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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 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 #include "src/base/bits.h" | 5 #include "src/base/bits.h" |
6 #include "src/compiler/instruction-selector-impl.h" | 6 #include "src/compiler/instruction-selector-impl.h" |
7 #include "src/compiler/node-matchers.h" | 7 #include "src/compiler/node-matchers.h" |
8 | 8 |
9 namespace v8 { | 9 namespace v8 { |
10 namespace internal { | 10 namespace internal { |
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98 outputs[output_count++] = g.DefineAsRegister(node); | 98 outputs[output_count++] = g.DefineAsRegister(node); |
99 if (cont->IsSet()) { | 99 if (cont->IsSet()) { |
100 outputs[output_count++] = g.DefineAsRegister(cont->result()); | 100 outputs[output_count++] = g.DefineAsRegister(cont->result()); |
101 } | 101 } |
102 | 102 |
103 DCHECK_NE(0, input_count); | 103 DCHECK_NE(0, input_count); |
104 DCHECK_NE(0, output_count); | 104 DCHECK_NE(0, output_count); |
105 DCHECK_GE(arraysize(inputs), input_count); | 105 DCHECK_GE(arraysize(inputs), input_count); |
106 DCHECK_GE(arraysize(outputs), output_count); | 106 DCHECK_GE(arraysize(outputs), output_count); |
107 | 107 |
108 selector->Emit(cont->Encode(opcode), output_count, outputs, input_count, | 108 Instruction* instr = selector->Emit(cont->Encode(opcode), output_count, |
109 inputs); | 109 outputs, input_count, inputs); |
| 110 if (cont->IsBranch()) instr->MarkAsControl(); |
110 } | 111 } |
111 | 112 |
112 | 113 |
113 static void VisitBinop(InstructionSelector* selector, Node* node, | 114 static void VisitBinop(InstructionSelector* selector, Node* node, |
114 InstructionCode opcode) { | 115 InstructionCode opcode) { |
115 FlagsContinuation cont; | 116 FlagsContinuation cont; |
116 VisitBinop(selector, node, opcode, &cont); | 117 VisitBinop(selector, node, opcode, &cont); |
117 } | 118 } |
118 | 119 |
119 | 120 |
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578 namespace { | 579 namespace { |
579 | 580 |
580 // Shared routine for multiple compare operations. | 581 // Shared routine for multiple compare operations. |
581 static void VisitCompare(InstructionSelector* selector, InstructionCode opcode, | 582 static void VisitCompare(InstructionSelector* selector, InstructionCode opcode, |
582 InstructionOperand* left, InstructionOperand* right, | 583 InstructionOperand* left, InstructionOperand* right, |
583 FlagsContinuation* cont) { | 584 FlagsContinuation* cont) { |
584 MipsOperandGenerator g(selector); | 585 MipsOperandGenerator g(selector); |
585 opcode = cont->Encode(opcode); | 586 opcode = cont->Encode(opcode); |
586 if (cont->IsBranch()) { | 587 if (cont->IsBranch()) { |
587 selector->Emit(opcode, NULL, left, right, g.Label(cont->true_block()), | 588 selector->Emit(opcode, NULL, left, right, g.Label(cont->true_block()), |
588 g.Label(cont->false_block())); | 589 g.Label(cont->false_block()))->MarkAsControl(); |
589 } else { | 590 } else { |
590 DCHECK(cont->IsSet()); | 591 DCHECK(cont->IsSet()); |
591 // TODO(plind): Revisit and test this path. | 592 // TODO(plind): Revisit and test this path. |
592 selector->Emit(opcode, g.DefineAsRegister(cont->result()), left, right); | 593 selector->Emit(opcode, g.DefineAsRegister(cont->result()), left, right); |
593 } | 594 } |
594 } | 595 } |
595 | 596 |
596 | 597 |
597 // Shared routine for multiple float compare operations. | 598 // Shared routine for multiple float compare operations. |
598 void VisitFloat64Compare(InstructionSelector* selector, Node* node, | 599 void VisitFloat64Compare(InstructionSelector* selector, Node* node, |
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707 } | 708 } |
708 break; | 709 break; |
709 } | 710 } |
710 | 711 |
711 // Continuation could not be combined with a compare, emit compare against 0. | 712 // Continuation could not be combined with a compare, emit compare against 0. |
712 MipsOperandGenerator g(selector); | 713 MipsOperandGenerator g(selector); |
713 InstructionCode const opcode = cont->Encode(kMipsCmp); | 714 InstructionCode const opcode = cont->Encode(kMipsCmp); |
714 InstructionOperand* const value_operand = g.UseRegister(value); | 715 InstructionOperand* const value_operand = g.UseRegister(value); |
715 if (cont->IsBranch()) { | 716 if (cont->IsBranch()) { |
716 selector->Emit(opcode, nullptr, value_operand, g.TempImmediate(0), | 717 selector->Emit(opcode, nullptr, value_operand, g.TempImmediate(0), |
717 g.Label(cont->true_block()), g.Label(cont->false_block())); | 718 g.Label(cont->true_block()), |
| 719 g.Label(cont->false_block()))->MarkAsControl(); |
718 } else { | 720 } else { |
719 selector->Emit(opcode, g.DefineAsRegister(cont->result()), value_operand, | 721 selector->Emit(opcode, g.DefineAsRegister(cont->result()), value_operand, |
720 g.TempImmediate(0)); | 722 g.TempImmediate(0)); |
721 } | 723 } |
722 } | 724 } |
723 | 725 |
724 | 726 |
725 void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch, | 727 void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch, |
726 BasicBlock* fbranch) { | 728 BasicBlock* fbranch) { |
727 FlagsContinuation cont(kNotEqual, tbranch, fbranch); | 729 FlagsContinuation cont(kNotEqual, tbranch, fbranch); |
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803 | 805 |
804 // static | 806 // static |
805 MachineOperatorBuilder::Flags | 807 MachineOperatorBuilder::Flags |
806 InstructionSelector::SupportedMachineOperatorFlags() { | 808 InstructionSelector::SupportedMachineOperatorFlags() { |
807 return MachineOperatorBuilder::kNoFlags; | 809 return MachineOperatorBuilder::kNoFlags; |
808 } | 810 } |
809 | 811 |
810 } // namespace compiler | 812 } // namespace compiler |
811 } // namespace internal | 813 } // namespace internal |
812 } // namespace v8 | 814 } // namespace v8 |
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