndefinedValueRootIndex); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2768 | } |
| 2769 | } |
| 2770 | |
| 2771 | |
| 2772 | void LCodeGen::DoLoadNamedFieldPolymorphic(LLoadNamedFieldPolymorphic* instr) { |
| 2773 | Register object = ToRegister(instr->object()); |
| 2774 | Register result = ToRegister(instr->result()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2775 | Register object_map = scratch0(); |
yangguo@chromium.org | 5f0b8ea | 2012-05-16 12:37:04 +0000 | [diff] [blame] | 2776 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2777 | int map_count = instr->hydrogen()->types()->length(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2778 | bool need_generic = instr->hydrogen()->need_generic(); |
| 2779 | |
| 2780 | if (map_count == 0 && !need_generic) { |
| 2781 | DeoptimizeIf(al, instr->environment()); |
| 2782 | return; |
| 2783 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2784 | Handle<String> name = instr->hydrogen()->name(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2785 | Label done; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2786 | __ lw(object_map, FieldMemOperand(object, HeapObject::kMapOffset)); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2787 | for (int i = 0; i < map_count; ++i) { |
| 2788 | bool last = (i == map_count - 1); |
| 2789 | Handle<Map> map = instr->hydrogen()->types()->at(i); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2790 | Label check_passed; |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 2791 | __ CompareMapAndBranch(object_map, map, &check_passed, eq, &check_passed); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2792 | if (last && !need_generic) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2793 | DeoptimizeIf(al, instr->environment()); |
| 2794 | __ bind(&check_passed); |
| 2795 | EmitLoadFieldOrConstantFunction( |
| 2796 | result, object, map, name, instr->environment()); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2797 | } else { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2798 | Label next; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2799 | __ Branch(&next); |
| 2800 | __ bind(&check_passed); |
| 2801 | EmitLoadFieldOrConstantFunction( |
| 2802 | result, object, map, name, instr->environment()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2803 | __ Branch(&done); |
| 2804 | __ bind(&next); |
| 2805 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2806 | } |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2807 | if (need_generic) { |
| 2808 | __ li(a2, Operand(name)); |
| 2809 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2810 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2811 | } |
| 2812 | __ bind(&done); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2813 | } |
| 2814 | |
| 2815 | |
| 2816 | void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) { |
| 2817 | ASSERT(ToRegister(instr->object()).is(a0)); |
| 2818 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 2819 | |
| 2820 | // Name is always in a2. |
| 2821 | __ li(a2, Operand(instr->name())); |
| 2822 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2823 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2824 | } |
| 2825 | |
| 2826 | |
| 2827 | void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) { |
| 2828 | Register scratch = scratch0(); |
| 2829 | Register function = ToRegister(instr->function()); |
| 2830 | Register result = ToRegister(instr->result()); |
| 2831 | |
| 2832 | // Check that the function really is a function. Load map into the |
| 2833 | // result register. |
| 2834 | __ GetObjectType(function, result, scratch); |
| 2835 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(JS_FUNCTION_TYPE)); |
| 2836 | |
| 2837 | // Make sure that the function has an instance prototype. |
| 2838 | Label non_instance; |
| 2839 | __ lbu(scratch, FieldMemOperand(result, Map::kBitFieldOffset)); |
| 2840 | __ And(scratch, scratch, Operand(1 << Map::kHasNonInstancePrototype)); |
| 2841 | __ Branch(&non_instance, ne, scratch, Operand(zero_reg)); |
| 2842 | |
| 2843 | // Get the prototype or initial map from the function. |
| 2844 | __ lw(result, |
| 2845 | FieldMemOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2846 | |
| 2847 | // Check that the function has a prototype or an initial map. |
| 2848 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| 2849 | DeoptimizeIf(eq, instr->environment(), result, Operand(at)); |
| 2850 | |
| 2851 | // If the function does not have an initial map, we're done. |
| 2852 | Label done; |
| 2853 | __ GetObjectType(result, scratch, scratch); |
| 2854 | __ Branch(&done, ne, scratch, Operand(MAP_TYPE)); |
| 2855 | |
| 2856 | // Get the prototype from the initial map. |
| 2857 | __ lw(result, FieldMemOperand(result, Map::kPrototypeOffset)); |
| 2858 | __ Branch(&done); |
| 2859 | |
| 2860 | // Non-instance prototype: Fetch prototype from constructor field |
| 2861 | // in initial map. |
| 2862 | __ bind(&non_instance); |
| 2863 | __ lw(result, FieldMemOperand(result, Map::kConstructorOffset)); |
| 2864 | |
| 2865 | // All done. |
| 2866 | __ bind(&done); |
| 2867 | } |
| 2868 | |
| 2869 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2870 | void LCodeGen::DoLoadExternalArrayPointer( |
| 2871 | LLoadExternalArrayPointer* instr) { |
| 2872 | Register to_reg = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2873 | Register from_reg = ToRegister(instr->object()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2874 | __ lw(to_reg, FieldMemOperand(from_reg, |
| 2875 | ExternalArray::kExternalPointerOffset)); |
| 2876 | } |
| 2877 | |
| 2878 | |
| 2879 | void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) { |
| 2880 | Register arguments = ToRegister(instr->arguments()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2881 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2882 | if (instr->length()->IsConstantOperand() && |
| 2883 | instr->index()->IsConstantOperand()) { |
| 2884 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 2885 | int const_length = ToInteger32(LConstantOperand::cast(instr->length())); |
| 2886 | int index = (const_length - const_index) + 1; |
| 2887 | __ lw(result, MemOperand(arguments, index * kPointerSize)); |
| 2888 | } else { |
| 2889 | Register length = ToRegister(instr->length()); |
| 2890 | Register index = ToRegister(instr->index()); |
| 2891 | // There are two words between the frame pointer and the last argument. |
| 2892 | // Subtracting from length accounts for one of them, add one more. |
| 2893 | __ subu(length, length, index); |
| 2894 | __ Addu(length, length, Operand(1)); |
| 2895 | __ sll(length, length, kPointerSizeLog2); |
| 2896 | __ Addu(at, arguments, Operand(length)); |
| 2897 | __ lw(result, MemOperand(at, 0)); |
| 2898 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2899 | } |
| 2900 | |
| 2901 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 2902 | void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) { |
| 2903 | Register external_pointer = ToRegister(instr->elements()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2904 | Register key = no_reg; |
| 2905 | ElementsKind elements_kind = instr->elements_kind(); |
| 2906 | bool key_is_constant = instr->key()->IsConstantOperand(); |
| 2907 | int constant_key = 0; |
| 2908 | if (key_is_constant) { |
| 2909 | constant_key = ToInteger32(LConstantOperand::cast(instr->key())); |
| 2910 | if (constant_key & 0xF0000000) { |
| 2911 | Abort("array index constant value too big."); |
| 2912 | } |
| 2913 | } else { |
| 2914 | key = ToRegister(instr->key()); |
| 2915 | } |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 2916 | int element_size_shift = ElementsKindToShiftSize(elements_kind); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 2917 | int shift_size = (instr->hydrogen()->key()->representation().IsSmi()) |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 2918 | ? (element_size_shift - kSmiTagSize) : element_size_shift; |
| 2919 | int additional_offset = instr->additional_index() << element_size_shift; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2920 | |
| 2921 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS || |
| 2922 | elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
| 2923 | FPURegister result = ToDoubleRegister(instr->result()); |
| 2924 | if (key_is_constant) { |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 2925 | __ Addu(scratch0(), external_pointer, constant_key << element_size_shift); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2926 | } else { |
| 2927 | __ sll(scratch0(), key, shift_size); |
| 2928 | __ Addu(scratch0(), scratch0(), external_pointer); |
| 2929 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2930 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
| 2931 | __ lwc1(result, MemOperand(scratch0(), additional_offset)); |
| 2932 | __ cvt_d_s(result, result); |
| 2933 | } else { // i.e. elements_kind == EXTERNAL_DOUBLE_ELEMENTS |
| 2934 | __ ldc1(result, MemOperand(scratch0(), additional_offset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2935 | } |
| 2936 | } else { |
| 2937 | Register result = ToRegister(instr->result()); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 2938 | MemOperand mem_operand = PrepareKeyedOperand( |
| 2939 | key, external_pointer, key_is_constant, constant_key, |
| 2940 | element_size_shift, shift_size, |
| 2941 | instr->additional_index(), additional_offset); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2942 | switch (elements_kind) { |
| 2943 | case EXTERNAL_BYTE_ELEMENTS: |
| 2944 | __ lb(result, mem_operand); |
| 2945 | break; |
| 2946 | case EXTERNAL_PIXEL_ELEMENTS: |
| 2947 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 2948 | __ lbu(result, mem_operand); |
| 2949 | break; |
| 2950 | case EXTERNAL_SHORT_ELEMENTS: |
| 2951 | __ lh(result, mem_operand); |
| 2952 | break; |
| 2953 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
| 2954 | __ lhu(result, mem_operand); |
| 2955 | break; |
| 2956 | case EXTERNAL_INT_ELEMENTS: |
| 2957 | __ lw(result, mem_operand); |
| 2958 | break; |
| 2959 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
| 2960 | __ lw(result, mem_operand); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 2961 | if (!instr->hydrogen()->CheckFlag(HInstruction::kUint32)) { |
| 2962 | DeoptimizeIf(Ugreater_equal, instr->environment(), |
| 2963 | result, Operand(0x80000000)); |
| 2964 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2965 | break; |
| 2966 | case EXTERNAL_FLOAT_ELEMENTS: |
| 2967 | case EXTERNAL_DOUBLE_ELEMENTS: |
| 2968 | case FAST_DOUBLE_ELEMENTS: |
| 2969 | case FAST_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2970 | case FAST_SMI_ELEMENTS: |
| 2971 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
| 2972 | case FAST_HOLEY_ELEMENTS: |
| 2973 | case FAST_HOLEY_SMI_ELEMENTS: |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 2974 | case DICTIONARY_ELEMENTS: |
| 2975 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
| 2976 | UNREACHABLE(); |
| 2977 | break; |
| 2978 | } |
| 2979 | } |
| 2980 | } |
| 2981 | |
| 2982 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 2983 | void LCodeGen::DoLoadKeyedFixedDoubleArray(LLoadKeyed* instr) { |
| 2984 | Register elements = ToRegister(instr->elements()); |
| 2985 | bool key_is_constant = instr->key()->IsConstantOperand(); |
| 2986 | Register key = no_reg; |
| 2987 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 2988 | Register scratch = scratch0(); |
| 2989 | |
| 2990 | int element_size_shift = ElementsKindToShiftSize(FAST_DOUBLE_ELEMENTS); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 2991 | int shift_size = (instr->hydrogen()->key()->representation().IsSmi()) |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 2992 | ? (element_size_shift - kSmiTagSize) : element_size_shift; |
| 2993 | int constant_key = 0; |
| 2994 | if (key_is_constant) { |
| 2995 | constant_key = ToInteger32(LConstantOperand::cast(instr->key())); |
| 2996 | if (constant_key & 0xF0000000) { |
| 2997 | Abort("array index constant value too big."); |
| 2998 | } |
| 2999 | } else { |
| 3000 | key = ToRegister(instr->key()); |
| 3001 | } |
| 3002 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3003 | int base_offset = (FixedDoubleArray::kHeaderSize - kHeapObjectTag) + |
| 3004 | ((constant_key + instr->additional_index()) << element_size_shift); |
| 3005 | if (!key_is_constant) { |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3006 | __ sll(scratch, key, shift_size); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3007 | __ Addu(elements, elements, scratch); |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3008 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3009 | __ Addu(elements, elements, Operand(base_offset)); |
| 3010 | __ ldc1(result, MemOperand(elements)); |
| 3011 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 3012 | __ lw(scratch, MemOperand(elements, sizeof(kHoleNanLower32))); |
| 3013 | DeoptimizeIf(eq, instr->environment(), scratch, Operand(kHoleNanUpper32)); |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3014 | } |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3015 | } |
| 3016 | |
| 3017 | |
| 3018 | void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) { |
| 3019 | Register elements = ToRegister(instr->elements()); |
| 3020 | Register result = ToRegister(instr->result()); |
| 3021 | Register scratch = scratch0(); |
| 3022 | Register store_base = scratch; |
| 3023 | int offset = 0; |
| 3024 | |
| 3025 | if (instr->key()->IsConstantOperand()) { |
| 3026 | LConstantOperand* const_operand = LConstantOperand::cast(instr->key()); |
| 3027 | offset = FixedArray::OffsetOfElementAt(ToInteger32(const_operand) + |
| 3028 | instr->additional_index()); |
| 3029 | store_base = elements; |
| 3030 | } else { |
| 3031 | Register key = EmitLoadRegister(instr->key(), scratch0()); |
| 3032 | // Even though the HLoadKeyed instruction forces the input |
| 3033 | // representation for the key to be an integer, the input gets replaced |
| 3034 | // during bound check elimination with the index argument to the bounds |
| 3035 | // 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] | 3036 | if (instr->hydrogen()->key()->representation().IsSmi()) { |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3037 | __ sll(scratch, key, kPointerSizeLog2 - kSmiTagSize); |
| 3038 | __ addu(scratch, elements, scratch); |
| 3039 | } else { |
| 3040 | __ sll(scratch, key, kPointerSizeLog2); |
| 3041 | __ addu(scratch, elements, scratch); |
| 3042 | } |
| 3043 | offset = FixedArray::OffsetOfElementAt(instr->additional_index()); |
| 3044 | } |
| 3045 | __ lw(result, FieldMemOperand(store_base, offset)); |
| 3046 | |
| 3047 | // Check for the hole value. |
| 3048 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 3049 | if (IsFastSmiElementsKind(instr->hydrogen()->elements_kind())) { |
| 3050 | __ And(scratch, result, Operand(kSmiTagMask)); |
| 3051 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(zero_reg)); |
| 3052 | } else { |
| 3053 | __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex); |
| 3054 | DeoptimizeIf(eq, instr->environment(), result, Operand(scratch)); |
| 3055 | } |
| 3056 | } |
| 3057 | } |
| 3058 | |
| 3059 | |
| 3060 | void LCodeGen::DoLoadKeyed(LLoadKeyed* instr) { |
| 3061 | if (instr->is_external()) { |
| 3062 | DoLoadKeyedExternalArray(instr); |
| 3063 | } else if (instr->hydrogen()->representation().IsDouble()) { |
| 3064 | DoLoadKeyedFixedDoubleArray(instr); |
| 3065 | } else { |
| 3066 | DoLoadKeyedFixedArray(instr); |
| 3067 | } |
| 3068 | } |
| 3069 | |
| 3070 | |
| 3071 | MemOperand LCodeGen::PrepareKeyedOperand(Register key, |
| 3072 | Register base, |
| 3073 | bool key_is_constant, |
| 3074 | int constant_key, |
| 3075 | int element_size, |
| 3076 | int shift_size, |
| 3077 | int additional_index, |
| 3078 | int additional_offset) { |
| 3079 | if (additional_index != 0 && !key_is_constant) { |
| 3080 | additional_index *= 1 << (element_size - shift_size); |
| 3081 | __ Addu(scratch0(), key, Operand(additional_index)); |
| 3082 | } |
| 3083 | |
| 3084 | if (key_is_constant) { |
| 3085 | return MemOperand(base, |
| 3086 | (constant_key << element_size) + additional_offset); |
| 3087 | } |
| 3088 | |
| 3089 | if (additional_index == 0) { |
| 3090 | if (shift_size >= 0) { |
| 3091 | __ sll(scratch0(), key, shift_size); |
| 3092 | __ Addu(scratch0(), base, scratch0()); |
| 3093 | return MemOperand(scratch0()); |
| 3094 | } else { |
| 3095 | ASSERT_EQ(-1, shift_size); |
| 3096 | __ srl(scratch0(), key, 1); |
| 3097 | __ Addu(scratch0(), base, scratch0()); |
| 3098 | return MemOperand(scratch0()); |
| 3099 | } |
| 3100 | } |
| 3101 | |
| 3102 | if (shift_size >= 0) { |
| 3103 | __ sll(scratch0(), scratch0(), shift_size); |
| 3104 | __ Addu(scratch0(), base, scratch0()); |
| 3105 | return MemOperand(scratch0()); |
| 3106 | } else { |
| 3107 | ASSERT_EQ(-1, shift_size); |
| 3108 | __ srl(scratch0(), scratch0(), 1); |
| 3109 | __ Addu(scratch0(), base, scratch0()); |
| 3110 | return MemOperand(scratch0()); |
| 3111 | } |
| 3112 | } |
| 3113 | |
| 3114 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3115 | void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) { |
| 3116 | ASSERT(ToRegister(instr->object()).is(a1)); |
| 3117 | ASSERT(ToRegister(instr->key()).is(a0)); |
| 3118 | |
| 3119 | Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize(); |
| 3120 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 3121 | } |
| 3122 | |
| 3123 | |
| 3124 | void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) { |
| 3125 | Register scratch = scratch0(); |
| 3126 | Register temp = scratch1(); |
| 3127 | Register result = ToRegister(instr->result()); |
| 3128 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3129 | if (instr->hydrogen()->from_inlined()) { |
| 3130 | __ Subu(result, sp, 2 * kPointerSize); |
| 3131 | } else { |
| 3132 | // Check if the calling frame is an arguments adaptor frame. |
| 3133 | Label done, adapted; |
| 3134 | __ lw(scratch, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 3135 | __ lw(result, MemOperand(scratch, StandardFrameConstants::kContextOffset)); |
| 3136 | __ Xor(temp, result, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3137 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3138 | // Result is the frame pointer for the frame if not adapted and for the real |
| 3139 | // frame below the adaptor frame if adapted. |
| 3140 | __ Movn(result, fp, temp); // Move only if temp is not equal to zero (ne). |
| 3141 | __ Movz(result, scratch, temp); // Move only if temp is equal to zero (eq). |
| 3142 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3143 | } |
| 3144 | |
| 3145 | |
| 3146 | void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3147 | Register elem = ToRegister(instr->elements()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3148 | Register result = ToRegister(instr->result()); |
| 3149 | |
| 3150 | Label done; |
| 3151 | |
| 3152 | // If no arguments adaptor frame the number of arguments is fixed. |
| 3153 | __ Addu(result, zero_reg, Operand(scope()->num_parameters())); |
| 3154 | __ Branch(&done, eq, fp, Operand(elem)); |
| 3155 | |
| 3156 | // Arguments adaptor frame present. Get argument length from there. |
| 3157 | __ lw(result, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 3158 | __ lw(result, |
| 3159 | MemOperand(result, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 3160 | __ SmiUntag(result); |
| 3161 | |
| 3162 | // Argument length is in result register. |
| 3163 | __ bind(&done); |
| 3164 | } |
| 3165 | |
| 3166 | |
rossberg@chromium.org | 2c067b1 | 2012-03-19 11:01:52 +0000 | [diff] [blame] | 3167 | void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3168 | Register receiver = ToRegister(instr->receiver()); |
| 3169 | Register function = ToRegister(instr->function()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3170 | Register scratch = scratch0(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3171 | |
| 3172 | // If the receiver is null or undefined, we have to pass the global |
| 3173 | // object as a receiver to normal functions. Values have to be |
| 3174 | // passed unchanged to builtins and strict-mode functions. |
| 3175 | Label global_object, receiver_ok; |
| 3176 | |
| 3177 | // Do not transform the receiver to object for strict mode |
| 3178 | // functions. |
| 3179 | __ lw(scratch, |
| 3180 | FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 3181 | __ lw(scratch, |
| 3182 | FieldMemOperand(scratch, SharedFunctionInfo::kCompilerHintsOffset)); |
| 3183 | |
| 3184 | // Do not transform the receiver to object for builtins. |
| 3185 | int32_t strict_mode_function_mask = |
| 3186 | 1 << (SharedFunctionInfo::kStrictModeFunction + kSmiTagSize); |
| 3187 | int32_t native_mask = 1 << (SharedFunctionInfo::kNative + kSmiTagSize); |
| 3188 | __ And(scratch, scratch, Operand(strict_mode_function_mask | native_mask)); |
| 3189 | __ Branch(&receiver_ok, ne, scratch, Operand(zero_reg)); |
| 3190 | |
| 3191 | // Normal function. Replace undefined or null with global receiver. |
| 3192 | __ LoadRoot(scratch, Heap::kNullValueRootIndex); |
| 3193 | __ Branch(&global_object, eq, receiver, Operand(scratch)); |
| 3194 | __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 3195 | __ Branch(&global_object, eq, receiver, Operand(scratch)); |
| 3196 | |
| 3197 | // Deoptimize if the receiver is not a JS object. |
| 3198 | __ And(scratch, receiver, Operand(kSmiTagMask)); |
| 3199 | DeoptimizeIf(eq, instr->environment(), scratch, Operand(zero_reg)); |
| 3200 | |
| 3201 | __ GetObjectType(receiver, scratch, scratch); |
| 3202 | DeoptimizeIf(lt, instr->environment(), |
| 3203 | scratch, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 3204 | __ Branch(&receiver_ok); |
| 3205 | |
| 3206 | __ bind(&global_object); |
| 3207 | __ lw(receiver, GlobalObjectOperand()); |
| 3208 | __ lw(receiver, |
| 3209 | FieldMemOperand(receiver, JSGlobalObject::kGlobalReceiverOffset)); |
| 3210 | __ bind(&receiver_ok); |
rossberg@chromium.org | 2c067b1 | 2012-03-19 11:01:52 +0000 | [diff] [blame] | 3211 | } |
| 3212 | |
| 3213 | void LCodeGen::DoApplyArguments(LApplyArguments* instr) { |
| 3214 | Register receiver = ToRegister(instr->receiver()); |
| 3215 | Register function = ToRegister(instr->function()); |
| 3216 | Register length = ToRegister(instr->length()); |
| 3217 | Register elements = ToRegister(instr->elements()); |
| 3218 | Register scratch = scratch0(); |
| 3219 | ASSERT(receiver.is(a0)); // Used for parameter count. |
| 3220 | ASSERT(function.is(a1)); // Required by InvokeFunction. |
| 3221 | ASSERT(ToRegister(instr->result()).is(v0)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3222 | |
| 3223 | // Copy the arguments to this function possibly from the |
| 3224 | // adaptor frame below it. |
| 3225 | const uint32_t kArgumentsLimit = 1 * KB; |
| 3226 | DeoptimizeIf(hi, instr->environment(), length, Operand(kArgumentsLimit)); |
| 3227 | |
| 3228 | // Push the receiver and use the register to keep the original |
| 3229 | // number of arguments. |
| 3230 | __ push(receiver); |
| 3231 | __ Move(receiver, length); |
| 3232 | // The arguments are at a one pointer size offset from elements. |
| 3233 | __ Addu(elements, elements, Operand(1 * kPointerSize)); |
| 3234 | |
| 3235 | // Loop through the arguments pushing them onto the execution |
| 3236 | // stack. |
| 3237 | Label invoke, loop; |
| 3238 | // length is a small non-negative integer, due to the test above. |
| 3239 | __ Branch(USE_DELAY_SLOT, &invoke, eq, length, Operand(zero_reg)); |
| 3240 | __ sll(scratch, length, 2); |
| 3241 | __ bind(&loop); |
| 3242 | __ Addu(scratch, elements, scratch); |
| 3243 | __ lw(scratch, MemOperand(scratch)); |
| 3244 | __ push(scratch); |
| 3245 | __ Subu(length, length, Operand(1)); |
| 3246 | __ Branch(USE_DELAY_SLOT, &loop, ne, length, Operand(zero_reg)); |
| 3247 | __ sll(scratch, length, 2); |
| 3248 | |
| 3249 | __ bind(&invoke); |
danno@chromium.org | e4bfb26 | 2012-05-04 10:50:07 +0000 | [diff] [blame] | 3250 | ASSERT(instr->HasPointerMap()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3251 | LPointerMap* pointers = instr->pointer_map(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3252 | RecordPosition(pointers->position()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 3253 | SafepointGenerator safepoint_generator( |
| 3254 | this, pointers, Safepoint::kLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3255 | // The number of arguments is stored in receiver which is a0, as expected |
| 3256 | // by InvokeFunction. |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3257 | ParameterCount actual(receiver); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3258 | __ InvokeFunction(function, actual, CALL_FUNCTION, |
| 3259 | safepoint_generator, CALL_AS_METHOD); |
| 3260 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3261 | } |
| 3262 | |
| 3263 | |
| 3264 | void LCodeGen::DoPushArgument(LPushArgument* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3265 | LOperand* argument = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3266 | if (argument->IsDoubleRegister() || argument->IsDoubleStackSlot()) { |
| 3267 | Abort("DoPushArgument not implemented for double type."); |
| 3268 | } else { |
| 3269 | Register argument_reg = EmitLoadRegister(argument, at); |
| 3270 | __ push(argument_reg); |
| 3271 | } |
| 3272 | } |
| 3273 | |
| 3274 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3275 | void LCodeGen::DoDrop(LDrop* instr) { |
| 3276 | __ Drop(instr->count()); |
| 3277 | } |
| 3278 | |
| 3279 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3280 | void LCodeGen::DoThisFunction(LThisFunction* instr) { |
| 3281 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 3282 | __ lw(result, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3283 | } |
| 3284 | |
| 3285 | |
| 3286 | void LCodeGen::DoContext(LContext* instr) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 3287 | // 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] | 3288 | Register result = ToRegister(instr->result()); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 3289 | for (HUseIterator it(instr->hydrogen()->uses()); !it.Done(); it.Advance()) { |
| 3290 | if (!it.value()->IsReturn()) { |
| 3291 | __ mov(result, cp); |
| 3292 | return; |
| 3293 | } |
| 3294 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3295 | } |
| 3296 | |
| 3297 | |
| 3298 | void LCodeGen::DoOuterContext(LOuterContext* instr) { |
| 3299 | Register context = ToRegister(instr->context()); |
| 3300 | Register result = ToRegister(instr->result()); |
| 3301 | __ lw(result, |
| 3302 | MemOperand(context, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
| 3303 | } |
| 3304 | |
| 3305 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 3306 | void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) { |
| 3307 | __ LoadHeapObject(scratch0(), instr->hydrogen()->pairs()); |
| 3308 | __ li(scratch1(), Operand(Smi::FromInt(instr->hydrogen()->flags()))); |
| 3309 | // The context is the first argument. |
| 3310 | __ Push(cp, scratch0(), scratch1()); |
| 3311 | CallRuntime(Runtime::kDeclareGlobals, 3, instr); |
| 3312 | } |
| 3313 | |
| 3314 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3315 | void LCodeGen::DoGlobalObject(LGlobalObject* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3316 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3317 | __ lw(result, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3318 | } |
| 3319 | |
| 3320 | |
| 3321 | void LCodeGen::DoGlobalReceiver(LGlobalReceiver* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3322 | Register global = ToRegister(instr->global_object()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3323 | Register result = ToRegister(instr->result()); |
| 3324 | __ lw(result, FieldMemOperand(global, GlobalObject::kGlobalReceiverOffset)); |
| 3325 | } |
| 3326 | |
| 3327 | |
| 3328 | void LCodeGen::CallKnownFunction(Handle<JSFunction> function, |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3329 | int formal_parameter_count, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3330 | int arity, |
| 3331 | LInstruction* instr, |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3332 | CallKind call_kind, |
| 3333 | A1State a1_state) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3334 | bool dont_adapt_arguments = |
| 3335 | formal_parameter_count == SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 3336 | bool can_invoke_directly = |
| 3337 | dont_adapt_arguments || formal_parameter_count == arity; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3338 | |
| 3339 | LPointerMap* pointers = instr->pointer_map(); |
| 3340 | RecordPosition(pointers->position()); |
| 3341 | |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3342 | if (can_invoke_directly) { |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3343 | if (a1_state == A1_UNINITIALIZED) { |
| 3344 | __ LoadHeapObject(a1, function); |
| 3345 | } |
| 3346 | |
verwaest@chromium.org | b6d052d | 2012-07-27 08:03:27 +0000 | [diff] [blame] | 3347 | // Change context. |
| 3348 | __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3349 | |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3350 | // Set r0 to arguments count if adaption is not needed. Assumes that r0 |
| 3351 | // is available to write to at this point. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3352 | if (dont_adapt_arguments) { |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3353 | __ li(a0, Operand(arity)); |
| 3354 | } |
| 3355 | |
| 3356 | // Invoke function. |
| 3357 | __ SetCallKind(t1, call_kind); |
| 3358 | __ lw(at, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
| 3359 | __ Call(at); |
| 3360 | |
| 3361 | // Set up deoptimization. |
| 3362 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
| 3363 | } else { |
| 3364 | SafepointGenerator generator(this, pointers, Safepoint::kLazyDeopt); |
| 3365 | ParameterCount count(arity); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3366 | ParameterCount expected(formal_parameter_count); |
| 3367 | __ InvokeFunction( |
| 3368 | function, expected, count, CALL_FUNCTION, generator, call_kind); |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 3369 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3370 | |
| 3371 | // Restore context. |
| 3372 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3373 | } |
| 3374 | |
| 3375 | |
| 3376 | void LCodeGen::DoCallConstantFunction(LCallConstantFunction* instr) { |
| 3377 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3378 | __ mov(a0, v0); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3379 | CallKnownFunction(instr->hydrogen()->function(), |
| 3380 | instr->hydrogen()->formal_parameter_count(), |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3381 | instr->arity(), |
| 3382 | instr, |
| 3383 | CALL_AS_METHOD, |
| 3384 | A1_UNINITIALIZED); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3385 | } |
| 3386 | |
| 3387 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3388 | void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3389 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3390 | Register result = ToRegister(instr->result()); |
| 3391 | Register scratch = scratch0(); |
| 3392 | |
| 3393 | // Deoptimize if not a heap number. |
| 3394 | __ lw(scratch, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 3395 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 3396 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(at)); |
| 3397 | |
| 3398 | Label done; |
| 3399 | Register exponent = scratch0(); |
| 3400 | scratch = no_reg; |
| 3401 | __ lw(exponent, FieldMemOperand(input, HeapNumber::kExponentOffset)); |
| 3402 | // Check the sign of the argument. If the argument is positive, just |
| 3403 | // return it. |
| 3404 | __ Move(result, input); |
| 3405 | __ And(at, exponent, Operand(HeapNumber::kSignMask)); |
| 3406 | __ Branch(&done, eq, at, Operand(zero_reg)); |
| 3407 | |
| 3408 | // Input is negative. Reverse its sign. |
| 3409 | // Preserve the value of all registers. |
| 3410 | { |
| 3411 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 3412 | |
| 3413 | // Registers were saved at the safepoint, so we can use |
| 3414 | // many scratch registers. |
| 3415 | Register tmp1 = input.is(a1) ? a0 : a1; |
| 3416 | Register tmp2 = input.is(a2) ? a0 : a2; |
| 3417 | Register tmp3 = input.is(a3) ? a0 : a3; |
| 3418 | Register tmp4 = input.is(t0) ? a0 : t0; |
| 3419 | |
| 3420 | // exponent: floating point exponent value. |
| 3421 | |
| 3422 | Label allocated, slow; |
| 3423 | __ LoadRoot(tmp4, Heap::kHeapNumberMapRootIndex); |
| 3424 | __ AllocateHeapNumber(tmp1, tmp2, tmp3, tmp4, &slow); |
| 3425 | __ Branch(&allocated); |
| 3426 | |
| 3427 | // Slow case: Call the runtime system to do the number allocation. |
| 3428 | __ bind(&slow); |
| 3429 | |
| 3430 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, instr); |
| 3431 | // Set the pointer to the new heap number in tmp. |
| 3432 | if (!tmp1.is(v0)) |
| 3433 | __ mov(tmp1, v0); |
| 3434 | // Restore input_reg after call to runtime. |
| 3435 | __ LoadFromSafepointRegisterSlot(input, input); |
| 3436 | __ lw(exponent, FieldMemOperand(input, HeapNumber::kExponentOffset)); |
| 3437 | |
| 3438 | __ bind(&allocated); |
| 3439 | // exponent: floating point exponent value. |
| 3440 | // tmp1: allocated heap number. |
| 3441 | __ And(exponent, exponent, Operand(~HeapNumber::kSignMask)); |
| 3442 | __ sw(exponent, FieldMemOperand(tmp1, HeapNumber::kExponentOffset)); |
| 3443 | __ lw(tmp2, FieldMemOperand(input, HeapNumber::kMantissaOffset)); |
| 3444 | __ sw(tmp2, FieldMemOperand(tmp1, HeapNumber::kMantissaOffset)); |
| 3445 | |
| 3446 | __ StoreToSafepointRegisterSlot(tmp1, result); |
| 3447 | } |
| 3448 | |
| 3449 | __ bind(&done); |
| 3450 | } |
| 3451 | |
| 3452 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3453 | void LCodeGen::EmitIntegerMathAbs(LMathAbs* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3454 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3455 | Register result = ToRegister(instr->result()); |
| 3456 | Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| 3457 | Label done; |
| 3458 | __ Branch(USE_DELAY_SLOT, &done, ge, input, Operand(zero_reg)); |
| 3459 | __ mov(result, input); |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3460 | // Overflow if result is still negative, i.e. 0x80000000. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3461 | DeoptimizeIf(lt, instr->environment(), result, Operand(zero_reg)); |
| 3462 | __ bind(&done); |
| 3463 | } |
| 3464 | |
| 3465 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3466 | void LCodeGen::DoMathAbs(LMathAbs* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3467 | // Class for deferred case. |
| 3468 | class DeferredMathAbsTaggedHeapNumber: public LDeferredCode { |
| 3469 | public: |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3470 | DeferredMathAbsTaggedHeapNumber(LCodeGen* codegen, LMathAbs* instr) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3471 | : LDeferredCode(codegen), instr_(instr) { } |
| 3472 | virtual void Generate() { |
| 3473 | codegen()->DoDeferredMathAbsTaggedHeapNumber(instr_); |
| 3474 | } |
| 3475 | virtual LInstruction* instr() { return instr_; } |
| 3476 | private: |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3477 | LMathAbs* instr_; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3478 | }; |
| 3479 | |
| 3480 | Representation r = instr->hydrogen()->value()->representation(); |
| 3481 | if (r.IsDouble()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3482 | FPURegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3483 | FPURegister result = ToDoubleRegister(instr->result()); |
| 3484 | __ abs_d(result, input); |
| 3485 | } else if (r.IsInteger32()) { |
| 3486 | EmitIntegerMathAbs(instr); |
| 3487 | } else { |
| 3488 | // Representation is tagged. |
| 3489 | DeferredMathAbsTaggedHeapNumber* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3490 | new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3491 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3492 | // Smi check. |
| 3493 | __ JumpIfNotSmi(input, deferred->entry()); |
| 3494 | // If smi, handle it directly. |
| 3495 | EmitIntegerMathAbs(instr); |
| 3496 | __ bind(deferred->exit()); |
| 3497 | } |
| 3498 | } |
| 3499 | |
| 3500 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3501 | void LCodeGen::DoMathFloor(LMathFloor* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3502 | DoubleRegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3503 | Register result = ToRegister(instr->result()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3504 | Register scratch1 = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3505 | Register except_flag = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3506 | |
| 3507 | __ EmitFPUTruncate(kRoundToMinusInf, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3508 | result, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3509 | input, |
| 3510 | scratch1, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3511 | double_scratch0(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3512 | except_flag); |
| 3513 | |
| 3514 | // Deopt if the operation did not succeed. |
| 3515 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
| 3516 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3517 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3518 | // Test for -0. |
| 3519 | Label done; |
| 3520 | __ Branch(&done, ne, result, Operand(zero_reg)); |
| 3521 | __ mfc1(scratch1, input.high()); |
| 3522 | __ And(scratch1, scratch1, Operand(HeapNumber::kSignMask)); |
| 3523 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(zero_reg)); |
| 3524 | __ bind(&done); |
| 3525 | } |
| 3526 | } |
| 3527 | |
| 3528 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3529 | void LCodeGen::DoMathRound(LMathRound* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3530 | DoubleRegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3531 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3532 | DoubleRegister double_scratch1 = ToDoubleRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3533 | Register scratch = scratch0(); |
| 3534 | Label done, check_sign_on_zero; |
| 3535 | |
| 3536 | // Extract exponent bits. |
| 3537 | __ mfc1(result, input.high()); |
| 3538 | __ Ext(scratch, |
| 3539 | result, |
| 3540 | HeapNumber::kExponentShift, |
| 3541 | HeapNumber::kExponentBits); |
| 3542 | |
| 3543 | // If the number is in ]-0.5, +0.5[, the result is +/- 0. |
| 3544 | Label skip1; |
| 3545 | __ Branch(&skip1, gt, scratch, Operand(HeapNumber::kExponentBias - 2)); |
| 3546 | __ mov(result, zero_reg); |
| 3547 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3548 | __ Branch(&check_sign_on_zero); |
| 3549 | } else { |
| 3550 | __ Branch(&done); |
| 3551 | } |
| 3552 | __ bind(&skip1); |
| 3553 | |
| 3554 | // The following conversion will not work with numbers |
| 3555 | // outside of ]-2^32, 2^32[. |
| 3556 | DeoptimizeIf(ge, instr->environment(), scratch, |
| 3557 | Operand(HeapNumber::kExponentBias + 32)); |
| 3558 | |
| 3559 | // Save the original sign for later comparison. |
| 3560 | __ And(scratch, result, Operand(HeapNumber::kSignMask)); |
| 3561 | |
| 3562 | __ Move(double_scratch0(), 0.5); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3563 | __ add_d(double_scratch0(), input, double_scratch0()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3564 | |
| 3565 | // Check sign of the result: if the sign changed, the input |
| 3566 | // 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] | 3567 | __ mfc1(result, double_scratch0().high()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3568 | __ Xor(result, result, Operand(scratch)); |
| 3569 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3570 | // ARM uses 'mi' here, which is 'lt' |
| 3571 | DeoptimizeIf(lt, instr->environment(), result, |
| 3572 | Operand(zero_reg)); |
| 3573 | } else { |
| 3574 | Label skip2; |
| 3575 | // ARM uses 'mi' here, which is 'lt' |
| 3576 | // Negating it results in 'ge' |
| 3577 | __ Branch(&skip2, ge, result, Operand(zero_reg)); |
| 3578 | __ mov(result, zero_reg); |
| 3579 | __ Branch(&done); |
| 3580 | __ bind(&skip2); |
| 3581 | } |
| 3582 | |
| 3583 | Register except_flag = scratch; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3584 | __ EmitFPUTruncate(kRoundToMinusInf, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3585 | result, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3586 | double_scratch0(), |
| 3587 | at, |
| 3588 | double_scratch1, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3589 | except_flag); |
| 3590 | |
| 3591 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
| 3592 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3593 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3594 | // Test for -0. |
| 3595 | __ Branch(&done, ne, result, Operand(zero_reg)); |
| 3596 | __ bind(&check_sign_on_zero); |
| 3597 | __ mfc1(scratch, input.high()); |
| 3598 | __ And(scratch, scratch, Operand(HeapNumber::kSignMask)); |
| 3599 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(zero_reg)); |
| 3600 | } |
| 3601 | __ bind(&done); |
| 3602 | } |
| 3603 | |
| 3604 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3605 | void LCodeGen::DoMathSqrt(LMathSqrt* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3606 | DoubleRegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3607 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 3608 | __ sqrt_d(result, input); |
| 3609 | } |
| 3610 | |
| 3611 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3612 | void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3613 | DoubleRegister input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3614 | DoubleRegister result = ToDoubleRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3615 | DoubleRegister temp = ToDoubleRegister(instr->temp()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3616 | |
| 3617 | ASSERT(!input.is(result)); |
| 3618 | |
| 3619 | // Note that according to ECMA-262 15.8.2.13: |
| 3620 | // Math.pow(-Infinity, 0.5) == Infinity |
| 3621 | // Math.sqrt(-Infinity) == NaN |
| 3622 | Label done; |
| 3623 | __ Move(temp, -V8_INFINITY); |
| 3624 | __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, temp, input); |
| 3625 | // Set up Infinity in the delay slot. |
| 3626 | // result is overwritten if the branch is not taken. |
| 3627 | __ neg_d(result, temp); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3628 | |
| 3629 | // Add +0 to convert -0 to +0. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3630 | __ add_d(result, input, kDoubleRegZero); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3631 | __ sqrt_d(result, result); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3632 | __ bind(&done); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3633 | } |
| 3634 | |
| 3635 | |
| 3636 | void LCodeGen::DoPower(LPower* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3637 | Representation exponent_type = instr->hydrogen()->right()->representation(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3638 | // Having marked this as a call, we can use any registers. |
| 3639 | // 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] | 3640 | ASSERT(!instr->right()->IsDoubleRegister() || |
| 3641 | ToDoubleRegister(instr->right()).is(f4)); |
| 3642 | ASSERT(!instr->right()->IsRegister() || |
| 3643 | ToRegister(instr->right()).is(a2)); |
| 3644 | ASSERT(ToDoubleRegister(instr->left()).is(f2)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3645 | ASSERT(ToDoubleRegister(instr->result()).is(f0)); |
| 3646 | |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 3647 | if (exponent_type.IsSmi()) { |
| 3648 | MathPowStub stub(MathPowStub::TAGGED); |
| 3649 | __ CallStub(&stub); |
| 3650 | } else if (exponent_type.IsTagged()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3651 | Label no_deopt; |
| 3652 | __ JumpIfSmi(a2, &no_deopt); |
| 3653 | __ lw(t3, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 3654 | DeoptimizeIf(ne, instr->environment(), t3, Operand(at)); |
| 3655 | __ bind(&no_deopt); |
| 3656 | MathPowStub stub(MathPowStub::TAGGED); |
| 3657 | __ CallStub(&stub); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3658 | } else if (exponent_type.IsInteger32()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3659 | MathPowStub stub(MathPowStub::INTEGER); |
| 3660 | __ CallStub(&stub); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3661 | } else { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3662 | ASSERT(exponent_type.IsDouble()); |
| 3663 | MathPowStub stub(MathPowStub::DOUBLE); |
| 3664 | __ CallStub(&stub); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3665 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3666 | } |
| 3667 | |
| 3668 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3669 | void LCodeGen::DoRandom(LRandom* instr) { |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3670 | class DeferredDoRandom: public LDeferredCode { |
| 3671 | public: |
| 3672 | DeferredDoRandom(LCodeGen* codegen, LRandom* instr) |
| 3673 | : LDeferredCode(codegen), instr_(instr) { } |
| 3674 | virtual void Generate() { codegen()->DoDeferredRandom(instr_); } |
| 3675 | virtual LInstruction* instr() { return instr_; } |
| 3676 | private: |
| 3677 | LRandom* instr_; |
| 3678 | }; |
| 3679 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3680 | DeferredDoRandom* deferred = new(zone()) DeferredDoRandom(this, instr); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3681 | // Having marked this instruction as a call we can use any |
| 3682 | // registers. |
| 3683 | ASSERT(ToDoubleRegister(instr->result()).is(f0)); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3684 | ASSERT(ToRegister(instr->global_object()).is(a0)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3685 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3686 | static const int kSeedSize = sizeof(uint32_t); |
| 3687 | STATIC_ASSERT(kPointerSize == kSeedSize); |
| 3688 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3689 | __ lw(a0, FieldMemOperand(a0, GlobalObject::kNativeContextOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3690 | static const int kRandomSeedOffset = |
| 3691 | FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize; |
| 3692 | __ lw(a2, FieldMemOperand(a0, kRandomSeedOffset)); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3693 | // a2: FixedArray of the native context's random seeds |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3694 | |
| 3695 | // Load state[0]. |
| 3696 | __ lw(a1, FieldMemOperand(a2, ByteArray::kHeaderSize)); |
| 3697 | __ Branch(deferred->entry(), eq, a1, Operand(zero_reg)); |
| 3698 | // Load state[1]. |
| 3699 | __ lw(a0, FieldMemOperand(a2, ByteArray::kHeaderSize + kSeedSize)); |
| 3700 | // a1: state[0]. |
| 3701 | // a0: state[1]. |
| 3702 | |
| 3703 | // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16) |
| 3704 | __ And(a3, a1, Operand(0xFFFF)); |
| 3705 | __ li(t0, Operand(18273)); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3706 | __ Mul(a3, a3, t0); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3707 | __ srl(a1, a1, 16); |
| 3708 | __ Addu(a1, a3, a1); |
| 3709 | // Save state[0]. |
| 3710 | __ sw(a1, FieldMemOperand(a2, ByteArray::kHeaderSize)); |
| 3711 | |
| 3712 | // state[1] = 36969 * (state[1] & 0xFFFF) + (state[1] >> 16) |
| 3713 | __ And(a3, a0, Operand(0xFFFF)); |
| 3714 | __ li(t0, Operand(36969)); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3715 | __ Mul(a3, a3, t0); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3716 | __ srl(a0, a0, 16), |
| 3717 | __ Addu(a0, a3, a0); |
| 3718 | // Save state[1]. |
| 3719 | __ sw(a0, FieldMemOperand(a2, ByteArray::kHeaderSize + kSeedSize)); |
| 3720 | |
| 3721 | // Random bit pattern = (state[0] << 14) + (state[1] & 0x3FFFF) |
| 3722 | __ And(a0, a0, Operand(0x3FFFF)); |
| 3723 | __ sll(a1, a1, 14); |
| 3724 | __ Addu(v0, a0, a1); |
| 3725 | |
| 3726 | __ bind(deferred->exit()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3727 | |
| 3728 | // 0x41300000 is the top half of 1.0 x 2^20 as a double. |
| 3729 | __ li(a2, Operand(0x41300000)); |
| 3730 | // Move 0x41300000xxxxxxxx (x = random bits in v0) to FPU. |
| 3731 | __ Move(f12, v0, a2); |
| 3732 | // Move 0x4130000000000000 to FPU. |
| 3733 | __ Move(f14, zero_reg, a2); |
| 3734 | // Subtract to get the result. |
| 3735 | __ sub_d(f0, f12, f14); |
| 3736 | } |
| 3737 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3738 | void LCodeGen::DoDeferredRandom(LRandom* instr) { |
| 3739 | __ PrepareCallCFunction(1, scratch0()); |
| 3740 | __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); |
| 3741 | // Return value is in v0. |
| 3742 | } |
| 3743 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3744 | |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 3745 | void LCodeGen::DoMathExp(LMathExp* instr) { |
| 3746 | DoubleRegister input = ToDoubleRegister(instr->value()); |
| 3747 | DoubleRegister result = ToDoubleRegister(instr->result()); |
| 3748 | DoubleRegister double_scratch1 = ToDoubleRegister(instr->double_temp()); |
| 3749 | DoubleRegister double_scratch2 = double_scratch0(); |
| 3750 | Register temp1 = ToRegister(instr->temp1()); |
| 3751 | Register temp2 = ToRegister(instr->temp2()); |
| 3752 | |
| 3753 | MathExpGenerator::EmitMathExp( |
| 3754 | masm(), input, result, double_scratch1, double_scratch2, |
| 3755 | temp1, temp2, scratch0()); |
| 3756 | } |
| 3757 | |
| 3758 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3759 | void LCodeGen::DoMathLog(LMathLog* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3760 | ASSERT(ToDoubleRegister(instr->result()).is(f4)); |
| 3761 | TranscendentalCacheStub stub(TranscendentalCache::LOG, |
| 3762 | TranscendentalCacheStub::UNTAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3763 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3764 | } |
| 3765 | |
| 3766 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3767 | void LCodeGen::DoMathTan(LMathTan* instr) { |
svenpanne@chromium.org | ecb9dd6 | 2011-12-01 08:22:35 +0000 | [diff] [blame] | 3768 | ASSERT(ToDoubleRegister(instr->result()).is(f4)); |
| 3769 | TranscendentalCacheStub stub(TranscendentalCache::TAN, |
| 3770 | TranscendentalCacheStub::UNTAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3771 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
svenpanne@chromium.org | ecb9dd6 | 2011-12-01 08:22:35 +0000 | [diff] [blame] | 3772 | } |
| 3773 | |
| 3774 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3775 | void LCodeGen::DoMathCos(LMathCos* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3776 | ASSERT(ToDoubleRegister(instr->result()).is(f4)); |
| 3777 | TranscendentalCacheStub stub(TranscendentalCache::COS, |
| 3778 | TranscendentalCacheStub::UNTAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3779 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3780 | } |
| 3781 | |
| 3782 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3783 | void LCodeGen::DoMathSin(LMathSin* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3784 | ASSERT(ToDoubleRegister(instr->result()).is(f4)); |
| 3785 | TranscendentalCacheStub stub(TranscendentalCache::SIN, |
| 3786 | TranscendentalCacheStub::UNTAGGED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3787 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3788 | } |
| 3789 | |
| 3790 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3791 | void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) { |
| 3792 | ASSERT(ToRegister(instr->function()).is(a1)); |
| 3793 | ASSERT(instr->HasPointerMap()); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3794 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3795 | Handle<JSFunction> known_function = instr->hydrogen()->known_function(); |
| 3796 | if (known_function.is_null()) { |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3797 | LPointerMap* pointers = instr->pointer_map(); |
| 3798 | RecordPosition(pointers->position()); |
| 3799 | SafepointGenerator generator(this, pointers, Safepoint::kLazyDeopt); |
| 3800 | ParameterCount count(instr->arity()); |
| 3801 | __ InvokeFunction(a1, count, CALL_FUNCTION, generator, CALL_AS_METHOD); |
| 3802 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3803 | } else { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3804 | CallKnownFunction(known_function, |
| 3805 | instr->hydrogen()->formal_parameter_count(), |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3806 | instr->arity(), |
| 3807 | instr, |
| 3808 | CALL_AS_METHOD, |
| 3809 | A1_CONTAINS_TARGET); |
| 3810 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3811 | } |
| 3812 | |
| 3813 | |
| 3814 | void LCodeGen::DoCallKeyed(LCallKeyed* instr) { |
| 3815 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3816 | |
| 3817 | int arity = instr->arity(); |
| 3818 | Handle<Code> ic = |
| 3819 | isolate()->stub_cache()->ComputeKeyedCallInitialize(arity); |
| 3820 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 3821 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3822 | } |
| 3823 | |
| 3824 | |
| 3825 | void LCodeGen::DoCallNamed(LCallNamed* instr) { |
| 3826 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3827 | |
| 3828 | int arity = instr->arity(); |
| 3829 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET; |
| 3830 | Handle<Code> ic = |
| 3831 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
| 3832 | __ li(a2, Operand(instr->name())); |
| 3833 | CallCode(ic, mode, instr); |
| 3834 | // Restore context register. |
| 3835 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3836 | } |
| 3837 | |
| 3838 | |
| 3839 | void LCodeGen::DoCallFunction(LCallFunction* instr) { |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3840 | ASSERT(ToRegister(instr->function()).is(a1)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3841 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3842 | |
| 3843 | int arity = instr->arity(); |
| 3844 | CallFunctionStub stub(arity, NO_CALL_FUNCTION_FLAGS); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3845 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3846 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3847 | } |
| 3848 | |
| 3849 | |
| 3850 | void LCodeGen::DoCallGlobal(LCallGlobal* instr) { |
| 3851 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3852 | |
| 3853 | int arity = instr->arity(); |
| 3854 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET_CONTEXT; |
| 3855 | Handle<Code> ic = |
| 3856 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
| 3857 | __ li(a2, Operand(instr->name())); |
| 3858 | CallCode(ic, mode, instr); |
| 3859 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 3860 | } |
| 3861 | |
| 3862 | |
| 3863 | void LCodeGen::DoCallKnownGlobal(LCallKnownGlobal* instr) { |
| 3864 | ASSERT(ToRegister(instr->result()).is(v0)); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3865 | CallKnownFunction(instr->hydrogen()->target(), |
| 3866 | instr->hydrogen()->formal_parameter_count(), |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3867 | instr->arity(), |
| 3868 | instr, |
| 3869 | CALL_AS_FUNCTION, |
| 3870 | A1_UNINITIALIZED); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3871 | } |
| 3872 | |
| 3873 | |
| 3874 | void LCodeGen::DoCallNew(LCallNew* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3875 | ASSERT(ToRegister(instr->constructor()).is(a1)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3876 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3877 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3878 | __ li(a0, Operand(instr->arity())); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3879 | if (FLAG_optimize_constructed_arrays) { |
| 3880 | // No cell in a2 for construct type feedback in optimized code |
| 3881 | Handle<Object> undefined_value(isolate()->heap()->undefined_value(), |
| 3882 | isolate()); |
| 3883 | __ li(a2, Operand(undefined_value)); |
| 3884 | } |
| 3885 | CallConstructStub stub(NO_CALL_FUNCTION_FLAGS); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3886 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3887 | } |
| 3888 | |
| 3889 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3890 | void LCodeGen::DoCallNewArray(LCallNewArray* instr) { |
| 3891 | ASSERT(ToRegister(instr->constructor()).is(a1)); |
| 3892 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 3893 | ASSERT(FLAG_optimize_constructed_arrays); |
| 3894 | |
| 3895 | __ li(a0, Operand(instr->arity())); |
| 3896 | __ li(a2, Operand(instr->hydrogen()->property_cell())); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 3897 | ElementsKind kind = instr->hydrogen()->elements_kind(); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 3898 | if (instr->arity() == 0) { |
| 3899 | ArrayNoArgumentConstructorStub stub(kind); |
| 3900 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
| 3901 | } else if (instr->arity() == 1) { |
| 3902 | ArraySingleArgumentConstructorStub stub(kind); |
| 3903 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
| 3904 | } else { |
| 3905 | ArrayNArgumentsConstructorStub stub(kind); |
| 3906 | CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr); |
| 3907 | } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3908 | } |
| 3909 | |
| 3910 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3911 | void LCodeGen::DoCallRuntime(LCallRuntime* instr) { |
| 3912 | CallRuntime(instr->function(), instr->arity(), instr); |
| 3913 | } |
| 3914 | |
| 3915 | |
jkummerow@chromium.org | 4c54a2a | 2013-03-19 17:51:30 +0000 | [diff] [blame] | 3916 | void LCodeGen::DoInnerAllocatedObject(LInnerAllocatedObject* instr) { |
| 3917 | Register result = ToRegister(instr->result()); |
| 3918 | Register base = ToRegister(instr->base_object()); |
| 3919 | __ Addu(result, base, Operand(instr->offset())); |
| 3920 | } |
| 3921 | |
| 3922 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3923 | void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) { |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 3924 | Representation representation = instr->representation(); |
| 3925 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3926 | Register object = ToRegister(instr->object()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3927 | Register scratch = scratch0(); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 3928 | HObjectAccess access = instr->hydrogen()->access(); |
| 3929 | int offset = access.offset(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3930 | |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 3931 | Handle<Map> transition = instr->transition(); |
| 3932 | |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 3933 | if (FLAG_track_heap_object_fields && representation.IsHeapObject()) { |
ulan@chromium.org | 906e2fb | 2013-05-14 08:14:38 +0000 | [diff] [blame] | 3934 | Register value = ToRegister(instr->value()); |
| 3935 | if (!instr->hydrogen()->value()->type().IsHeapObject()) { |
| 3936 | __ And(scratch, value, Operand(kSmiTagMask)); |
| 3937 | DeoptimizeIf(eq, instr->environment(), scratch, Operand(zero_reg)); |
| 3938 | } |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 3939 | } else if (FLAG_track_double_fields && representation.IsDouble()) { |
| 3940 | ASSERT(transition.is_null()); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 3941 | ASSERT(access.IsInobject()); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 3942 | ASSERT(!instr->hydrogen()->NeedsWriteBarrier()); |
| 3943 | DoubleRegister value = ToDoubleRegister(instr->value()); |
| 3944 | __ sdc1(value, FieldMemOperand(object, offset)); |
| 3945 | return; |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 3946 | } |
| 3947 | |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 3948 | if (!transition.is_null()) { |
| 3949 | if (transition->CanBeDeprecated()) { |
| 3950 | transition_maps_.Add(transition, info()->zone()); |
| 3951 | } |
| 3952 | __ li(scratch, Operand(transition)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3953 | __ sw(scratch, FieldMemOperand(object, HeapObject::kMapOffset)); |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 3954 | if (instr->hydrogen()->NeedsWriteBarrierForMap()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 3955 | Register temp = ToRegister(instr->temp()); |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 3956 | // Update the write barrier for the map field. |
| 3957 | __ RecordWriteField(object, |
| 3958 | HeapObject::kMapOffset, |
| 3959 | scratch, |
| 3960 | temp, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 3961 | GetRAState(), |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 3962 | kSaveFPRegs, |
| 3963 | OMIT_REMEMBERED_SET, |
| 3964 | OMIT_SMI_CHECK); |
| 3965 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3966 | } |
| 3967 | |
| 3968 | // Do the store. |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 3969 | Register value = ToRegister(instr->value()); |
| 3970 | ASSERT(!object.is(value)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3971 | HType type = instr->hydrogen()->value()->type(); |
| 3972 | SmiCheck check_needed = |
| 3973 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 3974 | if (access.IsInobject()) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3975 | __ sw(value, FieldMemOperand(object, offset)); |
| 3976 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 3977 | // Update the write barrier for the object for in-object properties. |
| 3978 | __ RecordWriteField(object, |
| 3979 | offset, |
| 3980 | value, |
| 3981 | scratch, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 3982 | GetRAState(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3983 | kSaveFPRegs, |
| 3984 | EMIT_REMEMBERED_SET, |
| 3985 | check_needed); |
| 3986 | } |
| 3987 | } else { |
| 3988 | __ lw(scratch, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
| 3989 | __ sw(value, FieldMemOperand(scratch, offset)); |
| 3990 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 3991 | // Update the write barrier for the properties array. |
| 3992 | // object is used as a scratch register. |
| 3993 | __ RecordWriteField(scratch, |
| 3994 | offset, |
| 3995 | value, |
| 3996 | object, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 3997 | GetRAState(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3998 | kSaveFPRegs, |
| 3999 | EMIT_REMEMBERED_SET, |
| 4000 | check_needed); |
| 4001 | } |
| 4002 | } |
| 4003 | } |
| 4004 | |
| 4005 | |
| 4006 | void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) { |
| 4007 | ASSERT(ToRegister(instr->object()).is(a1)); |
| 4008 | ASSERT(ToRegister(instr->value()).is(a0)); |
| 4009 | |
| 4010 | // Name is always in a2. |
| 4011 | __ li(a2, Operand(instr->name())); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4012 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4013 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 4014 | : isolate()->builtins()->StoreIC_Initialize(); |
| 4015 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 4016 | } |
| 4017 | |
| 4018 | |
| 4019 | void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4020 | if (instr->hydrogen()->skip_check()) return; |
| 4021 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 4022 | if (instr->index()->IsConstantOperand()) { |
| 4023 | int constant_index = |
| 4024 | ToInteger32(LConstantOperand::cast(instr->index())); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4025 | if (instr->hydrogen()->length()->representation().IsSmi()) { |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 4026 | __ li(at, Operand(Smi::FromInt(constant_index))); |
| 4027 | } else { |
| 4028 | __ li(at, Operand(constant_index)); |
| 4029 | } |
| 4030 | DeoptimizeIf(hs, |
| 4031 | instr->environment(), |
| 4032 | at, |
| 4033 | Operand(ToRegister(instr->length()))); |
| 4034 | } else { |
| 4035 | DeoptimizeIf(hs, |
| 4036 | instr->environment(), |
| 4037 | ToRegister(instr->index()), |
| 4038 | Operand(ToRegister(instr->length()))); |
| 4039 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4040 | } |
| 4041 | |
| 4042 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4043 | void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) { |
| 4044 | Register external_pointer = ToRegister(instr->elements()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4045 | Register key = no_reg; |
| 4046 | ElementsKind elements_kind = instr->elements_kind(); |
| 4047 | bool key_is_constant = instr->key()->IsConstantOperand(); |
| 4048 | int constant_key = 0; |
| 4049 | if (key_is_constant) { |
| 4050 | constant_key = ToInteger32(LConstantOperand::cast(instr->key())); |
| 4051 | if (constant_key & 0xF0000000) { |
| 4052 | Abort("array index constant value too big."); |
| 4053 | } |
| 4054 | } else { |
| 4055 | key = ToRegister(instr->key()); |
| 4056 | } |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 4057 | int element_size_shift = ElementsKindToShiftSize(elements_kind); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4058 | int shift_size = (instr->hydrogen()->key()->representation().IsSmi()) |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 4059 | ? (element_size_shift - kSmiTagSize) : element_size_shift; |
| 4060 | int additional_offset = instr->additional_index() << element_size_shift; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4061 | |
| 4062 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS || |
| 4063 | elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
| 4064 | FPURegister value(ToDoubleRegister(instr->value())); |
| 4065 | if (key_is_constant) { |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 4066 | __ Addu(scratch0(), external_pointer, constant_key << |
| 4067 | element_size_shift); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4068 | } else { |
| 4069 | __ sll(scratch0(), key, shift_size); |
| 4070 | __ Addu(scratch0(), scratch0(), external_pointer); |
| 4071 | } |
| 4072 | |
| 4073 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
| 4074 | __ cvt_s_d(double_scratch0(), value); |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 4075 | __ swc1(double_scratch0(), MemOperand(scratch0(), additional_offset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4076 | } else { // i.e. elements_kind == EXTERNAL_DOUBLE_ELEMENTS |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 4077 | __ sdc1(value, MemOperand(scratch0(), additional_offset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4078 | } |
| 4079 | } else { |
| 4080 | Register value(ToRegister(instr->value())); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 4081 | MemOperand mem_operand = PrepareKeyedOperand( |
| 4082 | key, external_pointer, key_is_constant, constant_key, |
| 4083 | element_size_shift, shift_size, |
| 4084 | instr->additional_index(), additional_offset); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4085 | switch (elements_kind) { |
| 4086 | case EXTERNAL_PIXEL_ELEMENTS: |
| 4087 | case EXTERNAL_BYTE_ELEMENTS: |
| 4088 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 4089 | __ sb(value, mem_operand); |
| 4090 | break; |
| 4091 | case EXTERNAL_SHORT_ELEMENTS: |
| 4092 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
| 4093 | __ sh(value, mem_operand); |
| 4094 | break; |
| 4095 | case EXTERNAL_INT_ELEMENTS: |
| 4096 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
| 4097 | __ sw(value, mem_operand); |
| 4098 | break; |
| 4099 | case EXTERNAL_FLOAT_ELEMENTS: |
| 4100 | case EXTERNAL_DOUBLE_ELEMENTS: |
| 4101 | case FAST_DOUBLE_ELEMENTS: |
| 4102 | case FAST_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4103 | case FAST_SMI_ELEMENTS: |
| 4104 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
| 4105 | case FAST_HOLEY_ELEMENTS: |
| 4106 | case FAST_HOLEY_SMI_ELEMENTS: |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4107 | case DICTIONARY_ELEMENTS: |
| 4108 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
| 4109 | UNREACHABLE(); |
| 4110 | break; |
| 4111 | } |
| 4112 | } |
| 4113 | } |
| 4114 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4115 | |
| 4116 | void LCodeGen::DoStoreKeyedFixedDoubleArray(LStoreKeyed* instr) { |
| 4117 | DoubleRegister value = ToDoubleRegister(instr->value()); |
| 4118 | Register elements = ToRegister(instr->elements()); |
| 4119 | Register key = no_reg; |
| 4120 | Register scratch = scratch0(); |
| 4121 | bool key_is_constant = instr->key()->IsConstantOperand(); |
| 4122 | int constant_key = 0; |
| 4123 | Label not_nan; |
| 4124 | |
| 4125 | // Calculate the effective address of the slot in the array to store the |
| 4126 | // double value. |
| 4127 | if (key_is_constant) { |
| 4128 | constant_key = ToInteger32(LConstantOperand::cast(instr->key())); |
| 4129 | if (constant_key & 0xF0000000) { |
| 4130 | Abort("array index constant value too big."); |
| 4131 | } |
| 4132 | } else { |
| 4133 | key = ToRegister(instr->key()); |
| 4134 | } |
| 4135 | int element_size_shift = ElementsKindToShiftSize(FAST_DOUBLE_ELEMENTS); |
svenpanne@chromium.org | 53ad175 | 2013-05-27 12:20:38 +0000 | [diff] [blame] | 4136 | int shift_size = (instr->hydrogen()->key()->representation().IsSmi()) |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4137 | ? (element_size_shift - kSmiTagSize) : element_size_shift; |
| 4138 | if (key_is_constant) { |
| 4139 | __ Addu(scratch, elements, Operand((constant_key << element_size_shift) + |
| 4140 | FixedDoubleArray::kHeaderSize - kHeapObjectTag)); |
| 4141 | } else { |
| 4142 | __ sll(scratch, key, shift_size); |
| 4143 | __ Addu(scratch, elements, Operand(scratch)); |
| 4144 | __ Addu(scratch, scratch, |
| 4145 | Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag)); |
| 4146 | } |
| 4147 | |
| 4148 | if (instr->NeedsCanonicalization()) { |
| 4149 | Label is_nan; |
| 4150 | // Check for NaN. All NaNs must be canonicalized. |
| 4151 | __ BranchF(NULL, &is_nan, eq, value, value); |
| 4152 | __ Branch(¬_nan); |
| 4153 | |
| 4154 | // Only load canonical NaN if the comparison above set the overflow. |
| 4155 | __ bind(&is_nan); |
| 4156 | __ Move(value, FixedDoubleArray::canonical_not_the_hole_nan_as_double()); |
| 4157 | } |
| 4158 | |
| 4159 | __ bind(¬_nan); |
| 4160 | __ sdc1(value, MemOperand(scratch, instr->additional_index() << |
| 4161 | element_size_shift)); |
| 4162 | } |
| 4163 | |
| 4164 | |
| 4165 | void LCodeGen::DoStoreKeyedFixedArray(LStoreKeyed* instr) { |
| 4166 | Register value = ToRegister(instr->value()); |
| 4167 | Register elements = ToRegister(instr->elements()); |
| 4168 | Register key = instr->key()->IsRegister() ? ToRegister(instr->key()) |
| 4169 | : no_reg; |
| 4170 | Register scratch = scratch0(); |
| 4171 | Register store_base = scratch; |
| 4172 | int offset = 0; |
| 4173 | |
| 4174 | // Do the store. |
| 4175 | if (instr->key()->IsConstantOperand()) { |
| 4176 | ASSERT(!instr->hydrogen()->NeedsWriteBarrier()); |
| 4177 | LConstantOperand* const_operand = LConstantOperand::cast(instr->key()); |
| 4178 | offset = FixedArray::OffsetOfElementAt(ToInteger32(const_operand) + |
| 4179 | instr->additional_index()); |
| 4180 | store_base = elements; |
| 4181 | } else { |
| 4182 | // Even though the HLoadKeyed instruction forces the input |
| 4183 | // representation for the key to be an integer, the input gets replaced |
| 4184 | // during bound check elimination with the index argument to the bounds |
| 4185 | // 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] | 4186 | if (instr->hydrogen()->key()->representation().IsSmi()) { |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4187 | __ sll(scratch, key, kPointerSizeLog2 - kSmiTagSize); |
| 4188 | __ addu(scratch, elements, scratch); |
| 4189 | } else { |
| 4190 | __ sll(scratch, key, kPointerSizeLog2); |
| 4191 | __ addu(scratch, elements, scratch); |
| 4192 | } |
| 4193 | offset = FixedArray::OffsetOfElementAt(instr->additional_index()); |
| 4194 | } |
| 4195 | __ sw(value, FieldMemOperand(store_base, offset)); |
| 4196 | |
| 4197 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 4198 | HType type = instr->hydrogen()->value()->type(); |
| 4199 | SmiCheck check_needed = |
| 4200 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
| 4201 | // Compute address of modified element and store it into key register. |
| 4202 | __ Addu(key, store_base, Operand(offset - kHeapObjectTag)); |
| 4203 | __ RecordWrite(elements, |
| 4204 | key, |
| 4205 | value, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 4206 | GetRAState(), |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4207 | kSaveFPRegs, |
| 4208 | EMIT_REMEMBERED_SET, |
| 4209 | check_needed); |
| 4210 | } |
| 4211 | } |
| 4212 | |
| 4213 | |
| 4214 | void LCodeGen::DoStoreKeyed(LStoreKeyed* instr) { |
| 4215 | // By cases: external, fast double |
| 4216 | if (instr->is_external()) { |
| 4217 | DoStoreKeyedExternalArray(instr); |
| 4218 | } else if (instr->hydrogen()->value()->representation().IsDouble()) { |
| 4219 | DoStoreKeyedFixedDoubleArray(instr); |
| 4220 | } else { |
| 4221 | DoStoreKeyedFixedArray(instr); |
| 4222 | } |
| 4223 | } |
| 4224 | |
| 4225 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4226 | void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) { |
| 4227 | ASSERT(ToRegister(instr->object()).is(a2)); |
| 4228 | ASSERT(ToRegister(instr->key()).is(a1)); |
| 4229 | ASSERT(ToRegister(instr->value()).is(a0)); |
| 4230 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4231 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4232 | ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict() |
| 4233 | : isolate()->builtins()->KeyedStoreIC_Initialize(); |
| 4234 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 4235 | } |
| 4236 | |
| 4237 | |
| 4238 | void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) { |
| 4239 | Register object_reg = ToRegister(instr->object()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4240 | Register scratch = scratch0(); |
| 4241 | |
| 4242 | Handle<Map> from_map = instr->original_map(); |
| 4243 | Handle<Map> to_map = instr->transitioned_map(); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 4244 | ElementsKind from_kind = instr->from_kind(); |
| 4245 | ElementsKind to_kind = instr->to_kind(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4246 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4247 | Label not_applicable; |
| 4248 | __ lw(scratch, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
| 4249 | __ Branch(¬_applicable, ne, scratch, Operand(from_map)); |
| 4250 | |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 4251 | if (IsSimpleMapChangeTransition(from_kind, to_kind)) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4252 | Register new_map_reg = ToRegister(instr->new_map_temp()); |
| 4253 | __ li(new_map_reg, Operand(to_map)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4254 | __ sw(new_map_reg, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
| 4255 | // Write barrier. |
| 4256 | __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg, |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 4257 | scratch, GetRAState(), kDontSaveFPRegs); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4258 | } else if (FLAG_compiled_transitions) { |
| 4259 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4260 | __ mov(a0, object_reg); |
| 4261 | __ li(a1, Operand(to_map)); |
| 4262 | TransitionElementsKindStub stub(from_kind, to_kind); |
| 4263 | __ CallStub(&stub); |
| 4264 | RecordSafepointWithRegisters( |
| 4265 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4266 | } else if (IsFastSmiElementsKind(from_kind) && |
| 4267 | IsFastDoubleElementsKind(to_kind)) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4268 | Register fixed_object_reg = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4269 | ASSERT(fixed_object_reg.is(a2)); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4270 | Register new_map_reg = ToRegister(instr->new_map_temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4271 | ASSERT(new_map_reg.is(a3)); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4272 | __ li(new_map_reg, Operand(to_map)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4273 | __ mov(fixed_object_reg, object_reg); |
| 4274 | CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(), |
| 4275 | RelocInfo::CODE_TARGET, instr); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4276 | } else if (IsFastDoubleElementsKind(from_kind) && |
| 4277 | IsFastObjectElementsKind(to_kind)) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4278 | Register fixed_object_reg = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4279 | ASSERT(fixed_object_reg.is(a2)); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4280 | Register new_map_reg = ToRegister(instr->new_map_temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4281 | ASSERT(new_map_reg.is(a3)); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4282 | __ li(new_map_reg, Operand(to_map)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4283 | __ mov(fixed_object_reg, object_reg); |
| 4284 | CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(), |
| 4285 | RelocInfo::CODE_TARGET, instr); |
| 4286 | } else { |
| 4287 | UNREACHABLE(); |
| 4288 | } |
| 4289 | __ bind(¬_applicable); |
| 4290 | } |
| 4291 | |
| 4292 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4293 | void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) { |
| 4294 | Register object = ToRegister(instr->object()); |
| 4295 | Register temp = ToRegister(instr->temp()); |
| 4296 | Label fail; |
| 4297 | __ TestJSArrayForAllocationSiteInfo(object, temp, ne, &fail); |
| 4298 | DeoptimizeIf(al, instr->environment()); |
| 4299 | __ bind(&fail); |
| 4300 | } |
| 4301 | |
| 4302 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4303 | void LCodeGen::DoStringAdd(LStringAdd* instr) { |
| 4304 | __ push(ToRegister(instr->left())); |
| 4305 | __ push(ToRegister(instr->right())); |
| 4306 | StringAddStub stub(NO_STRING_CHECK_IN_STUB); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 4307 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4308 | } |
| 4309 | |
| 4310 | |
| 4311 | void LCodeGen::DoStringCharCodeAt(LStringCharCodeAt* instr) { |
| 4312 | class DeferredStringCharCodeAt: public LDeferredCode { |
| 4313 | public: |
| 4314 | DeferredStringCharCodeAt(LCodeGen* codegen, LStringCharCodeAt* instr) |
| 4315 | : LDeferredCode(codegen), instr_(instr) { } |
| 4316 | virtual void Generate() { codegen()->DoDeferredStringCharCodeAt(instr_); } |
| 4317 | virtual LInstruction* instr() { return instr_; } |
| 4318 | private: |
| 4319 | LStringCharCodeAt* instr_; |
| 4320 | }; |
| 4321 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4322 | DeferredStringCharCodeAt* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4323 | new(zone()) DeferredStringCharCodeAt(this, instr); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4324 | StringCharLoadGenerator::Generate(masm(), |
| 4325 | ToRegister(instr->string()), |
| 4326 | ToRegister(instr->index()), |
| 4327 | ToRegister(instr->result()), |
| 4328 | deferred->entry()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4329 | __ bind(deferred->exit()); |
| 4330 | } |
| 4331 | |
| 4332 | |
| 4333 | void LCodeGen::DoDeferredStringCharCodeAt(LStringCharCodeAt* instr) { |
| 4334 | Register string = ToRegister(instr->string()); |
| 4335 | Register result = ToRegister(instr->result()); |
| 4336 | Register scratch = scratch0(); |
| 4337 | |
| 4338 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4339 | // result register contain a valid pointer because it is already |
| 4340 | // contained in the register pointer map. |
| 4341 | __ mov(result, zero_reg); |
| 4342 | |
| 4343 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4344 | __ push(string); |
| 4345 | // Push the index as a smi. This is safe because of the checks in |
| 4346 | // DoStringCharCodeAt above. |
| 4347 | if (instr->index()->IsConstantOperand()) { |
| 4348 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 4349 | __ Addu(scratch, zero_reg, Operand(Smi::FromInt(const_index))); |
| 4350 | __ push(scratch); |
| 4351 | } else { |
| 4352 | Register index = ToRegister(instr->index()); |
| 4353 | __ SmiTag(index); |
| 4354 | __ push(index); |
| 4355 | } |
| 4356 | CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2, instr); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4357 | __ AssertSmi(v0); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4358 | __ SmiUntag(v0); |
| 4359 | __ StoreToSafepointRegisterSlot(v0, result); |
| 4360 | } |
| 4361 | |
| 4362 | |
| 4363 | void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { |
| 4364 | class DeferredStringCharFromCode: public LDeferredCode { |
| 4365 | public: |
| 4366 | DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr) |
| 4367 | : LDeferredCode(codegen), instr_(instr) { } |
| 4368 | virtual void Generate() { codegen()->DoDeferredStringCharFromCode(instr_); } |
| 4369 | virtual LInstruction* instr() { return instr_; } |
| 4370 | private: |
| 4371 | LStringCharFromCode* instr_; |
| 4372 | }; |
| 4373 | |
| 4374 | DeferredStringCharFromCode* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4375 | new(zone()) DeferredStringCharFromCode(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4376 | |
| 4377 | ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); |
| 4378 | Register char_code = ToRegister(instr->char_code()); |
| 4379 | Register result = ToRegister(instr->result()); |
| 4380 | Register scratch = scratch0(); |
| 4381 | ASSERT(!char_code.is(result)); |
| 4382 | |
| 4383 | __ Branch(deferred->entry(), hi, |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4384 | char_code, Operand(String::kMaxOneByteCharCode)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4385 | __ LoadRoot(result, Heap::kSingleCharacterStringCacheRootIndex); |
| 4386 | __ sll(scratch, char_code, kPointerSizeLog2); |
| 4387 | __ Addu(result, result, scratch); |
| 4388 | __ lw(result, FieldMemOperand(result, FixedArray::kHeaderSize)); |
| 4389 | __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 4390 | __ Branch(deferred->entry(), eq, result, Operand(scratch)); |
| 4391 | __ bind(deferred->exit()); |
| 4392 | } |
| 4393 | |
| 4394 | |
| 4395 | void LCodeGen::DoDeferredStringCharFromCode(LStringCharFromCode* instr) { |
| 4396 | Register char_code = ToRegister(instr->char_code()); |
| 4397 | Register result = ToRegister(instr->result()); |
| 4398 | |
| 4399 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4400 | // result register contain a valid pointer because it is already |
| 4401 | // contained in the register pointer map. |
| 4402 | __ mov(result, zero_reg); |
| 4403 | |
| 4404 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4405 | __ SmiTag(char_code); |
| 4406 | __ push(char_code); |
| 4407 | CallRuntimeFromDeferred(Runtime::kCharFromCode, 1, instr); |
| 4408 | __ StoreToSafepointRegisterSlot(v0, result); |
| 4409 | } |
| 4410 | |
| 4411 | |
| 4412 | void LCodeGen::DoStringLength(LStringLength* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4413 | Register string = ToRegister(instr->string()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4414 | Register result = ToRegister(instr->result()); |
| 4415 | __ lw(result, FieldMemOperand(string, String::kLengthOffset)); |
| 4416 | } |
| 4417 | |
| 4418 | |
| 4419 | void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4420 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4421 | ASSERT(input->IsRegister() || input->IsStackSlot()); |
| 4422 | LOperand* output = instr->result(); |
| 4423 | ASSERT(output->IsDoubleRegister()); |
| 4424 | FPURegister single_scratch = double_scratch0().low(); |
| 4425 | if (input->IsStackSlot()) { |
| 4426 | Register scratch = scratch0(); |
| 4427 | __ lw(scratch, ToMemOperand(input)); |
| 4428 | __ mtc1(scratch, single_scratch); |
| 4429 | } else { |
| 4430 | __ mtc1(ToRegister(input), single_scratch); |
| 4431 | } |
| 4432 | __ cvt_d_w(ToDoubleRegister(output), single_scratch); |
| 4433 | } |
| 4434 | |
| 4435 | |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 4436 | void LCodeGen::DoInteger32ToSmi(LInteger32ToSmi* instr) { |
| 4437 | LOperand* input = instr->value(); |
| 4438 | ASSERT(input->IsRegister()); |
| 4439 | LOperand* output = instr->result(); |
| 4440 | ASSERT(output->IsRegister()); |
| 4441 | Register scratch = scratch0(); |
| 4442 | |
| 4443 | __ SmiTagCheckOverflow(ToRegister(output), ToRegister(input), scratch); |
| 4444 | if (!instr->hydrogen()->value()->HasRange() || |
| 4445 | !instr->hydrogen()->value()->range()->IsInSmiRange()) { |
| 4446 | DeoptimizeIf(lt, instr->environment(), scratch, Operand(zero_reg)); |
| 4447 | } |
| 4448 | } |
| 4449 | |
| 4450 | |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4451 | void LCodeGen::DoUint32ToDouble(LUint32ToDouble* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4452 | LOperand* input = instr->value(); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4453 | LOperand* output = instr->result(); |
| 4454 | |
| 4455 | FPURegister dbl_scratch = double_scratch0(); |
| 4456 | __ mtc1(ToRegister(input), dbl_scratch); |
| 4457 | __ Cvt_d_uw(ToDoubleRegister(output), dbl_scratch, f22); |
| 4458 | } |
| 4459 | |
| 4460 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4461 | void LCodeGen::DoNumberTagI(LNumberTagI* instr) { |
| 4462 | class DeferredNumberTagI: public LDeferredCode { |
| 4463 | public: |
| 4464 | DeferredNumberTagI(LCodeGen* codegen, LNumberTagI* instr) |
| 4465 | : LDeferredCode(codegen), instr_(instr) { } |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4466 | virtual void Generate() { |
| 4467 | codegen()->DoDeferredNumberTagI(instr_, |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4468 | instr_->value(), |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4469 | SIGNED_INT32); |
| 4470 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4471 | virtual LInstruction* instr() { return instr_; } |
| 4472 | private: |
| 4473 | LNumberTagI* instr_; |
| 4474 | }; |
| 4475 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4476 | Register src = ToRegister(instr->value()); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4477 | Register dst = ToRegister(instr->result()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4478 | Register overflow = scratch0(); |
| 4479 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4480 | DeferredNumberTagI* deferred = new(zone()) DeferredNumberTagI(this, instr); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4481 | __ SmiTagCheckOverflow(dst, src, overflow); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4482 | __ BranchOnOverflow(deferred->entry(), overflow); |
| 4483 | __ bind(deferred->exit()); |
| 4484 | } |
| 4485 | |
| 4486 | |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4487 | void LCodeGen::DoNumberTagU(LNumberTagU* instr) { |
| 4488 | class DeferredNumberTagU: public LDeferredCode { |
| 4489 | public: |
| 4490 | DeferredNumberTagU(LCodeGen* codegen, LNumberTagU* instr) |
| 4491 | : LDeferredCode(codegen), instr_(instr) { } |
| 4492 | virtual void Generate() { |
| 4493 | codegen()->DoDeferredNumberTagI(instr_, |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4494 | instr_->value(), |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4495 | UNSIGNED_INT32); |
| 4496 | } |
| 4497 | virtual LInstruction* instr() { return instr_; } |
| 4498 | private: |
| 4499 | LNumberTagU* instr_; |
| 4500 | }; |
| 4501 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4502 | LOperand* input = instr->value(); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4503 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4504 | Register reg = ToRegister(input); |
| 4505 | |
| 4506 | DeferredNumberTagU* deferred = new(zone()) DeferredNumberTagU(this, instr); |
| 4507 | __ Branch(deferred->entry(), hi, reg, Operand(Smi::kMaxValue)); |
| 4508 | __ SmiTag(reg, reg); |
| 4509 | __ bind(deferred->exit()); |
| 4510 | } |
| 4511 | |
| 4512 | |
| 4513 | void LCodeGen::DoDeferredNumberTagI(LInstruction* instr, |
| 4514 | LOperand* value, |
| 4515 | IntegerSignedness signedness) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4516 | Label slow; |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4517 | Register src = ToRegister(value); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4518 | Register dst = ToRegister(instr->result()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4519 | DoubleRegister dbl_scratch = double_scratch0(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4520 | |
| 4521 | // Preserve the value of all registers. |
| 4522 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4523 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4524 | Label done; |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4525 | if (signedness == SIGNED_INT32) { |
| 4526 | // There was overflow, so bits 30 and 31 of the original integer |
| 4527 | // disagree. Try to allocate a heap number in new space and store |
| 4528 | // the value in there. If that fails, call the runtime system. |
| 4529 | if (dst.is(src)) { |
| 4530 | __ SmiUntag(src, dst); |
| 4531 | __ Xor(src, src, Operand(0x80000000)); |
| 4532 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4533 | __ mtc1(src, dbl_scratch); |
| 4534 | __ cvt_d_w(dbl_scratch, dbl_scratch); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4535 | } else { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4536 | __ mtc1(src, dbl_scratch); |
| 4537 | __ Cvt_d_uw(dbl_scratch, dbl_scratch, f22); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4538 | } |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 4539 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4540 | if (FLAG_inline_new) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4541 | __ LoadRoot(scratch0(), Heap::kHeapNumberMapRootIndex); |
| 4542 | __ AllocateHeapNumber(t1, a3, t0, scratch0(), &slow, DONT_TAG_RESULT); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4543 | __ Move(dst, t1); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4544 | __ Branch(&done); |
| 4545 | } |
| 4546 | |
| 4547 | // Slow case: Call the runtime system to do the number allocation. |
| 4548 | __ bind(&slow); |
| 4549 | |
| 4550 | // TODO(3095996): Put a valid pointer value in the stack slot where the result |
| 4551 | // register is stored, as this register is in the pointer map, but contains an |
| 4552 | // integer value. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4553 | __ StoreToSafepointRegisterSlot(zero_reg, dst); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4554 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, instr); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4555 | __ Move(dst, v0); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4556 | __ Subu(dst, dst, kHeapObjectTag); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4557 | |
| 4558 | // Done. Put the value in dbl_scratch into the value of the allocated heap |
| 4559 | // number. |
| 4560 | __ bind(&done); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4561 | __ sdc1(dbl_scratch, MemOperand(dst, HeapNumber::kValueOffset)); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4562 | __ Addu(dst, dst, kHeapObjectTag); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4563 | __ StoreToSafepointRegisterSlot(dst, dst); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4564 | } |
| 4565 | |
| 4566 | |
| 4567 | void LCodeGen::DoNumberTagD(LNumberTagD* instr) { |
| 4568 | class DeferredNumberTagD: public LDeferredCode { |
| 4569 | public: |
| 4570 | DeferredNumberTagD(LCodeGen* codegen, LNumberTagD* instr) |
| 4571 | : LDeferredCode(codegen), instr_(instr) { } |
| 4572 | virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); } |
| 4573 | virtual LInstruction* instr() { return instr_; } |
| 4574 | private: |
| 4575 | LNumberTagD* instr_; |
| 4576 | }; |
| 4577 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4578 | DoubleRegister input_reg = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4579 | Register scratch = scratch0(); |
| 4580 | Register reg = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4581 | Register temp1 = ToRegister(instr->temp()); |
| 4582 | Register temp2 = ToRegister(instr->temp2()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4583 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4584 | bool convert_hole = false; |
| 4585 | HValue* change_input = instr->hydrogen()->value(); |
| 4586 | if (change_input->IsLoadKeyed()) { |
| 4587 | HLoadKeyed* load = HLoadKeyed::cast(change_input); |
| 4588 | convert_hole = load->UsesMustHandleHole(); |
| 4589 | } |
| 4590 | |
| 4591 | Label no_special_nan_handling; |
| 4592 | Label done; |
| 4593 | if (convert_hole) { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4594 | DoubleRegister input_reg = ToDoubleRegister(instr->value()); |
| 4595 | __ BranchF(&no_special_nan_handling, NULL, eq, input_reg, input_reg); |
| 4596 | __ Move(reg, scratch0(), input_reg); |
| 4597 | Label canonicalize; |
| 4598 | __ Branch(&canonicalize, ne, scratch0(), Operand(kHoleNanUpper32)); |
| 4599 | __ li(reg, factory()->the_hole_value()); |
| 4600 | __ Branch(&done); |
| 4601 | __ bind(&canonicalize); |
| 4602 | __ Move(input_reg, |
| 4603 | FixedDoubleArray::canonical_not_the_hole_nan_as_double()); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4604 | } |
| 4605 | |
| 4606 | __ bind(&no_special_nan_handling); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4607 | DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4608 | if (FLAG_inline_new) { |
| 4609 | __ LoadRoot(scratch, Heap::kHeapNumberMapRootIndex); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4610 | // We want the untagged address first for performance |
| 4611 | __ AllocateHeapNumber(reg, temp1, temp2, scratch, deferred->entry(), |
| 4612 | DONT_TAG_RESULT); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4613 | } else { |
| 4614 | __ Branch(deferred->entry()); |
| 4615 | } |
| 4616 | __ bind(deferred->exit()); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4617 | __ sdc1(input_reg, MemOperand(reg, HeapNumber::kValueOffset)); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4618 | // Now that we have finished with the object's real address tag it |
| 4619 | __ Addu(reg, reg, kHeapObjectTag); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4620 | __ bind(&done); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4621 | } |
| 4622 | |
| 4623 | |
| 4624 | void LCodeGen::DoDeferredNumberTagD(LNumberTagD* instr) { |
| 4625 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4626 | // result register contain a valid pointer because it is already |
| 4627 | // contained in the register pointer map. |
| 4628 | Register reg = ToRegister(instr->result()); |
| 4629 | __ mov(reg, zero_reg); |
| 4630 | |
| 4631 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 4632 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, instr); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4633 | __ Subu(v0, v0, kHeapObjectTag); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4634 | __ StoreToSafepointRegisterSlot(v0, reg); |
| 4635 | } |
| 4636 | |
| 4637 | |
| 4638 | void LCodeGen::DoSmiTag(LSmiTag* instr) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4639 | ASSERT(!instr->hydrogen_value()->CheckFlag(HValue::kCanOverflow)); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4640 | __ SmiTag(ToRegister(instr->result()), ToRegister(instr->value())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4641 | } |
| 4642 | |
| 4643 | |
| 4644 | void LCodeGen::DoSmiUntag(LSmiUntag* instr) { |
| 4645 | Register scratch = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4646 | Register input = ToRegister(instr->value()); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4647 | Register result = ToRegister(instr->result()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4648 | if (instr->needs_check()) { |
| 4649 | STATIC_ASSERT(kHeapObjectTag == 1); |
| 4650 | // 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] | 4651 | __ And(scratch, input, Operand(kHeapObjectTag)); |
| 4652 | __ SmiUntag(result, input); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4653 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(zero_reg)); |
| 4654 | } else { |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4655 | __ SmiUntag(result, input); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4656 | } |
| 4657 | } |
| 4658 | |
| 4659 | |
| 4660 | void LCodeGen::EmitNumberUntagD(Register input_reg, |
| 4661 | DoubleRegister result_reg, |
| 4662 | bool deoptimize_on_undefined, |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 4663 | bool deoptimize_on_minus_zero, |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4664 | LEnvironment* env, |
| 4665 | NumberUntagDMode mode) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4666 | Register scratch = scratch0(); |
| 4667 | |
| 4668 | Label load_smi, heap_number, done; |
| 4669 | |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame^] | 4670 | STATIC_ASSERT(NUMBER_CANDIDATE_IS_ANY_TAGGED_CONVERT_HOLE > |
| 4671 | NUMBER_CANDIDATE_IS_ANY_TAGGED); |
| 4672 | if (mode >= NUMBER_CANDIDATE_IS_ANY_TAGGED) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4673 | // Smi check. |
| 4674 | __ UntagAndJumpIfSmi(scratch, input_reg, &load_smi); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4675 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4676 | // Heap number map check. |
| 4677 | __ lw(scratch, FieldMemOperand(input_reg, HeapObject::kMapOffset)); |
| 4678 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 4679 | if (deoptimize_on_undefined) { |
| 4680 | DeoptimizeIf(ne, env, scratch, Operand(at)); |
| 4681 | } else { |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame^] | 4682 | Label heap_number, convert; |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4683 | __ Branch(&heap_number, eq, scratch, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4684 | |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame^] | 4685 | // Convert undefined (and hole) to NaN. |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4686 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame^] | 4687 | if (mode == NUMBER_CANDIDATE_IS_ANY_TAGGED_CONVERT_HOLE) { |
| 4688 | __ Branch(&convert, eq, input_reg, Operand(at)); |
| 4689 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| 4690 | } |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4691 | DeoptimizeIf(ne, env, input_reg, Operand(at)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4692 | |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame^] | 4693 | __ bind(&convert); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4694 | __ LoadRoot(at, Heap::kNanValueRootIndex); |
| 4695 | __ ldc1(result_reg, FieldMemOperand(at, HeapNumber::kValueOffset)); |
| 4696 | __ Branch(&done); |
| 4697 | |
| 4698 | __ bind(&heap_number); |
| 4699 | } |
| 4700 | // Heap number to double register conversion. |
| 4701 | __ ldc1(result_reg, FieldMemOperand(input_reg, HeapNumber::kValueOffset)); |
| 4702 | if (deoptimize_on_minus_zero) { |
| 4703 | __ mfc1(at, result_reg.low()); |
| 4704 | __ Branch(&done, ne, at, Operand(zero_reg)); |
| 4705 | __ mfc1(scratch, result_reg.high()); |
| 4706 | DeoptimizeIf(eq, env, scratch, Operand(HeapNumber::kSignMask)); |
| 4707 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4708 | __ Branch(&done); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4709 | } else { |
| 4710 | __ SmiUntag(scratch, input_reg); |
| 4711 | ASSERT(mode == NUMBER_CANDIDATE_IS_SMI); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4712 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4713 | |
| 4714 | // Smi to double register conversion |
| 4715 | __ bind(&load_smi); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4716 | // scratch: untagged value of input_reg |
| 4717 | __ mtc1(scratch, result_reg); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4718 | __ cvt_d_w(result_reg, result_reg); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4719 | __ bind(&done); |
| 4720 | } |
| 4721 | |
| 4722 | |
| 4723 | void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4724 | Register input_reg = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4725 | Register scratch1 = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4726 | Register scratch2 = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4727 | DoubleRegister double_scratch = double_scratch0(); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4728 | DoubleRegister double_scratch2 = ToDoubleRegister(instr->temp3()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4729 | |
| 4730 | ASSERT(!scratch1.is(input_reg) && !scratch1.is(scratch2)); |
| 4731 | ASSERT(!scratch2.is(input_reg) && !scratch2.is(scratch1)); |
| 4732 | |
| 4733 | Label done; |
| 4734 | |
| 4735 | // The input is a tagged HeapObject. |
| 4736 | // Heap number map check. |
| 4737 | __ lw(scratch1, FieldMemOperand(input_reg, HeapObject::kMapOffset)); |
| 4738 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 4739 | // This 'at' value and scratch1 map value are used for tests in both clauses |
| 4740 | // of the if. |
| 4741 | |
| 4742 | if (instr->truncating()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4743 | Register scratch3 = ToRegister(instr->temp2()); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4744 | FPURegister single_scratch = double_scratch.low(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4745 | ASSERT(!scratch3.is(input_reg) && |
| 4746 | !scratch3.is(scratch1) && |
| 4747 | !scratch3.is(scratch2)); |
| 4748 | // Performs a truncating conversion of a floating point number as used by |
| 4749 | // the JS bitwise operations. |
| 4750 | Label heap_number; |
| 4751 | __ Branch(&heap_number, eq, scratch1, Operand(at)); // HeapNumber map? |
| 4752 | // Check for undefined. Undefined is converted to zero for truncating |
| 4753 | // conversions. |
| 4754 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 4755 | DeoptimizeIf(ne, instr->environment(), input_reg, Operand(at)); |
| 4756 | ASSERT(ToRegister(instr->result()).is(input_reg)); |
| 4757 | __ mov(input_reg, zero_reg); |
| 4758 | __ Branch(&done); |
| 4759 | |
| 4760 | __ bind(&heap_number); |
| 4761 | __ ldc1(double_scratch2, |
| 4762 | FieldMemOperand(input_reg, HeapNumber::kValueOffset)); |
| 4763 | __ EmitECMATruncate(input_reg, |
| 4764 | double_scratch2, |
| 4765 | single_scratch, |
| 4766 | scratch1, |
| 4767 | scratch2, |
| 4768 | scratch3); |
| 4769 | } else { |
| 4770 | // Deoptimize if we don't have a heap number. |
| 4771 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(at)); |
| 4772 | |
| 4773 | // Load the double value. |
| 4774 | __ ldc1(double_scratch, |
| 4775 | FieldMemOperand(input_reg, HeapNumber::kValueOffset)); |
| 4776 | |
| 4777 | Register except_flag = scratch2; |
| 4778 | __ EmitFPUTruncate(kRoundToZero, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4779 | input_reg, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4780 | double_scratch, |
| 4781 | scratch1, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4782 | double_scratch2, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4783 | except_flag, |
| 4784 | kCheckForInexactConversion); |
| 4785 | |
| 4786 | // Deopt if the operation did not succeed. |
| 4787 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
| 4788 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4789 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4790 | __ Branch(&done, ne, input_reg, Operand(zero_reg)); |
| 4791 | |
| 4792 | __ mfc1(scratch1, double_scratch.high()); |
| 4793 | __ And(scratch1, scratch1, Operand(HeapNumber::kSignMask)); |
| 4794 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(zero_reg)); |
| 4795 | } |
| 4796 | } |
| 4797 | __ bind(&done); |
| 4798 | } |
| 4799 | |
| 4800 | |
| 4801 | void LCodeGen::DoTaggedToI(LTaggedToI* instr) { |
| 4802 | class DeferredTaggedToI: public LDeferredCode { |
| 4803 | public: |
| 4804 | DeferredTaggedToI(LCodeGen* codegen, LTaggedToI* instr) |
| 4805 | : LDeferredCode(codegen), instr_(instr) { } |
| 4806 | virtual void Generate() { codegen()->DoDeferredTaggedToI(instr_); } |
| 4807 | virtual LInstruction* instr() { return instr_; } |
| 4808 | private: |
| 4809 | LTaggedToI* instr_; |
| 4810 | }; |
| 4811 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4812 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4813 | ASSERT(input->IsRegister()); |
| 4814 | ASSERT(input->Equals(instr->result())); |
| 4815 | |
| 4816 | Register input_reg = ToRegister(input); |
| 4817 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4818 | DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4819 | |
| 4820 | // Let the deferred code handle the HeapObject case. |
| 4821 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
| 4822 | |
| 4823 | // Smi to int32 conversion. |
| 4824 | __ SmiUntag(input_reg); |
| 4825 | __ bind(deferred->exit()); |
| 4826 | } |
| 4827 | |
| 4828 | |
| 4829 | void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4830 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4831 | ASSERT(input->IsRegister()); |
| 4832 | LOperand* result = instr->result(); |
| 4833 | ASSERT(result->IsDoubleRegister()); |
| 4834 | |
| 4835 | Register input_reg = ToRegister(input); |
| 4836 | DoubleRegister result_reg = ToDoubleRegister(result); |
| 4837 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4838 | NumberUntagDMode mode = NUMBER_CANDIDATE_IS_ANY_TAGGED; |
| 4839 | HValue* value = instr->hydrogen()->value(); |
| 4840 | if (value->type().IsSmi()) { |
jkummerow@chromium.org | c118402 | 2013-05-28 16:58:15 +0000 | [diff] [blame^] | 4841 | mode = NUMBER_CANDIDATE_IS_SMI; |
| 4842 | } else if (value->IsLoadKeyed()) { |
| 4843 | HLoadKeyed* load = HLoadKeyed::cast(value); |
| 4844 | if (load->UsesMustHandleHole()) { |
| 4845 | if (load->hole_mode() == ALLOW_RETURN_HOLE) { |
| 4846 | mode = NUMBER_CANDIDATE_IS_ANY_TAGGED_CONVERT_HOLE; |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4847 | } |
| 4848 | } |
| 4849 | } |
| 4850 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4851 | EmitNumberUntagD(input_reg, result_reg, |
| 4852 | instr->hydrogen()->deoptimize_on_undefined(), |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 4853 | instr->hydrogen()->deoptimize_on_minus_zero(), |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 4854 | instr->environment(), |
| 4855 | mode); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4856 | } |
| 4857 | |
| 4858 | |
| 4859 | void LCodeGen::DoDoubleToI(LDoubleToI* instr) { |
| 4860 | Register result_reg = ToRegister(instr->result()); |
| 4861 | Register scratch1 = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4862 | Register scratch2 = ToRegister(instr->temp()); |
| 4863 | DoubleRegister double_input = ToDoubleRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4864 | |
| 4865 | if (instr->truncating()) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4866 | Register scratch3 = ToRegister(instr->temp2()); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4867 | FPURegister single_scratch = double_scratch0().low(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4868 | __ EmitECMATruncate(result_reg, |
| 4869 | double_input, |
| 4870 | single_scratch, |
| 4871 | scratch1, |
| 4872 | scratch2, |
| 4873 | scratch3); |
| 4874 | } else { |
| 4875 | Register except_flag = scratch2; |
| 4876 | |
| 4877 | __ EmitFPUTruncate(kRoundToMinusInf, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4878 | result_reg, |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4879 | double_input, |
| 4880 | scratch1, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 4881 | double_scratch0(), |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4882 | except_flag, |
| 4883 | kCheckForInexactConversion); |
| 4884 | |
| 4885 | // Deopt if the operation did not succeed (except_flag != 0). |
| 4886 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 4887 | |
| 4888 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4889 | Label done; |
| 4890 | __ Branch(&done, ne, result_reg, Operand(zero_reg)); |
| 4891 | __ mfc1(scratch1, double_input.high()); |
| 4892 | __ And(scratch1, scratch1, Operand(HeapNumber::kSignMask)); |
| 4893 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(zero_reg)); |
| 4894 | __ bind(&done); |
| 4895 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4896 | } |
| 4897 | } |
| 4898 | |
| 4899 | |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 4900 | void LCodeGen::DoDoubleToSmi(LDoubleToSmi* instr) { |
| 4901 | Register result_reg = ToRegister(instr->result()); |
| 4902 | Register scratch1 = scratch0(); |
| 4903 | Register scratch2 = ToRegister(instr->temp()); |
| 4904 | DoubleRegister double_input = ToDoubleRegister(instr->value()); |
| 4905 | |
| 4906 | if (instr->truncating()) { |
| 4907 | Register scratch3 = ToRegister(instr->temp2()); |
| 4908 | FPURegister single_scratch = double_scratch0().low(); |
| 4909 | __ EmitECMATruncate(result_reg, |
| 4910 | double_input, |
| 4911 | single_scratch, |
| 4912 | scratch1, |
| 4913 | scratch2, |
| 4914 | scratch3); |
| 4915 | } else { |
| 4916 | Register except_flag = scratch2; |
| 4917 | |
| 4918 | __ EmitFPUTruncate(kRoundToMinusInf, |
| 4919 | result_reg, |
| 4920 | double_input, |
| 4921 | scratch1, |
| 4922 | double_scratch0(), |
| 4923 | except_flag, |
| 4924 | kCheckForInexactConversion); |
| 4925 | |
| 4926 | // Deopt if the operation did not succeed (except_flag != 0). |
| 4927 | DeoptimizeIf(ne, instr->environment(), except_flag, Operand(zero_reg)); |
| 4928 | |
| 4929 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4930 | Label done; |
| 4931 | __ Branch(&done, ne, result_reg, Operand(zero_reg)); |
| 4932 | __ mfc1(scratch1, double_input.high()); |
| 4933 | __ And(scratch1, scratch1, Operand(HeapNumber::kSignMask)); |
| 4934 | DeoptimizeIf(ne, instr->environment(), scratch1, Operand(zero_reg)); |
| 4935 | __ bind(&done); |
| 4936 | } |
| 4937 | } |
| 4938 | __ SmiTagCheckOverflow(result_reg, result_reg, scratch1); |
| 4939 | DeoptimizeIf(lt, instr->environment(), scratch1, Operand(zero_reg)); |
| 4940 | } |
| 4941 | |
| 4942 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4943 | void LCodeGen::DoCheckSmi(LCheckSmi* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4944 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4945 | __ And(at, ToRegister(input), Operand(kSmiTagMask)); |
| 4946 | DeoptimizeIf(ne, instr->environment(), at, Operand(zero_reg)); |
| 4947 | } |
| 4948 | |
| 4949 | |
| 4950 | void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4951 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4952 | __ And(at, ToRegister(input), Operand(kSmiTagMask)); |
| 4953 | DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg)); |
| 4954 | } |
| 4955 | |
| 4956 | |
| 4957 | void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4958 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4959 | Register scratch = scratch0(); |
| 4960 | |
| 4961 | __ GetObjectType(input, scratch, scratch); |
| 4962 | |
| 4963 | if (instr->hydrogen()->is_interval_check()) { |
| 4964 | InstanceType first; |
| 4965 | InstanceType last; |
| 4966 | instr->hydrogen()->GetCheckInterval(&first, &last); |
| 4967 | |
| 4968 | // If there is only one type in the interval check for equality. |
| 4969 | if (first == last) { |
| 4970 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(first)); |
| 4971 | } else { |
| 4972 | DeoptimizeIf(lo, instr->environment(), scratch, Operand(first)); |
| 4973 | // Omit check for the last type. |
| 4974 | if (last != LAST_TYPE) { |
| 4975 | DeoptimizeIf(hi, instr->environment(), scratch, Operand(last)); |
| 4976 | } |
| 4977 | } |
| 4978 | } else { |
| 4979 | uint8_t mask; |
| 4980 | uint8_t tag; |
| 4981 | instr->hydrogen()->GetCheckMaskAndTag(&mask, &tag); |
| 4982 | |
| 4983 | if (IsPowerOf2(mask)) { |
| 4984 | ASSERT(tag == 0 || IsPowerOf2(tag)); |
| 4985 | __ And(at, scratch, mask); |
| 4986 | DeoptimizeIf(tag == 0 ? ne : eq, instr->environment(), |
| 4987 | at, Operand(zero_reg)); |
| 4988 | } else { |
| 4989 | __ And(scratch, scratch, Operand(mask)); |
| 4990 | DeoptimizeIf(ne, instr->environment(), scratch, Operand(tag)); |
| 4991 | } |
| 4992 | } |
| 4993 | } |
| 4994 | |
| 4995 | |
| 4996 | void LCodeGen::DoCheckFunction(LCheckFunction* instr) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4997 | Register reg = ToRegister(instr->value()); |
| 4998 | Handle<JSFunction> target = instr->hydrogen()->target(); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 4999 | ALLOW_HANDLE_DEREF(isolate(), "smi check"); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5000 | if (isolate()->heap()->InNewSpace(*target)) { |
| 5001 | Register reg = ToRegister(instr->value()); |
| 5002 | Handle<JSGlobalPropertyCell> cell = |
| 5003 | isolate()->factory()->NewJSGlobalPropertyCell(target); |
| 5004 | __ li(at, Operand(Handle<Object>(cell))); |
| 5005 | __ lw(at, FieldMemOperand(at, JSGlobalPropertyCell::kValueOffset)); |
| 5006 | DeoptimizeIf(ne, instr->environment(), reg, |
| 5007 | Operand(at)); |
| 5008 | } else { |
| 5009 | DeoptimizeIf(ne, instr->environment(), reg, |
| 5010 | Operand(target)); |
| 5011 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5012 | } |
| 5013 | |
| 5014 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5015 | void LCodeGen::DoCheckMapCommon(Register map_reg, |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 5016 | Handle<Map> map, |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 5017 | LEnvironment* env) { |
| 5018 | Label success; |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5019 | __ CompareMapAndBranch(map_reg, map, &success, eq, &success); |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 5020 | DeoptimizeIf(al, env); |
| 5021 | __ bind(&success); |
| 5022 | } |
| 5023 | |
| 5024 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5025 | void LCodeGen::DoCheckMaps(LCheckMaps* instr) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5026 | Register map_reg = scratch0(); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5027 | LOperand* input = instr->value(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5028 | ASSERT(input->IsRegister()); |
| 5029 | Register reg = ToRegister(input); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5030 | Label success; |
| 5031 | SmallMapList* map_set = instr->hydrogen()->map_set(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5032 | __ lw(map_reg, FieldMemOperand(reg, HeapObject::kMapOffset)); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5033 | for (int i = 0; i < map_set->length() - 1; i++) { |
| 5034 | Handle<Map> map = map_set->at(i); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5035 | __ CompareMapAndBranch(map_reg, map, &success, eq, &success); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5036 | } |
| 5037 | Handle<Map> map = map_set->last(); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5038 | DoCheckMapCommon(map_reg, map, instr->environment()); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5039 | __ bind(&success); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5040 | } |
| 5041 | |
| 5042 | |
| 5043 | void LCodeGen::DoClampDToUint8(LClampDToUint8* instr) { |
| 5044 | DoubleRegister value_reg = ToDoubleRegister(instr->unclamped()); |
| 5045 | Register result_reg = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5046 | DoubleRegister temp_reg = ToDoubleRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5047 | __ ClampDoubleToUint8(result_reg, value_reg, temp_reg); |
| 5048 | } |
| 5049 | |
| 5050 | |
| 5051 | void LCodeGen::DoClampIToUint8(LClampIToUint8* instr) { |
| 5052 | Register unclamped_reg = ToRegister(instr->unclamped()); |
| 5053 | Register result_reg = ToRegister(instr->result()); |
| 5054 | __ ClampUint8(result_reg, unclamped_reg); |
| 5055 | } |
| 5056 | |
| 5057 | |
| 5058 | void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) { |
| 5059 | Register scratch = scratch0(); |
| 5060 | Register input_reg = ToRegister(instr->unclamped()); |
| 5061 | Register result_reg = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5062 | DoubleRegister temp_reg = ToDoubleRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5063 | Label is_smi, done, heap_number; |
| 5064 | |
| 5065 | // Both smi and heap number cases are handled. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 5066 | __ UntagAndJumpIfSmi(scratch, input_reg, &is_smi); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5067 | |
| 5068 | // Check for heap number |
| 5069 | __ lw(scratch, FieldMemOperand(input_reg, HeapObject::kMapOffset)); |
| 5070 | __ Branch(&heap_number, eq, scratch, Operand(factory()->heap_number_map())); |
| 5071 | |
| 5072 | // Check for undefined. Undefined is converted to zero for clamping |
| 5073 | // conversions. |
| 5074 | DeoptimizeIf(ne, instr->environment(), input_reg, |
| 5075 | Operand(factory()->undefined_value())); |
| 5076 | __ mov(result_reg, zero_reg); |
| 5077 | __ jmp(&done); |
| 5078 | |
| 5079 | // Heap number |
| 5080 | __ bind(&heap_number); |
| 5081 | __ ldc1(double_scratch0(), FieldMemOperand(input_reg, |
| 5082 | HeapNumber::kValueOffset)); |
| 5083 | __ ClampDoubleToUint8(result_reg, double_scratch0(), temp_reg); |
| 5084 | __ jmp(&done); |
| 5085 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5086 | __ bind(&is_smi); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5087 | __ ClampUint8(result_reg, scratch); |
| 5088 | |
| 5089 | __ bind(&done); |
| 5090 | } |
| 5091 | |
| 5092 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5093 | void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5094 | Register prototype_reg = ToRegister(instr->temp()); |
| 5095 | Register map_reg = ToRegister(instr->temp2()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5096 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 5097 | ZoneList<Handle<JSObject> >* prototypes = instr->prototypes(); |
| 5098 | ZoneList<Handle<Map> >* maps = instr->maps(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5099 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 5100 | ASSERT(prototypes->length() == maps->length()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5101 | |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 5102 | if (instr->hydrogen()->CanOmitPrototypeChecks()) { |
| 5103 | for (int i = 0; i < maps->length(); i++) { |
| 5104 | prototype_maps_.Add(maps->at(i), info()->zone()); |
| 5105 | } |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 5106 | } else { |
| 5107 | for (int i = 0; i < prototypes->length(); i++) { |
| 5108 | __ LoadHeapObject(prototype_reg, prototypes->at(i)); |
| 5109 | __ lw(map_reg, FieldMemOperand(prototype_reg, HeapObject::kMapOffset)); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 5110 | DoCheckMapCommon(map_reg, maps->at(i), instr->environment()); |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 5111 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5112 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5113 | } |
| 5114 | |
| 5115 | |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 5116 | void LCodeGen::DoAllocateObject(LAllocateObject* instr) { |
| 5117 | class DeferredAllocateObject: public LDeferredCode { |
| 5118 | public: |
| 5119 | DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) |
| 5120 | : LDeferredCode(codegen), instr_(instr) { } |
| 5121 | virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } |
| 5122 | virtual LInstruction* instr() { return instr_; } |
| 5123 | private: |
| 5124 | LAllocateObject* instr_; |
| 5125 | }; |
| 5126 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 5127 | DeferredAllocateObject* deferred = |
| 5128 | new(zone()) DeferredAllocateObject(this, instr); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 5129 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 5130 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5131 | Register scratch = ToRegister(instr->temp()); |
| 5132 | Register scratch2 = ToRegister(instr->temp2()); |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 5133 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 5134 | Handle<Map> initial_map = instr->hydrogen()->constructor_initial_map(); |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 5135 | int instance_size = initial_map->instance_size(); |
| 5136 | ASSERT(initial_map->pre_allocated_property_fields() + |
| 5137 | initial_map->unused_property_fields() - |
| 5138 | initial_map->inobject_properties() == 0); |
| 5139 | |
jkummerow@chromium.org | 4c54a2a | 2013-03-19 17:51:30 +0000 | [diff] [blame] | 5140 | __ Allocate(instance_size, result, scratch, scratch2, deferred->entry(), |
| 5141 | TAG_OBJECT); |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 5142 | |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 5143 | __ bind(deferred->exit()); |
| 5144 | if (FLAG_debug_code) { |
| 5145 | Label is_in_new_space; |
| 5146 | __ JumpIfInNewSpace(result, scratch, &is_in_new_space); |
| 5147 | __ Abort("Allocated object is not in new-space"); |
| 5148 | __ bind(&is_in_new_space); |
| 5149 | } |
| 5150 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 5151 | // Load the initial map. |
| 5152 | Register map = scratch; |
| 5153 | __ LoadHeapObject(map, constructor); |
| 5154 | __ lw(map, FieldMemOperand(map, JSFunction::kPrototypeOrInitialMapOffset)); |
| 5155 | |
| 5156 | // Initialize map and fields of the newly allocated object. |
| 5157 | ASSERT(initial_map->instance_type() == JS_OBJECT_TYPE); |
| 5158 | __ sw(map, FieldMemOperand(result, JSObject::kMapOffset)); |
| 5159 | __ LoadRoot(scratch, Heap::kEmptyFixedArrayRootIndex); |
| 5160 | __ sw(scratch, FieldMemOperand(result, JSObject::kElementsOffset)); |
| 5161 | __ sw(scratch, FieldMemOperand(result, JSObject::kPropertiesOffset)); |
| 5162 | if (initial_map->inobject_properties() != 0) { |
| 5163 | __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 5164 | for (int i = 0; i < initial_map->inobject_properties(); i++) { |
| 5165 | int property_offset = JSObject::kHeaderSize + i * kPointerSize; |
| 5166 | __ sw(scratch, FieldMemOperand(result, property_offset)); |
| 5167 | } |
| 5168 | } |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 5169 | } |
| 5170 | |
| 5171 | |
| 5172 | void LCodeGen::DoDeferredAllocateObject(LAllocateObject* instr) { |
| 5173 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 5174 | Handle<Map> initial_map = instr->hydrogen()->constructor_initial_map(); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 5175 | int instance_size = initial_map->instance_size(); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 5176 | |
| 5177 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 5178 | // result register contain a valid pointer because it is already |
| 5179 | // contained in the register pointer map. |
| 5180 | __ mov(result, zero_reg); |
| 5181 | |
| 5182 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 5183 | __ li(a0, Operand(Smi::FromInt(instance_size))); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 5184 | __ push(a0); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 5185 | CallRuntimeFromDeferred(Runtime::kAllocateInNewSpace, 1, instr); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 5186 | __ StoreToSafepointRegisterSlot(v0, result); |
| 5187 | } |
| 5188 | |
| 5189 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5190 | void LCodeGen::DoAllocate(LAllocate* instr) { |
| 5191 | class DeferredAllocate: public LDeferredCode { |
| 5192 | public: |
| 5193 | DeferredAllocate(LCodeGen* codegen, LAllocate* instr) |
| 5194 | : LDeferredCode(codegen), instr_(instr) { } |
| 5195 | virtual void Generate() { codegen()->DoDeferredAllocate(instr_); } |
| 5196 | virtual LInstruction* instr() { return instr_; } |
| 5197 | private: |
| 5198 | LAllocate* instr_; |
| 5199 | }; |
| 5200 | |
| 5201 | DeferredAllocate* deferred = |
| 5202 | new(zone()) DeferredAllocate(this, instr); |
| 5203 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5204 | Register result = ToRegister(instr->result()); |
| 5205 | Register scratch = ToRegister(instr->temp1()); |
| 5206 | Register scratch2 = ToRegister(instr->temp2()); |
| 5207 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5208 | // Allocate memory for the object. |
| 5209 | AllocationFlags flags = TAG_OBJECT; |
| 5210 | if (instr->hydrogen()->MustAllocateDoubleAligned()) { |
| 5211 | flags = static_cast<AllocationFlags>(flags | DOUBLE_ALIGNMENT); |
| 5212 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5213 | if (instr->hydrogen()->CanAllocateInOldPointerSpace()) { |
| 5214 | flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_POINTER_SPACE); |
| 5215 | } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5216 | if (instr->size()->IsConstantOperand()) { |
| 5217 | int32_t size = ToInteger32(LConstantOperand::cast(instr->size())); |
jkummerow@chromium.org | 4c54a2a | 2013-03-19 17:51:30 +0000 | [diff] [blame] | 5218 | __ Allocate(size, result, scratch, scratch2, deferred->entry(), flags); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5219 | } else { |
| 5220 | Register size = ToRegister(instr->size()); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5221 | __ Allocate(size, |
| 5222 | result, |
| 5223 | scratch, |
| 5224 | scratch2, |
| 5225 | deferred->entry(), |
| 5226 | flags); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5227 | } |
| 5228 | |
| 5229 | __ bind(deferred->exit()); |
| 5230 | } |
| 5231 | |
| 5232 | |
| 5233 | void LCodeGen::DoDeferredAllocate(LAllocate* instr) { |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5234 | Register result = ToRegister(instr->result()); |
| 5235 | |
| 5236 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 5237 | // result register contain a valid pointer because it is already |
| 5238 | // contained in the register pointer map. |
| 5239 | __ mov(result, zero_reg); |
| 5240 | |
| 5241 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 5242 | if (instr->size()->IsRegister()) { |
| 5243 | Register size = ToRegister(instr->size()); |
| 5244 | ASSERT(!size.is(result)); |
| 5245 | __ SmiTag(size); |
| 5246 | __ push(size); |
| 5247 | } else { |
| 5248 | int32_t size = ToInteger32(LConstantOperand::cast(instr->size())); |
| 5249 | __ Push(Smi::FromInt(size)); |
| 5250 | } |
| 5251 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5252 | if (instr->hydrogen()->CanAllocateInOldPointerSpace()) { |
| 5253 | CallRuntimeFromDeferred( |
| 5254 | Runtime::kAllocateInOldPointerSpace, 1, instr); |
| 5255 | } else { |
| 5256 | CallRuntimeFromDeferred( |
| 5257 | Runtime::kAllocateInNewSpace, 1, instr); |
| 5258 | } |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5259 | __ StoreToSafepointRegisterSlot(v0, result); |
| 5260 | } |
| 5261 | |
| 5262 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5263 | void LCodeGen::DoToFastProperties(LToFastProperties* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5264 | ASSERT(ToRegister(instr->value()).is(a0)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5265 | ASSERT(ToRegister(instr->result()).is(v0)); |
| 5266 | __ push(a0); |
| 5267 | CallRuntime(Runtime::kToFastProperties, 1, instr); |
| 5268 | } |
| 5269 | |
| 5270 | |
| 5271 | void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) { |
| 5272 | Label materialized; |
| 5273 | // Registers will be used as follows: |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5274 | // t3 = literals array. |
| 5275 | // a1 = regexp literal. |
| 5276 | // a0 = regexp literal clone. |
| 5277 | // a2 and t0-t2 are used as temporaries. |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 5278 | int literal_offset = |
| 5279 | FixedArray::OffsetOfElementAt(instr->hydrogen()->literal_index()); |
| 5280 | __ LoadHeapObject(t3, instr->hydrogen()->literals()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5281 | __ lw(a1, FieldMemOperand(t3, literal_offset)); |
| 5282 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 5283 | __ Branch(&materialized, ne, a1, Operand(at)); |
| 5284 | |
| 5285 | // Create regexp literal using runtime function |
| 5286 | // Result will be in v0. |
| 5287 | __ li(t2, Operand(Smi::FromInt(instr->hydrogen()->literal_index()))); |
| 5288 | __ li(t1, Operand(instr->hydrogen()->pattern())); |
| 5289 | __ li(t0, Operand(instr->hydrogen()->flags())); |
| 5290 | __ Push(t3, t2, t1, t0); |
| 5291 | CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr); |
| 5292 | __ mov(a1, v0); |
| 5293 | |
| 5294 | __ bind(&materialized); |
| 5295 | int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 5296 | Label allocated, runtime_allocate; |
| 5297 | |
jkummerow@chromium.org | 4c54a2a | 2013-03-19 17:51:30 +0000 | [diff] [blame] | 5298 | __ Allocate(size, v0, a2, a3, &runtime_allocate, TAG_OBJECT); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5299 | __ jmp(&allocated); |
| 5300 | |
| 5301 | __ bind(&runtime_allocate); |
| 5302 | __ li(a0, Operand(Smi::FromInt(size))); |
| 5303 | __ Push(a1, a0); |
| 5304 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
| 5305 | __ pop(a1); |
| 5306 | |
| 5307 | __ bind(&allocated); |
| 5308 | // Copy the content into the newly allocated memory. |
| 5309 | // (Unroll copy loop once for better throughput). |
| 5310 | for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
| 5311 | __ lw(a3, FieldMemOperand(a1, i)); |
| 5312 | __ lw(a2, FieldMemOperand(a1, i + kPointerSize)); |
| 5313 | __ sw(a3, FieldMemOperand(v0, i)); |
| 5314 | __ sw(a2, FieldMemOperand(v0, i + kPointerSize)); |
| 5315 | } |
| 5316 | if ((size % (2 * kPointerSize)) != 0) { |
| 5317 | __ lw(a3, FieldMemOperand(a1, size - kPointerSize)); |
| 5318 | __ sw(a3, FieldMemOperand(v0, size - kPointerSize)); |
| 5319 | } |
| 5320 | } |
| 5321 | |
| 5322 | |
| 5323 | void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) { |
| 5324 | // Use the fast case closure allocation code that allocates in new |
| 5325 | // space for nested functions that don't need literals cloning. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5326 | bool pretenure = instr->hydrogen()->pretenure(); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 5327 | if (!pretenure && instr->hydrogen()->has_no_literals()) { |
| 5328 | FastNewClosureStub stub(instr->hydrogen()->language_mode(), |
| 5329 | instr->hydrogen()->is_generator()); |
| 5330 | __ li(a1, Operand(instr->hydrogen()->shared_info())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5331 | __ push(a1); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 5332 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5333 | } else { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 5334 | __ li(a2, Operand(instr->hydrogen()->shared_info())); |
| 5335 | __ li(a1, Operand(pretenure ? factory()->true_value() |
| 5336 | : factory()->false_value())); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5337 | __ Push(cp, a2, a1); |
| 5338 | CallRuntime(Runtime::kNewClosure, 3, instr); |
| 5339 | } |
| 5340 | } |
| 5341 | |
| 5342 | |
| 5343 | void LCodeGen::DoTypeof(LTypeof* instr) { |
| 5344 | ASSERT(ToRegister(instr->result()).is(v0)); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5345 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5346 | __ push(input); |
| 5347 | CallRuntime(Runtime::kTypeof, 1, instr); |
| 5348 | } |
| 5349 | |
| 5350 | |
| 5351 | void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5352 | Register input = ToRegister(instr->value()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5353 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 5354 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 5355 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 5356 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 5357 | |
| 5358 | Register cmp1 = no_reg; |
| 5359 | Operand cmp2 = Operand(no_reg); |
| 5360 | |
| 5361 | Condition final_branch_condition = EmitTypeofIs(true_label, |
| 5362 | false_label, |
| 5363 | input, |
| 5364 | instr->type_literal(), |
| 5365 | cmp1, |
| 5366 | cmp2); |
| 5367 | |
| 5368 | ASSERT(cmp1.is_valid()); |
| 5369 | ASSERT(!cmp2.is_reg() || cmp2.rm().is_valid()); |
| 5370 | |
| 5371 | if (final_branch_condition != kNoCondition) { |
| 5372 | EmitBranch(true_block, false_block, final_branch_condition, cmp1, cmp2); |
| 5373 | } |
| 5374 | } |
| 5375 | |
| 5376 | |
| 5377 | Condition LCodeGen::EmitTypeofIs(Label* true_label, |
| 5378 | Label* false_label, |
| 5379 | Register input, |
| 5380 | Handle<String> type_name, |
| 5381 | Register& cmp1, |
| 5382 | Operand& cmp2) { |
| 5383 | // This function utilizes the delay slot heavily. This is used to load |
| 5384 | // values that are always usable without depending on the type of the input |
| 5385 | // register. |
| 5386 | Condition final_branch_condition = kNoCondition; |
| 5387 | Register scratch = scratch0(); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5388 | if (type_name->Equals(heap()->number_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5389 | __ JumpIfSmi(input, true_label); |
| 5390 | __ lw(input, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 5391 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 5392 | cmp1 = input; |
| 5393 | cmp2 = Operand(at); |
| 5394 | final_branch_condition = eq; |
| 5395 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5396 | } else if (type_name->Equals(heap()->string_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5397 | __ JumpIfSmi(input, false_label); |
| 5398 | __ GetObjectType(input, input, scratch); |
| 5399 | __ Branch(USE_DELAY_SLOT, false_label, |
| 5400 | ge, scratch, Operand(FIRST_NONSTRING_TYPE)); |
| 5401 | // input is an object so we can load the BitFieldOffset even if we take the |
| 5402 | // other branch. |
| 5403 | __ lbu(at, FieldMemOperand(input, Map::kBitFieldOffset)); |
| 5404 | __ And(at, at, 1 << Map::kIsUndetectable); |
| 5405 | cmp1 = at; |
| 5406 | cmp2 = Operand(zero_reg); |
| 5407 | final_branch_condition = eq; |
| 5408 | |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5409 | } else if (type_name->Equals(heap()->symbol_string())) { |
| 5410 | __ JumpIfSmi(input, false_label); |
| 5411 | __ GetObjectType(input, input, scratch); |
| 5412 | cmp1 = scratch; |
| 5413 | cmp2 = Operand(SYMBOL_TYPE); |
| 5414 | final_branch_condition = eq; |
| 5415 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5416 | } else if (type_name->Equals(heap()->boolean_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5417 | __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| 5418 | __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input)); |
| 5419 | __ LoadRoot(at, Heap::kFalseValueRootIndex); |
| 5420 | cmp1 = at; |
| 5421 | cmp2 = Operand(input); |
| 5422 | final_branch_condition = eq; |
| 5423 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5424 | } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5425 | __ LoadRoot(at, Heap::kNullValueRootIndex); |
| 5426 | cmp1 = at; |
| 5427 | cmp2 = Operand(input); |
| 5428 | final_branch_condition = eq; |
| 5429 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5430 | } else if (type_name->Equals(heap()->undefined_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5431 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 5432 | __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input)); |
| 5433 | // The first instruction of JumpIfSmi is an And - it is safe in the delay |
| 5434 | // slot. |
| 5435 | __ JumpIfSmi(input, false_label); |
| 5436 | // Check for undetectable objects => true. |
| 5437 | __ lw(input, FieldMemOperand(input, HeapObject::kMapOffset)); |
| 5438 | __ lbu(at, FieldMemOperand(input, Map::kBitFieldOffset)); |
| 5439 | __ And(at, at, 1 << Map::kIsUndetectable); |
| 5440 | cmp1 = at; |
| 5441 | cmp2 = Operand(zero_reg); |
| 5442 | final_branch_condition = ne; |
| 5443 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5444 | } else if (type_name->Equals(heap()->function_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5445 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 5446 | __ JumpIfSmi(input, false_label); |
| 5447 | __ GetObjectType(input, scratch, input); |
| 5448 | __ Branch(true_label, eq, input, Operand(JS_FUNCTION_TYPE)); |
| 5449 | cmp1 = input; |
| 5450 | cmp2 = Operand(JS_FUNCTION_PROXY_TYPE); |
| 5451 | final_branch_condition = eq; |
| 5452 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 5453 | } else if (type_name->Equals(heap()->object_string())) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5454 | __ JumpIfSmi(input, false_label); |
| 5455 | if (!FLAG_harmony_typeof) { |
| 5456 | __ LoadRoot(at, Heap::kNullValueRootIndex); |
| 5457 | __ Branch(USE_DELAY_SLOT, true_label, eq, at, Operand(input)); |
| 5458 | } |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5459 | Register map = input; |
| 5460 | __ GetObjectType(input, map, scratch); |
| 5461 | __ Branch(false_label, |
| 5462 | lt, scratch, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5463 | __ Branch(USE_DELAY_SLOT, false_label, |
| 5464 | gt, scratch, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5465 | // 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] | 5466 | // Check for undetectable objects => false. |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5467 | __ lbu(at, FieldMemOperand(map, Map::kBitFieldOffset)); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5468 | __ And(at, at, 1 << Map::kIsUndetectable); |
| 5469 | cmp1 = at; |
| 5470 | cmp2 = Operand(zero_reg); |
| 5471 | final_branch_condition = eq; |
| 5472 | |
| 5473 | } else { |
| 5474 | cmp1 = at; |
| 5475 | cmp2 = Operand(zero_reg); // Set to valid regs, to avoid caller assertion. |
| 5476 | __ Branch(false_label); |
| 5477 | } |
| 5478 | |
| 5479 | return final_branch_condition; |
| 5480 | } |
| 5481 | |
| 5482 | |
| 5483 | void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 5484 | Register temp1 = ToRegister(instr->temp()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5485 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 5486 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 5487 | |
| 5488 | EmitIsConstructCall(temp1, scratch0()); |
| 5489 | |
| 5490 | EmitBranch(true_block, false_block, eq, temp1, |
| 5491 | Operand(Smi::FromInt(StackFrame::CONSTRUCT))); |
| 5492 | } |
| 5493 | |
| 5494 | |
| 5495 | void LCodeGen::EmitIsConstructCall(Register temp1, Register temp2) { |
| 5496 | ASSERT(!temp1.is(temp2)); |
| 5497 | // Get the frame pointer for the calling frame. |
| 5498 | __ lw(temp1, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 5499 | |
| 5500 | // Skip the arguments adaptor frame if it exists. |
| 5501 | Label check_frame_marker; |
| 5502 | __ lw(temp2, MemOperand(temp1, StandardFrameConstants::kContextOffset)); |
| 5503 | __ Branch(&check_frame_marker, ne, temp2, |
| 5504 | Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 5505 | __ lw(temp1, MemOperand(temp1, StandardFrameConstants::kCallerFPOffset)); |
| 5506 | |
| 5507 | // Check the marker in the calling frame. |
| 5508 | __ bind(&check_frame_marker); |
| 5509 | __ lw(temp1, MemOperand(temp1, StandardFrameConstants::kMarkerOffset)); |
| 5510 | } |
| 5511 | |
| 5512 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5513 | void LCodeGen::EnsureSpaceForLazyDeopt() { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5514 | if (info()->IsStub()) return; |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5515 | // Ensure that we have enough space after the previous lazy-bailout |
| 5516 | // instruction for patching the code here. |
| 5517 | int current_pc = masm()->pc_offset(); |
| 5518 | int patch_size = Deoptimizer::patch_size(); |
| 5519 | if (current_pc < last_lazy_deopt_pc_ + patch_size) { |
| 5520 | int padding_size = last_lazy_deopt_pc_ + patch_size - current_pc; |
| 5521 | ASSERT_EQ(0, padding_size % Assembler::kInstrSize); |
| 5522 | while (padding_size > 0) { |
| 5523 | __ nop(); |
| 5524 | padding_size -= Assembler::kInstrSize; |
| 5525 | } |
| 5526 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5527 | last_lazy_deopt_pc_ = masm()->pc_offset(); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5528 | } |
| 5529 | |
| 5530 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5531 | void LCodeGen::DoLazyBailout(LLazyBailout* instr) { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5532 | EnsureSpaceForLazyDeopt(); |
| 5533 | ASSERT(instr->HasEnvironment()); |
| 5534 | LEnvironment* env = instr->environment(); |
| 5535 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5536 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5537 | } |
| 5538 | |
| 5539 | |
| 5540 | void LCodeGen::DoDeoptimize(LDeoptimize* instr) { |
palfia@homejinni.com | 0410973 | 2013-05-15 09:50:32 +0000 | [diff] [blame] | 5541 | if (instr->hydrogen_value()->IsSoftDeoptimize()) { |
| 5542 | SoftDeoptimize(instr->environment(), zero_reg, Operand(zero_reg)); |
| 5543 | } else { |
| 5544 | DeoptimizeIf(al, instr->environment(), zero_reg, Operand(zero_reg)); |
| 5545 | } |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5546 | } |
| 5547 | |
| 5548 | |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 5549 | void LCodeGen::DoDummyUse(LDummyUse* instr) { |
| 5550 | // Nothing to see here, move on! |
| 5551 | } |
| 5552 | |
| 5553 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5554 | void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) { |
| 5555 | Register object = ToRegister(instr->object()); |
| 5556 | Register key = ToRegister(instr->key()); |
| 5557 | Register strict = scratch0(); |
| 5558 | __ li(strict, Operand(Smi::FromInt(strict_mode_flag()))); |
| 5559 | __ Push(object, key, strict); |
danno@chromium.org | e4bfb26 | 2012-05-04 10:50:07 +0000 | [diff] [blame] | 5560 | ASSERT(instr->HasPointerMap()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5561 | LPointerMap* pointers = instr->pointer_map(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5562 | RecordPosition(pointers->position()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5563 | SafepointGenerator safepoint_generator( |
| 5564 | this, pointers, Safepoint::kLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5565 | __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION, safepoint_generator); |
| 5566 | } |
| 5567 | |
| 5568 | |
| 5569 | void LCodeGen::DoIn(LIn* instr) { |
| 5570 | Register obj = ToRegister(instr->object()); |
| 5571 | Register key = ToRegister(instr->key()); |
| 5572 | __ Push(key, obj); |
danno@chromium.org | e4bfb26 | 2012-05-04 10:50:07 +0000 | [diff] [blame] | 5573 | ASSERT(instr->HasPointerMap()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5574 | LPointerMap* pointers = instr->pointer_map(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5575 | RecordPosition(pointers->position()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5576 | SafepointGenerator safepoint_generator(this, pointers, Safepoint::kLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5577 | __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator); |
| 5578 | } |
| 5579 | |
| 5580 | |
| 5581 | void LCodeGen::DoDeferredStackCheck(LStackCheck* instr) { |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5582 | PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
| 5583 | __ CallRuntimeSaveDoubles(Runtime::kStackGuard); |
| 5584 | RecordSafepointWithLazyDeopt( |
| 5585 | instr, RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 5586 | ASSERT(instr->HasEnvironment()); |
| 5587 | LEnvironment* env = instr->environment(); |
| 5588 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5589 | } |
| 5590 | |
| 5591 | |
| 5592 | void LCodeGen::DoStackCheck(LStackCheck* instr) { |
| 5593 | class DeferredStackCheck: public LDeferredCode { |
| 5594 | public: |
| 5595 | DeferredStackCheck(LCodeGen* codegen, LStackCheck* instr) |
| 5596 | : LDeferredCode(codegen), instr_(instr) { } |
| 5597 | virtual void Generate() { codegen()->DoDeferredStackCheck(instr_); } |
| 5598 | virtual LInstruction* instr() { return instr_; } |
| 5599 | private: |
| 5600 | LStackCheck* instr_; |
| 5601 | }; |
| 5602 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5603 | ASSERT(instr->HasEnvironment()); |
| 5604 | LEnvironment* env = instr->environment(); |
| 5605 | // There is no LLazyBailout instruction for stack-checks. We have to |
| 5606 | // prepare for lazy deoptimization explicitly here. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5607 | if (instr->hydrogen()->is_function_entry()) { |
| 5608 | // Perform stack overflow check. |
| 5609 | Label done; |
| 5610 | __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| 5611 | __ Branch(&done, hs, sp, Operand(at)); |
| 5612 | StackCheckStub stub; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 5613 | CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5614 | EnsureSpaceForLazyDeopt(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5615 | __ bind(&done); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5616 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5617 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5618 | } else { |
| 5619 | ASSERT(instr->hydrogen()->is_backwards_branch()); |
| 5620 | // Perform stack overflow check if this goto needs it before jumping. |
| 5621 | DeferredStackCheck* deferred_stack_check = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 5622 | new(zone()) DeferredStackCheck(this, instr); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5623 | __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| 5624 | __ Branch(deferred_stack_check->entry(), lo, sp, Operand(at)); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5625 | EnsureSpaceForLazyDeopt(); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5626 | __ bind(instr->done_label()); |
| 5627 | deferred_stack_check->SetExit(instr->done_label()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5628 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5629 | // Don't record a deoptimization index for the safepoint here. |
| 5630 | // This will be done explicitly when emitting call and the safepoint in |
| 5631 | // the deferred code. |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5632 | } |
| 5633 | } |
| 5634 | |
| 5635 | |
| 5636 | void LCodeGen::DoOsrEntry(LOsrEntry* instr) { |
| 5637 | // This is a pseudo-instruction that ensures that the environment here is |
| 5638 | // properly registered for deoptimization and records the assembler's PC |
| 5639 | // offset. |
| 5640 | LEnvironment* environment = instr->environment(); |
| 5641 | environment->SetSpilledRegisters(instr->SpilledRegisterArray(), |
| 5642 | instr->SpilledDoubleRegisterArray()); |
| 5643 | |
| 5644 | // If the environment were already registered, we would have no way of |
| 5645 | // backpatching it with the spill slot operands. |
| 5646 | ASSERT(!environment->HasBeenRegistered()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5647 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5648 | ASSERT(osr_pc_offset_ == -1); |
| 5649 | osr_pc_offset_ = masm()->pc_offset(); |
| 5650 | } |
| 5651 | |
| 5652 | |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 5653 | void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) { |
| 5654 | Register result = ToRegister(instr->result()); |
| 5655 | Register object = ToRegister(instr->object()); |
| 5656 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 5657 | DeoptimizeIf(eq, instr->environment(), object, Operand(at)); |
| 5658 | |
| 5659 | Register null_value = t1; |
| 5660 | __ LoadRoot(null_value, Heap::kNullValueRootIndex); |
| 5661 | DeoptimizeIf(eq, instr->environment(), object, Operand(null_value)); |
| 5662 | |
| 5663 | __ And(at, object, kSmiTagMask); |
| 5664 | DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg)); |
| 5665 | |
| 5666 | STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
| 5667 | __ GetObjectType(object, a1, a1); |
| 5668 | DeoptimizeIf(le, instr->environment(), a1, Operand(LAST_JS_PROXY_TYPE)); |
| 5669 | |
| 5670 | Label use_cache, call_runtime; |
| 5671 | ASSERT(object.is(a0)); |
| 5672 | __ CheckEnumCache(null_value, &call_runtime); |
| 5673 | |
| 5674 | __ lw(result, FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5675 | __ Branch(&use_cache); |
| 5676 | |
| 5677 | // Get the set of properties to enumerate. |
| 5678 | __ bind(&call_runtime); |
| 5679 | __ push(object); |
| 5680 | CallRuntime(Runtime::kGetPropertyNamesFast, 1, instr); |
| 5681 | |
| 5682 | __ lw(a1, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| 5683 | ASSERT(result.is(v0)); |
| 5684 | __ LoadRoot(at, Heap::kMetaMapRootIndex); |
| 5685 | DeoptimizeIf(ne, instr->environment(), a1, Operand(at)); |
| 5686 | __ bind(&use_cache); |
| 5687 | } |
| 5688 | |
| 5689 | |
| 5690 | void LCodeGen::DoForInCacheArray(LForInCacheArray* instr) { |
| 5691 | Register map = ToRegister(instr->map()); |
| 5692 | Register result = ToRegister(instr->result()); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 5693 | Label load_cache, done; |
| 5694 | __ EnumLength(result, map); |
| 5695 | __ Branch(&load_cache, ne, result, Operand(Smi::FromInt(0))); |
| 5696 | __ li(result, Operand(isolate()->factory()->empty_fixed_array())); |
| 5697 | __ jmp(&done); |
| 5698 | |
| 5699 | __ bind(&load_cache); |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 5700 | __ LoadInstanceDescriptors(map, result); |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 5701 | __ lw(result, |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 5702 | FieldMemOperand(result, DescriptorArray::kEnumCacheOffset)); |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 5703 | __ lw(result, |
| 5704 | FieldMemOperand(result, FixedArray::SizeFor(instr->idx()))); |
| 5705 | DeoptimizeIf(eq, instr->environment(), result, Operand(zero_reg)); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 5706 | |
| 5707 | __ bind(&done); |
ulan@chromium.org | 812308e | 2012-02-29 15:58:45 +0000 | [diff] [blame] | 5708 | } |
| 5709 | |
| 5710 | |
| 5711 | void LCodeGen::DoCheckMapValue(LCheckMapValue* instr) { |
| 5712 | Register object = ToRegister(instr->value()); |
| 5713 | Register map = ToRegister(instr->map()); |
| 5714 | __ lw(scratch0(), FieldMemOperand(object, HeapObject::kMapOffset)); |
| 5715 | DeoptimizeIf(ne, instr->environment(), map, Operand(scratch0())); |
| 5716 | } |
| 5717 | |
| 5718 | |
| 5719 | void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) { |
| 5720 | Register object = ToRegister(instr->object()); |
| 5721 | Register index = ToRegister(instr->index()); |
| 5722 | Register result = ToRegister(instr->result()); |
| 5723 | Register scratch = scratch0(); |
| 5724 | |
| 5725 | Label out_of_object, done; |
| 5726 | __ Branch(USE_DELAY_SLOT, &out_of_object, lt, index, Operand(zero_reg)); |
| 5727 | __ sll(scratch, index, kPointerSizeLog2 - kSmiTagSize); // In delay slot. |
| 5728 | |
| 5729 | STATIC_ASSERT(kPointerSizeLog2 > kSmiTagSize); |
| 5730 | __ Addu(scratch, object, scratch); |
| 5731 | __ lw(result, FieldMemOperand(scratch, JSObject::kHeaderSize)); |
| 5732 | |
| 5733 | __ Branch(&done); |
| 5734 | |
| 5735 | __ bind(&out_of_object); |
| 5736 | __ lw(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
| 5737 | // Index is equal to negated out of object property index plus 1. |
| 5738 | __ Subu(scratch, result, scratch); |
| 5739 | __ lw(result, FieldMemOperand(scratch, |
| 5740 | FixedArray::kHeaderSize - kPointerSize)); |
| 5741 | __ bind(&done); |
| 5742 | } |
| 5743 | |
| 5744 | |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5745 | #undef __ |
| 5746 | |
| 5747 | } } // namespace v8::internal |