Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/compiler/code-generator.h" |
| 6 | |
| 7 | #include "src/arm/macro-assembler-arm.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 8 | #include "src/ast/scopes.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/compiler/code-generator-impl.h" |
| 10 | #include "src/compiler/gap-resolver.h" |
| 11 | #include "src/compiler/node-matchers.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 12 | #include "src/compiler/osr.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | namespace compiler { |
| 17 | |
| 18 | #define __ masm()-> |
| 19 | |
| 20 | |
| 21 | #define kScratchReg r9 |
| 22 | |
| 23 | |
| 24 | // Adds Arm-specific methods to convert InstructionOperands. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 25 | class ArmOperandConverter final : public InstructionOperandConverter { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 26 | public: |
| 27 | ArmOperandConverter(CodeGenerator* gen, Instruction* instr) |
| 28 | : InstructionOperandConverter(gen, instr) {} |
| 29 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 30 | SwVfpRegister OutputFloat32Register(size_t index = 0) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 31 | return ToFloat32Register(instr_->OutputAt(index)); |
| 32 | } |
| 33 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 34 | SwVfpRegister InputFloat32Register(size_t index) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 35 | return ToFloat32Register(instr_->InputAt(index)); |
| 36 | } |
| 37 | |
| 38 | SwVfpRegister ToFloat32Register(InstructionOperand* op) { |
| 39 | return ToFloat64Register(op).low(); |
| 40 | } |
| 41 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 42 | LowDwVfpRegister OutputFloat64Register(size_t index = 0) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 43 | return ToFloat64Register(instr_->OutputAt(index)); |
| 44 | } |
| 45 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 46 | LowDwVfpRegister InputFloat64Register(size_t index) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 47 | return ToFloat64Register(instr_->InputAt(index)); |
| 48 | } |
| 49 | |
| 50 | LowDwVfpRegister ToFloat64Register(InstructionOperand* op) { |
| 51 | return LowDwVfpRegister::from_code(ToDoubleRegister(op).code()); |
| 52 | } |
| 53 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 54 | SBit OutputSBit() const { |
| 55 | switch (instr_->flags_mode()) { |
| 56 | case kFlags_branch: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 57 | case kFlags_deoptimize: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 58 | case kFlags_set: |
| 59 | return SetCC; |
| 60 | case kFlags_none: |
| 61 | return LeaveCC; |
| 62 | } |
| 63 | UNREACHABLE(); |
| 64 | return LeaveCC; |
| 65 | } |
| 66 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 67 | Operand InputImmediate(size_t index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 68 | Constant constant = ToConstant(instr_->InputAt(index)); |
| 69 | switch (constant.type()) { |
| 70 | case Constant::kInt32: |
| 71 | return Operand(constant.ToInt32()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 72 | case Constant::kFloat32: |
| 73 | return Operand( |
| 74 | isolate()->factory()->NewNumber(constant.ToFloat32(), TENURED)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 75 | case Constant::kFloat64: |
| 76 | return Operand( |
| 77 | isolate()->factory()->NewNumber(constant.ToFloat64(), TENURED)); |
| 78 | case Constant::kInt64: |
| 79 | case Constant::kExternalReference: |
| 80 | case Constant::kHeapObject: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 81 | case Constant::kRpoNumber: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 82 | break; |
| 83 | } |
| 84 | UNREACHABLE(); |
| 85 | return Operand::Zero(); |
| 86 | } |
| 87 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 88 | Operand InputOperand2(size_t first_index) { |
| 89 | const size_t index = first_index; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 90 | switch (AddressingModeField::decode(instr_->opcode())) { |
| 91 | case kMode_None: |
| 92 | case kMode_Offset_RI: |
| 93 | case kMode_Offset_RR: |
| 94 | break; |
| 95 | case kMode_Operand2_I: |
| 96 | return InputImmediate(index + 0); |
| 97 | case kMode_Operand2_R: |
| 98 | return Operand(InputRegister(index + 0)); |
| 99 | case kMode_Operand2_R_ASR_I: |
| 100 | return Operand(InputRegister(index + 0), ASR, InputInt5(index + 1)); |
| 101 | case kMode_Operand2_R_ASR_R: |
| 102 | return Operand(InputRegister(index + 0), ASR, InputRegister(index + 1)); |
| 103 | case kMode_Operand2_R_LSL_I: |
| 104 | return Operand(InputRegister(index + 0), LSL, InputInt5(index + 1)); |
| 105 | case kMode_Operand2_R_LSL_R: |
| 106 | return Operand(InputRegister(index + 0), LSL, InputRegister(index + 1)); |
| 107 | case kMode_Operand2_R_LSR_I: |
| 108 | return Operand(InputRegister(index + 0), LSR, InputInt5(index + 1)); |
| 109 | case kMode_Operand2_R_LSR_R: |
| 110 | return Operand(InputRegister(index + 0), LSR, InputRegister(index + 1)); |
| 111 | case kMode_Operand2_R_ROR_I: |
| 112 | return Operand(InputRegister(index + 0), ROR, InputInt5(index + 1)); |
| 113 | case kMode_Operand2_R_ROR_R: |
| 114 | return Operand(InputRegister(index + 0), ROR, InputRegister(index + 1)); |
| 115 | } |
| 116 | UNREACHABLE(); |
| 117 | return Operand::Zero(); |
| 118 | } |
| 119 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 120 | MemOperand InputOffset(size_t* first_index) { |
| 121 | const size_t index = *first_index; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 122 | switch (AddressingModeField::decode(instr_->opcode())) { |
| 123 | case kMode_None: |
| 124 | case kMode_Operand2_I: |
| 125 | case kMode_Operand2_R: |
| 126 | case kMode_Operand2_R_ASR_I: |
| 127 | case kMode_Operand2_R_ASR_R: |
| 128 | case kMode_Operand2_R_LSL_I: |
| 129 | case kMode_Operand2_R_LSL_R: |
| 130 | case kMode_Operand2_R_LSR_I: |
| 131 | case kMode_Operand2_R_LSR_R: |
| 132 | case kMode_Operand2_R_ROR_I: |
| 133 | case kMode_Operand2_R_ROR_R: |
| 134 | break; |
| 135 | case kMode_Offset_RI: |
| 136 | *first_index += 2; |
| 137 | return MemOperand(InputRegister(index + 0), InputInt32(index + 1)); |
| 138 | case kMode_Offset_RR: |
| 139 | *first_index += 2; |
| 140 | return MemOperand(InputRegister(index + 0), InputRegister(index + 1)); |
| 141 | } |
| 142 | UNREACHABLE(); |
| 143 | return MemOperand(r0); |
| 144 | } |
| 145 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 146 | MemOperand InputOffset(size_t first_index = 0) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 147 | return InputOffset(&first_index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | MemOperand ToMemOperand(InstructionOperand* op) const { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 151 | DCHECK_NOT_NULL(op); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 152 | DCHECK(op->IsStackSlot() || op->IsFPStackSlot()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 153 | return SlotToMemOperand(AllocatedOperand::cast(op)->index()); |
| 154 | } |
| 155 | |
| 156 | MemOperand SlotToMemOperand(int slot) const { |
| 157 | FrameOffset offset = frame_access_state()->GetFrameOffset(slot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 158 | return MemOperand(offset.from_stack_pointer() ? sp : fp, offset.offset()); |
| 159 | } |
| 160 | }; |
| 161 | |
| 162 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 163 | namespace { |
| 164 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 165 | class OutOfLineLoadFloat32 final : public OutOfLineCode { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 166 | public: |
| 167 | OutOfLineLoadFloat32(CodeGenerator* gen, SwVfpRegister result) |
| 168 | : OutOfLineCode(gen), result_(result) {} |
| 169 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 170 | void Generate() final { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 171 | // Compute sqrtf(-1.0f), which results in a quiet single-precision NaN. |
| 172 | __ vmov(result_, -1.0f); |
| 173 | __ vsqrt(result_, result_); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | private: |
| 177 | SwVfpRegister const result_; |
| 178 | }; |
| 179 | |
| 180 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 181 | class OutOfLineLoadFloat64 final : public OutOfLineCode { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 182 | public: |
| 183 | OutOfLineLoadFloat64(CodeGenerator* gen, DwVfpRegister result) |
| 184 | : OutOfLineCode(gen), result_(result) {} |
| 185 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 186 | void Generate() final { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 187 | // Compute sqrt(-1.0), which results in a quiet double-precision NaN. |
| 188 | __ vmov(result_, -1.0); |
| 189 | __ vsqrt(result_, result_); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | private: |
| 193 | DwVfpRegister const result_; |
| 194 | }; |
| 195 | |
| 196 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 197 | class OutOfLineLoadInteger final : public OutOfLineCode { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 198 | public: |
| 199 | OutOfLineLoadInteger(CodeGenerator* gen, Register result) |
| 200 | : OutOfLineCode(gen), result_(result) {} |
| 201 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 202 | void Generate() final { __ mov(result_, Operand::Zero()); } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 203 | |
| 204 | private: |
| 205 | Register const result_; |
| 206 | }; |
| 207 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 208 | |
| 209 | class OutOfLineRecordWrite final : public OutOfLineCode { |
| 210 | public: |
| 211 | OutOfLineRecordWrite(CodeGenerator* gen, Register object, Register index, |
| 212 | Register value, Register scratch0, Register scratch1, |
| 213 | RecordWriteMode mode) |
| 214 | : OutOfLineCode(gen), |
| 215 | object_(object), |
| 216 | index_(index), |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 217 | index_immediate_(0), |
| 218 | value_(value), |
| 219 | scratch0_(scratch0), |
| 220 | scratch1_(scratch1), |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 221 | mode_(mode), |
| 222 | must_save_lr_(!gen->frame_access_state()->has_frame()) {} |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 223 | |
| 224 | OutOfLineRecordWrite(CodeGenerator* gen, Register object, int32_t index, |
| 225 | Register value, Register scratch0, Register scratch1, |
| 226 | RecordWriteMode mode) |
| 227 | : OutOfLineCode(gen), |
| 228 | object_(object), |
| 229 | index_(no_reg), |
| 230 | index_immediate_(index), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 231 | value_(value), |
| 232 | scratch0_(scratch0), |
| 233 | scratch1_(scratch1), |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 234 | mode_(mode), |
| 235 | must_save_lr_(!gen->frame_access_state()->has_frame()) {} |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 236 | |
| 237 | void Generate() final { |
| 238 | if (mode_ > RecordWriteMode::kValueIsPointer) { |
| 239 | __ JumpIfSmi(value_, exit()); |
| 240 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 241 | __ CheckPageFlag(value_, scratch0_, |
| 242 | MemoryChunk::kPointersToHereAreInterestingMask, eq, |
| 243 | exit()); |
| 244 | RememberedSetAction const remembered_set_action = |
| 245 | mode_ > RecordWriteMode::kValueIsMap ? EMIT_REMEMBERED_SET |
| 246 | : OMIT_REMEMBERED_SET; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 247 | SaveFPRegsMode const save_fp_mode = |
| 248 | frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 249 | if (must_save_lr_) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 250 | // We need to save and restore lr if the frame was elided. |
| 251 | __ Push(lr); |
| 252 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 253 | RecordWriteStub stub(isolate(), object_, scratch0_, scratch1_, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 254 | remembered_set_action, save_fp_mode); |
| 255 | if (index_.is(no_reg)) { |
| 256 | __ add(scratch1_, object_, Operand(index_immediate_)); |
| 257 | } else { |
| 258 | DCHECK_EQ(0, index_immediate_); |
| 259 | __ add(scratch1_, object_, Operand(index_)); |
| 260 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 261 | __ CallStub(&stub); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 262 | if (must_save_lr_) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 263 | __ Pop(lr); |
| 264 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | private: |
| 268 | Register const object_; |
| 269 | Register const index_; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 270 | int32_t const index_immediate_; // Valid if index_.is(no_reg). |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 271 | Register const value_; |
| 272 | Register const scratch0_; |
| 273 | Register const scratch1_; |
| 274 | RecordWriteMode const mode_; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 275 | bool must_save_lr_; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 276 | }; |
| 277 | |
| 278 | |
| 279 | Condition FlagsConditionToCondition(FlagsCondition condition) { |
| 280 | switch (condition) { |
| 281 | case kEqual: |
| 282 | return eq; |
| 283 | case kNotEqual: |
| 284 | return ne; |
| 285 | case kSignedLessThan: |
| 286 | return lt; |
| 287 | case kSignedGreaterThanOrEqual: |
| 288 | return ge; |
| 289 | case kSignedLessThanOrEqual: |
| 290 | return le; |
| 291 | case kSignedGreaterThan: |
| 292 | return gt; |
| 293 | case kUnsignedLessThan: |
| 294 | return lo; |
| 295 | case kUnsignedGreaterThanOrEqual: |
| 296 | return hs; |
| 297 | case kUnsignedLessThanOrEqual: |
| 298 | return ls; |
| 299 | case kUnsignedGreaterThan: |
| 300 | return hi; |
| 301 | case kFloatLessThanOrUnordered: |
| 302 | return lt; |
| 303 | case kFloatGreaterThanOrEqual: |
| 304 | return ge; |
| 305 | case kFloatLessThanOrEqual: |
| 306 | return ls; |
| 307 | case kFloatGreaterThanOrUnordered: |
| 308 | return hi; |
| 309 | case kFloatLessThan: |
| 310 | return lo; |
| 311 | case kFloatGreaterThanOrEqualOrUnordered: |
| 312 | return hs; |
| 313 | case kFloatLessThanOrEqualOrUnordered: |
| 314 | return le; |
| 315 | case kFloatGreaterThan: |
| 316 | return gt; |
| 317 | case kOverflow: |
| 318 | return vs; |
| 319 | case kNotOverflow: |
| 320 | return vc; |
| 321 | default: |
| 322 | break; |
| 323 | } |
| 324 | UNREACHABLE(); |
| 325 | return kNoCondition; |
| 326 | } |
| 327 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 328 | } // namespace |
| 329 | |
| 330 | |
| 331 | #define ASSEMBLE_CHECKED_LOAD_FLOAT(width) \ |
| 332 | do { \ |
| 333 | auto result = i.OutputFloat##width##Register(); \ |
| 334 | auto offset = i.InputRegister(0); \ |
| 335 | if (instr->InputAt(1)->IsRegister()) { \ |
| 336 | __ cmp(offset, i.InputRegister(1)); \ |
| 337 | } else { \ |
| 338 | __ cmp(offset, i.InputImmediate(1)); \ |
| 339 | } \ |
| 340 | auto ool = new (zone()) OutOfLineLoadFloat##width(this, result); \ |
| 341 | __ b(hs, ool->entry()); \ |
| 342 | __ vldr(result, i.InputOffset(2)); \ |
| 343 | __ bind(ool->exit()); \ |
| 344 | DCHECK_EQ(LeaveCC, i.OutputSBit()); \ |
| 345 | } while (0) |
| 346 | |
| 347 | |
| 348 | #define ASSEMBLE_CHECKED_LOAD_INTEGER(asm_instr) \ |
| 349 | do { \ |
| 350 | auto result = i.OutputRegister(); \ |
| 351 | auto offset = i.InputRegister(0); \ |
| 352 | if (instr->InputAt(1)->IsRegister()) { \ |
| 353 | __ cmp(offset, i.InputRegister(1)); \ |
| 354 | } else { \ |
| 355 | __ cmp(offset, i.InputImmediate(1)); \ |
| 356 | } \ |
| 357 | auto ool = new (zone()) OutOfLineLoadInteger(this, result); \ |
| 358 | __ b(hs, ool->entry()); \ |
| 359 | __ asm_instr(result, i.InputOffset(2)); \ |
| 360 | __ bind(ool->exit()); \ |
| 361 | DCHECK_EQ(LeaveCC, i.OutputSBit()); \ |
| 362 | } while (0) |
| 363 | |
| 364 | |
| 365 | #define ASSEMBLE_CHECKED_STORE_FLOAT(width) \ |
| 366 | do { \ |
| 367 | auto offset = i.InputRegister(0); \ |
| 368 | if (instr->InputAt(1)->IsRegister()) { \ |
| 369 | __ cmp(offset, i.InputRegister(1)); \ |
| 370 | } else { \ |
| 371 | __ cmp(offset, i.InputImmediate(1)); \ |
| 372 | } \ |
| 373 | auto value = i.InputFloat##width##Register(2); \ |
| 374 | __ vstr(value, i.InputOffset(3), lo); \ |
| 375 | DCHECK_EQ(LeaveCC, i.OutputSBit()); \ |
| 376 | } while (0) |
| 377 | |
| 378 | |
| 379 | #define ASSEMBLE_CHECKED_STORE_INTEGER(asm_instr) \ |
| 380 | do { \ |
| 381 | auto offset = i.InputRegister(0); \ |
| 382 | if (instr->InputAt(1)->IsRegister()) { \ |
| 383 | __ cmp(offset, i.InputRegister(1)); \ |
| 384 | } else { \ |
| 385 | __ cmp(offset, i.InputImmediate(1)); \ |
| 386 | } \ |
| 387 | auto value = i.InputRegister(2); \ |
| 388 | __ asm_instr(value, i.InputOffset(3), lo); \ |
| 389 | DCHECK_EQ(LeaveCC, i.OutputSBit()); \ |
| 390 | } while (0) |
| 391 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 392 | #define ASSEMBLE_ATOMIC_LOAD_INTEGER(asm_instr) \ |
| 393 | do { \ |
| 394 | __ asm_instr(i.OutputRegister(), \ |
| 395 | MemOperand(i.InputRegister(0), i.InputRegister(1))); \ |
| 396 | __ dmb(ISH); \ |
| 397 | } while (0) |
| 398 | |
| 399 | #define ASSEMBLE_ATOMIC_STORE_INTEGER(asm_instr) \ |
| 400 | do { \ |
| 401 | __ dmb(ISH); \ |
| 402 | __ asm_instr(i.InputRegister(2), \ |
| 403 | MemOperand(i.InputRegister(0), i.InputRegister(1))); \ |
| 404 | __ dmb(ISH); \ |
| 405 | } while (0) |
| 406 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 407 | void CodeGenerator::AssembleDeconstructFrame() { |
| 408 | __ LeaveFrame(StackFrame::MANUAL); |
| 409 | } |
| 410 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 411 | void CodeGenerator::AssembleDeconstructActivationRecord(int stack_param_delta) { |
| 412 | int sp_slot_delta = TailCallFrameStackSlotDelta(stack_param_delta); |
| 413 | if (sp_slot_delta > 0) { |
| 414 | __ add(sp, sp, Operand(sp_slot_delta * kPointerSize)); |
| 415 | } |
| 416 | frame_access_state()->SetFrameAccessToDefault(); |
| 417 | } |
| 418 | |
| 419 | |
| 420 | void CodeGenerator::AssemblePrepareTailCall(int stack_param_delta) { |
| 421 | int sp_slot_delta = TailCallFrameStackSlotDelta(stack_param_delta); |
| 422 | if (sp_slot_delta < 0) { |
| 423 | __ sub(sp, sp, Operand(-sp_slot_delta * kPointerSize)); |
| 424 | frame_access_state()->IncreaseSPDelta(-sp_slot_delta); |
| 425 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 426 | if (frame_access_state()->has_frame()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 427 | if (FLAG_enable_embedded_constant_pool) { |
| 428 | __ ldr(cp, MemOperand(fp, StandardFrameConstants::kConstantPoolOffset)); |
| 429 | } |
| 430 | __ ldr(lr, MemOperand(fp, StandardFrameConstants::kCallerPCOffset)); |
| 431 | __ ldr(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 432 | } |
| 433 | frame_access_state()->SetFrameAccessToSP(); |
| 434 | } |
| 435 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 436 | void CodeGenerator::AssemblePopArgumentsAdaptorFrame(Register args_reg, |
| 437 | Register scratch1, |
| 438 | Register scratch2, |
| 439 | Register scratch3) { |
| 440 | DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3)); |
| 441 | Label done; |
| 442 | |
| 443 | // Check if current frame is an arguments adaptor frame. |
| 444 | __ ldr(scratch1, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 445 | __ cmp(scratch1, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 446 | __ b(ne, &done); |
| 447 | |
| 448 | // Load arguments count from current arguments adaptor frame (note, it |
| 449 | // does not include receiver). |
| 450 | Register caller_args_count_reg = scratch1; |
| 451 | __ ldr(caller_args_count_reg, |
| 452 | MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 453 | __ SmiUntag(caller_args_count_reg); |
| 454 | |
| 455 | ParameterCount callee_args_count(args_reg); |
| 456 | __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2, |
| 457 | scratch3); |
| 458 | __ bind(&done); |
| 459 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 460 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 461 | // Assembles an instruction after register allocation, producing machine code. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 462 | CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction( |
| 463 | Instruction* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 464 | ArmOperandConverter i(this, instr); |
| 465 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 466 | __ MaybeCheckConstPool(); |
| 467 | InstructionCode opcode = instr->opcode(); |
| 468 | ArchOpcode arch_opcode = ArchOpcodeField::decode(opcode); |
| 469 | switch (arch_opcode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 470 | case kArchCallCodeObject: { |
| 471 | EnsureSpaceForLazyDeopt(); |
| 472 | if (instr->InputAt(0)->IsImmediate()) { |
| 473 | __ Call(Handle<Code>::cast(i.InputHeapObject(0)), |
| 474 | RelocInfo::CODE_TARGET); |
| 475 | } else { |
| 476 | __ add(ip, i.InputRegister(0), |
| 477 | Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 478 | __ Call(ip); |
| 479 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 480 | RecordCallPosition(instr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 481 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 482 | frame_access_state()->ClearSPDelta(); |
| 483 | break; |
| 484 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 485 | case kArchTailCallCodeObjectFromJSFunction: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 486 | case kArchTailCallCodeObject: { |
| 487 | int stack_param_delta = i.InputInt32(instr->InputCount() - 1); |
| 488 | AssembleDeconstructActivationRecord(stack_param_delta); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 489 | if (arch_opcode == kArchTailCallCodeObjectFromJSFunction) { |
| 490 | AssemblePopArgumentsAdaptorFrame(kJavaScriptCallArgCountRegister, |
| 491 | i.TempRegister(0), i.TempRegister(1), |
| 492 | i.TempRegister(2)); |
| 493 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 494 | if (instr->InputAt(0)->IsImmediate()) { |
| 495 | __ Jump(Handle<Code>::cast(i.InputHeapObject(0)), |
| 496 | RelocInfo::CODE_TARGET); |
| 497 | } else { |
| 498 | __ add(ip, i.InputRegister(0), |
| 499 | Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 500 | __ Jump(ip); |
| 501 | } |
| 502 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 503 | frame_access_state()->ClearSPDelta(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 504 | break; |
| 505 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 506 | case kArchTailCallAddress: { |
| 507 | int stack_param_delta = i.InputInt32(instr->InputCount() - 1); |
| 508 | AssembleDeconstructActivationRecord(stack_param_delta); |
| 509 | CHECK(!instr->InputAt(0)->IsImmediate()); |
| 510 | __ Jump(i.InputRegister(0)); |
| 511 | frame_access_state()->ClearSPDelta(); |
| 512 | break; |
| 513 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 514 | case kArchCallJSFunction: { |
| 515 | EnsureSpaceForLazyDeopt(); |
| 516 | Register func = i.InputRegister(0); |
| 517 | if (FLAG_debug_code) { |
| 518 | // Check the function's context matches the context argument. |
| 519 | __ ldr(kScratchReg, FieldMemOperand(func, JSFunction::kContextOffset)); |
| 520 | __ cmp(cp, kScratchReg); |
| 521 | __ Assert(eq, kWrongFunctionContext); |
| 522 | } |
| 523 | __ ldr(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset)); |
| 524 | __ Call(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 525 | RecordCallPosition(instr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 526 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 527 | frame_access_state()->ClearSPDelta(); |
| 528 | break; |
| 529 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 530 | case kArchTailCallJSFunctionFromJSFunction: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 531 | case kArchTailCallJSFunction: { |
| 532 | Register func = i.InputRegister(0); |
| 533 | if (FLAG_debug_code) { |
| 534 | // Check the function's context matches the context argument. |
| 535 | __ ldr(kScratchReg, FieldMemOperand(func, JSFunction::kContextOffset)); |
| 536 | __ cmp(cp, kScratchReg); |
| 537 | __ Assert(eq, kWrongFunctionContext); |
| 538 | } |
| 539 | int stack_param_delta = i.InputInt32(instr->InputCount() - 1); |
| 540 | AssembleDeconstructActivationRecord(stack_param_delta); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 541 | if (arch_opcode == kArchTailCallJSFunctionFromJSFunction) { |
| 542 | AssemblePopArgumentsAdaptorFrame(kJavaScriptCallArgCountRegister, |
| 543 | i.TempRegister(0), i.TempRegister(1), |
| 544 | i.TempRegister(2)); |
| 545 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 546 | __ ldr(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset)); |
| 547 | __ Jump(ip); |
| 548 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 549 | frame_access_state()->ClearSPDelta(); |
| 550 | break; |
| 551 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 552 | case kArchPrepareCallCFunction: { |
| 553 | int const num_parameters = MiscField::decode(instr->opcode()); |
| 554 | __ PrepareCallCFunction(num_parameters, kScratchReg); |
| 555 | // Frame alignment requires using FP-relative frame addressing. |
| 556 | frame_access_state()->SetFrameAccessToFP(); |
| 557 | break; |
| 558 | } |
| 559 | case kArchPrepareTailCall: |
| 560 | AssemblePrepareTailCall(i.InputInt32(instr->InputCount() - 1)); |
| 561 | break; |
| 562 | case kArchCallCFunction: { |
| 563 | int const num_parameters = MiscField::decode(instr->opcode()); |
| 564 | if (instr->InputAt(0)->IsImmediate()) { |
| 565 | ExternalReference ref = i.InputExternalReference(0); |
| 566 | __ CallCFunction(ref, num_parameters); |
| 567 | } else { |
| 568 | Register func = i.InputRegister(0); |
| 569 | __ CallCFunction(func, num_parameters); |
| 570 | } |
| 571 | frame_access_state()->SetFrameAccessToDefault(); |
| 572 | frame_access_state()->ClearSPDelta(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 573 | break; |
| 574 | } |
| 575 | case kArchJmp: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 576 | AssembleArchJump(i.InputRpo(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 577 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 578 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 579 | case kArchLookupSwitch: |
| 580 | AssembleArchLookupSwitch(instr); |
| 581 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 582 | break; |
| 583 | case kArchTableSwitch: |
| 584 | AssembleArchTableSwitch(instr); |
| 585 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 586 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 587 | case kArchNop: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 588 | case kArchThrowTerminator: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 589 | // don't emit code for nops. |
| 590 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 591 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 592 | case kArchDeoptimize: { |
| 593 | int deopt_state_id = |
| 594 | BuildTranslation(instr, -1, 0, OutputFrameStateCombine::Ignore()); |
| 595 | Deoptimizer::BailoutType bailout_type = |
| 596 | Deoptimizer::BailoutType(MiscField::decode(instr->opcode())); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 597 | CodeGenResult result = |
| 598 | AssembleDeoptimizerCall(deopt_state_id, bailout_type); |
| 599 | if (result != kSuccess) return result; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 600 | break; |
| 601 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 602 | case kArchRet: |
| 603 | AssembleReturn(); |
| 604 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 605 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 606 | case kArchStackPointer: |
| 607 | __ mov(i.OutputRegister(), sp); |
| 608 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 609 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 610 | case kArchFramePointer: |
| 611 | __ mov(i.OutputRegister(), fp); |
| 612 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 613 | break; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 614 | case kArchParentFramePointer: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 615 | if (frame_access_state()->has_frame()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 616 | __ ldr(i.OutputRegister(), MemOperand(fp, 0)); |
| 617 | } else { |
| 618 | __ mov(i.OutputRegister(), fp); |
| 619 | } |
| 620 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 621 | case kArchTruncateDoubleToI: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 622 | __ TruncateDoubleToI(i.OutputRegister(), i.InputFloat64Register(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 623 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 624 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 625 | case kArchStoreWithWriteBarrier: { |
| 626 | RecordWriteMode mode = |
| 627 | static_cast<RecordWriteMode>(MiscField::decode(instr->opcode())); |
| 628 | Register object = i.InputRegister(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 629 | Register value = i.InputRegister(2); |
| 630 | Register scratch0 = i.TempRegister(0); |
| 631 | Register scratch1 = i.TempRegister(1); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 632 | OutOfLineRecordWrite* ool; |
| 633 | |
| 634 | AddressingMode addressing_mode = |
| 635 | AddressingModeField::decode(instr->opcode()); |
| 636 | if (addressing_mode == kMode_Offset_RI) { |
| 637 | int32_t index = i.InputInt32(1); |
| 638 | ool = new (zone()) OutOfLineRecordWrite(this, object, index, value, |
| 639 | scratch0, scratch1, mode); |
| 640 | __ str(value, MemOperand(object, index)); |
| 641 | } else { |
| 642 | DCHECK_EQ(kMode_Offset_RR, addressing_mode); |
| 643 | Register index(i.InputRegister(1)); |
| 644 | ool = new (zone()) OutOfLineRecordWrite(this, object, index, value, |
| 645 | scratch0, scratch1, mode); |
| 646 | __ str(value, MemOperand(object, index)); |
| 647 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 648 | __ CheckPageFlag(object, scratch0, |
| 649 | MemoryChunk::kPointersFromHereAreInterestingMask, ne, |
| 650 | ool->entry()); |
| 651 | __ bind(ool->exit()); |
| 652 | break; |
| 653 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 654 | case kArchStackSlot: { |
| 655 | FrameOffset offset = |
| 656 | frame_access_state()->GetFrameOffset(i.InputInt32(0)); |
| 657 | Register base; |
| 658 | if (offset.from_stack_pointer()) { |
| 659 | base = sp; |
| 660 | } else { |
| 661 | base = fp; |
| 662 | } |
| 663 | __ add(i.OutputRegister(0), base, Operand(offset.offset())); |
| 664 | break; |
| 665 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 666 | case kArmAdd: |
| 667 | __ add(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 668 | i.OutputSBit()); |
| 669 | break; |
| 670 | case kArmAnd: |
| 671 | __ and_(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 672 | i.OutputSBit()); |
| 673 | break; |
| 674 | case kArmBic: |
| 675 | __ bic(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 676 | i.OutputSBit()); |
| 677 | break; |
| 678 | case kArmMul: |
| 679 | __ mul(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 680 | i.OutputSBit()); |
| 681 | break; |
| 682 | case kArmMla: |
| 683 | __ mla(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 684 | i.InputRegister(2), i.OutputSBit()); |
| 685 | break; |
| 686 | case kArmMls: { |
| 687 | CpuFeatureScope scope(masm(), MLS); |
| 688 | __ mls(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 689 | i.InputRegister(2)); |
| 690 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 691 | break; |
| 692 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 693 | case kArmSmmul: |
| 694 | __ smmul(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1)); |
| 695 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 696 | break; |
| 697 | case kArmSmmla: |
| 698 | __ smmla(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 699 | i.InputRegister(2)); |
| 700 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 701 | break; |
| 702 | case kArmUmull: |
| 703 | __ umull(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 704 | i.InputRegister(1), i.OutputSBit()); |
| 705 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 706 | case kArmSdiv: { |
| 707 | CpuFeatureScope scope(masm(), SUDIV); |
| 708 | __ sdiv(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1)); |
| 709 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 710 | break; |
| 711 | } |
| 712 | case kArmUdiv: { |
| 713 | CpuFeatureScope scope(masm(), SUDIV); |
| 714 | __ udiv(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1)); |
| 715 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 716 | break; |
| 717 | } |
| 718 | case kArmMov: |
| 719 | __ Move(i.OutputRegister(), i.InputOperand2(0), i.OutputSBit()); |
| 720 | break; |
| 721 | case kArmMvn: |
| 722 | __ mvn(i.OutputRegister(), i.InputOperand2(0), i.OutputSBit()); |
| 723 | break; |
| 724 | case kArmOrr: |
| 725 | __ orr(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 726 | i.OutputSBit()); |
| 727 | break; |
| 728 | case kArmEor: |
| 729 | __ eor(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 730 | i.OutputSBit()); |
| 731 | break; |
| 732 | case kArmSub: |
| 733 | __ sub(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 734 | i.OutputSBit()); |
| 735 | break; |
| 736 | case kArmRsb: |
| 737 | __ rsb(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 738 | i.OutputSBit()); |
| 739 | break; |
| 740 | case kArmBfc: { |
| 741 | CpuFeatureScope scope(masm(), ARMv7); |
| 742 | __ bfc(i.OutputRegister(), i.InputInt8(1), i.InputInt8(2)); |
| 743 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 744 | break; |
| 745 | } |
| 746 | case kArmUbfx: { |
| 747 | CpuFeatureScope scope(masm(), ARMv7); |
| 748 | __ ubfx(i.OutputRegister(), i.InputRegister(0), i.InputInt8(1), |
| 749 | i.InputInt8(2)); |
| 750 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 751 | break; |
| 752 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 753 | case kArmSbfx: { |
| 754 | CpuFeatureScope scope(masm(), ARMv7); |
| 755 | __ sbfx(i.OutputRegister(), i.InputRegister(0), i.InputInt8(1), |
| 756 | i.InputInt8(2)); |
| 757 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 758 | break; |
| 759 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 760 | case kArmSxtb: |
| 761 | __ sxtb(i.OutputRegister(), i.InputRegister(0), i.InputInt32(1)); |
| 762 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 763 | break; |
| 764 | case kArmSxth: |
| 765 | __ sxth(i.OutputRegister(), i.InputRegister(0), i.InputInt32(1)); |
| 766 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 767 | break; |
| 768 | case kArmSxtab: |
| 769 | __ sxtab(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 770 | i.InputInt32(2)); |
| 771 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 772 | break; |
| 773 | case kArmSxtah: |
| 774 | __ sxtah(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 775 | i.InputInt32(2)); |
| 776 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 777 | break; |
| 778 | case kArmUxtb: |
| 779 | __ uxtb(i.OutputRegister(), i.InputRegister(0), i.InputInt32(1)); |
| 780 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 781 | break; |
| 782 | case kArmUxth: |
| 783 | __ uxth(i.OutputRegister(), i.InputRegister(0), i.InputInt32(1)); |
| 784 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 785 | break; |
| 786 | case kArmUxtab: |
| 787 | __ uxtab(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 788 | i.InputInt32(2)); |
| 789 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 790 | break; |
| 791 | case kArmUxtah: |
| 792 | __ uxtah(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 793 | i.InputInt32(2)); |
| 794 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 795 | break; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 796 | case kArmRbit: { |
| 797 | CpuFeatureScope scope(masm(), ARMv7); |
| 798 | __ rbit(i.OutputRegister(), i.InputRegister(0)); |
| 799 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 800 | break; |
| 801 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 802 | case kArmClz: |
| 803 | __ clz(i.OutputRegister(), i.InputRegister(0)); |
| 804 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 805 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 806 | case kArmCmp: |
| 807 | __ cmp(i.InputRegister(0), i.InputOperand2(1)); |
| 808 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 809 | break; |
| 810 | case kArmCmn: |
| 811 | __ cmn(i.InputRegister(0), i.InputOperand2(1)); |
| 812 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 813 | break; |
| 814 | case kArmTst: |
| 815 | __ tst(i.InputRegister(0), i.InputOperand2(1)); |
| 816 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 817 | break; |
| 818 | case kArmTeq: |
| 819 | __ teq(i.InputRegister(0), i.InputOperand2(1)); |
| 820 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 821 | break; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 822 | case kArmAddPair: |
| 823 | // i.InputRegister(0) ... left low word. |
| 824 | // i.InputRegister(1) ... left high word. |
| 825 | // i.InputRegister(2) ... right low word. |
| 826 | // i.InputRegister(3) ... right high word. |
| 827 | __ add(i.OutputRegister(0), i.InputRegister(0), i.InputRegister(2), |
| 828 | SBit::SetCC); |
| 829 | __ adc(i.OutputRegister(1), i.InputRegister(1), |
| 830 | Operand(i.InputRegister(3))); |
| 831 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 832 | break; |
| 833 | case kArmSubPair: |
| 834 | // i.InputRegister(0) ... left low word. |
| 835 | // i.InputRegister(1) ... left high word. |
| 836 | // i.InputRegister(2) ... right low word. |
| 837 | // i.InputRegister(3) ... right high word. |
| 838 | __ sub(i.OutputRegister(0), i.InputRegister(0), i.InputRegister(2), |
| 839 | SBit::SetCC); |
| 840 | __ sbc(i.OutputRegister(1), i.InputRegister(1), |
| 841 | Operand(i.InputRegister(3))); |
| 842 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 843 | break; |
| 844 | case kArmMulPair: |
| 845 | // i.InputRegister(0) ... left low word. |
| 846 | // i.InputRegister(1) ... left high word. |
| 847 | // i.InputRegister(2) ... right low word. |
| 848 | // i.InputRegister(3) ... right high word. |
| 849 | __ umull(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 850 | i.InputRegister(2)); |
| 851 | __ mla(i.OutputRegister(1), i.InputRegister(0), i.InputRegister(3), |
| 852 | i.OutputRegister(1)); |
| 853 | __ mla(i.OutputRegister(1), i.InputRegister(2), i.InputRegister(1), |
| 854 | i.OutputRegister(1)); |
| 855 | break; |
| 856 | case kArmLslPair: |
| 857 | if (instr->InputAt(2)->IsImmediate()) { |
| 858 | __ LslPair(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 859 | i.InputRegister(1), i.InputInt32(2)); |
| 860 | } else { |
| 861 | __ LslPair(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 862 | i.InputRegister(1), kScratchReg, i.InputRegister(2)); |
| 863 | } |
| 864 | break; |
| 865 | case kArmLsrPair: |
| 866 | if (instr->InputAt(2)->IsImmediate()) { |
| 867 | __ LsrPair(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 868 | i.InputRegister(1), i.InputInt32(2)); |
| 869 | } else { |
| 870 | __ LsrPair(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 871 | i.InputRegister(1), kScratchReg, i.InputRegister(2)); |
| 872 | } |
| 873 | break; |
| 874 | case kArmAsrPair: |
| 875 | if (instr->InputAt(2)->IsImmediate()) { |
| 876 | __ AsrPair(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 877 | i.InputRegister(1), i.InputInt32(2)); |
| 878 | } else { |
| 879 | __ AsrPair(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 880 | i.InputRegister(1), kScratchReg, i.InputRegister(2)); |
| 881 | } |
| 882 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 883 | case kArmVcmpF32: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 884 | if (instr->InputAt(1)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 885 | __ VFPCompareAndSetFlags(i.InputFloat32Register(0), |
| 886 | i.InputFloat32Register(1)); |
| 887 | } else { |
| 888 | DCHECK(instr->InputAt(1)->IsImmediate()); |
| 889 | // 0.0 is the only immediate supported by vcmp instructions. |
| 890 | DCHECK(i.InputFloat32(1) == 0.0f); |
| 891 | __ VFPCompareAndSetFlags(i.InputFloat32Register(0), i.InputFloat32(1)); |
| 892 | } |
| 893 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 894 | break; |
| 895 | case kArmVaddF32: |
| 896 | __ vadd(i.OutputFloat32Register(), i.InputFloat32Register(0), |
| 897 | i.InputFloat32Register(1)); |
| 898 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 899 | break; |
| 900 | case kArmVsubF32: |
| 901 | __ vsub(i.OutputFloat32Register(), i.InputFloat32Register(0), |
| 902 | i.InputFloat32Register(1)); |
| 903 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 904 | break; |
| 905 | case kArmVmulF32: |
| 906 | __ vmul(i.OutputFloat32Register(), i.InputFloat32Register(0), |
| 907 | i.InputFloat32Register(1)); |
| 908 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 909 | break; |
| 910 | case kArmVmlaF32: |
| 911 | __ vmla(i.OutputFloat32Register(), i.InputFloat32Register(1), |
| 912 | i.InputFloat32Register(2)); |
| 913 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 914 | break; |
| 915 | case kArmVmlsF32: |
| 916 | __ vmls(i.OutputFloat32Register(), i.InputFloat32Register(1), |
| 917 | i.InputFloat32Register(2)); |
| 918 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 919 | break; |
| 920 | case kArmVdivF32: |
| 921 | __ vdiv(i.OutputFloat32Register(), i.InputFloat32Register(0), |
| 922 | i.InputFloat32Register(1)); |
| 923 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 924 | break; |
| 925 | case kArmVsqrtF32: |
| 926 | __ vsqrt(i.OutputFloat32Register(), i.InputFloat32Register(0)); |
| 927 | break; |
| 928 | case kArmVabsF32: |
| 929 | __ vabs(i.OutputFloat32Register(), i.InputFloat32Register(0)); |
| 930 | break; |
| 931 | case kArmVnegF32: |
| 932 | __ vneg(i.OutputFloat32Register(), i.InputFloat32Register(0)); |
| 933 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 934 | case kArmVcmpF64: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 935 | if (instr->InputAt(1)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 936 | __ VFPCompareAndSetFlags(i.InputFloat64Register(0), |
| 937 | i.InputFloat64Register(1)); |
| 938 | } else { |
| 939 | DCHECK(instr->InputAt(1)->IsImmediate()); |
| 940 | // 0.0 is the only immediate supported by vcmp instructions. |
| 941 | DCHECK(i.InputDouble(1) == 0.0); |
| 942 | __ VFPCompareAndSetFlags(i.InputFloat64Register(0), i.InputDouble(1)); |
| 943 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 944 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 945 | break; |
| 946 | case kArmVaddF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 947 | __ vadd(i.OutputFloat64Register(), i.InputFloat64Register(0), |
| 948 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 949 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 950 | break; |
| 951 | case kArmVsubF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 952 | __ vsub(i.OutputFloat64Register(), i.InputFloat64Register(0), |
| 953 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 954 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 955 | break; |
| 956 | case kArmVmulF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 957 | __ vmul(i.OutputFloat64Register(), i.InputFloat64Register(0), |
| 958 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 959 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 960 | break; |
| 961 | case kArmVmlaF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 962 | __ vmla(i.OutputFloat64Register(), i.InputFloat64Register(1), |
| 963 | i.InputFloat64Register(2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 964 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 965 | break; |
| 966 | case kArmVmlsF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 967 | __ vmls(i.OutputFloat64Register(), i.InputFloat64Register(1), |
| 968 | i.InputFloat64Register(2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 969 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 970 | break; |
| 971 | case kArmVdivF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 972 | __ vdiv(i.OutputFloat64Register(), i.InputFloat64Register(0), |
| 973 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 974 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 975 | break; |
| 976 | case kArmVmodF64: { |
| 977 | // TODO(bmeurer): We should really get rid of this special instruction, |
| 978 | // and generate a CallAddress instruction instead. |
| 979 | FrameScope scope(masm(), StackFrame::MANUAL); |
| 980 | __ PrepareCallCFunction(0, 2, kScratchReg); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 981 | __ MovToFloatParameters(i.InputFloat64Register(0), |
| 982 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 983 | __ CallCFunction(ExternalReference::mod_two_doubles_operation(isolate()), |
| 984 | 0, 2); |
| 985 | // Move the result in the double result register. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 986 | __ MovFromFloatResult(i.OutputFloat64Register()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 987 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 988 | break; |
| 989 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 990 | case kArmVsqrtF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 991 | __ vsqrt(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 992 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 993 | case kArmVabsF64: |
| 994 | __ vabs(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 995 | break; |
| 996 | case kArmVnegF64: |
| 997 | __ vneg(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 998 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 999 | case kArmVrintmF32: |
| 1000 | __ vrintm(i.OutputFloat32Register(), i.InputFloat32Register(0)); |
| 1001 | break; |
| 1002 | case kArmVrintmF64: |
| 1003 | __ vrintm(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 1004 | break; |
| 1005 | case kArmVrintpF32: |
| 1006 | __ vrintp(i.OutputFloat32Register(), i.InputFloat32Register(0)); |
| 1007 | break; |
| 1008 | case kArmVrintpF64: |
| 1009 | __ vrintp(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 1010 | break; |
| 1011 | case kArmVrintzF32: |
| 1012 | __ vrintz(i.OutputFloat32Register(), i.InputFloat32Register(0)); |
| 1013 | break; |
| 1014 | case kArmVrintzF64: |
| 1015 | __ vrintz(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 1016 | break; |
| 1017 | case kArmVrintaF64: |
| 1018 | __ vrinta(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 1019 | break; |
| 1020 | case kArmVrintnF32: |
| 1021 | __ vrintn(i.OutputFloat32Register(), i.InputFloat32Register(0)); |
| 1022 | break; |
| 1023 | case kArmVrintnF64: |
| 1024 | __ vrintn(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 1025 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1026 | case kArmVcvtF32F64: { |
| 1027 | __ vcvt_f32_f64(i.OutputFloat32Register(), i.InputFloat64Register(0)); |
| 1028 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1029 | break; |
| 1030 | } |
| 1031 | case kArmVcvtF64F32: { |
| 1032 | __ vcvt_f64_f32(i.OutputFloat64Register(), i.InputFloat32Register(0)); |
| 1033 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1034 | break; |
| 1035 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1036 | case kArmVcvtF32S32: { |
| 1037 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
| 1038 | __ vmov(scratch, i.InputRegister(0)); |
| 1039 | __ vcvt_f32_s32(i.OutputFloat32Register(), scratch); |
| 1040 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1041 | break; |
| 1042 | } |
| 1043 | case kArmVcvtF32U32: { |
| 1044 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
| 1045 | __ vmov(scratch, i.InputRegister(0)); |
| 1046 | __ vcvt_f32_u32(i.OutputFloat32Register(), scratch); |
| 1047 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1048 | break; |
| 1049 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1050 | case kArmVcvtF64S32: { |
| 1051 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
| 1052 | __ vmov(scratch, i.InputRegister(0)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1053 | __ vcvt_f64_s32(i.OutputFloat64Register(), scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1054 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1055 | break; |
| 1056 | } |
| 1057 | case kArmVcvtF64U32: { |
| 1058 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
| 1059 | __ vmov(scratch, i.InputRegister(0)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1060 | __ vcvt_f64_u32(i.OutputFloat64Register(), scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1061 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1062 | break; |
| 1063 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1064 | case kArmVcvtS32F32: { |
| 1065 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
| 1066 | __ vcvt_s32_f32(scratch, i.InputFloat32Register(0)); |
| 1067 | __ vmov(i.OutputRegister(), scratch); |
| 1068 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1069 | break; |
| 1070 | } |
| 1071 | case kArmVcvtU32F32: { |
| 1072 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
| 1073 | __ vcvt_u32_f32(scratch, i.InputFloat32Register(0)); |
| 1074 | __ vmov(i.OutputRegister(), scratch); |
| 1075 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1076 | break; |
| 1077 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1078 | case kArmVcvtS32F64: { |
| 1079 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1080 | __ vcvt_s32_f64(scratch, i.InputFloat64Register(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1081 | __ vmov(i.OutputRegister(), scratch); |
| 1082 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1083 | break; |
| 1084 | } |
| 1085 | case kArmVcvtU32F64: { |
| 1086 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1087 | __ vcvt_u32_f64(scratch, i.InputFloat64Register(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1088 | __ vmov(i.OutputRegister(), scratch); |
| 1089 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1090 | break; |
| 1091 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1092 | case kArmVmovLowU32F64: |
| 1093 | __ VmovLow(i.OutputRegister(), i.InputFloat64Register(0)); |
| 1094 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1095 | break; |
| 1096 | case kArmVmovLowF64U32: |
| 1097 | __ VmovLow(i.OutputFloat64Register(), i.InputRegister(1)); |
| 1098 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1099 | break; |
| 1100 | case kArmVmovHighU32F64: |
| 1101 | __ VmovHigh(i.OutputRegister(), i.InputFloat64Register(0)); |
| 1102 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1103 | break; |
| 1104 | case kArmVmovHighF64U32: |
| 1105 | __ VmovHigh(i.OutputFloat64Register(), i.InputRegister(1)); |
| 1106 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1107 | break; |
| 1108 | case kArmVmovF64U32U32: |
| 1109 | __ vmov(i.OutputFloat64Register(), i.InputRegister(0), |
| 1110 | i.InputRegister(1)); |
| 1111 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1112 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1113 | case kArmLdrb: |
| 1114 | __ ldrb(i.OutputRegister(), i.InputOffset()); |
| 1115 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1116 | break; |
| 1117 | case kArmLdrsb: |
| 1118 | __ ldrsb(i.OutputRegister(), i.InputOffset()); |
| 1119 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1120 | break; |
| 1121 | case kArmStrb: { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1122 | size_t index = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1123 | MemOperand operand = i.InputOffset(&index); |
| 1124 | __ strb(i.InputRegister(index), operand); |
| 1125 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1126 | break; |
| 1127 | } |
| 1128 | case kArmLdrh: |
| 1129 | __ ldrh(i.OutputRegister(), i.InputOffset()); |
| 1130 | break; |
| 1131 | case kArmLdrsh: |
| 1132 | __ ldrsh(i.OutputRegister(), i.InputOffset()); |
| 1133 | break; |
| 1134 | case kArmStrh: { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1135 | size_t index = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1136 | MemOperand operand = i.InputOffset(&index); |
| 1137 | __ strh(i.InputRegister(index), operand); |
| 1138 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1139 | break; |
| 1140 | } |
| 1141 | case kArmLdr: |
| 1142 | __ ldr(i.OutputRegister(), i.InputOffset()); |
| 1143 | break; |
| 1144 | case kArmStr: { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1145 | size_t index = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1146 | MemOperand operand = i.InputOffset(&index); |
| 1147 | __ str(i.InputRegister(index), operand); |
| 1148 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1149 | break; |
| 1150 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1151 | case kArmVldrF32: { |
| 1152 | __ vldr(i.OutputFloat32Register(), i.InputOffset()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1153 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1154 | break; |
| 1155 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1156 | case kArmVstrF32: { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1157 | size_t index = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1158 | MemOperand operand = i.InputOffset(&index); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1159 | __ vstr(i.InputFloat32Register(index), operand); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1160 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1161 | break; |
| 1162 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1163 | case kArmVldrF64: |
| 1164 | __ vldr(i.OutputFloat64Register(), i.InputOffset()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1165 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1166 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1167 | case kArmVstrF64: { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1168 | size_t index = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1169 | MemOperand operand = i.InputOffset(&index); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1170 | __ vstr(i.InputFloat64Register(index), operand); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1171 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1172 | break; |
| 1173 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1174 | case kArmFloat32Max: { |
| 1175 | CpuFeatureScope scope(masm(), ARMv8); |
| 1176 | // (b < a) ? a : b |
| 1177 | SwVfpRegister a = i.InputFloat32Register(0); |
| 1178 | SwVfpRegister b = i.InputFloat32Register(1); |
| 1179 | SwVfpRegister result = i.OutputFloat32Register(0); |
| 1180 | __ VFPCompareAndSetFlags(a, b); |
| 1181 | __ vsel(gt, result, a, b); |
| 1182 | break; |
| 1183 | } |
| 1184 | case kArmFloat32Min: { |
| 1185 | CpuFeatureScope scope(masm(), ARMv8); |
| 1186 | // (a < b) ? a : b |
| 1187 | SwVfpRegister a = i.InputFloat32Register(0); |
| 1188 | SwVfpRegister b = i.InputFloat32Register(1); |
| 1189 | SwVfpRegister result = i.OutputFloat32Register(0); |
| 1190 | __ VFPCompareAndSetFlags(b, a); |
| 1191 | __ vsel(gt, result, a, b); |
| 1192 | break; |
| 1193 | } |
| 1194 | case kArmFloat64Max: { |
| 1195 | CpuFeatureScope scope(masm(), ARMv8); |
| 1196 | // (b < a) ? a : b |
| 1197 | DwVfpRegister a = i.InputFloat64Register(0); |
| 1198 | DwVfpRegister b = i.InputFloat64Register(1); |
| 1199 | DwVfpRegister result = i.OutputFloat64Register(0); |
| 1200 | __ VFPCompareAndSetFlags(a, b); |
| 1201 | __ vsel(gt, result, a, b); |
| 1202 | break; |
| 1203 | } |
| 1204 | case kArmFloat64Min: { |
| 1205 | CpuFeatureScope scope(masm(), ARMv8); |
| 1206 | // (a < b) ? a : b |
| 1207 | DwVfpRegister a = i.InputFloat64Register(0); |
| 1208 | DwVfpRegister b = i.InputFloat64Register(1); |
| 1209 | DwVfpRegister result = i.OutputFloat64Register(0); |
| 1210 | __ VFPCompareAndSetFlags(b, a); |
| 1211 | __ vsel(gt, result, a, b); |
| 1212 | break; |
| 1213 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1214 | case kArmPush: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1215 | if (instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1216 | __ vpush(i.InputDoubleRegister(0)); |
| 1217 | frame_access_state()->IncreaseSPDelta(kDoubleSize / kPointerSize); |
| 1218 | } else { |
| 1219 | __ push(i.InputRegister(0)); |
| 1220 | frame_access_state()->IncreaseSPDelta(1); |
| 1221 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1222 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1223 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1224 | case kArmPoke: { |
| 1225 | int const slot = MiscField::decode(instr->opcode()); |
| 1226 | __ str(i.InputRegister(0), MemOperand(sp, slot * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1227 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 1228 | break; |
| 1229 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1230 | case kCheckedLoadInt8: |
| 1231 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldrsb); |
| 1232 | break; |
| 1233 | case kCheckedLoadUint8: |
| 1234 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldrb); |
| 1235 | break; |
| 1236 | case kCheckedLoadInt16: |
| 1237 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldrsh); |
| 1238 | break; |
| 1239 | case kCheckedLoadUint16: |
| 1240 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldrh); |
| 1241 | break; |
| 1242 | case kCheckedLoadWord32: |
| 1243 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldr); |
| 1244 | break; |
| 1245 | case kCheckedLoadFloat32: |
| 1246 | ASSEMBLE_CHECKED_LOAD_FLOAT(32); |
| 1247 | break; |
| 1248 | case kCheckedLoadFloat64: |
| 1249 | ASSEMBLE_CHECKED_LOAD_FLOAT(64); |
| 1250 | break; |
| 1251 | case kCheckedStoreWord8: |
| 1252 | ASSEMBLE_CHECKED_STORE_INTEGER(strb); |
| 1253 | break; |
| 1254 | case kCheckedStoreWord16: |
| 1255 | ASSEMBLE_CHECKED_STORE_INTEGER(strh); |
| 1256 | break; |
| 1257 | case kCheckedStoreWord32: |
| 1258 | ASSEMBLE_CHECKED_STORE_INTEGER(str); |
| 1259 | break; |
| 1260 | case kCheckedStoreFloat32: |
| 1261 | ASSEMBLE_CHECKED_STORE_FLOAT(32); |
| 1262 | break; |
| 1263 | case kCheckedStoreFloat64: |
| 1264 | ASSEMBLE_CHECKED_STORE_FLOAT(64); |
| 1265 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1266 | case kCheckedLoadWord64: |
| 1267 | case kCheckedStoreWord64: |
| 1268 | UNREACHABLE(); // currently unsupported checked int64 load/store. |
| 1269 | break; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1270 | |
| 1271 | case kAtomicLoadInt8: |
| 1272 | ASSEMBLE_ATOMIC_LOAD_INTEGER(ldrsb); |
| 1273 | break; |
| 1274 | case kAtomicLoadUint8: |
| 1275 | ASSEMBLE_ATOMIC_LOAD_INTEGER(ldrb); |
| 1276 | break; |
| 1277 | case kAtomicLoadInt16: |
| 1278 | ASSEMBLE_ATOMIC_LOAD_INTEGER(ldrsh); |
| 1279 | break; |
| 1280 | case kAtomicLoadUint16: |
| 1281 | ASSEMBLE_ATOMIC_LOAD_INTEGER(ldrh); |
| 1282 | break; |
| 1283 | case kAtomicLoadWord32: |
| 1284 | ASSEMBLE_ATOMIC_LOAD_INTEGER(ldr); |
| 1285 | break; |
| 1286 | |
| 1287 | case kAtomicStoreWord8: |
| 1288 | ASSEMBLE_ATOMIC_STORE_INTEGER(strb); |
| 1289 | break; |
| 1290 | case kAtomicStoreWord16: |
| 1291 | ASSEMBLE_ATOMIC_STORE_INTEGER(strh); |
| 1292 | break; |
| 1293 | case kAtomicStoreWord32: |
| 1294 | ASSEMBLE_ATOMIC_STORE_INTEGER(str); |
| 1295 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1296 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1297 | return kSuccess; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1298 | } // NOLINT(readability/fn_size) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1299 | |
| 1300 | |
| 1301 | // Assembles branches after an instruction. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1302 | void CodeGenerator::AssembleArchBranch(Instruction* instr, BranchInfo* branch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1303 | ArmOperandConverter i(this, instr); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1304 | Label* tlabel = branch->true_label; |
| 1305 | Label* flabel = branch->false_label; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1306 | Condition cc = FlagsConditionToCondition(branch->condition); |
| 1307 | __ b(cc, tlabel); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1308 | if (!branch->fallthru) __ b(flabel); // no fallthru to flabel. |
| 1309 | } |
| 1310 | |
| 1311 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1312 | void CodeGenerator::AssembleArchJump(RpoNumber target) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1313 | if (!IsNextInAssemblyOrder(target)) __ b(GetLabel(target)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1314 | } |
| 1315 | |
| 1316 | |
| 1317 | // Assembles boolean materializations after an instruction. |
| 1318 | void CodeGenerator::AssembleArchBoolean(Instruction* instr, |
| 1319 | FlagsCondition condition) { |
| 1320 | ArmOperandConverter i(this, instr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1321 | |
| 1322 | // Materialize a full 32-bit 1 or 0 value. The result register is always the |
| 1323 | // last output of the instruction. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1324 | DCHECK_NE(0u, instr->OutputCount()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1325 | Register reg = i.OutputRegister(instr->OutputCount() - 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1326 | Condition cc = FlagsConditionToCondition(condition); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1327 | __ mov(reg, Operand(0)); |
| 1328 | __ mov(reg, Operand(1), LeaveCC, cc); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1329 | } |
| 1330 | |
| 1331 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1332 | void CodeGenerator::AssembleArchLookupSwitch(Instruction* instr) { |
| 1333 | ArmOperandConverter i(this, instr); |
| 1334 | Register input = i.InputRegister(0); |
| 1335 | for (size_t index = 2; index < instr->InputCount(); index += 2) { |
| 1336 | __ cmp(input, Operand(i.InputInt32(index + 0))); |
| 1337 | __ b(eq, GetLabel(i.InputRpo(index + 1))); |
| 1338 | } |
| 1339 | AssembleArchJump(i.InputRpo(1)); |
| 1340 | } |
| 1341 | |
| 1342 | |
| 1343 | void CodeGenerator::AssembleArchTableSwitch(Instruction* instr) { |
| 1344 | ArmOperandConverter i(this, instr); |
| 1345 | Register input = i.InputRegister(0); |
| 1346 | size_t const case_count = instr->InputCount() - 2; |
| 1347 | // Ensure to emit the constant pool first if necessary. |
| 1348 | __ CheckConstPool(true, true); |
| 1349 | __ cmp(input, Operand(case_count)); |
| 1350 | __ BlockConstPoolFor(case_count + 2); |
| 1351 | __ add(pc, pc, Operand(input, LSL, 2), LeaveCC, lo); |
| 1352 | __ b(GetLabel(i.InputRpo(1))); |
| 1353 | for (size_t index = 0; index < case_count; ++index) { |
| 1354 | __ b(GetLabel(i.InputRpo(index + 2))); |
| 1355 | } |
| 1356 | } |
| 1357 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1358 | CodeGenerator::CodeGenResult CodeGenerator::AssembleDeoptimizerCall( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1359 | int deoptimization_id, Deoptimizer::BailoutType bailout_type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1360 | Address deopt_entry = Deoptimizer::GetDeoptimizationEntry( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1361 | isolate(), deoptimization_id, bailout_type); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1362 | // TODO(turbofan): We should be able to generate better code by sharing the |
| 1363 | // actual final call site and just bl'ing to it here, similar to what we do |
| 1364 | // in the lithium backend. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1365 | if (deopt_entry == nullptr) return kTooManyDeoptimizationBailouts; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1366 | __ Call(deopt_entry, RelocInfo::RUNTIME_ENTRY); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1367 | __ CheckConstPool(false, false); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1368 | return kSuccess; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1369 | } |
| 1370 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1371 | void CodeGenerator::FinishFrame(Frame* frame) { |
| 1372 | CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1373 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1374 | const RegList saves_fp = descriptor->CalleeSavedFPRegisters(); |
| 1375 | if (saves_fp != 0) { |
| 1376 | frame->AlignSavedCalleeRegisterSlots(); |
| 1377 | } |
| 1378 | |
| 1379 | if (saves_fp != 0) { |
| 1380 | // Save callee-saved FP registers. |
| 1381 | STATIC_ASSERT(DwVfpRegister::kMaxNumRegisters == 32); |
| 1382 | uint32_t last = base::bits::CountLeadingZeros32(saves_fp) - 1; |
| 1383 | uint32_t first = base::bits::CountTrailingZeros32(saves_fp); |
| 1384 | DCHECK_EQ((last - first + 1), base::bits::CountPopulation32(saves_fp)); |
| 1385 | frame->AllocateSavedCalleeRegisterSlots((last - first + 1) * |
| 1386 | (kDoubleSize / kPointerSize)); |
| 1387 | } |
| 1388 | const RegList saves = FLAG_enable_embedded_constant_pool |
| 1389 | ? (descriptor->CalleeSavedRegisters() & ~pp.bit()) |
| 1390 | : descriptor->CalleeSavedRegisters(); |
| 1391 | if (saves != 0) { |
| 1392 | // Save callee-saved registers. |
| 1393 | frame->AllocateSavedCalleeRegisterSlots( |
| 1394 | base::bits::CountPopulation32(saves)); |
| 1395 | } |
| 1396 | } |
| 1397 | |
| 1398 | void CodeGenerator::AssembleConstructFrame() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1399 | CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1400 | if (frame_access_state()->has_frame()) { |
| 1401 | if (descriptor->IsCFunctionCall()) { |
| 1402 | if (FLAG_enable_embedded_constant_pool) { |
| 1403 | __ Push(lr, fp, pp); |
| 1404 | // Adjust FP to point to saved FP. |
| 1405 | __ sub(fp, sp, Operand(StandardFrameConstants::kConstantPoolOffset)); |
| 1406 | } else { |
| 1407 | __ Push(lr, fp); |
| 1408 | __ mov(fp, sp); |
| 1409 | } |
| 1410 | } else if (descriptor->IsJSFunctionCall()) { |
| 1411 | __ Prologue(this->info()->GeneratePreagedPrologue()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1412 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1413 | __ StubPrologue(info()->GetOutputStackFrameType()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1414 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1415 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1416 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1417 | int shrink_slots = frame()->GetSpillSlotCount(); |
| 1418 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1419 | if (info()->is_osr()) { |
| 1420 | // TurboFan OSR-compiled functions cannot be entered directly. |
| 1421 | __ Abort(kShouldNotDirectlyEnterOsrFunction); |
| 1422 | |
| 1423 | // Unoptimized code jumps directly to this entrypoint while the unoptimized |
| 1424 | // frame is still on the stack. Optimized code uses OSR values directly from |
| 1425 | // the unoptimized frame. Thus, all that needs to be done is to allocate the |
| 1426 | // remaining stack slots. |
| 1427 | if (FLAG_code_comments) __ RecordComment("-- OSR entrypoint --"); |
| 1428 | osr_pc_offset_ = __ pc_offset(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1429 | shrink_slots -= OsrHelper(info()).UnoptimizedFrameSlots(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1430 | } |
| 1431 | |
| 1432 | const RegList saves_fp = descriptor->CalleeSavedFPRegisters(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1433 | if (shrink_slots > 0) { |
| 1434 | __ sub(sp, sp, Operand(shrink_slots * kPointerSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1435 | } |
| 1436 | |
| 1437 | if (saves_fp != 0) { |
| 1438 | // Save callee-saved FP registers. |
| 1439 | STATIC_ASSERT(DwVfpRegister::kMaxNumRegisters == 32); |
| 1440 | uint32_t last = base::bits::CountLeadingZeros32(saves_fp) - 1; |
| 1441 | uint32_t first = base::bits::CountTrailingZeros32(saves_fp); |
| 1442 | DCHECK_EQ((last - first + 1), base::bits::CountPopulation32(saves_fp)); |
| 1443 | __ vstm(db_w, sp, DwVfpRegister::from_code(first), |
| 1444 | DwVfpRegister::from_code(last)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1445 | } |
| 1446 | const RegList saves = FLAG_enable_embedded_constant_pool |
| 1447 | ? (descriptor->CalleeSavedRegisters() & ~pp.bit()) |
| 1448 | : descriptor->CalleeSavedRegisters(); |
| 1449 | if (saves != 0) { |
| 1450 | // Save callee-saved registers. |
| 1451 | __ stm(db_w, sp, saves); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1452 | } |
| 1453 | } |
| 1454 | |
| 1455 | |
| 1456 | void CodeGenerator::AssembleReturn() { |
| 1457 | CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1458 | int pop_count = static_cast<int>(descriptor->StackParameterCount()); |
| 1459 | |
| 1460 | // Restore registers. |
| 1461 | const RegList saves = FLAG_enable_embedded_constant_pool |
| 1462 | ? (descriptor->CalleeSavedRegisters() & ~pp.bit()) |
| 1463 | : descriptor->CalleeSavedRegisters(); |
| 1464 | if (saves != 0) { |
| 1465 | __ ldm(ia_w, sp, saves); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1466 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1467 | |
| 1468 | // Restore FP registers. |
| 1469 | const RegList saves_fp = descriptor->CalleeSavedFPRegisters(); |
| 1470 | if (saves_fp != 0) { |
| 1471 | STATIC_ASSERT(DwVfpRegister::kMaxNumRegisters == 32); |
| 1472 | uint32_t last = base::bits::CountLeadingZeros32(saves_fp) - 1; |
| 1473 | uint32_t first = base::bits::CountTrailingZeros32(saves_fp); |
| 1474 | __ vldm(ia_w, sp, DwVfpRegister::from_code(first), |
| 1475 | DwVfpRegister::from_code(last)); |
| 1476 | } |
| 1477 | |
| 1478 | if (descriptor->IsCFunctionCall()) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1479 | AssembleDeconstructFrame(); |
| 1480 | } else if (frame_access_state()->has_frame()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1481 | // Canonicalize JSFunction return sites for now. |
| 1482 | if (return_label_.is_bound()) { |
| 1483 | __ b(&return_label_); |
| 1484 | return; |
| 1485 | } else { |
| 1486 | __ bind(&return_label_); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1487 | AssembleDeconstructFrame(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1488 | } |
| 1489 | } |
| 1490 | __ Ret(pop_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1491 | } |
| 1492 | |
| 1493 | |
| 1494 | void CodeGenerator::AssembleMove(InstructionOperand* source, |
| 1495 | InstructionOperand* destination) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1496 | ArmOperandConverter g(this, nullptr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1497 | // Dispatch on the source and destination operand kinds. Not all |
| 1498 | // combinations are possible. |
| 1499 | if (source->IsRegister()) { |
| 1500 | DCHECK(destination->IsRegister() || destination->IsStackSlot()); |
| 1501 | Register src = g.ToRegister(source); |
| 1502 | if (destination->IsRegister()) { |
| 1503 | __ mov(g.ToRegister(destination), src); |
| 1504 | } else { |
| 1505 | __ str(src, g.ToMemOperand(destination)); |
| 1506 | } |
| 1507 | } else if (source->IsStackSlot()) { |
| 1508 | DCHECK(destination->IsRegister() || destination->IsStackSlot()); |
| 1509 | MemOperand src = g.ToMemOperand(source); |
| 1510 | if (destination->IsRegister()) { |
| 1511 | __ ldr(g.ToRegister(destination), src); |
| 1512 | } else { |
| 1513 | Register temp = kScratchReg; |
| 1514 | __ ldr(temp, src); |
| 1515 | __ str(temp, g.ToMemOperand(destination)); |
| 1516 | } |
| 1517 | } else if (source->IsConstant()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1518 | Constant src = g.ToConstant(source); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1519 | if (destination->IsRegister() || destination->IsStackSlot()) { |
| 1520 | Register dst = |
| 1521 | destination->IsRegister() ? g.ToRegister(destination) : kScratchReg; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1522 | switch (src.type()) { |
| 1523 | case Constant::kInt32: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1524 | if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE || |
| 1525 | src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) { |
| 1526 | __ mov(dst, Operand(src.ToInt32(), src.rmode())); |
| 1527 | } else { |
| 1528 | __ mov(dst, Operand(src.ToInt32())); |
| 1529 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1530 | break; |
| 1531 | case Constant::kInt64: |
| 1532 | UNREACHABLE(); |
| 1533 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1534 | case Constant::kFloat32: |
| 1535 | __ Move(dst, |
| 1536 | isolate()->factory()->NewNumber(src.ToFloat32(), TENURED)); |
| 1537 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1538 | case Constant::kFloat64: |
| 1539 | __ Move(dst, |
| 1540 | isolate()->factory()->NewNumber(src.ToFloat64(), TENURED)); |
| 1541 | break; |
| 1542 | case Constant::kExternalReference: |
| 1543 | __ mov(dst, Operand(src.ToExternalReference())); |
| 1544 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1545 | case Constant::kHeapObject: { |
| 1546 | Handle<HeapObject> src_object = src.ToHeapObject(); |
| 1547 | Heap::RootListIndex index; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1548 | int slot; |
| 1549 | if (IsMaterializableFromFrame(src_object, &slot)) { |
| 1550 | __ ldr(dst, g.SlotToMemOperand(slot)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1551 | } else if (IsMaterializableFromRoot(src_object, &index)) { |
| 1552 | __ LoadRoot(dst, index); |
| 1553 | } else { |
| 1554 | __ Move(dst, src_object); |
| 1555 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1556 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1557 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1558 | case Constant::kRpoNumber: |
| 1559 | UNREACHABLE(); // TODO(dcarney): loading RPO constants on arm. |
| 1560 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1561 | } |
| 1562 | if (destination->IsStackSlot()) __ str(dst, g.ToMemOperand(destination)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1563 | } else if (src.type() == Constant::kFloat32) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1564 | if (destination->IsFPStackSlot()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1565 | MemOperand dst = g.ToMemOperand(destination); |
| 1566 | __ mov(ip, Operand(bit_cast<int32_t>(src.ToFloat32()))); |
| 1567 | __ str(ip, dst); |
| 1568 | } else { |
| 1569 | SwVfpRegister dst = g.ToFloat32Register(destination); |
| 1570 | __ vmov(dst, src.ToFloat32()); |
| 1571 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1572 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1573 | DCHECK_EQ(Constant::kFloat64, src.type()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1574 | DwVfpRegister dst = destination->IsFPRegister() |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1575 | ? g.ToFloat64Register(destination) |
| 1576 | : kScratchDoubleReg; |
| 1577 | __ vmov(dst, src.ToFloat64(), kScratchReg); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1578 | if (destination->IsFPStackSlot()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1579 | __ vstr(dst, g.ToMemOperand(destination)); |
| 1580 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1581 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1582 | } else if (source->IsFPRegister()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1583 | DwVfpRegister src = g.ToDoubleRegister(source); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1584 | if (destination->IsFPRegister()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1585 | DwVfpRegister dst = g.ToDoubleRegister(destination); |
| 1586 | __ Move(dst, src); |
| 1587 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1588 | DCHECK(destination->IsFPStackSlot()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1589 | __ vstr(src, g.ToMemOperand(destination)); |
| 1590 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1591 | } else if (source->IsFPStackSlot()) { |
| 1592 | DCHECK(destination->IsFPRegister() || destination->IsFPStackSlot()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1593 | MemOperand src = g.ToMemOperand(source); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1594 | if (destination->IsFPRegister()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1595 | __ vldr(g.ToDoubleRegister(destination), src); |
| 1596 | } else { |
| 1597 | DwVfpRegister temp = kScratchDoubleReg; |
| 1598 | __ vldr(temp, src); |
| 1599 | __ vstr(temp, g.ToMemOperand(destination)); |
| 1600 | } |
| 1601 | } else { |
| 1602 | UNREACHABLE(); |
| 1603 | } |
| 1604 | } |
| 1605 | |
| 1606 | |
| 1607 | void CodeGenerator::AssembleSwap(InstructionOperand* source, |
| 1608 | InstructionOperand* destination) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1609 | ArmOperandConverter g(this, nullptr); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1610 | // Dispatch on the source and destination operand kinds. Not all |
| 1611 | // combinations are possible. |
| 1612 | if (source->IsRegister()) { |
| 1613 | // Register-register. |
| 1614 | Register temp = kScratchReg; |
| 1615 | Register src = g.ToRegister(source); |
| 1616 | if (destination->IsRegister()) { |
| 1617 | Register dst = g.ToRegister(destination); |
| 1618 | __ Move(temp, src); |
| 1619 | __ Move(src, dst); |
| 1620 | __ Move(dst, temp); |
| 1621 | } else { |
| 1622 | DCHECK(destination->IsStackSlot()); |
| 1623 | MemOperand dst = g.ToMemOperand(destination); |
| 1624 | __ mov(temp, src); |
| 1625 | __ ldr(src, dst); |
| 1626 | __ str(temp, dst); |
| 1627 | } |
| 1628 | } else if (source->IsStackSlot()) { |
| 1629 | DCHECK(destination->IsStackSlot()); |
| 1630 | Register temp_0 = kScratchReg; |
| 1631 | SwVfpRegister temp_1 = kScratchDoubleReg.low(); |
| 1632 | MemOperand src = g.ToMemOperand(source); |
| 1633 | MemOperand dst = g.ToMemOperand(destination); |
| 1634 | __ ldr(temp_0, src); |
| 1635 | __ vldr(temp_1, dst); |
| 1636 | __ str(temp_0, dst); |
| 1637 | __ vstr(temp_1, src); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1638 | } else if (source->IsFPRegister()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1639 | DwVfpRegister temp = kScratchDoubleReg; |
| 1640 | DwVfpRegister src = g.ToDoubleRegister(source); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1641 | if (destination->IsFPRegister()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1642 | DwVfpRegister dst = g.ToDoubleRegister(destination); |
| 1643 | __ Move(temp, src); |
| 1644 | __ Move(src, dst); |
| 1645 | __ Move(dst, temp); |
| 1646 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1647 | DCHECK(destination->IsFPStackSlot()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1648 | MemOperand dst = g.ToMemOperand(destination); |
| 1649 | __ Move(temp, src); |
| 1650 | __ vldr(src, dst); |
| 1651 | __ vstr(temp, dst); |
| 1652 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 1653 | } else if (source->IsFPStackSlot()) { |
| 1654 | DCHECK(destination->IsFPStackSlot()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1655 | Register temp_0 = kScratchReg; |
| 1656 | DwVfpRegister temp_1 = kScratchDoubleReg; |
| 1657 | MemOperand src0 = g.ToMemOperand(source); |
| 1658 | MemOperand src1(src0.rn(), src0.offset() + kPointerSize); |
| 1659 | MemOperand dst0 = g.ToMemOperand(destination); |
| 1660 | MemOperand dst1(dst0.rn(), dst0.offset() + kPointerSize); |
| 1661 | __ vldr(temp_1, dst0); // Save destination in temp_1. |
| 1662 | __ ldr(temp_0, src0); // Then use temp_0 to copy source to destination. |
| 1663 | __ str(temp_0, dst0); |
| 1664 | __ ldr(temp_0, src1); |
| 1665 | __ str(temp_0, dst1); |
| 1666 | __ vstr(temp_1, src0); |
| 1667 | } else { |
| 1668 | // No other combinations are possible. |
| 1669 | UNREACHABLE(); |
| 1670 | } |
| 1671 | } |
| 1672 | |
| 1673 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1674 | void CodeGenerator::AssembleJumpTable(Label** targets, size_t target_count) { |
| 1675 | // On 32-bit ARM we emit the jump tables inline. |
| 1676 | UNREACHABLE(); |
| 1677 | } |
| 1678 | |
| 1679 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1680 | void CodeGenerator::EnsureSpaceForLazyDeopt() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1681 | if (!info()->ShouldEnsureSpaceForLazyDeopt()) { |
| 1682 | return; |
| 1683 | } |
| 1684 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1685 | int space_needed = Deoptimizer::patch_size(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1686 | // Ensure that we have enough space after the previous lazy-bailout |
| 1687 | // instruction for patching the code here. |
| 1688 | int current_pc = masm()->pc_offset(); |
| 1689 | if (current_pc < last_lazy_deopt_pc_ + space_needed) { |
| 1690 | // Block literal pool emission for duration of padding. |
| 1691 | v8::internal::Assembler::BlockConstPoolScope block_const_pool(masm()); |
| 1692 | int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; |
| 1693 | DCHECK_EQ(0, padding_size % v8::internal::Assembler::kInstrSize); |
| 1694 | while (padding_size > 0) { |
| 1695 | __ nop(); |
| 1696 | padding_size -= v8::internal::Assembler::kInstrSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1697 | } |
| 1698 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1699 | } |
| 1700 | |
| 1701 | #undef __ |
| 1702 | |
| 1703 | } // namespace compiler |
| 1704 | } // namespace internal |
| 1705 | } // namespace v8 |