Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2013 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/ast/scopes.h" |
| 8 | #include "src/compiler/code-generator-impl.h" |
| 9 | #include "src/compiler/gap-resolver.h" |
| 10 | #include "src/compiler/node-matchers.h" |
| 11 | #include "src/compiler/osr.h" |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 12 | #include "src/frames.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 13 | #include "src/x87/assembler-x87.h" |
| 14 | #include "src/x87/frames-x87.h" |
| 15 | #include "src/x87/macro-assembler-x87.h" |
| 16 | |
| 17 | namespace v8 { |
| 18 | namespace internal { |
| 19 | namespace compiler { |
| 20 | |
| 21 | #define __ masm()-> |
| 22 | |
| 23 | |
| 24 | // Adds X87 specific methods for decoding operands. |
| 25 | class X87OperandConverter : public InstructionOperandConverter { |
| 26 | public: |
| 27 | X87OperandConverter(CodeGenerator* gen, Instruction* instr) |
| 28 | : InstructionOperandConverter(gen, instr) {} |
| 29 | |
| 30 | Operand InputOperand(size_t index, int extra = 0) { |
| 31 | return ToOperand(instr_->InputAt(index), extra); |
| 32 | } |
| 33 | |
| 34 | Immediate InputImmediate(size_t index) { |
| 35 | return ToImmediate(instr_->InputAt(index)); |
| 36 | } |
| 37 | |
| 38 | Operand OutputOperand() { return ToOperand(instr_->Output()); } |
| 39 | |
| 40 | Operand ToOperand(InstructionOperand* op, int extra = 0) { |
| 41 | if (op->IsRegister()) { |
| 42 | DCHECK(extra == 0); |
| 43 | return Operand(ToRegister(op)); |
| 44 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 45 | DCHECK(op->IsStackSlot() || op->IsFPStackSlot()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 46 | return SlotToOperand(AllocatedOperand::cast(op)->index(), extra); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 47 | } |
| 48 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 49 | Operand SlotToOperand(int slot, int extra = 0) { |
| 50 | FrameOffset offset = frame_access_state()->GetFrameOffset(slot); |
| 51 | return Operand(offset.from_stack_pointer() ? esp : ebp, |
| 52 | offset.offset() + extra); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 53 | } |
| 54 | |
| 55 | Operand HighOperand(InstructionOperand* op) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 56 | DCHECK(op->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 57 | return ToOperand(op, kPointerSize); |
| 58 | } |
| 59 | |
| 60 | Immediate ToImmediate(InstructionOperand* operand) { |
| 61 | Constant constant = ToConstant(operand); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 62 | if (constant.type() == Constant::kInt32 && |
| 63 | (constant.rmode() == RelocInfo::WASM_MEMORY_REFERENCE || |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 64 | constant.rmode() == RelocInfo::WASM_GLOBAL_REFERENCE || |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 65 | constant.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE)) { |
| 66 | return Immediate(reinterpret_cast<Address>(constant.ToInt32()), |
| 67 | constant.rmode()); |
| 68 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 69 | switch (constant.type()) { |
| 70 | case Constant::kInt32: |
| 71 | return Immediate(constant.ToInt32()); |
| 72 | case Constant::kFloat32: |
| 73 | return Immediate( |
| 74 | isolate()->factory()->NewNumber(constant.ToFloat32(), TENURED)); |
| 75 | case Constant::kFloat64: |
| 76 | return Immediate( |
| 77 | isolate()->factory()->NewNumber(constant.ToFloat64(), TENURED)); |
| 78 | case Constant::kExternalReference: |
| 79 | return Immediate(constant.ToExternalReference()); |
| 80 | case Constant::kHeapObject: |
| 81 | return Immediate(constant.ToHeapObject()); |
| 82 | case Constant::kInt64: |
| 83 | break; |
| 84 | case Constant::kRpoNumber: |
| 85 | return Immediate::CodeRelativeOffset(ToLabel(operand)); |
| 86 | } |
| 87 | UNREACHABLE(); |
| 88 | return Immediate(-1); |
| 89 | } |
| 90 | |
| 91 | static size_t NextOffset(size_t* offset) { |
| 92 | size_t i = *offset; |
| 93 | (*offset)++; |
| 94 | return i; |
| 95 | } |
| 96 | |
| 97 | static ScaleFactor ScaleFor(AddressingMode one, AddressingMode mode) { |
| 98 | STATIC_ASSERT(0 == static_cast<int>(times_1)); |
| 99 | STATIC_ASSERT(1 == static_cast<int>(times_2)); |
| 100 | STATIC_ASSERT(2 == static_cast<int>(times_4)); |
| 101 | STATIC_ASSERT(3 == static_cast<int>(times_8)); |
| 102 | int scale = static_cast<int>(mode - one); |
| 103 | DCHECK(scale >= 0 && scale < 4); |
| 104 | return static_cast<ScaleFactor>(scale); |
| 105 | } |
| 106 | |
| 107 | Operand MemoryOperand(size_t* offset) { |
| 108 | AddressingMode mode = AddressingModeField::decode(instr_->opcode()); |
| 109 | switch (mode) { |
| 110 | case kMode_MR: { |
| 111 | Register base = InputRegister(NextOffset(offset)); |
| 112 | int32_t disp = 0; |
| 113 | return Operand(base, disp); |
| 114 | } |
| 115 | case kMode_MRI: { |
| 116 | Register base = InputRegister(NextOffset(offset)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 117 | Constant ctant = ToConstant(instr_->InputAt(NextOffset(offset))); |
| 118 | return Operand(base, ctant.ToInt32(), ctant.rmode()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 119 | } |
| 120 | case kMode_MR1: |
| 121 | case kMode_MR2: |
| 122 | case kMode_MR4: |
| 123 | case kMode_MR8: { |
| 124 | Register base = InputRegister(NextOffset(offset)); |
| 125 | Register index = InputRegister(NextOffset(offset)); |
| 126 | ScaleFactor scale = ScaleFor(kMode_MR1, mode); |
| 127 | int32_t disp = 0; |
| 128 | return Operand(base, index, scale, disp); |
| 129 | } |
| 130 | case kMode_MR1I: |
| 131 | case kMode_MR2I: |
| 132 | case kMode_MR4I: |
| 133 | case kMode_MR8I: { |
| 134 | Register base = InputRegister(NextOffset(offset)); |
| 135 | Register index = InputRegister(NextOffset(offset)); |
| 136 | ScaleFactor scale = ScaleFor(kMode_MR1I, mode); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 137 | Constant ctant = ToConstant(instr_->InputAt(NextOffset(offset))); |
| 138 | return Operand(base, index, scale, ctant.ToInt32(), ctant.rmode()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 139 | } |
| 140 | case kMode_M1: |
| 141 | case kMode_M2: |
| 142 | case kMode_M4: |
| 143 | case kMode_M8: { |
| 144 | Register index = InputRegister(NextOffset(offset)); |
| 145 | ScaleFactor scale = ScaleFor(kMode_M1, mode); |
| 146 | int32_t disp = 0; |
| 147 | return Operand(index, scale, disp); |
| 148 | } |
| 149 | case kMode_M1I: |
| 150 | case kMode_M2I: |
| 151 | case kMode_M4I: |
| 152 | case kMode_M8I: { |
| 153 | Register index = InputRegister(NextOffset(offset)); |
| 154 | ScaleFactor scale = ScaleFor(kMode_M1I, mode); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 155 | Constant ctant = ToConstant(instr_->InputAt(NextOffset(offset))); |
| 156 | return Operand(index, scale, ctant.ToInt32(), ctant.rmode()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 157 | } |
| 158 | case kMode_MI: { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 159 | Constant ctant = ToConstant(instr_->InputAt(NextOffset(offset))); |
| 160 | return Operand(ctant.ToInt32(), ctant.rmode()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 161 | } |
| 162 | case kMode_None: |
| 163 | UNREACHABLE(); |
| 164 | return Operand(no_reg, 0); |
| 165 | } |
| 166 | UNREACHABLE(); |
| 167 | return Operand(no_reg, 0); |
| 168 | } |
| 169 | |
| 170 | Operand MemoryOperand(size_t first_input = 0) { |
| 171 | return MemoryOperand(&first_input); |
| 172 | } |
| 173 | }; |
| 174 | |
| 175 | |
| 176 | namespace { |
| 177 | |
| 178 | bool HasImmediateInput(Instruction* instr, size_t index) { |
| 179 | return instr->InputAt(index)->IsImmediate(); |
| 180 | } |
| 181 | |
| 182 | |
| 183 | class OutOfLineLoadInteger final : public OutOfLineCode { |
| 184 | public: |
| 185 | OutOfLineLoadInteger(CodeGenerator* gen, Register result) |
| 186 | : OutOfLineCode(gen), result_(result) {} |
| 187 | |
| 188 | void Generate() final { __ xor_(result_, result_); } |
| 189 | |
| 190 | private: |
| 191 | Register const result_; |
| 192 | }; |
| 193 | |
| 194 | |
| 195 | class OutOfLineLoadFloat final : public OutOfLineCode { |
| 196 | public: |
| 197 | OutOfLineLoadFloat(CodeGenerator* gen, X87Register result) |
| 198 | : OutOfLineCode(gen), result_(result) {} |
| 199 | |
| 200 | void Generate() final { |
| 201 | DCHECK(result_.code() == 0); |
| 202 | USE(result_); |
| 203 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 204 | __ VerifyX87StackDepth(1); |
| 205 | } |
| 206 | __ fstp(0); |
| 207 | __ push(Immediate(0xffffffff)); |
| 208 | __ push(Immediate(0x7fffffff)); |
| 209 | __ fld_d(MemOperand(esp, 0)); |
| 210 | __ lea(esp, Operand(esp, kDoubleSize)); |
| 211 | } |
| 212 | |
| 213 | private: |
| 214 | X87Register const result_; |
| 215 | }; |
| 216 | |
| 217 | |
| 218 | class OutOfLineTruncateDoubleToI final : public OutOfLineCode { |
| 219 | public: |
| 220 | OutOfLineTruncateDoubleToI(CodeGenerator* gen, Register result, |
| 221 | X87Register input) |
| 222 | : OutOfLineCode(gen), result_(result), input_(input) {} |
| 223 | |
| 224 | void Generate() final { |
| 225 | UNIMPLEMENTED(); |
| 226 | USE(result_); |
| 227 | USE(input_); |
| 228 | } |
| 229 | |
| 230 | private: |
| 231 | Register const result_; |
| 232 | X87Register const input_; |
| 233 | }; |
| 234 | |
| 235 | |
| 236 | class OutOfLineRecordWrite final : public OutOfLineCode { |
| 237 | public: |
| 238 | OutOfLineRecordWrite(CodeGenerator* gen, Register object, Operand operand, |
| 239 | Register value, Register scratch0, Register scratch1, |
| 240 | RecordWriteMode mode) |
| 241 | : OutOfLineCode(gen), |
| 242 | object_(object), |
| 243 | operand_(operand), |
| 244 | value_(value), |
| 245 | scratch0_(scratch0), |
| 246 | scratch1_(scratch1), |
| 247 | mode_(mode) {} |
| 248 | |
| 249 | void Generate() final { |
| 250 | if (mode_ > RecordWriteMode::kValueIsPointer) { |
| 251 | __ JumpIfSmi(value_, exit()); |
| 252 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 253 | __ CheckPageFlag(value_, scratch0_, |
| 254 | MemoryChunk::kPointersToHereAreInterestingMask, zero, |
| 255 | exit()); |
| 256 | RememberedSetAction const remembered_set_action = |
| 257 | mode_ > RecordWriteMode::kValueIsMap ? EMIT_REMEMBERED_SET |
| 258 | : OMIT_REMEMBERED_SET; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 259 | SaveFPRegsMode const save_fp_mode = |
| 260 | frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs; |
| 261 | RecordWriteStub stub(isolate(), object_, scratch0_, scratch1_, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 262 | remembered_set_action, save_fp_mode); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 263 | __ lea(scratch1_, operand_); |
| 264 | __ CallStub(&stub); |
| 265 | } |
| 266 | |
| 267 | private: |
| 268 | Register const object_; |
| 269 | Operand const operand_; |
| 270 | Register const value_; |
| 271 | Register const scratch0_; |
| 272 | Register const scratch1_; |
| 273 | RecordWriteMode const mode_; |
| 274 | }; |
| 275 | |
| 276 | } // namespace |
| 277 | |
| 278 | |
| 279 | #define ASSEMBLE_CHECKED_LOAD_FLOAT(asm_instr) \ |
| 280 | do { \ |
| 281 | auto result = i.OutputDoubleRegister(); \ |
| 282 | auto offset = i.InputRegister(0); \ |
| 283 | DCHECK(result.code() == 0); \ |
| 284 | if (instr->InputAt(1)->IsRegister()) { \ |
| 285 | __ cmp(offset, i.InputRegister(1)); \ |
| 286 | } else { \ |
| 287 | __ cmp(offset, i.InputImmediate(1)); \ |
| 288 | } \ |
| 289 | OutOfLineCode* ool = new (zone()) OutOfLineLoadFloat(this, result); \ |
| 290 | __ j(above_equal, ool->entry()); \ |
| 291 | __ fstp(0); \ |
| 292 | __ asm_instr(i.MemoryOperand(2)); \ |
| 293 | __ bind(ool->exit()); \ |
| 294 | } while (false) |
| 295 | |
| 296 | |
| 297 | #define ASSEMBLE_CHECKED_LOAD_INTEGER(asm_instr) \ |
| 298 | do { \ |
| 299 | auto result = i.OutputRegister(); \ |
| 300 | auto offset = i.InputRegister(0); \ |
| 301 | if (instr->InputAt(1)->IsRegister()) { \ |
| 302 | __ cmp(offset, i.InputRegister(1)); \ |
| 303 | } else { \ |
| 304 | __ cmp(offset, i.InputImmediate(1)); \ |
| 305 | } \ |
| 306 | OutOfLineCode* ool = new (zone()) OutOfLineLoadInteger(this, result); \ |
| 307 | __ j(above_equal, ool->entry()); \ |
| 308 | __ asm_instr(result, i.MemoryOperand(2)); \ |
| 309 | __ bind(ool->exit()); \ |
| 310 | } while (false) |
| 311 | |
| 312 | |
| 313 | #define ASSEMBLE_CHECKED_STORE_FLOAT(asm_instr) \ |
| 314 | do { \ |
| 315 | auto offset = i.InputRegister(0); \ |
| 316 | if (instr->InputAt(1)->IsRegister()) { \ |
| 317 | __ cmp(offset, i.InputRegister(1)); \ |
| 318 | } else { \ |
| 319 | __ cmp(offset, i.InputImmediate(1)); \ |
| 320 | } \ |
| 321 | Label done; \ |
| 322 | DCHECK(i.InputDoubleRegister(2).code() == 0); \ |
| 323 | __ j(above_equal, &done, Label::kNear); \ |
| 324 | __ asm_instr(i.MemoryOperand(3)); \ |
| 325 | __ bind(&done); \ |
| 326 | } while (false) |
| 327 | |
| 328 | |
| 329 | #define ASSEMBLE_CHECKED_STORE_INTEGER(asm_instr) \ |
| 330 | do { \ |
| 331 | auto offset = i.InputRegister(0); \ |
| 332 | if (instr->InputAt(1)->IsRegister()) { \ |
| 333 | __ cmp(offset, i.InputRegister(1)); \ |
| 334 | } else { \ |
| 335 | __ cmp(offset, i.InputImmediate(1)); \ |
| 336 | } \ |
| 337 | Label done; \ |
| 338 | __ j(above_equal, &done, Label::kNear); \ |
| 339 | if (instr->InputAt(2)->IsRegister()) { \ |
| 340 | __ asm_instr(i.MemoryOperand(3), i.InputRegister(2)); \ |
| 341 | } else { \ |
| 342 | __ asm_instr(i.MemoryOperand(3), i.InputImmediate(2)); \ |
| 343 | } \ |
| 344 | __ bind(&done); \ |
| 345 | } while (false) |
| 346 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 347 | #define ASSEMBLE_COMPARE(asm_instr) \ |
| 348 | do { \ |
| 349 | if (AddressingModeField::decode(instr->opcode()) != kMode_None) { \ |
| 350 | size_t index = 0; \ |
| 351 | Operand left = i.MemoryOperand(&index); \ |
| 352 | if (HasImmediateInput(instr, index)) { \ |
| 353 | __ asm_instr(left, i.InputImmediate(index)); \ |
| 354 | } else { \ |
| 355 | __ asm_instr(left, i.InputRegister(index)); \ |
| 356 | } \ |
| 357 | } else { \ |
| 358 | if (HasImmediateInput(instr, 1)) { \ |
| 359 | if (instr->InputAt(0)->IsRegister()) { \ |
| 360 | __ asm_instr(i.InputRegister(0), i.InputImmediate(1)); \ |
| 361 | } else { \ |
| 362 | __ asm_instr(i.InputOperand(0), i.InputImmediate(1)); \ |
| 363 | } \ |
| 364 | } else { \ |
| 365 | if (instr->InputAt(1)->IsRegister()) { \ |
| 366 | __ asm_instr(i.InputRegister(0), i.InputRegister(1)); \ |
| 367 | } else { \ |
| 368 | __ asm_instr(i.InputRegister(0), i.InputOperand(1)); \ |
| 369 | } \ |
| 370 | } \ |
| 371 | } \ |
| 372 | } while (0) |
| 373 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 374 | #define ASSEMBLE_IEEE754_BINOP(name) \ |
| 375 | do { \ |
| 376 | /* Saves the esp into ebx */ \ |
| 377 | __ push(ebx); \ |
| 378 | __ mov(ebx, esp); \ |
| 379 | /* Pass one double as argument on the stack. */ \ |
| 380 | __ PrepareCallCFunction(4, eax); \ |
| 381 | __ fstp(0); \ |
| 382 | /* Load first operand from original stack */ \ |
| 383 | __ fld_d(MemOperand(ebx, 4 + kDoubleSize)); \ |
| 384 | /* Put first operand into stack for function call */ \ |
| 385 | __ fstp_d(Operand(esp, 0 * kDoubleSize)); \ |
| 386 | /* Load second operand from original stack */ \ |
| 387 | __ fld_d(MemOperand(ebx, 4)); \ |
| 388 | /* Put second operand into stack for function call */ \ |
| 389 | __ fstp_d(Operand(esp, 1 * kDoubleSize)); \ |
| 390 | __ CallCFunction(ExternalReference::ieee754_##name##_function(isolate()), \ |
| 391 | 4); \ |
| 392 | /* Restore the ebx */ \ |
| 393 | __ pop(ebx); \ |
| 394 | /* Return value is in st(0) on x87. */ \ |
| 395 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); \ |
| 396 | } while (false) |
| 397 | |
| 398 | #define ASSEMBLE_IEEE754_UNOP(name) \ |
| 399 | do { \ |
| 400 | /* Saves the esp into ebx */ \ |
| 401 | __ push(ebx); \ |
| 402 | __ mov(ebx, esp); \ |
| 403 | /* Pass one double as argument on the stack. */ \ |
| 404 | __ PrepareCallCFunction(2, eax); \ |
| 405 | __ fstp(0); \ |
| 406 | /* Load operand from original stack */ \ |
| 407 | __ fld_d(MemOperand(ebx, 4)); \ |
| 408 | /* Put operand into stack for function call */ \ |
| 409 | __ fstp_d(Operand(esp, 0)); \ |
| 410 | __ CallCFunction(ExternalReference::ieee754_##name##_function(isolate()), \ |
| 411 | 2); \ |
| 412 | /* Restore the ebx */ \ |
| 413 | __ pop(ebx); \ |
| 414 | /* Return value is in st(0) on x87. */ \ |
| 415 | __ lea(esp, Operand(esp, kDoubleSize)); \ |
| 416 | } while (false) |
| 417 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 418 | void CodeGenerator::AssembleDeconstructFrame() { |
| 419 | __ mov(esp, ebp); |
| 420 | __ pop(ebp); |
| 421 | } |
| 422 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 423 | void CodeGenerator::AssembleDeconstructActivationRecord(int stack_param_delta) { |
| 424 | int sp_slot_delta = TailCallFrameStackSlotDelta(stack_param_delta); |
| 425 | if (sp_slot_delta > 0) { |
| 426 | __ add(esp, Immediate(sp_slot_delta * kPointerSize)); |
| 427 | } |
| 428 | frame_access_state()->SetFrameAccessToDefault(); |
| 429 | } |
| 430 | |
| 431 | |
| 432 | void CodeGenerator::AssemblePrepareTailCall(int stack_param_delta) { |
| 433 | int sp_slot_delta = TailCallFrameStackSlotDelta(stack_param_delta); |
| 434 | if (sp_slot_delta < 0) { |
| 435 | __ sub(esp, Immediate(-sp_slot_delta * kPointerSize)); |
| 436 | frame_access_state()->IncreaseSPDelta(-sp_slot_delta); |
| 437 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 438 | if (frame_access_state()->has_frame()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 439 | __ mov(ebp, MemOperand(ebp, 0)); |
| 440 | } |
| 441 | frame_access_state()->SetFrameAccessToSP(); |
| 442 | } |
| 443 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 444 | void CodeGenerator::AssemblePopArgumentsAdaptorFrame(Register args_reg, |
| 445 | Register, Register, |
| 446 | Register) { |
| 447 | // There are not enough temp registers left on ia32 for a call instruction |
| 448 | // so we pick some scratch registers and save/restore them manually here. |
| 449 | int scratch_count = 3; |
| 450 | Register scratch1 = ebx; |
| 451 | Register scratch2 = ecx; |
| 452 | Register scratch3 = edx; |
| 453 | DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3)); |
| 454 | Label done; |
| 455 | |
| 456 | // Check if current frame is an arguments adaptor frame. |
| 457 | __ cmp(Operand(ebp, StandardFrameConstants::kContextOffset), |
| 458 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 459 | __ j(not_equal, &done, Label::kNear); |
| 460 | |
| 461 | __ push(scratch1); |
| 462 | __ push(scratch2); |
| 463 | __ push(scratch3); |
| 464 | |
| 465 | // Load arguments count from current arguments adaptor frame (note, it |
| 466 | // does not include receiver). |
| 467 | Register caller_args_count_reg = scratch1; |
| 468 | __ mov(caller_args_count_reg, |
| 469 | Operand(ebp, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 470 | __ SmiUntag(caller_args_count_reg); |
| 471 | |
| 472 | ParameterCount callee_args_count(args_reg); |
| 473 | __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2, |
| 474 | scratch3, ReturnAddressState::kOnStack, scratch_count); |
| 475 | __ pop(scratch3); |
| 476 | __ pop(scratch2); |
| 477 | __ pop(scratch1); |
| 478 | |
| 479 | __ bind(&done); |
| 480 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 481 | |
| 482 | // Assembles an instruction after register allocation, producing machine code. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 483 | CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction( |
| 484 | Instruction* instr) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 485 | X87OperandConverter i(this, instr); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 486 | InstructionCode opcode = instr->opcode(); |
| 487 | ArchOpcode arch_opcode = ArchOpcodeField::decode(opcode); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 488 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 489 | switch (arch_opcode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 490 | case kArchCallCodeObject: { |
| 491 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 492 | __ VerifyX87StackDepth(1); |
| 493 | } |
| 494 | __ fstp(0); |
| 495 | EnsureSpaceForLazyDeopt(); |
| 496 | if (HasImmediateInput(instr, 0)) { |
| 497 | Handle<Code> code = Handle<Code>::cast(i.InputHeapObject(0)); |
| 498 | __ call(code, RelocInfo::CODE_TARGET); |
| 499 | } else { |
| 500 | Register reg = i.InputRegister(0); |
| 501 | __ add(reg, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 502 | __ call(reg); |
| 503 | } |
| 504 | RecordCallPosition(instr); |
| 505 | bool double_result = |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 506 | instr->HasOutput() && instr->Output()->IsFPRegister(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 507 | if (double_result) { |
| 508 | __ lea(esp, Operand(esp, -kDoubleSize)); |
| 509 | __ fstp_d(Operand(esp, 0)); |
| 510 | } |
| 511 | __ fninit(); |
| 512 | if (double_result) { |
| 513 | __ fld_d(Operand(esp, 0)); |
| 514 | __ lea(esp, Operand(esp, kDoubleSize)); |
| 515 | } else { |
| 516 | __ fld1(); |
| 517 | } |
| 518 | frame_access_state()->ClearSPDelta(); |
| 519 | break; |
| 520 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 521 | case kArchTailCallCodeObjectFromJSFunction: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 522 | case kArchTailCallCodeObject: { |
| 523 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 524 | __ VerifyX87StackDepth(1); |
| 525 | } |
| 526 | __ fstp(0); |
| 527 | int stack_param_delta = i.InputInt32(instr->InputCount() - 1); |
| 528 | AssembleDeconstructActivationRecord(stack_param_delta); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 529 | if (arch_opcode == kArchTailCallCodeObjectFromJSFunction) { |
| 530 | AssemblePopArgumentsAdaptorFrame(kJavaScriptCallArgCountRegister, |
| 531 | no_reg, no_reg, no_reg); |
| 532 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 533 | if (HasImmediateInput(instr, 0)) { |
| 534 | Handle<Code> code = Handle<Code>::cast(i.InputHeapObject(0)); |
| 535 | __ jmp(code, RelocInfo::CODE_TARGET); |
| 536 | } else { |
| 537 | Register reg = i.InputRegister(0); |
| 538 | __ add(reg, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 539 | __ jmp(reg); |
| 540 | } |
| 541 | frame_access_state()->ClearSPDelta(); |
| 542 | break; |
| 543 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 544 | case kArchTailCallAddress: { |
| 545 | int stack_param_delta = i.InputInt32(instr->InputCount() - 1); |
| 546 | AssembleDeconstructActivationRecord(stack_param_delta); |
| 547 | CHECK(!HasImmediateInput(instr, 0)); |
| 548 | Register reg = i.InputRegister(0); |
| 549 | __ jmp(reg); |
| 550 | frame_access_state()->ClearSPDelta(); |
| 551 | break; |
| 552 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 553 | case kArchCallJSFunction: { |
| 554 | EnsureSpaceForLazyDeopt(); |
| 555 | Register func = i.InputRegister(0); |
| 556 | if (FLAG_debug_code) { |
| 557 | // Check the function's context matches the context argument. |
| 558 | __ cmp(esi, FieldOperand(func, JSFunction::kContextOffset)); |
| 559 | __ Assert(equal, kWrongFunctionContext); |
| 560 | } |
| 561 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 562 | __ VerifyX87StackDepth(1); |
| 563 | } |
| 564 | __ fstp(0); |
| 565 | __ call(FieldOperand(func, JSFunction::kCodeEntryOffset)); |
| 566 | RecordCallPosition(instr); |
| 567 | bool double_result = |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 568 | instr->HasOutput() && instr->Output()->IsFPRegister(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 569 | if (double_result) { |
| 570 | __ lea(esp, Operand(esp, -kDoubleSize)); |
| 571 | __ fstp_d(Operand(esp, 0)); |
| 572 | } |
| 573 | __ fninit(); |
| 574 | if (double_result) { |
| 575 | __ fld_d(Operand(esp, 0)); |
| 576 | __ lea(esp, Operand(esp, kDoubleSize)); |
| 577 | } else { |
| 578 | __ fld1(); |
| 579 | } |
| 580 | frame_access_state()->ClearSPDelta(); |
| 581 | break; |
| 582 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 583 | case kArchTailCallJSFunctionFromJSFunction: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 584 | case kArchTailCallJSFunction: { |
| 585 | Register func = i.InputRegister(0); |
| 586 | if (FLAG_debug_code) { |
| 587 | // Check the function's context matches the context argument. |
| 588 | __ cmp(esi, FieldOperand(func, JSFunction::kContextOffset)); |
| 589 | __ Assert(equal, kWrongFunctionContext); |
| 590 | } |
| 591 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 592 | __ VerifyX87StackDepth(1); |
| 593 | } |
| 594 | __ fstp(0); |
| 595 | int stack_param_delta = i.InputInt32(instr->InputCount() - 1); |
| 596 | AssembleDeconstructActivationRecord(stack_param_delta); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 597 | if (arch_opcode == kArchTailCallJSFunctionFromJSFunction) { |
| 598 | AssemblePopArgumentsAdaptorFrame(kJavaScriptCallArgCountRegister, |
| 599 | no_reg, no_reg, no_reg); |
| 600 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 601 | __ jmp(FieldOperand(func, JSFunction::kCodeEntryOffset)); |
| 602 | frame_access_state()->ClearSPDelta(); |
| 603 | break; |
| 604 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 605 | case kArchPrepareCallCFunction: { |
| 606 | // Frame alignment requires using FP-relative frame addressing. |
| 607 | frame_access_state()->SetFrameAccessToFP(); |
| 608 | int const num_parameters = MiscField::decode(instr->opcode()); |
| 609 | __ PrepareCallCFunction(num_parameters, i.TempRegister(0)); |
| 610 | break; |
| 611 | } |
| 612 | case kArchPrepareTailCall: |
| 613 | AssemblePrepareTailCall(i.InputInt32(instr->InputCount() - 1)); |
| 614 | break; |
| 615 | case kArchCallCFunction: { |
| 616 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 617 | __ VerifyX87StackDepth(1); |
| 618 | } |
| 619 | __ fstp(0); |
| 620 | int const num_parameters = MiscField::decode(instr->opcode()); |
| 621 | if (HasImmediateInput(instr, 0)) { |
| 622 | ExternalReference ref = i.InputExternalReference(0); |
| 623 | __ CallCFunction(ref, num_parameters); |
| 624 | } else { |
| 625 | Register func = i.InputRegister(0); |
| 626 | __ CallCFunction(func, num_parameters); |
| 627 | } |
| 628 | bool double_result = |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 629 | instr->HasOutput() && instr->Output()->IsFPRegister(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 630 | if (double_result) { |
| 631 | __ lea(esp, Operand(esp, -kDoubleSize)); |
| 632 | __ fstp_d(Operand(esp, 0)); |
| 633 | } |
| 634 | __ fninit(); |
| 635 | if (double_result) { |
| 636 | __ fld_d(Operand(esp, 0)); |
| 637 | __ lea(esp, Operand(esp, kDoubleSize)); |
| 638 | } else { |
| 639 | __ fld1(); |
| 640 | } |
| 641 | frame_access_state()->SetFrameAccessToDefault(); |
| 642 | frame_access_state()->ClearSPDelta(); |
| 643 | break; |
| 644 | } |
| 645 | case kArchJmp: |
| 646 | AssembleArchJump(i.InputRpo(0)); |
| 647 | break; |
| 648 | case kArchLookupSwitch: |
| 649 | AssembleArchLookupSwitch(instr); |
| 650 | break; |
| 651 | case kArchTableSwitch: |
| 652 | AssembleArchTableSwitch(instr); |
| 653 | break; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 654 | case kArchComment: { |
| 655 | Address comment_string = i.InputExternalReference(0).address(); |
| 656 | __ RecordComment(reinterpret_cast<const char*>(comment_string)); |
| 657 | break; |
| 658 | } |
| 659 | case kArchDebugBreak: |
| 660 | __ int3(); |
| 661 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 662 | case kArchNop: |
| 663 | case kArchThrowTerminator: |
| 664 | // don't emit code for nops. |
| 665 | break; |
| 666 | case kArchDeoptimize: { |
| 667 | int deopt_state_id = |
| 668 | BuildTranslation(instr, -1, 0, OutputFrameStateCombine::Ignore()); |
| 669 | int double_register_param_count = 0; |
| 670 | int x87_layout = 0; |
| 671 | for (size_t i = 0; i < instr->InputCount(); i++) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 672 | if (instr->InputAt(i)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 673 | double_register_param_count++; |
| 674 | } |
| 675 | } |
| 676 | // Currently we use only one X87 register. If double_register_param_count |
| 677 | // is bigger than 1, it means duplicated double register is added to input |
| 678 | // of this instruction. |
| 679 | if (double_register_param_count > 0) { |
| 680 | x87_layout = (0 << 3) | 1; |
| 681 | } |
| 682 | // The layout of x87 register stack is loaded on the top of FPU register |
| 683 | // stack for deoptimization. |
| 684 | __ push(Immediate(x87_layout)); |
| 685 | __ fild_s(MemOperand(esp, 0)); |
| 686 | __ lea(esp, Operand(esp, kPointerSize)); |
| 687 | |
| 688 | Deoptimizer::BailoutType bailout_type = |
| 689 | Deoptimizer::BailoutType(MiscField::decode(instr->opcode())); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 690 | CodeGenResult result = |
| 691 | AssembleDeoptimizerCall(deopt_state_id, bailout_type); |
| 692 | if (result != kSuccess) return result; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 693 | break; |
| 694 | } |
| 695 | case kArchRet: |
| 696 | AssembleReturn(); |
| 697 | break; |
| 698 | case kArchFramePointer: |
| 699 | __ mov(i.OutputRegister(), ebp); |
| 700 | break; |
| 701 | case kArchStackPointer: |
| 702 | __ mov(i.OutputRegister(), esp); |
| 703 | break; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 704 | case kArchParentFramePointer: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 705 | if (frame_access_state()->has_frame()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 706 | __ mov(i.OutputRegister(), Operand(ebp, 0)); |
| 707 | } else { |
| 708 | __ mov(i.OutputRegister(), ebp); |
| 709 | } |
| 710 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 711 | case kArchTruncateDoubleToI: { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 712 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 713 | __ fld_d(i.InputOperand(0)); |
| 714 | } |
| 715 | __ TruncateX87TOSToI(i.OutputRegister()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 716 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 717 | __ fstp(0); |
| 718 | } |
| 719 | break; |
| 720 | } |
| 721 | case kArchStoreWithWriteBarrier: { |
| 722 | RecordWriteMode mode = |
| 723 | static_cast<RecordWriteMode>(MiscField::decode(instr->opcode())); |
| 724 | Register object = i.InputRegister(0); |
| 725 | size_t index = 0; |
| 726 | Operand operand = i.MemoryOperand(&index); |
| 727 | Register value = i.InputRegister(index); |
| 728 | Register scratch0 = i.TempRegister(0); |
| 729 | Register scratch1 = i.TempRegister(1); |
| 730 | auto ool = new (zone()) OutOfLineRecordWrite(this, object, operand, value, |
| 731 | scratch0, scratch1, mode); |
| 732 | __ mov(operand, value); |
| 733 | __ CheckPageFlag(object, scratch0, |
| 734 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 735 | not_zero, ool->entry()); |
| 736 | __ bind(ool->exit()); |
| 737 | break; |
| 738 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 739 | case kArchStackSlot: { |
| 740 | FrameOffset offset = |
| 741 | frame_access_state()->GetFrameOffset(i.InputInt32(0)); |
| 742 | Register base; |
| 743 | if (offset.from_stack_pointer()) { |
| 744 | base = esp; |
| 745 | } else { |
| 746 | base = ebp; |
| 747 | } |
| 748 | __ lea(i.OutputRegister(), Operand(base, offset.offset())); |
| 749 | break; |
| 750 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 751 | case kIeee754Float64Atan: |
| 752 | ASSEMBLE_IEEE754_UNOP(atan); |
| 753 | break; |
| 754 | case kIeee754Float64Atan2: |
| 755 | ASSEMBLE_IEEE754_BINOP(atan2); |
| 756 | break; |
| 757 | case kIeee754Float64Cbrt: |
| 758 | ASSEMBLE_IEEE754_UNOP(cbrt); |
| 759 | break; |
| 760 | case kIeee754Float64Cos: |
| 761 | __ X87SetFPUCW(0x027F); |
| 762 | ASSEMBLE_IEEE754_UNOP(cos); |
| 763 | __ X87SetFPUCW(0x037F); |
| 764 | break; |
| 765 | case kIeee754Float64Expm1: |
| 766 | __ X87SetFPUCW(0x027F); |
| 767 | ASSEMBLE_IEEE754_UNOP(expm1); |
| 768 | __ X87SetFPUCW(0x037F); |
| 769 | break; |
| 770 | case kIeee754Float64Exp: |
| 771 | ASSEMBLE_IEEE754_UNOP(exp); |
| 772 | break; |
| 773 | case kIeee754Float64Atanh: |
| 774 | ASSEMBLE_IEEE754_UNOP(atanh); |
| 775 | break; |
| 776 | case kIeee754Float64Log: |
| 777 | ASSEMBLE_IEEE754_UNOP(log); |
| 778 | break; |
| 779 | case kIeee754Float64Log1p: |
| 780 | ASSEMBLE_IEEE754_UNOP(log1p); |
| 781 | break; |
| 782 | case kIeee754Float64Log2: |
| 783 | ASSEMBLE_IEEE754_UNOP(log2); |
| 784 | break; |
| 785 | case kIeee754Float64Log10: |
| 786 | ASSEMBLE_IEEE754_UNOP(log10); |
| 787 | break; |
| 788 | case kIeee754Float64Sin: |
| 789 | __ X87SetFPUCW(0x027F); |
| 790 | ASSEMBLE_IEEE754_UNOP(sin); |
| 791 | __ X87SetFPUCW(0x037F); |
| 792 | break; |
| 793 | case kIeee754Float64Tan: |
| 794 | __ X87SetFPUCW(0x027F); |
| 795 | ASSEMBLE_IEEE754_UNOP(tan); |
| 796 | __ X87SetFPUCW(0x037F); |
| 797 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 798 | case kX87Add: |
| 799 | if (HasImmediateInput(instr, 1)) { |
| 800 | __ add(i.InputOperand(0), i.InputImmediate(1)); |
| 801 | } else { |
| 802 | __ add(i.InputRegister(0), i.InputOperand(1)); |
| 803 | } |
| 804 | break; |
| 805 | case kX87And: |
| 806 | if (HasImmediateInput(instr, 1)) { |
| 807 | __ and_(i.InputOperand(0), i.InputImmediate(1)); |
| 808 | } else { |
| 809 | __ and_(i.InputRegister(0), i.InputOperand(1)); |
| 810 | } |
| 811 | break; |
| 812 | case kX87Cmp: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 813 | ASSEMBLE_COMPARE(cmp); |
| 814 | break; |
| 815 | case kX87Cmp16: |
| 816 | ASSEMBLE_COMPARE(cmpw); |
| 817 | break; |
| 818 | case kX87Cmp8: |
| 819 | ASSEMBLE_COMPARE(cmpb); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 820 | break; |
| 821 | case kX87Test: |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 822 | ASSEMBLE_COMPARE(test); |
| 823 | break; |
| 824 | case kX87Test16: |
| 825 | ASSEMBLE_COMPARE(test_w); |
| 826 | break; |
| 827 | case kX87Test8: |
| 828 | ASSEMBLE_COMPARE(test_b); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 829 | break; |
| 830 | case kX87Imul: |
| 831 | if (HasImmediateInput(instr, 1)) { |
| 832 | __ imul(i.OutputRegister(), i.InputOperand(0), i.InputInt32(1)); |
| 833 | } else { |
| 834 | __ imul(i.OutputRegister(), i.InputOperand(1)); |
| 835 | } |
| 836 | break; |
| 837 | case kX87ImulHigh: |
| 838 | __ imul(i.InputRegister(1)); |
| 839 | break; |
| 840 | case kX87UmulHigh: |
| 841 | __ mul(i.InputRegister(1)); |
| 842 | break; |
| 843 | case kX87Idiv: |
| 844 | __ cdq(); |
| 845 | __ idiv(i.InputOperand(1)); |
| 846 | break; |
| 847 | case kX87Udiv: |
| 848 | __ Move(edx, Immediate(0)); |
| 849 | __ div(i.InputOperand(1)); |
| 850 | break; |
| 851 | case kX87Not: |
| 852 | __ not_(i.OutputOperand()); |
| 853 | break; |
| 854 | case kX87Neg: |
| 855 | __ neg(i.OutputOperand()); |
| 856 | break; |
| 857 | case kX87Or: |
| 858 | if (HasImmediateInput(instr, 1)) { |
| 859 | __ or_(i.InputOperand(0), i.InputImmediate(1)); |
| 860 | } else { |
| 861 | __ or_(i.InputRegister(0), i.InputOperand(1)); |
| 862 | } |
| 863 | break; |
| 864 | case kX87Xor: |
| 865 | if (HasImmediateInput(instr, 1)) { |
| 866 | __ xor_(i.InputOperand(0), i.InputImmediate(1)); |
| 867 | } else { |
| 868 | __ xor_(i.InputRegister(0), i.InputOperand(1)); |
| 869 | } |
| 870 | break; |
| 871 | case kX87Sub: |
| 872 | if (HasImmediateInput(instr, 1)) { |
| 873 | __ sub(i.InputOperand(0), i.InputImmediate(1)); |
| 874 | } else { |
| 875 | __ sub(i.InputRegister(0), i.InputOperand(1)); |
| 876 | } |
| 877 | break; |
| 878 | case kX87Shl: |
| 879 | if (HasImmediateInput(instr, 1)) { |
| 880 | __ shl(i.OutputOperand(), i.InputInt5(1)); |
| 881 | } else { |
| 882 | __ shl_cl(i.OutputOperand()); |
| 883 | } |
| 884 | break; |
| 885 | case kX87Shr: |
| 886 | if (HasImmediateInput(instr, 1)) { |
| 887 | __ shr(i.OutputOperand(), i.InputInt5(1)); |
| 888 | } else { |
| 889 | __ shr_cl(i.OutputOperand()); |
| 890 | } |
| 891 | break; |
| 892 | case kX87Sar: |
| 893 | if (HasImmediateInput(instr, 1)) { |
| 894 | __ sar(i.OutputOperand(), i.InputInt5(1)); |
| 895 | } else { |
| 896 | __ sar_cl(i.OutputOperand()); |
| 897 | } |
| 898 | break; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 899 | case kX87AddPair: { |
| 900 | // i.OutputRegister(0) == i.InputRegister(0) ... left low word. |
| 901 | // i.InputRegister(1) ... left high word. |
| 902 | // i.InputRegister(2) ... right low word. |
| 903 | // i.InputRegister(3) ... right high word. |
| 904 | bool use_temp = false; |
| 905 | if (i.OutputRegister(0).code() == i.InputRegister(1).code() || |
| 906 | i.OutputRegister(0).code() == i.InputRegister(3).code()) { |
| 907 | // We cannot write to the output register directly, because it would |
| 908 | // overwrite an input for adc. We have to use the temp register. |
| 909 | use_temp = true; |
| 910 | __ Move(i.TempRegister(0), i.InputRegister(0)); |
| 911 | __ add(i.TempRegister(0), i.InputRegister(2)); |
| 912 | } else { |
| 913 | __ add(i.OutputRegister(0), i.InputRegister(2)); |
| 914 | } |
| 915 | __ adc(i.InputRegister(1), Operand(i.InputRegister(3))); |
| 916 | if (i.OutputRegister(1).code() != i.InputRegister(1).code()) { |
| 917 | __ Move(i.OutputRegister(1), i.InputRegister(1)); |
| 918 | } |
| 919 | if (use_temp) { |
| 920 | __ Move(i.OutputRegister(0), i.TempRegister(0)); |
| 921 | } |
| 922 | break; |
| 923 | } |
| 924 | case kX87SubPair: { |
| 925 | // i.OutputRegister(0) == i.InputRegister(0) ... left low word. |
| 926 | // i.InputRegister(1) ... left high word. |
| 927 | // i.InputRegister(2) ... right low word. |
| 928 | // i.InputRegister(3) ... right high word. |
| 929 | bool use_temp = false; |
| 930 | if (i.OutputRegister(0).code() == i.InputRegister(1).code() || |
| 931 | i.OutputRegister(0).code() == i.InputRegister(3).code()) { |
| 932 | // We cannot write to the output register directly, because it would |
| 933 | // overwrite an input for adc. We have to use the temp register. |
| 934 | use_temp = true; |
| 935 | __ Move(i.TempRegister(0), i.InputRegister(0)); |
| 936 | __ sub(i.TempRegister(0), i.InputRegister(2)); |
| 937 | } else { |
| 938 | __ sub(i.OutputRegister(0), i.InputRegister(2)); |
| 939 | } |
| 940 | __ sbb(i.InputRegister(1), Operand(i.InputRegister(3))); |
| 941 | if (i.OutputRegister(1).code() != i.InputRegister(1).code()) { |
| 942 | __ Move(i.OutputRegister(1), i.InputRegister(1)); |
| 943 | } |
| 944 | if (use_temp) { |
| 945 | __ Move(i.OutputRegister(0), i.TempRegister(0)); |
| 946 | } |
| 947 | break; |
| 948 | } |
| 949 | case kX87MulPair: { |
| 950 | __ imul(i.OutputRegister(1), i.InputOperand(0)); |
| 951 | __ mov(i.TempRegister(0), i.InputOperand(1)); |
| 952 | __ imul(i.TempRegister(0), i.InputOperand(2)); |
| 953 | __ add(i.OutputRegister(1), i.TempRegister(0)); |
| 954 | __ mov(i.OutputRegister(0), i.InputOperand(0)); |
| 955 | // Multiplies the low words and stores them in eax and edx. |
| 956 | __ mul(i.InputRegister(2)); |
| 957 | __ add(i.OutputRegister(1), i.TempRegister(0)); |
| 958 | |
| 959 | break; |
| 960 | } |
| 961 | case kX87ShlPair: |
| 962 | if (HasImmediateInput(instr, 2)) { |
| 963 | __ ShlPair(i.InputRegister(1), i.InputRegister(0), i.InputInt6(2)); |
| 964 | } else { |
| 965 | // Shift has been loaded into CL by the register allocator. |
| 966 | __ ShlPair_cl(i.InputRegister(1), i.InputRegister(0)); |
| 967 | } |
| 968 | break; |
| 969 | case kX87ShrPair: |
| 970 | if (HasImmediateInput(instr, 2)) { |
| 971 | __ ShrPair(i.InputRegister(1), i.InputRegister(0), i.InputInt6(2)); |
| 972 | } else { |
| 973 | // Shift has been loaded into CL by the register allocator. |
| 974 | __ ShrPair_cl(i.InputRegister(1), i.InputRegister(0)); |
| 975 | } |
| 976 | break; |
| 977 | case kX87SarPair: |
| 978 | if (HasImmediateInput(instr, 2)) { |
| 979 | __ SarPair(i.InputRegister(1), i.InputRegister(0), i.InputInt6(2)); |
| 980 | } else { |
| 981 | // Shift has been loaded into CL by the register allocator. |
| 982 | __ SarPair_cl(i.InputRegister(1), i.InputRegister(0)); |
| 983 | } |
| 984 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 985 | case kX87Ror: |
| 986 | if (HasImmediateInput(instr, 1)) { |
| 987 | __ ror(i.OutputOperand(), i.InputInt5(1)); |
| 988 | } else { |
| 989 | __ ror_cl(i.OutputOperand()); |
| 990 | } |
| 991 | break; |
| 992 | case kX87Lzcnt: |
| 993 | __ Lzcnt(i.OutputRegister(), i.InputOperand(0)); |
| 994 | break; |
| 995 | case kX87Popcnt: |
| 996 | __ Popcnt(i.OutputRegister(), i.InputOperand(0)); |
| 997 | break; |
| 998 | case kX87LoadFloat64Constant: { |
| 999 | InstructionOperand* source = instr->InputAt(0); |
| 1000 | InstructionOperand* destination = instr->Output(); |
| 1001 | DCHECK(source->IsConstant()); |
| 1002 | X87OperandConverter g(this, nullptr); |
| 1003 | Constant src_constant = g.ToConstant(source); |
| 1004 | |
| 1005 | DCHECK_EQ(Constant::kFloat64, src_constant.type()); |
| 1006 | uint64_t src = bit_cast<uint64_t>(src_constant.ToFloat64()); |
| 1007 | uint32_t lower = static_cast<uint32_t>(src); |
| 1008 | uint32_t upper = static_cast<uint32_t>(src >> 32); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1009 | if (destination->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1010 | __ sub(esp, Immediate(kDoubleSize)); |
| 1011 | __ mov(MemOperand(esp, 0), Immediate(lower)); |
| 1012 | __ mov(MemOperand(esp, kInt32Size), Immediate(upper)); |
| 1013 | __ fstp(0); |
| 1014 | __ fld_d(MemOperand(esp, 0)); |
| 1015 | __ add(esp, Immediate(kDoubleSize)); |
| 1016 | } else { |
| 1017 | UNREACHABLE(); |
| 1018 | } |
| 1019 | break; |
| 1020 | } |
| 1021 | case kX87Float32Cmp: { |
| 1022 | __ fld_s(MemOperand(esp, kFloatSize)); |
| 1023 | __ fld_s(MemOperand(esp, 0)); |
| 1024 | __ FCmp(); |
| 1025 | __ lea(esp, Operand(esp, 2 * kFloatSize)); |
| 1026 | break; |
| 1027 | } |
| 1028 | case kX87Float32Add: { |
| 1029 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1030 | __ VerifyX87StackDepth(1); |
| 1031 | } |
| 1032 | __ X87SetFPUCW(0x027F); |
| 1033 | __ fstp(0); |
| 1034 | __ fld_s(MemOperand(esp, 0)); |
| 1035 | __ fld_s(MemOperand(esp, kFloatSize)); |
| 1036 | __ faddp(); |
| 1037 | // Clear stack. |
| 1038 | __ lea(esp, Operand(esp, 2 * kFloatSize)); |
| 1039 | // Restore the default value of control word. |
| 1040 | __ X87SetFPUCW(0x037F); |
| 1041 | break; |
| 1042 | } |
| 1043 | case kX87Float32Sub: { |
| 1044 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1045 | __ VerifyX87StackDepth(1); |
| 1046 | } |
| 1047 | __ X87SetFPUCW(0x027F); |
| 1048 | __ fstp(0); |
| 1049 | __ fld_s(MemOperand(esp, kFloatSize)); |
| 1050 | __ fld_s(MemOperand(esp, 0)); |
| 1051 | __ fsubp(); |
| 1052 | // Clear stack. |
| 1053 | __ lea(esp, Operand(esp, 2 * kFloatSize)); |
| 1054 | // Restore the default value of control word. |
| 1055 | __ X87SetFPUCW(0x037F); |
| 1056 | break; |
| 1057 | } |
| 1058 | case kX87Float32Mul: { |
| 1059 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1060 | __ VerifyX87StackDepth(1); |
| 1061 | } |
| 1062 | __ X87SetFPUCW(0x027F); |
| 1063 | __ fstp(0); |
| 1064 | __ fld_s(MemOperand(esp, kFloatSize)); |
| 1065 | __ fld_s(MemOperand(esp, 0)); |
| 1066 | __ fmulp(); |
| 1067 | // Clear stack. |
| 1068 | __ lea(esp, Operand(esp, 2 * kFloatSize)); |
| 1069 | // Restore the default value of control word. |
| 1070 | __ X87SetFPUCW(0x037F); |
| 1071 | break; |
| 1072 | } |
| 1073 | case kX87Float32Div: { |
| 1074 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1075 | __ VerifyX87StackDepth(1); |
| 1076 | } |
| 1077 | __ X87SetFPUCW(0x027F); |
| 1078 | __ fstp(0); |
| 1079 | __ fld_s(MemOperand(esp, kFloatSize)); |
| 1080 | __ fld_s(MemOperand(esp, 0)); |
| 1081 | __ fdivp(); |
| 1082 | // Clear stack. |
| 1083 | __ lea(esp, Operand(esp, 2 * kFloatSize)); |
| 1084 | // Restore the default value of control word. |
| 1085 | __ X87SetFPUCW(0x037F); |
| 1086 | break; |
| 1087 | } |
| 1088 | case kX87Float32Max: { |
| 1089 | Label check_nan_left, check_zero, return_left, return_right; |
| 1090 | Condition condition = below; |
| 1091 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1092 | __ VerifyX87StackDepth(1); |
| 1093 | } |
| 1094 | __ fstp(0); |
| 1095 | __ fld_s(MemOperand(esp, kFloatSize)); |
| 1096 | __ fld_s(MemOperand(esp, 0)); |
| 1097 | __ fld(1); |
| 1098 | __ fld(1); |
| 1099 | __ FCmp(); |
| 1100 | |
| 1101 | // At least one NaN. |
| 1102 | // Return the second operands if one of the two operands is NaN |
| 1103 | __ j(parity_even, &return_right, Label::kNear); |
| 1104 | __ j(equal, &check_zero, Label::kNear); // left == right. |
| 1105 | __ j(condition, &return_left, Label::kNear); |
| 1106 | __ jmp(&return_right, Label::kNear); |
| 1107 | |
| 1108 | __ bind(&check_zero); |
| 1109 | __ fld(0); |
| 1110 | __ fldz(); |
| 1111 | __ FCmp(); |
| 1112 | __ j(not_equal, &return_left, Label::kNear); // left == right != 0. |
| 1113 | |
| 1114 | __ fadd(1); |
| 1115 | __ jmp(&return_left, Label::kNear); |
| 1116 | |
| 1117 | __ bind(&return_right); |
| 1118 | __ fxch(); |
| 1119 | |
| 1120 | __ bind(&return_left); |
| 1121 | __ fstp(0); |
| 1122 | __ lea(esp, Operand(esp, 2 * kFloatSize)); |
| 1123 | break; |
| 1124 | } |
| 1125 | case kX87Float32Min: { |
| 1126 | Label check_nan_left, check_zero, return_left, return_right; |
| 1127 | Condition condition = above; |
| 1128 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1129 | __ VerifyX87StackDepth(1); |
| 1130 | } |
| 1131 | __ fstp(0); |
| 1132 | __ fld_s(MemOperand(esp, kFloatSize)); |
| 1133 | __ fld_s(MemOperand(esp, 0)); |
| 1134 | __ fld(1); |
| 1135 | __ fld(1); |
| 1136 | __ FCmp(); |
| 1137 | // At least one NaN. |
| 1138 | // Return the second operands if one of the two operands is NaN |
| 1139 | __ j(parity_even, &return_right, Label::kNear); |
| 1140 | __ j(equal, &check_zero, Label::kNear); // left == right. |
| 1141 | __ j(condition, &return_left, Label::kNear); |
| 1142 | __ jmp(&return_right, Label::kNear); |
| 1143 | |
| 1144 | __ bind(&check_zero); |
| 1145 | __ fld(0); |
| 1146 | __ fldz(); |
| 1147 | __ FCmp(); |
| 1148 | __ j(not_equal, &return_left, Label::kNear); // left == right != 0. |
| 1149 | // At this point, both left and right are either 0 or -0. |
| 1150 | // Push st0 and st1 to stack, then pop them to temp registers and OR them, |
| 1151 | // load it to left. |
| 1152 | __ push(eax); |
| 1153 | __ fld(1); |
| 1154 | __ fld(1); |
| 1155 | __ sub(esp, Immediate(2 * kPointerSize)); |
| 1156 | __ fstp_s(MemOperand(esp, 0)); |
| 1157 | __ fstp_s(MemOperand(esp, kPointerSize)); |
| 1158 | __ pop(eax); |
| 1159 | __ xor_(MemOperand(esp, 0), eax); |
| 1160 | __ fstp(0); |
| 1161 | __ fld_s(MemOperand(esp, 0)); |
| 1162 | __ pop(eax); // restore esp |
| 1163 | __ pop(eax); // restore esp |
| 1164 | __ jmp(&return_left, Label::kNear); |
| 1165 | |
| 1166 | |
| 1167 | __ bind(&return_right); |
| 1168 | __ fxch(); |
| 1169 | |
| 1170 | __ bind(&return_left); |
| 1171 | __ fstp(0); |
| 1172 | __ lea(esp, Operand(esp, 2 * kFloatSize)); |
| 1173 | break; |
| 1174 | } |
| 1175 | case kX87Float32Sqrt: { |
| 1176 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1177 | __ VerifyX87StackDepth(1); |
| 1178 | } |
| 1179 | __ fstp(0); |
| 1180 | __ fld_s(MemOperand(esp, 0)); |
| 1181 | __ fsqrt(); |
| 1182 | __ lea(esp, Operand(esp, kFloatSize)); |
| 1183 | break; |
| 1184 | } |
| 1185 | case kX87Float32Abs: { |
| 1186 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1187 | __ VerifyX87StackDepth(1); |
| 1188 | } |
| 1189 | __ fstp(0); |
| 1190 | __ fld_s(MemOperand(esp, 0)); |
| 1191 | __ fabs(); |
| 1192 | __ lea(esp, Operand(esp, kFloatSize)); |
| 1193 | break; |
| 1194 | } |
| 1195 | case kX87Float32Round: { |
| 1196 | RoundingMode mode = |
| 1197 | static_cast<RoundingMode>(MiscField::decode(instr->opcode())); |
| 1198 | // Set the correct round mode in x87 control register |
| 1199 | __ X87SetRC((mode << 10)); |
| 1200 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1201 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1202 | InstructionOperand* input = instr->InputAt(0); |
| 1203 | USE(input); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1204 | DCHECK(input->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1205 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1206 | __ VerifyX87StackDepth(1); |
| 1207 | } |
| 1208 | __ fstp(0); |
| 1209 | __ fld_s(i.InputOperand(0)); |
| 1210 | } |
| 1211 | __ frndint(); |
| 1212 | __ X87SetRC(0x0000); |
| 1213 | break; |
| 1214 | } |
| 1215 | case kX87Float64Add: { |
| 1216 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1217 | __ VerifyX87StackDepth(1); |
| 1218 | } |
| 1219 | __ X87SetFPUCW(0x027F); |
| 1220 | __ fstp(0); |
| 1221 | __ fld_d(MemOperand(esp, 0)); |
| 1222 | __ fld_d(MemOperand(esp, kDoubleSize)); |
| 1223 | __ faddp(); |
| 1224 | // Clear stack. |
| 1225 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); |
| 1226 | // Restore the default value of control word. |
| 1227 | __ X87SetFPUCW(0x037F); |
| 1228 | break; |
| 1229 | } |
| 1230 | case kX87Float64Sub: { |
| 1231 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1232 | __ VerifyX87StackDepth(1); |
| 1233 | } |
| 1234 | __ X87SetFPUCW(0x027F); |
| 1235 | __ fstp(0); |
| 1236 | __ fld_d(MemOperand(esp, kDoubleSize)); |
| 1237 | __ fsub_d(MemOperand(esp, 0)); |
| 1238 | // Clear stack. |
| 1239 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); |
| 1240 | // Restore the default value of control word. |
| 1241 | __ X87SetFPUCW(0x037F); |
| 1242 | break; |
| 1243 | } |
| 1244 | case kX87Float64Mul: { |
| 1245 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1246 | __ VerifyX87StackDepth(1); |
| 1247 | } |
| 1248 | __ X87SetFPUCW(0x027F); |
| 1249 | __ fstp(0); |
| 1250 | __ fld_d(MemOperand(esp, kDoubleSize)); |
| 1251 | __ fmul_d(MemOperand(esp, 0)); |
| 1252 | // Clear stack. |
| 1253 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); |
| 1254 | // Restore the default value of control word. |
| 1255 | __ X87SetFPUCW(0x037F); |
| 1256 | break; |
| 1257 | } |
| 1258 | case kX87Float64Div: { |
| 1259 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1260 | __ VerifyX87StackDepth(1); |
| 1261 | } |
| 1262 | __ X87SetFPUCW(0x027F); |
| 1263 | __ fstp(0); |
| 1264 | __ fld_d(MemOperand(esp, kDoubleSize)); |
| 1265 | __ fdiv_d(MemOperand(esp, 0)); |
| 1266 | // Clear stack. |
| 1267 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); |
| 1268 | // Restore the default value of control word. |
| 1269 | __ X87SetFPUCW(0x037F); |
| 1270 | break; |
| 1271 | } |
| 1272 | case kX87Float64Mod: { |
| 1273 | FrameScope frame_scope(&masm_, StackFrame::MANUAL); |
| 1274 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1275 | __ VerifyX87StackDepth(1); |
| 1276 | } |
| 1277 | __ mov(eax, esp); |
| 1278 | __ PrepareCallCFunction(4, eax); |
| 1279 | __ fstp(0); |
| 1280 | __ fld_d(MemOperand(eax, 0)); |
| 1281 | __ fstp_d(Operand(esp, 1 * kDoubleSize)); |
| 1282 | __ fld_d(MemOperand(eax, kDoubleSize)); |
| 1283 | __ fstp_d(Operand(esp, 0)); |
| 1284 | __ CallCFunction(ExternalReference::mod_two_doubles_operation(isolate()), |
| 1285 | 4); |
| 1286 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); |
| 1287 | break; |
| 1288 | } |
| 1289 | case kX87Float64Max: { |
| 1290 | Label check_zero, return_left, return_right; |
| 1291 | Condition condition = below; |
| 1292 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1293 | __ VerifyX87StackDepth(1); |
| 1294 | } |
| 1295 | __ fstp(0); |
| 1296 | __ fld_d(MemOperand(esp, kDoubleSize)); |
| 1297 | __ fld_d(MemOperand(esp, 0)); |
| 1298 | __ fld(1); |
| 1299 | __ fld(1); |
| 1300 | __ FCmp(); |
| 1301 | __ j(parity_even, &return_right, |
| 1302 | Label::kNear); // At least one NaN, Return right. |
| 1303 | __ j(equal, &check_zero, Label::kNear); // left == right. |
| 1304 | __ j(condition, &return_left, Label::kNear); |
| 1305 | __ jmp(&return_right, Label::kNear); |
| 1306 | |
| 1307 | __ bind(&check_zero); |
| 1308 | __ fld(0); |
| 1309 | __ fldz(); |
| 1310 | __ FCmp(); |
| 1311 | __ j(not_equal, &return_left, Label::kNear); // left == right != 0. |
| 1312 | |
| 1313 | __ bind(&return_right); |
| 1314 | __ fxch(); |
| 1315 | |
| 1316 | __ bind(&return_left); |
| 1317 | __ fstp(0); |
| 1318 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); |
| 1319 | break; |
| 1320 | } |
| 1321 | case kX87Float64Min: { |
| 1322 | Label check_zero, return_left, return_right; |
| 1323 | Condition condition = above; |
| 1324 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1325 | __ VerifyX87StackDepth(1); |
| 1326 | } |
| 1327 | __ fstp(0); |
| 1328 | __ fld_d(MemOperand(esp, kDoubleSize)); |
| 1329 | __ fld_d(MemOperand(esp, 0)); |
| 1330 | __ fld(1); |
| 1331 | __ fld(1); |
| 1332 | __ FCmp(); |
| 1333 | __ j(parity_even, &return_right, |
| 1334 | Label::kNear); // At least one NaN, return right value. |
| 1335 | __ j(equal, &check_zero, Label::kNear); // left == right. |
| 1336 | __ j(condition, &return_left, Label::kNear); |
| 1337 | __ jmp(&return_right, Label::kNear); |
| 1338 | |
| 1339 | __ bind(&check_zero); |
| 1340 | __ fld(0); |
| 1341 | __ fldz(); |
| 1342 | __ FCmp(); |
| 1343 | __ j(not_equal, &return_left, Label::kNear); // left == right != 0. |
| 1344 | |
| 1345 | __ bind(&return_right); |
| 1346 | __ fxch(); |
| 1347 | |
| 1348 | __ bind(&return_left); |
| 1349 | __ fstp(0); |
| 1350 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); |
| 1351 | break; |
| 1352 | } |
| 1353 | case kX87Float64Abs: { |
| 1354 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1355 | __ VerifyX87StackDepth(1); |
| 1356 | } |
| 1357 | __ fstp(0); |
| 1358 | __ fld_d(MemOperand(esp, 0)); |
| 1359 | __ fabs(); |
| 1360 | __ lea(esp, Operand(esp, kDoubleSize)); |
| 1361 | break; |
| 1362 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1363 | case kX87Int32ToFloat32: { |
| 1364 | InstructionOperand* input = instr->InputAt(0); |
| 1365 | DCHECK(input->IsRegister() || input->IsStackSlot()); |
| 1366 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1367 | __ VerifyX87StackDepth(1); |
| 1368 | } |
| 1369 | __ fstp(0); |
| 1370 | if (input->IsRegister()) { |
| 1371 | Register input_reg = i.InputRegister(0); |
| 1372 | __ push(input_reg); |
| 1373 | __ fild_s(Operand(esp, 0)); |
| 1374 | __ pop(input_reg); |
| 1375 | } else { |
| 1376 | __ fild_s(i.InputOperand(0)); |
| 1377 | } |
| 1378 | break; |
| 1379 | } |
| 1380 | case kX87Uint32ToFloat32: { |
| 1381 | InstructionOperand* input = instr->InputAt(0); |
| 1382 | DCHECK(input->IsRegister() || input->IsStackSlot()); |
| 1383 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1384 | __ VerifyX87StackDepth(1); |
| 1385 | } |
| 1386 | __ fstp(0); |
| 1387 | Label msb_set_src; |
| 1388 | Label jmp_return; |
| 1389 | // Put input integer into eax(tmporarilly) |
| 1390 | __ push(eax); |
| 1391 | if (input->IsRegister()) |
| 1392 | __ mov(eax, i.InputRegister(0)); |
| 1393 | else |
| 1394 | __ mov(eax, i.InputOperand(0)); |
| 1395 | |
| 1396 | __ test(eax, eax); |
| 1397 | __ j(sign, &msb_set_src, Label::kNear); |
| 1398 | __ push(eax); |
| 1399 | __ fild_s(Operand(esp, 0)); |
| 1400 | __ pop(eax); |
| 1401 | |
| 1402 | __ jmp(&jmp_return, Label::kNear); |
| 1403 | __ bind(&msb_set_src); |
| 1404 | // Need another temp reg |
| 1405 | __ push(ebx); |
| 1406 | __ mov(ebx, eax); |
| 1407 | __ shr(eax, 1); |
| 1408 | // Recover the least significant bit to avoid rounding errors. |
| 1409 | __ and_(ebx, Immediate(1)); |
| 1410 | __ or_(eax, ebx); |
| 1411 | __ push(eax); |
| 1412 | __ fild_s(Operand(esp, 0)); |
| 1413 | __ pop(eax); |
| 1414 | __ fld(0); |
| 1415 | __ faddp(); |
| 1416 | // Restore the ebx |
| 1417 | __ pop(ebx); |
| 1418 | __ bind(&jmp_return); |
| 1419 | // Restore the eax |
| 1420 | __ pop(eax); |
| 1421 | break; |
| 1422 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1423 | case kX87Int32ToFloat64: { |
| 1424 | InstructionOperand* input = instr->InputAt(0); |
| 1425 | DCHECK(input->IsRegister() || input->IsStackSlot()); |
| 1426 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1427 | __ VerifyX87StackDepth(1); |
| 1428 | } |
| 1429 | __ fstp(0); |
| 1430 | if (input->IsRegister()) { |
| 1431 | Register input_reg = i.InputRegister(0); |
| 1432 | __ push(input_reg); |
| 1433 | __ fild_s(Operand(esp, 0)); |
| 1434 | __ pop(input_reg); |
| 1435 | } else { |
| 1436 | __ fild_s(i.InputOperand(0)); |
| 1437 | } |
| 1438 | break; |
| 1439 | } |
| 1440 | case kX87Float32ToFloat64: { |
| 1441 | InstructionOperand* input = instr->InputAt(0); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1442 | if (input->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1443 | __ sub(esp, Immediate(kDoubleSize)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1444 | __ fstp_s(MemOperand(esp, 0)); |
| 1445 | __ fld_s(MemOperand(esp, 0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1446 | __ add(esp, Immediate(kDoubleSize)); |
| 1447 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1448 | DCHECK(input->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1449 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1450 | __ VerifyX87StackDepth(1); |
| 1451 | } |
| 1452 | __ fstp(0); |
| 1453 | __ fld_s(i.InputOperand(0)); |
| 1454 | } |
| 1455 | break; |
| 1456 | } |
| 1457 | case kX87Uint32ToFloat64: { |
| 1458 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1459 | __ VerifyX87StackDepth(1); |
| 1460 | } |
| 1461 | __ fstp(0); |
| 1462 | __ LoadUint32NoSSE2(i.InputRegister(0)); |
| 1463 | break; |
| 1464 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1465 | case kX87Float32ToInt32: { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1466 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1467 | __ fld_s(i.InputOperand(0)); |
| 1468 | } |
| 1469 | __ TruncateX87TOSToI(i.OutputRegister(0)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1470 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1471 | __ fstp(0); |
| 1472 | } |
| 1473 | break; |
| 1474 | } |
| 1475 | case kX87Float32ToUint32: { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1476 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1477 | __ fld_s(i.InputOperand(0)); |
| 1478 | } |
| 1479 | Label success; |
| 1480 | __ TruncateX87TOSToI(i.OutputRegister(0)); |
| 1481 | __ test(i.OutputRegister(0), i.OutputRegister(0)); |
| 1482 | __ j(positive, &success); |
| 1483 | __ push(Immediate(INT32_MIN)); |
| 1484 | __ fild_s(Operand(esp, 0)); |
| 1485 | __ lea(esp, Operand(esp, kPointerSize)); |
| 1486 | __ faddp(); |
| 1487 | __ TruncateX87TOSToI(i.OutputRegister(0)); |
| 1488 | __ or_(i.OutputRegister(0), Immediate(0x80000000)); |
| 1489 | __ bind(&success); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1490 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1491 | __ fstp(0); |
| 1492 | } |
| 1493 | break; |
| 1494 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1495 | case kX87Float64ToInt32: { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1496 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1497 | __ fld_d(i.InputOperand(0)); |
| 1498 | } |
| 1499 | __ TruncateX87TOSToI(i.OutputRegister(0)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1500 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1501 | __ fstp(0); |
| 1502 | } |
| 1503 | break; |
| 1504 | } |
| 1505 | case kX87Float64ToFloat32: { |
| 1506 | InstructionOperand* input = instr->InputAt(0); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1507 | if (input->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1508 | __ sub(esp, Immediate(kDoubleSize)); |
| 1509 | __ fstp_s(MemOperand(esp, 0)); |
| 1510 | __ fld_s(MemOperand(esp, 0)); |
| 1511 | __ add(esp, Immediate(kDoubleSize)); |
| 1512 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1513 | DCHECK(input->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1514 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1515 | __ VerifyX87StackDepth(1); |
| 1516 | } |
| 1517 | __ fstp(0); |
| 1518 | __ fld_d(i.InputOperand(0)); |
| 1519 | __ sub(esp, Immediate(kDoubleSize)); |
| 1520 | __ fstp_s(MemOperand(esp, 0)); |
| 1521 | __ fld_s(MemOperand(esp, 0)); |
| 1522 | __ add(esp, Immediate(kDoubleSize)); |
| 1523 | } |
| 1524 | break; |
| 1525 | } |
| 1526 | case kX87Float64ToUint32: { |
| 1527 | __ push_imm32(-2147483648); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1528 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1529 | __ fld_d(i.InputOperand(0)); |
| 1530 | } |
| 1531 | __ fild_s(Operand(esp, 0)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1532 | __ fld(1); |
| 1533 | __ faddp(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1534 | __ TruncateX87TOSToI(i.OutputRegister(0)); |
| 1535 | __ add(esp, Immediate(kInt32Size)); |
| 1536 | __ add(i.OutputRegister(), Immediate(0x80000000)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1537 | __ fstp(0); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1538 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1539 | __ fstp(0); |
| 1540 | } |
| 1541 | break; |
| 1542 | } |
| 1543 | case kX87Float64ExtractHighWord32: { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1544 | if (instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1545 | __ sub(esp, Immediate(kDoubleSize)); |
| 1546 | __ fst_d(MemOperand(esp, 0)); |
| 1547 | __ mov(i.OutputRegister(), MemOperand(esp, kDoubleSize / 2)); |
| 1548 | __ add(esp, Immediate(kDoubleSize)); |
| 1549 | } else { |
| 1550 | InstructionOperand* input = instr->InputAt(0); |
| 1551 | USE(input); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1552 | DCHECK(input->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1553 | __ mov(i.OutputRegister(), i.InputOperand(0, kDoubleSize / 2)); |
| 1554 | } |
| 1555 | break; |
| 1556 | } |
| 1557 | case kX87Float64ExtractLowWord32: { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1558 | if (instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1559 | __ sub(esp, Immediate(kDoubleSize)); |
| 1560 | __ fst_d(MemOperand(esp, 0)); |
| 1561 | __ mov(i.OutputRegister(), MemOperand(esp, 0)); |
| 1562 | __ add(esp, Immediate(kDoubleSize)); |
| 1563 | } else { |
| 1564 | InstructionOperand* input = instr->InputAt(0); |
| 1565 | USE(input); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1566 | DCHECK(input->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1567 | __ mov(i.OutputRegister(), i.InputOperand(0)); |
| 1568 | } |
| 1569 | break; |
| 1570 | } |
| 1571 | case kX87Float64InsertHighWord32: { |
| 1572 | __ sub(esp, Immediate(kDoubleSize)); |
| 1573 | __ fstp_d(MemOperand(esp, 0)); |
| 1574 | __ mov(MemOperand(esp, kDoubleSize / 2), i.InputRegister(1)); |
| 1575 | __ fld_d(MemOperand(esp, 0)); |
| 1576 | __ add(esp, Immediate(kDoubleSize)); |
| 1577 | break; |
| 1578 | } |
| 1579 | case kX87Float64InsertLowWord32: { |
| 1580 | __ sub(esp, Immediate(kDoubleSize)); |
| 1581 | __ fstp_d(MemOperand(esp, 0)); |
| 1582 | __ mov(MemOperand(esp, 0), i.InputRegister(1)); |
| 1583 | __ fld_d(MemOperand(esp, 0)); |
| 1584 | __ add(esp, Immediate(kDoubleSize)); |
| 1585 | break; |
| 1586 | } |
| 1587 | case kX87Float64Sqrt: { |
| 1588 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1589 | __ VerifyX87StackDepth(1); |
| 1590 | } |
| 1591 | __ X87SetFPUCW(0x027F); |
| 1592 | __ fstp(0); |
| 1593 | __ fld_d(MemOperand(esp, 0)); |
| 1594 | __ fsqrt(); |
| 1595 | __ lea(esp, Operand(esp, kDoubleSize)); |
| 1596 | __ X87SetFPUCW(0x037F); |
| 1597 | break; |
| 1598 | } |
| 1599 | case kX87Float64Round: { |
| 1600 | RoundingMode mode = |
| 1601 | static_cast<RoundingMode>(MiscField::decode(instr->opcode())); |
| 1602 | // Set the correct round mode in x87 control register |
| 1603 | __ X87SetRC((mode << 10)); |
| 1604 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1605 | if (!instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1606 | InstructionOperand* input = instr->InputAt(0); |
| 1607 | USE(input); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1608 | DCHECK(input->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1609 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1610 | __ VerifyX87StackDepth(1); |
| 1611 | } |
| 1612 | __ fstp(0); |
| 1613 | __ fld_d(i.InputOperand(0)); |
| 1614 | } |
| 1615 | __ frndint(); |
| 1616 | __ X87SetRC(0x0000); |
| 1617 | break; |
| 1618 | } |
| 1619 | case kX87Float64Cmp: { |
| 1620 | __ fld_d(MemOperand(esp, kDoubleSize)); |
| 1621 | __ fld_d(MemOperand(esp, 0)); |
| 1622 | __ FCmp(); |
| 1623 | __ lea(esp, Operand(esp, 2 * kDoubleSize)); |
| 1624 | break; |
| 1625 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1626 | case kX87Float64SilenceNaN: { |
| 1627 | Label end, return_qnan; |
| 1628 | __ fstp(0); |
| 1629 | __ push(ebx); |
| 1630 | // Load Half word of HoleNan(SNaN) into ebx |
| 1631 | __ mov(ebx, MemOperand(esp, 2 * kInt32Size)); |
| 1632 | __ cmp(ebx, Immediate(kHoleNanUpper32)); |
| 1633 | // Check input is HoleNaN(SNaN)? |
| 1634 | __ j(equal, &return_qnan, Label::kNear); |
| 1635 | // If input isn't HoleNaN(SNaN), just load it and return |
| 1636 | __ fld_d(MemOperand(esp, 1 * kInt32Size)); |
| 1637 | __ jmp(&end); |
| 1638 | __ bind(&return_qnan); |
| 1639 | // If input is HoleNaN(SNaN), Return QNaN |
| 1640 | __ push(Immediate(0xffffffff)); |
| 1641 | __ push(Immediate(0xfff7ffff)); |
| 1642 | __ fld_d(MemOperand(esp, 0)); |
| 1643 | __ lea(esp, Operand(esp, kDoubleSize)); |
| 1644 | __ bind(&end); |
| 1645 | __ pop(ebx); |
| 1646 | // Clear stack. |
| 1647 | __ lea(esp, Operand(esp, 1 * kDoubleSize)); |
| 1648 | break; |
| 1649 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1650 | case kX87Movsxbl: |
| 1651 | __ movsx_b(i.OutputRegister(), i.MemoryOperand()); |
| 1652 | break; |
| 1653 | case kX87Movzxbl: |
| 1654 | __ movzx_b(i.OutputRegister(), i.MemoryOperand()); |
| 1655 | break; |
| 1656 | case kX87Movb: { |
| 1657 | size_t index = 0; |
| 1658 | Operand operand = i.MemoryOperand(&index); |
| 1659 | if (HasImmediateInput(instr, index)) { |
| 1660 | __ mov_b(operand, i.InputInt8(index)); |
| 1661 | } else { |
| 1662 | __ mov_b(operand, i.InputRegister(index)); |
| 1663 | } |
| 1664 | break; |
| 1665 | } |
| 1666 | case kX87Movsxwl: |
| 1667 | __ movsx_w(i.OutputRegister(), i.MemoryOperand()); |
| 1668 | break; |
| 1669 | case kX87Movzxwl: |
| 1670 | __ movzx_w(i.OutputRegister(), i.MemoryOperand()); |
| 1671 | break; |
| 1672 | case kX87Movw: { |
| 1673 | size_t index = 0; |
| 1674 | Operand operand = i.MemoryOperand(&index); |
| 1675 | if (HasImmediateInput(instr, index)) { |
| 1676 | __ mov_w(operand, i.InputInt16(index)); |
| 1677 | } else { |
| 1678 | __ mov_w(operand, i.InputRegister(index)); |
| 1679 | } |
| 1680 | break; |
| 1681 | } |
| 1682 | case kX87Movl: |
| 1683 | if (instr->HasOutput()) { |
| 1684 | __ mov(i.OutputRegister(), i.MemoryOperand()); |
| 1685 | } else { |
| 1686 | size_t index = 0; |
| 1687 | Operand operand = i.MemoryOperand(&index); |
| 1688 | if (HasImmediateInput(instr, index)) { |
| 1689 | __ mov(operand, i.InputImmediate(index)); |
| 1690 | } else { |
| 1691 | __ mov(operand, i.InputRegister(index)); |
| 1692 | } |
| 1693 | } |
| 1694 | break; |
| 1695 | case kX87Movsd: { |
| 1696 | if (instr->HasOutput()) { |
| 1697 | X87Register output = i.OutputDoubleRegister(); |
| 1698 | USE(output); |
| 1699 | DCHECK(output.code() == 0); |
| 1700 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1701 | __ VerifyX87StackDepth(1); |
| 1702 | } |
| 1703 | __ fstp(0); |
| 1704 | __ fld_d(i.MemoryOperand()); |
| 1705 | } else { |
| 1706 | size_t index = 0; |
| 1707 | Operand operand = i.MemoryOperand(&index); |
| 1708 | __ fst_d(operand); |
| 1709 | } |
| 1710 | break; |
| 1711 | } |
| 1712 | case kX87Movss: { |
| 1713 | if (instr->HasOutput()) { |
| 1714 | X87Register output = i.OutputDoubleRegister(); |
| 1715 | USE(output); |
| 1716 | DCHECK(output.code() == 0); |
| 1717 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1718 | __ VerifyX87StackDepth(1); |
| 1719 | } |
| 1720 | __ fstp(0); |
| 1721 | __ fld_s(i.MemoryOperand()); |
| 1722 | } else { |
| 1723 | size_t index = 0; |
| 1724 | Operand operand = i.MemoryOperand(&index); |
| 1725 | __ fst_s(operand); |
| 1726 | } |
| 1727 | break; |
| 1728 | } |
| 1729 | case kX87BitcastFI: { |
| 1730 | __ mov(i.OutputRegister(), MemOperand(esp, 0)); |
| 1731 | __ lea(esp, Operand(esp, kFloatSize)); |
| 1732 | break; |
| 1733 | } |
| 1734 | case kX87BitcastIF: { |
| 1735 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 1736 | __ VerifyX87StackDepth(1); |
| 1737 | } |
| 1738 | __ fstp(0); |
| 1739 | if (instr->InputAt(0)->IsRegister()) { |
| 1740 | __ lea(esp, Operand(esp, -kFloatSize)); |
| 1741 | __ mov(MemOperand(esp, 0), i.InputRegister(0)); |
| 1742 | __ fld_s(MemOperand(esp, 0)); |
| 1743 | __ lea(esp, Operand(esp, kFloatSize)); |
| 1744 | } else { |
| 1745 | __ fld_s(i.InputOperand(0)); |
| 1746 | } |
| 1747 | break; |
| 1748 | } |
| 1749 | case kX87Lea: { |
| 1750 | AddressingMode mode = AddressingModeField::decode(instr->opcode()); |
| 1751 | // Shorten "leal" to "addl", "subl" or "shll" if the register allocation |
| 1752 | // and addressing mode just happens to work out. The "addl"/"subl" forms |
| 1753 | // in these cases are faster based on measurements. |
| 1754 | if (mode == kMode_MI) { |
| 1755 | __ Move(i.OutputRegister(), Immediate(i.InputInt32(0))); |
| 1756 | } else if (i.InputRegister(0).is(i.OutputRegister())) { |
| 1757 | if (mode == kMode_MRI) { |
| 1758 | int32_t constant_summand = i.InputInt32(1); |
| 1759 | if (constant_summand > 0) { |
| 1760 | __ add(i.OutputRegister(), Immediate(constant_summand)); |
| 1761 | } else if (constant_summand < 0) { |
| 1762 | __ sub(i.OutputRegister(), Immediate(-constant_summand)); |
| 1763 | } |
| 1764 | } else if (mode == kMode_MR1) { |
| 1765 | if (i.InputRegister(1).is(i.OutputRegister())) { |
| 1766 | __ shl(i.OutputRegister(), 1); |
| 1767 | } else { |
| 1768 | __ lea(i.OutputRegister(), i.MemoryOperand()); |
| 1769 | } |
| 1770 | } else if (mode == kMode_M2) { |
| 1771 | __ shl(i.OutputRegister(), 1); |
| 1772 | } else if (mode == kMode_M4) { |
| 1773 | __ shl(i.OutputRegister(), 2); |
| 1774 | } else if (mode == kMode_M8) { |
| 1775 | __ shl(i.OutputRegister(), 3); |
| 1776 | } else { |
| 1777 | __ lea(i.OutputRegister(), i.MemoryOperand()); |
| 1778 | } |
| 1779 | } else { |
| 1780 | __ lea(i.OutputRegister(), i.MemoryOperand()); |
| 1781 | } |
| 1782 | break; |
| 1783 | } |
| 1784 | case kX87Push: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1785 | if (instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1786 | auto allocated = AllocatedOperand::cast(*instr->InputAt(0)); |
| 1787 | if (allocated.representation() == MachineRepresentation::kFloat32) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1788 | __ sub(esp, Immediate(kFloatSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1789 | __ fst_s(Operand(esp, 0)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1790 | frame_access_state()->IncreaseSPDelta(kFloatSize / kPointerSize); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1791 | } else { |
| 1792 | DCHECK(allocated.representation() == MachineRepresentation::kFloat64); |
| 1793 | __ sub(esp, Immediate(kDoubleSize)); |
| 1794 | __ fst_d(Operand(esp, 0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1795 | frame_access_state()->IncreaseSPDelta(kDoubleSize / kPointerSize); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1796 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1797 | } else if (instr->InputAt(0)->IsFPStackSlot()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1798 | auto allocated = AllocatedOperand::cast(*instr->InputAt(0)); |
| 1799 | if (allocated.representation() == MachineRepresentation::kFloat32) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1800 | __ sub(esp, Immediate(kFloatSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1801 | __ fld_s(i.InputOperand(0)); |
| 1802 | __ fstp_s(MemOperand(esp, 0)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1803 | frame_access_state()->IncreaseSPDelta(kFloatSize / kPointerSize); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1804 | } else { |
| 1805 | DCHECK(allocated.representation() == MachineRepresentation::kFloat64); |
| 1806 | __ sub(esp, Immediate(kDoubleSize)); |
| 1807 | __ fld_d(i.InputOperand(0)); |
| 1808 | __ fstp_d(MemOperand(esp, 0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1809 | frame_access_state()->IncreaseSPDelta(kDoubleSize / kPointerSize); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1810 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1811 | } else if (HasImmediateInput(instr, 0)) { |
| 1812 | __ push(i.InputImmediate(0)); |
| 1813 | frame_access_state()->IncreaseSPDelta(1); |
| 1814 | } else { |
| 1815 | __ push(i.InputOperand(0)); |
| 1816 | frame_access_state()->IncreaseSPDelta(1); |
| 1817 | } |
| 1818 | break; |
| 1819 | case kX87Poke: { |
| 1820 | int const slot = MiscField::decode(instr->opcode()); |
| 1821 | if (HasImmediateInput(instr, 0)) { |
| 1822 | __ mov(Operand(esp, slot * kPointerSize), i.InputImmediate(0)); |
| 1823 | } else { |
| 1824 | __ mov(Operand(esp, slot * kPointerSize), i.InputRegister(0)); |
| 1825 | } |
| 1826 | break; |
| 1827 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1828 | case kX87Xchgb: { |
| 1829 | size_t index = 0; |
| 1830 | Operand operand = i.MemoryOperand(&index); |
| 1831 | __ xchg_b(i.InputRegister(index), operand); |
| 1832 | break; |
| 1833 | } |
| 1834 | case kX87Xchgw: { |
| 1835 | size_t index = 0; |
| 1836 | Operand operand = i.MemoryOperand(&index); |
| 1837 | __ xchg_w(i.InputRegister(index), operand); |
| 1838 | break; |
| 1839 | } |
| 1840 | case kX87Xchgl: { |
| 1841 | size_t index = 0; |
| 1842 | Operand operand = i.MemoryOperand(&index); |
| 1843 | __ xchg(i.InputRegister(index), operand); |
| 1844 | break; |
| 1845 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1846 | case kX87PushFloat32: |
| 1847 | __ lea(esp, Operand(esp, -kFloatSize)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1848 | if (instr->InputAt(0)->IsFPStackSlot()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1849 | __ fld_s(i.InputOperand(0)); |
| 1850 | __ fstp_s(MemOperand(esp, 0)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1851 | } else if (instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1852 | __ fst_s(MemOperand(esp, 0)); |
| 1853 | } else { |
| 1854 | UNREACHABLE(); |
| 1855 | } |
| 1856 | break; |
| 1857 | case kX87PushFloat64: |
| 1858 | __ lea(esp, Operand(esp, -kDoubleSize)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1859 | if (instr->InputAt(0)->IsFPStackSlot()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1860 | __ fld_d(i.InputOperand(0)); |
| 1861 | __ fstp_d(MemOperand(esp, 0)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1862 | } else if (instr->InputAt(0)->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1863 | __ fst_d(MemOperand(esp, 0)); |
| 1864 | } else { |
| 1865 | UNREACHABLE(); |
| 1866 | } |
| 1867 | break; |
| 1868 | case kCheckedLoadInt8: |
| 1869 | ASSEMBLE_CHECKED_LOAD_INTEGER(movsx_b); |
| 1870 | break; |
| 1871 | case kCheckedLoadUint8: |
| 1872 | ASSEMBLE_CHECKED_LOAD_INTEGER(movzx_b); |
| 1873 | break; |
| 1874 | case kCheckedLoadInt16: |
| 1875 | ASSEMBLE_CHECKED_LOAD_INTEGER(movsx_w); |
| 1876 | break; |
| 1877 | case kCheckedLoadUint16: |
| 1878 | ASSEMBLE_CHECKED_LOAD_INTEGER(movzx_w); |
| 1879 | break; |
| 1880 | case kCheckedLoadWord32: |
| 1881 | ASSEMBLE_CHECKED_LOAD_INTEGER(mov); |
| 1882 | break; |
| 1883 | case kCheckedLoadFloat32: |
| 1884 | ASSEMBLE_CHECKED_LOAD_FLOAT(fld_s); |
| 1885 | break; |
| 1886 | case kCheckedLoadFloat64: |
| 1887 | ASSEMBLE_CHECKED_LOAD_FLOAT(fld_d); |
| 1888 | break; |
| 1889 | case kCheckedStoreWord8: |
| 1890 | ASSEMBLE_CHECKED_STORE_INTEGER(mov_b); |
| 1891 | break; |
| 1892 | case kCheckedStoreWord16: |
| 1893 | ASSEMBLE_CHECKED_STORE_INTEGER(mov_w); |
| 1894 | break; |
| 1895 | case kCheckedStoreWord32: |
| 1896 | ASSEMBLE_CHECKED_STORE_INTEGER(mov); |
| 1897 | break; |
| 1898 | case kCheckedStoreFloat32: |
| 1899 | ASSEMBLE_CHECKED_STORE_FLOAT(fst_s); |
| 1900 | break; |
| 1901 | case kCheckedStoreFloat64: |
| 1902 | ASSEMBLE_CHECKED_STORE_FLOAT(fst_d); |
| 1903 | break; |
| 1904 | case kX87StackCheck: { |
| 1905 | ExternalReference const stack_limit = |
| 1906 | ExternalReference::address_of_stack_limit(isolate()); |
| 1907 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 1908 | break; |
| 1909 | } |
| 1910 | case kCheckedLoadWord64: |
| 1911 | case kCheckedStoreWord64: |
| 1912 | UNREACHABLE(); // currently unsupported checked int64 load/store. |
| 1913 | break; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1914 | case kAtomicLoadInt8: |
| 1915 | case kAtomicLoadUint8: |
| 1916 | case kAtomicLoadInt16: |
| 1917 | case kAtomicLoadUint16: |
| 1918 | case kAtomicLoadWord32: |
| 1919 | case kAtomicStoreWord8: |
| 1920 | case kAtomicStoreWord16: |
| 1921 | case kAtomicStoreWord32: |
| 1922 | UNREACHABLE(); // Won't be generated by instruction selector. |
| 1923 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1924 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1925 | return kSuccess; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1926 | } // NOLINT(readability/fn_size) |
| 1927 | |
| 1928 | |
| 1929 | // Assembles a branch after an instruction. |
| 1930 | void CodeGenerator::AssembleArchBranch(Instruction* instr, BranchInfo* branch) { |
| 1931 | X87OperandConverter i(this, instr); |
| 1932 | Label::Distance flabel_distance = |
| 1933 | branch->fallthru ? Label::kNear : Label::kFar; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1934 | |
| 1935 | Label done; |
| 1936 | Label tlabel_tmp; |
| 1937 | Label flabel_tmp; |
| 1938 | Label* tlabel = &tlabel_tmp; |
| 1939 | Label* flabel = &flabel_tmp; |
| 1940 | |
| 1941 | Label* tlabel_dst = branch->true_label; |
| 1942 | Label* flabel_dst = branch->false_label; |
| 1943 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1944 | switch (branch->condition) { |
| 1945 | case kUnorderedEqual: |
| 1946 | __ j(parity_even, flabel, flabel_distance); |
| 1947 | // Fall through. |
| 1948 | case kEqual: |
| 1949 | __ j(equal, tlabel); |
| 1950 | break; |
| 1951 | case kUnorderedNotEqual: |
| 1952 | __ j(parity_even, tlabel); |
| 1953 | // Fall through. |
| 1954 | case kNotEqual: |
| 1955 | __ j(not_equal, tlabel); |
| 1956 | break; |
| 1957 | case kSignedLessThan: |
| 1958 | __ j(less, tlabel); |
| 1959 | break; |
| 1960 | case kSignedGreaterThanOrEqual: |
| 1961 | __ j(greater_equal, tlabel); |
| 1962 | break; |
| 1963 | case kSignedLessThanOrEqual: |
| 1964 | __ j(less_equal, tlabel); |
| 1965 | break; |
| 1966 | case kSignedGreaterThan: |
| 1967 | __ j(greater, tlabel); |
| 1968 | break; |
| 1969 | case kUnsignedLessThan: |
| 1970 | __ j(below, tlabel); |
| 1971 | break; |
| 1972 | case kUnsignedGreaterThanOrEqual: |
| 1973 | __ j(above_equal, tlabel); |
| 1974 | break; |
| 1975 | case kUnsignedLessThanOrEqual: |
| 1976 | __ j(below_equal, tlabel); |
| 1977 | break; |
| 1978 | case kUnsignedGreaterThan: |
| 1979 | __ j(above, tlabel); |
| 1980 | break; |
| 1981 | case kOverflow: |
| 1982 | __ j(overflow, tlabel); |
| 1983 | break; |
| 1984 | case kNotOverflow: |
| 1985 | __ j(no_overflow, tlabel); |
| 1986 | break; |
| 1987 | default: |
| 1988 | UNREACHABLE(); |
| 1989 | break; |
| 1990 | } |
| 1991 | // Add a jump if not falling through to the next block. |
| 1992 | if (!branch->fallthru) __ jmp(flabel); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1993 | |
| 1994 | __ jmp(&done); |
| 1995 | __ bind(&tlabel_tmp); |
| 1996 | FlagsMode mode = FlagsModeField::decode(instr->opcode()); |
| 1997 | if (mode == kFlags_deoptimize) { |
| 1998 | int double_register_param_count = 0; |
| 1999 | int x87_layout = 0; |
| 2000 | for (size_t i = 0; i < instr->InputCount(); i++) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2001 | if (instr->InputAt(i)->IsFPRegister()) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2002 | double_register_param_count++; |
| 2003 | } |
| 2004 | } |
| 2005 | // Currently we use only one X87 register. If double_register_param_count |
| 2006 | // is bigger than 1, it means duplicated double register is added to input |
| 2007 | // of this instruction. |
| 2008 | if (double_register_param_count > 0) { |
| 2009 | x87_layout = (0 << 3) | 1; |
| 2010 | } |
| 2011 | // The layout of x87 register stack is loaded on the top of FPU register |
| 2012 | // stack for deoptimization. |
| 2013 | __ push(Immediate(x87_layout)); |
| 2014 | __ fild_s(MemOperand(esp, 0)); |
| 2015 | __ lea(esp, Operand(esp, kPointerSize)); |
| 2016 | } |
| 2017 | __ jmp(tlabel_dst); |
| 2018 | __ bind(&flabel_tmp); |
| 2019 | __ jmp(flabel_dst); |
| 2020 | __ bind(&done); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2021 | } |
| 2022 | |
| 2023 | |
| 2024 | void CodeGenerator::AssembleArchJump(RpoNumber target) { |
| 2025 | if (!IsNextInAssemblyOrder(target)) __ jmp(GetLabel(target)); |
| 2026 | } |
| 2027 | |
| 2028 | |
| 2029 | // Assembles boolean materializations after an instruction. |
| 2030 | void CodeGenerator::AssembleArchBoolean(Instruction* instr, |
| 2031 | FlagsCondition condition) { |
| 2032 | X87OperandConverter i(this, instr); |
| 2033 | Label done; |
| 2034 | |
| 2035 | // Materialize a full 32-bit 1 or 0 value. The result register is always the |
| 2036 | // last output of the instruction. |
| 2037 | Label check; |
| 2038 | DCHECK_NE(0u, instr->OutputCount()); |
| 2039 | Register reg = i.OutputRegister(instr->OutputCount() - 1); |
| 2040 | Condition cc = no_condition; |
| 2041 | switch (condition) { |
| 2042 | case kUnorderedEqual: |
| 2043 | __ j(parity_odd, &check, Label::kNear); |
| 2044 | __ Move(reg, Immediate(0)); |
| 2045 | __ jmp(&done, Label::kNear); |
| 2046 | // Fall through. |
| 2047 | case kEqual: |
| 2048 | cc = equal; |
| 2049 | break; |
| 2050 | case kUnorderedNotEqual: |
| 2051 | __ j(parity_odd, &check, Label::kNear); |
| 2052 | __ mov(reg, Immediate(1)); |
| 2053 | __ jmp(&done, Label::kNear); |
| 2054 | // Fall through. |
| 2055 | case kNotEqual: |
| 2056 | cc = not_equal; |
| 2057 | break; |
| 2058 | case kSignedLessThan: |
| 2059 | cc = less; |
| 2060 | break; |
| 2061 | case kSignedGreaterThanOrEqual: |
| 2062 | cc = greater_equal; |
| 2063 | break; |
| 2064 | case kSignedLessThanOrEqual: |
| 2065 | cc = less_equal; |
| 2066 | break; |
| 2067 | case kSignedGreaterThan: |
| 2068 | cc = greater; |
| 2069 | break; |
| 2070 | case kUnsignedLessThan: |
| 2071 | cc = below; |
| 2072 | break; |
| 2073 | case kUnsignedGreaterThanOrEqual: |
| 2074 | cc = above_equal; |
| 2075 | break; |
| 2076 | case kUnsignedLessThanOrEqual: |
| 2077 | cc = below_equal; |
| 2078 | break; |
| 2079 | case kUnsignedGreaterThan: |
| 2080 | cc = above; |
| 2081 | break; |
| 2082 | case kOverflow: |
| 2083 | cc = overflow; |
| 2084 | break; |
| 2085 | case kNotOverflow: |
| 2086 | cc = no_overflow; |
| 2087 | break; |
| 2088 | default: |
| 2089 | UNREACHABLE(); |
| 2090 | break; |
| 2091 | } |
| 2092 | __ bind(&check); |
| 2093 | if (reg.is_byte_register()) { |
| 2094 | // setcc for byte registers (al, bl, cl, dl). |
| 2095 | __ setcc(cc, reg); |
| 2096 | __ movzx_b(reg, reg); |
| 2097 | } else { |
| 2098 | // Emit a branch to set a register to either 1 or 0. |
| 2099 | Label set; |
| 2100 | __ j(cc, &set, Label::kNear); |
| 2101 | __ Move(reg, Immediate(0)); |
| 2102 | __ jmp(&done, Label::kNear); |
| 2103 | __ bind(&set); |
| 2104 | __ mov(reg, Immediate(1)); |
| 2105 | } |
| 2106 | __ bind(&done); |
| 2107 | } |
| 2108 | |
| 2109 | |
| 2110 | void CodeGenerator::AssembleArchLookupSwitch(Instruction* instr) { |
| 2111 | X87OperandConverter i(this, instr); |
| 2112 | Register input = i.InputRegister(0); |
| 2113 | for (size_t index = 2; index < instr->InputCount(); index += 2) { |
| 2114 | __ cmp(input, Immediate(i.InputInt32(index + 0))); |
| 2115 | __ j(equal, GetLabel(i.InputRpo(index + 1))); |
| 2116 | } |
| 2117 | AssembleArchJump(i.InputRpo(1)); |
| 2118 | } |
| 2119 | |
| 2120 | |
| 2121 | void CodeGenerator::AssembleArchTableSwitch(Instruction* instr) { |
| 2122 | X87OperandConverter i(this, instr); |
| 2123 | Register input = i.InputRegister(0); |
| 2124 | size_t const case_count = instr->InputCount() - 2; |
| 2125 | Label** cases = zone()->NewArray<Label*>(case_count); |
| 2126 | for (size_t index = 0; index < case_count; ++index) { |
| 2127 | cases[index] = GetLabel(i.InputRpo(index + 2)); |
| 2128 | } |
| 2129 | Label* const table = AddJumpTable(cases, case_count); |
| 2130 | __ cmp(input, Immediate(case_count)); |
| 2131 | __ j(above_equal, GetLabel(i.InputRpo(1))); |
| 2132 | __ jmp(Operand::JumpTable(input, times_4, table)); |
| 2133 | } |
| 2134 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2135 | CodeGenerator::CodeGenResult CodeGenerator::AssembleDeoptimizerCall( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2136 | int deoptimization_id, Deoptimizer::BailoutType bailout_type) { |
| 2137 | Address deopt_entry = Deoptimizer::GetDeoptimizationEntry( |
| 2138 | isolate(), deoptimization_id, bailout_type); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2139 | if (deopt_entry == nullptr) return kTooManyDeoptimizationBailouts; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2140 | __ call(deopt_entry, RelocInfo::RUNTIME_ENTRY); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2141 | return kSuccess; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2142 | } |
| 2143 | |
| 2144 | |
| 2145 | // The calling convention for JSFunctions on X87 passes arguments on the |
| 2146 | // stack and the JSFunction and context in EDI and ESI, respectively, thus |
| 2147 | // the steps of the call look as follows: |
| 2148 | |
| 2149 | // --{ before the call instruction }-------------------------------------------- |
| 2150 | // | caller frame | |
| 2151 | // ^ esp ^ ebp |
| 2152 | |
| 2153 | // --{ push arguments and setup ESI, EDI }-------------------------------------- |
| 2154 | // | args + receiver | caller frame | |
| 2155 | // ^ esp ^ ebp |
| 2156 | // [edi = JSFunction, esi = context] |
| 2157 | |
| 2158 | // --{ call [edi + kCodeEntryOffset] }------------------------------------------ |
| 2159 | // | RET | args + receiver | caller frame | |
| 2160 | // ^ esp ^ ebp |
| 2161 | |
| 2162 | // =={ prologue of called function }============================================ |
| 2163 | // --{ push ebp }--------------------------------------------------------------- |
| 2164 | // | FP | RET | args + receiver | caller frame | |
| 2165 | // ^ esp ^ ebp |
| 2166 | |
| 2167 | // --{ mov ebp, esp }----------------------------------------------------------- |
| 2168 | // | FP | RET | args + receiver | caller frame | |
| 2169 | // ^ ebp,esp |
| 2170 | |
| 2171 | // --{ push esi }--------------------------------------------------------------- |
| 2172 | // | CTX | FP | RET | args + receiver | caller frame | |
| 2173 | // ^esp ^ ebp |
| 2174 | |
| 2175 | // --{ push edi }--------------------------------------------------------------- |
| 2176 | // | FNC | CTX | FP | RET | args + receiver | caller frame | |
| 2177 | // ^esp ^ ebp |
| 2178 | |
| 2179 | // --{ subi esp, #N }----------------------------------------------------------- |
| 2180 | // | callee frame | FNC | CTX | FP | RET | args + receiver | caller frame | |
| 2181 | // ^esp ^ ebp |
| 2182 | |
| 2183 | // =={ body of called function }================================================ |
| 2184 | |
| 2185 | // =={ epilogue of called function }============================================ |
| 2186 | // --{ mov esp, ebp }----------------------------------------------------------- |
| 2187 | // | FP | RET | args + receiver | caller frame | |
| 2188 | // ^ esp,ebp |
| 2189 | |
| 2190 | // --{ pop ebp }----------------------------------------------------------- |
| 2191 | // | | RET | args + receiver | caller frame | |
| 2192 | // ^ esp ^ ebp |
| 2193 | |
| 2194 | // --{ ret #A+1 }----------------------------------------------------------- |
| 2195 | // | | caller frame | |
| 2196 | // ^ esp ^ ebp |
| 2197 | |
| 2198 | |
| 2199 | // Runtime function calls are accomplished by doing a stub call to the |
| 2200 | // CEntryStub (a real code object). On X87 passes arguments on the |
| 2201 | // stack, the number of arguments in EAX, the address of the runtime function |
| 2202 | // in EBX, and the context in ESI. |
| 2203 | |
| 2204 | // --{ before the call instruction }-------------------------------------------- |
| 2205 | // | caller frame | |
| 2206 | // ^ esp ^ ebp |
| 2207 | |
| 2208 | // --{ push arguments and setup EAX, EBX, and ESI }----------------------------- |
| 2209 | // | args + receiver | caller frame | |
| 2210 | // ^ esp ^ ebp |
| 2211 | // [eax = #args, ebx = runtime function, esi = context] |
| 2212 | |
| 2213 | // --{ call #CEntryStub }------------------------------------------------------- |
| 2214 | // | RET | args + receiver | caller frame | |
| 2215 | // ^ esp ^ ebp |
| 2216 | |
| 2217 | // =={ body of runtime function }=============================================== |
| 2218 | |
| 2219 | // --{ runtime returns }-------------------------------------------------------- |
| 2220 | // | caller frame | |
| 2221 | // ^ esp ^ ebp |
| 2222 | |
| 2223 | // Other custom linkages (e.g. for calling directly into and out of C++) may |
| 2224 | // need to save callee-saved registers on the stack, which is done in the |
| 2225 | // function prologue of generated code. |
| 2226 | |
| 2227 | // --{ before the call instruction }-------------------------------------------- |
| 2228 | // | caller frame | |
| 2229 | // ^ esp ^ ebp |
| 2230 | |
| 2231 | // --{ set up arguments in registers on stack }--------------------------------- |
| 2232 | // | args | caller frame | |
| 2233 | // ^ esp ^ ebp |
| 2234 | // [r0 = arg0, r1 = arg1, ...] |
| 2235 | |
| 2236 | // --{ call code }-------------------------------------------------------------- |
| 2237 | // | RET | args | caller frame | |
| 2238 | // ^ esp ^ ebp |
| 2239 | |
| 2240 | // =={ prologue of called function }============================================ |
| 2241 | // --{ push ebp }--------------------------------------------------------------- |
| 2242 | // | FP | RET | args | caller frame | |
| 2243 | // ^ esp ^ ebp |
| 2244 | |
| 2245 | // --{ mov ebp, esp }----------------------------------------------------------- |
| 2246 | // | FP | RET | args | caller frame | |
| 2247 | // ^ ebp,esp |
| 2248 | |
| 2249 | // --{ save registers }--------------------------------------------------------- |
| 2250 | // | regs | FP | RET | args | caller frame | |
| 2251 | // ^ esp ^ ebp |
| 2252 | |
| 2253 | // --{ subi esp, #N }----------------------------------------------------------- |
| 2254 | // | callee frame | regs | FP | RET | args | caller frame | |
| 2255 | // ^esp ^ ebp |
| 2256 | |
| 2257 | // =={ body of called function }================================================ |
| 2258 | |
| 2259 | // =={ epilogue of called function }============================================ |
| 2260 | // --{ restore registers }------------------------------------------------------ |
| 2261 | // | regs | FP | RET | args | caller frame | |
| 2262 | // ^ esp ^ ebp |
| 2263 | |
| 2264 | // --{ mov esp, ebp }----------------------------------------------------------- |
| 2265 | // | FP | RET | args | caller frame | |
| 2266 | // ^ esp,ebp |
| 2267 | |
| 2268 | // --{ pop ebp }---------------------------------------------------------------- |
| 2269 | // | RET | args | caller frame | |
| 2270 | // ^ esp ^ ebp |
| 2271 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2272 | void CodeGenerator::FinishFrame(Frame* frame) { |
| 2273 | CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
| 2274 | const RegList saves = descriptor->CalleeSavedRegisters(); |
| 2275 | if (saves != 0) { // Save callee-saved registers. |
| 2276 | DCHECK(!info()->is_osr()); |
| 2277 | int pushed = 0; |
| 2278 | for (int i = Register::kNumRegisters - 1; i >= 0; i--) { |
| 2279 | if (!((1 << i) & saves)) continue; |
| 2280 | ++pushed; |
| 2281 | } |
| 2282 | frame->AllocateSavedCalleeRegisterSlots(pushed); |
| 2283 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2284 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2285 | // Initailize FPU state. |
| 2286 | __ fninit(); |
| 2287 | __ fld1(); |
| 2288 | } |
| 2289 | |
| 2290 | void CodeGenerator::AssembleConstructFrame() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2291 | CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2292 | if (frame_access_state()->has_frame()) { |
| 2293 | if (descriptor->IsCFunctionCall()) { |
| 2294 | __ push(ebp); |
| 2295 | __ mov(ebp, esp); |
| 2296 | } else if (descriptor->IsJSFunctionCall()) { |
| 2297 | __ Prologue(this->info()->GeneratePreagedPrologue()); |
| 2298 | } else { |
| 2299 | __ StubPrologue(info()->GetOutputStackFrameType()); |
| 2300 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2301 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2302 | |
| 2303 | int shrink_slots = frame()->GetSpillSlotCount(); |
| 2304 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2305 | if (info()->is_osr()) { |
| 2306 | // TurboFan OSR-compiled functions cannot be entered directly. |
| 2307 | __ Abort(kShouldNotDirectlyEnterOsrFunction); |
| 2308 | |
| 2309 | // Unoptimized code jumps directly to this entrypoint while the unoptimized |
| 2310 | // frame is still on the stack. Optimized code uses OSR values directly from |
| 2311 | // the unoptimized frame. Thus, all that needs to be done is to allocate the |
| 2312 | // remaining stack slots. |
| 2313 | if (FLAG_code_comments) __ RecordComment("-- OSR entrypoint --"); |
| 2314 | osr_pc_offset_ = __ pc_offset(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2315 | shrink_slots -= OsrHelper(info()).UnoptimizedFrameSlots(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2316 | |
| 2317 | // Initailize FPU state. |
| 2318 | __ fninit(); |
| 2319 | __ fld1(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2320 | } |
| 2321 | |
| 2322 | const RegList saves = descriptor->CalleeSavedRegisters(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2323 | if (shrink_slots > 0) { |
| 2324 | __ sub(esp, Immediate(shrink_slots * kPointerSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2325 | } |
| 2326 | |
| 2327 | if (saves != 0) { // Save callee-saved registers. |
| 2328 | DCHECK(!info()->is_osr()); |
| 2329 | int pushed = 0; |
| 2330 | for (int i = Register::kNumRegisters - 1; i >= 0; i--) { |
| 2331 | if (!((1 << i) & saves)) continue; |
| 2332 | __ push(Register::from_code(i)); |
| 2333 | ++pushed; |
| 2334 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2335 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2336 | } |
| 2337 | |
| 2338 | |
| 2339 | void CodeGenerator::AssembleReturn() { |
| 2340 | CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
| 2341 | |
| 2342 | // Clear the FPU stack only if there is no return value in the stack. |
| 2343 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
| 2344 | __ VerifyX87StackDepth(1); |
| 2345 | } |
| 2346 | bool clear_stack = true; |
| 2347 | for (int i = 0; i < descriptor->ReturnCount(); i++) { |
| 2348 | MachineRepresentation rep = descriptor->GetReturnType(i).representation(); |
| 2349 | LinkageLocation loc = descriptor->GetReturnLocation(i); |
| 2350 | if (IsFloatingPoint(rep) && loc == LinkageLocation::ForRegister(0)) { |
| 2351 | clear_stack = false; |
| 2352 | break; |
| 2353 | } |
| 2354 | } |
| 2355 | if (clear_stack) __ fstp(0); |
| 2356 | |
| 2357 | int pop_count = static_cast<int>(descriptor->StackParameterCount()); |
| 2358 | const RegList saves = descriptor->CalleeSavedRegisters(); |
| 2359 | // Restore registers. |
| 2360 | if (saves != 0) { |
| 2361 | for (int i = 0; i < Register::kNumRegisters; i++) { |
| 2362 | if (!((1 << i) & saves)) continue; |
| 2363 | __ pop(Register::from_code(i)); |
| 2364 | } |
| 2365 | } |
| 2366 | |
| 2367 | if (descriptor->IsCFunctionCall()) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2368 | AssembleDeconstructFrame(); |
| 2369 | } else if (frame_access_state()->has_frame()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2370 | // Canonicalize JSFunction return sites for now. |
| 2371 | if (return_label_.is_bound()) { |
| 2372 | __ jmp(&return_label_); |
| 2373 | return; |
| 2374 | } else { |
| 2375 | __ bind(&return_label_); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2376 | AssembleDeconstructFrame(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2377 | } |
| 2378 | } |
| 2379 | if (pop_count == 0) { |
| 2380 | __ ret(0); |
| 2381 | } else { |
| 2382 | __ Ret(pop_count * kPointerSize, ebx); |
| 2383 | } |
| 2384 | } |
| 2385 | |
| 2386 | |
| 2387 | void CodeGenerator::AssembleMove(InstructionOperand* source, |
| 2388 | InstructionOperand* destination) { |
| 2389 | X87OperandConverter g(this, nullptr); |
| 2390 | // Dispatch on the source and destination operand kinds. Not all |
| 2391 | // combinations are possible. |
| 2392 | if (source->IsRegister()) { |
| 2393 | DCHECK(destination->IsRegister() || destination->IsStackSlot()); |
| 2394 | Register src = g.ToRegister(source); |
| 2395 | Operand dst = g.ToOperand(destination); |
| 2396 | __ mov(dst, src); |
| 2397 | } else if (source->IsStackSlot()) { |
| 2398 | DCHECK(destination->IsRegister() || destination->IsStackSlot()); |
| 2399 | Operand src = g.ToOperand(source); |
| 2400 | if (destination->IsRegister()) { |
| 2401 | Register dst = g.ToRegister(destination); |
| 2402 | __ mov(dst, src); |
| 2403 | } else { |
| 2404 | Operand dst = g.ToOperand(destination); |
| 2405 | __ push(src); |
| 2406 | __ pop(dst); |
| 2407 | } |
| 2408 | } else if (source->IsConstant()) { |
| 2409 | Constant src_constant = g.ToConstant(source); |
| 2410 | if (src_constant.type() == Constant::kHeapObject) { |
| 2411 | Handle<HeapObject> src = src_constant.ToHeapObject(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2412 | int slot; |
| 2413 | if (IsMaterializableFromFrame(src, &slot)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2414 | if (destination->IsRegister()) { |
| 2415 | Register dst = g.ToRegister(destination); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2416 | __ mov(dst, g.SlotToOperand(slot)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2417 | } else { |
| 2418 | DCHECK(destination->IsStackSlot()); |
| 2419 | Operand dst = g.ToOperand(destination); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2420 | __ push(g.SlotToOperand(slot)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2421 | __ pop(dst); |
| 2422 | } |
| 2423 | } else if (destination->IsRegister()) { |
| 2424 | Register dst = g.ToRegister(destination); |
| 2425 | __ LoadHeapObject(dst, src); |
| 2426 | } else { |
| 2427 | DCHECK(destination->IsStackSlot()); |
| 2428 | Operand dst = g.ToOperand(destination); |
| 2429 | AllowDeferredHandleDereference embedding_raw_address; |
| 2430 | if (isolate()->heap()->InNewSpace(*src)) { |
| 2431 | __ PushHeapObject(src); |
| 2432 | __ pop(dst); |
| 2433 | } else { |
| 2434 | __ mov(dst, src); |
| 2435 | } |
| 2436 | } |
| 2437 | } else if (destination->IsRegister()) { |
| 2438 | Register dst = g.ToRegister(destination); |
| 2439 | __ Move(dst, g.ToImmediate(source)); |
| 2440 | } else if (destination->IsStackSlot()) { |
| 2441 | Operand dst = g.ToOperand(destination); |
| 2442 | __ Move(dst, g.ToImmediate(source)); |
| 2443 | } else if (src_constant.type() == Constant::kFloat32) { |
| 2444 | // TODO(turbofan): Can we do better here? |
| 2445 | uint32_t src = bit_cast<uint32_t>(src_constant.ToFloat32()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2446 | if (destination->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2447 | __ sub(esp, Immediate(kInt32Size)); |
| 2448 | __ mov(MemOperand(esp, 0), Immediate(src)); |
| 2449 | // always only push one value into the x87 stack. |
| 2450 | __ fstp(0); |
| 2451 | __ fld_s(MemOperand(esp, 0)); |
| 2452 | __ add(esp, Immediate(kInt32Size)); |
| 2453 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2454 | DCHECK(destination->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2455 | Operand dst = g.ToOperand(destination); |
| 2456 | __ Move(dst, Immediate(src)); |
| 2457 | } |
| 2458 | } else { |
| 2459 | DCHECK_EQ(Constant::kFloat64, src_constant.type()); |
| 2460 | uint64_t src = bit_cast<uint64_t>(src_constant.ToFloat64()); |
| 2461 | uint32_t lower = static_cast<uint32_t>(src); |
| 2462 | uint32_t upper = static_cast<uint32_t>(src >> 32); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2463 | if (destination->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2464 | __ sub(esp, Immediate(kDoubleSize)); |
| 2465 | __ mov(MemOperand(esp, 0), Immediate(lower)); |
| 2466 | __ mov(MemOperand(esp, kInt32Size), Immediate(upper)); |
| 2467 | // always only push one value into the x87 stack. |
| 2468 | __ fstp(0); |
| 2469 | __ fld_d(MemOperand(esp, 0)); |
| 2470 | __ add(esp, Immediate(kDoubleSize)); |
| 2471 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2472 | DCHECK(destination->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2473 | Operand dst0 = g.ToOperand(destination); |
| 2474 | Operand dst1 = g.HighOperand(destination); |
| 2475 | __ Move(dst0, Immediate(lower)); |
| 2476 | __ Move(dst1, Immediate(upper)); |
| 2477 | } |
| 2478 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2479 | } else if (source->IsFPRegister()) { |
| 2480 | DCHECK(destination->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2481 | Operand dst = g.ToOperand(destination); |
| 2482 | auto allocated = AllocatedOperand::cast(*source); |
| 2483 | switch (allocated.representation()) { |
| 2484 | case MachineRepresentation::kFloat32: |
| 2485 | __ fst_s(dst); |
| 2486 | break; |
| 2487 | case MachineRepresentation::kFloat64: |
| 2488 | __ fst_d(dst); |
| 2489 | break; |
| 2490 | default: |
| 2491 | UNREACHABLE(); |
| 2492 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2493 | } else if (source->IsFPStackSlot()) { |
| 2494 | DCHECK(destination->IsFPRegister() || destination->IsFPStackSlot()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2495 | Operand src = g.ToOperand(source); |
| 2496 | auto allocated = AllocatedOperand::cast(*source); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2497 | if (destination->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2498 | // always only push one value into the x87 stack. |
| 2499 | __ fstp(0); |
| 2500 | switch (allocated.representation()) { |
| 2501 | case MachineRepresentation::kFloat32: |
| 2502 | __ fld_s(src); |
| 2503 | break; |
| 2504 | case MachineRepresentation::kFloat64: |
| 2505 | __ fld_d(src); |
| 2506 | break; |
| 2507 | default: |
| 2508 | UNREACHABLE(); |
| 2509 | } |
| 2510 | } else { |
| 2511 | Operand dst = g.ToOperand(destination); |
| 2512 | switch (allocated.representation()) { |
| 2513 | case MachineRepresentation::kFloat32: |
| 2514 | __ fld_s(src); |
| 2515 | __ fstp_s(dst); |
| 2516 | break; |
| 2517 | case MachineRepresentation::kFloat64: |
| 2518 | __ fld_d(src); |
| 2519 | __ fstp_d(dst); |
| 2520 | break; |
| 2521 | default: |
| 2522 | UNREACHABLE(); |
| 2523 | } |
| 2524 | } |
| 2525 | } else { |
| 2526 | UNREACHABLE(); |
| 2527 | } |
| 2528 | } |
| 2529 | |
| 2530 | |
| 2531 | void CodeGenerator::AssembleSwap(InstructionOperand* source, |
| 2532 | InstructionOperand* destination) { |
| 2533 | X87OperandConverter g(this, nullptr); |
| 2534 | // Dispatch on the source and destination operand kinds. Not all |
| 2535 | // combinations are possible. |
| 2536 | if (source->IsRegister() && destination->IsRegister()) { |
| 2537 | // Register-register. |
| 2538 | Register src = g.ToRegister(source); |
| 2539 | Register dst = g.ToRegister(destination); |
| 2540 | __ xchg(dst, src); |
| 2541 | } else if (source->IsRegister() && destination->IsStackSlot()) { |
| 2542 | // Register-memory. |
| 2543 | __ xchg(g.ToRegister(source), g.ToOperand(destination)); |
| 2544 | } else if (source->IsStackSlot() && destination->IsStackSlot()) { |
| 2545 | // Memory-memory. |
| 2546 | Operand dst1 = g.ToOperand(destination); |
| 2547 | __ push(dst1); |
| 2548 | frame_access_state()->IncreaseSPDelta(1); |
| 2549 | Operand src1 = g.ToOperand(source); |
| 2550 | __ push(src1); |
| 2551 | Operand dst2 = g.ToOperand(destination); |
| 2552 | __ pop(dst2); |
| 2553 | frame_access_state()->IncreaseSPDelta(-1); |
| 2554 | Operand src2 = g.ToOperand(source); |
| 2555 | __ pop(src2); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2556 | } else if (source->IsFPRegister() && destination->IsFPRegister()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2557 | UNREACHABLE(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2558 | } else if (source->IsFPRegister() && destination->IsFPStackSlot()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2559 | auto allocated = AllocatedOperand::cast(*source); |
| 2560 | switch (allocated.representation()) { |
| 2561 | case MachineRepresentation::kFloat32: |
| 2562 | __ fld_s(g.ToOperand(destination)); |
| 2563 | __ fxch(); |
| 2564 | __ fstp_s(g.ToOperand(destination)); |
| 2565 | break; |
| 2566 | case MachineRepresentation::kFloat64: |
| 2567 | __ fld_d(g.ToOperand(destination)); |
| 2568 | __ fxch(); |
| 2569 | __ fstp_d(g.ToOperand(destination)); |
| 2570 | break; |
| 2571 | default: |
| 2572 | UNREACHABLE(); |
| 2573 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2574 | } else if (source->IsFPStackSlot() && destination->IsFPStackSlot()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2575 | auto allocated = AllocatedOperand::cast(*source); |
| 2576 | switch (allocated.representation()) { |
| 2577 | case MachineRepresentation::kFloat32: |
| 2578 | __ fld_s(g.ToOperand(source)); |
| 2579 | __ fld_s(g.ToOperand(destination)); |
| 2580 | __ fstp_s(g.ToOperand(source)); |
| 2581 | __ fstp_s(g.ToOperand(destination)); |
| 2582 | break; |
| 2583 | case MachineRepresentation::kFloat64: |
| 2584 | __ fld_d(g.ToOperand(source)); |
| 2585 | __ fld_d(g.ToOperand(destination)); |
| 2586 | __ fstp_d(g.ToOperand(source)); |
| 2587 | __ fstp_d(g.ToOperand(destination)); |
| 2588 | break; |
| 2589 | default: |
| 2590 | UNREACHABLE(); |
| 2591 | } |
| 2592 | } else { |
| 2593 | // No other combinations are possible. |
| 2594 | UNREACHABLE(); |
| 2595 | } |
| 2596 | } |
| 2597 | |
| 2598 | |
| 2599 | void CodeGenerator::AssembleJumpTable(Label** targets, size_t target_count) { |
| 2600 | for (size_t index = 0; index < target_count; ++index) { |
| 2601 | __ dd(targets[index]); |
| 2602 | } |
| 2603 | } |
| 2604 | |
| 2605 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2606 | void CodeGenerator::EnsureSpaceForLazyDeopt() { |
| 2607 | if (!info()->ShouldEnsureSpaceForLazyDeopt()) { |
| 2608 | return; |
| 2609 | } |
| 2610 | |
| 2611 | int space_needed = Deoptimizer::patch_size(); |
| 2612 | // Ensure that we have enough space after the previous lazy-bailout |
| 2613 | // instruction for patching the code here. |
| 2614 | int current_pc = masm()->pc_offset(); |
| 2615 | if (current_pc < last_lazy_deopt_pc_ + space_needed) { |
| 2616 | int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; |
| 2617 | __ Nop(padding_size); |
| 2618 | } |
| 2619 | } |
| 2620 | |
| 2621 | #undef __ |
| 2622 | |
| 2623 | } // namespace compiler |
| 2624 | } // namespace internal |
| 2625 | } // namespace v8 |