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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #if V8_TARGET_ARCH_X64 | 5 #if V8_TARGET_ARCH_X64 |
| 6 | 6 |
| 7 #include "src/crankshaft/x64/lithium-codegen-x64.h" | 7 #include "src/crankshaft/x64/lithium-codegen-x64.h" |
| 8 | 8 |
| 9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
| 10 #include "src/code-factory.h" | 10 #include "src/code-factory.h" |
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| 2201 bool is_unsigned = | 2201 bool is_unsigned = |
| 2202 instr->is_double() || | 2202 instr->is_double() || |
| 2203 instr->hydrogen()->left()->CheckFlag(HInstruction::kUint32) || | 2203 instr->hydrogen()->left()->CheckFlag(HInstruction::kUint32) || |
| 2204 instr->hydrogen()->right()->CheckFlag(HInstruction::kUint32); | 2204 instr->hydrogen()->right()->CheckFlag(HInstruction::kUint32); |
| 2205 Condition cc = TokenToCondition(instr->op(), is_unsigned); | 2205 Condition cc = TokenToCondition(instr->op(), is_unsigned); |
| 2206 | 2206 |
| 2207 if (left->IsConstantOperand() && right->IsConstantOperand()) { | 2207 if (left->IsConstantOperand() && right->IsConstantOperand()) { |
| 2208 // We can statically evaluate the comparison. | 2208 // We can statically evaluate the comparison. |
| 2209 double left_val = ToDouble(LConstantOperand::cast(left)); | 2209 double left_val = ToDouble(LConstantOperand::cast(left)); |
| 2210 double right_val = ToDouble(LConstantOperand::cast(right)); | 2210 double right_val = ToDouble(LConstantOperand::cast(right)); |
| 2211 int next_block = EvalComparison(instr->op(), left_val, right_val) ? | 2211 int next_block = Token::EvalComparison(instr->op(), left_val, right_val) |
| 2212 instr->TrueDestination(chunk_) : instr->FalseDestination(chunk_); | 2212 ? instr->TrueDestination(chunk_) |
| 2213 : instr->FalseDestination(chunk_); |
| 2213 EmitGoto(next_block); | 2214 EmitGoto(next_block); |
| 2214 } else { | 2215 } else { |
| 2215 if (instr->is_double()) { | 2216 if (instr->is_double()) { |
| 2216 // Don't base result on EFLAGS when a NaN is involved. Instead | 2217 // Don't base result on EFLAGS when a NaN is involved. Instead |
| 2217 // jump to the false block. | 2218 // jump to the false block. |
| 2218 __ Ucomisd(ToDoubleRegister(left), ToDoubleRegister(right)); | 2219 __ Ucomisd(ToDoubleRegister(left), ToDoubleRegister(right)); |
| 2219 __ j(parity_even, instr->FalseLabel(chunk_)); | 2220 __ j(parity_even, instr->FalseLabel(chunk_)); |
| 2220 } else { | 2221 } else { |
| 2221 int32_t value; | 2222 int32_t value; |
| 2222 if (right->IsConstantOperand()) { | 2223 if (right->IsConstantOperand()) { |
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| 5661 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5662 RecordSafepoint(Safepoint::kNoLazyDeopt); |
| 5662 } | 5663 } |
| 5663 | 5664 |
| 5664 | 5665 |
| 5665 #undef __ | 5666 #undef __ |
| 5666 | 5667 |
| 5667 } // namespace internal | 5668 } // namespace internal |
| 5668 } // namespace v8 | 5669 } // namespace v8 |
| 5669 | 5670 |
| 5670 #endif // V8_TARGET_ARCH_X64 | 5671 #endif // V8_TARGET_ARCH_X64 |
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