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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 Instruction* instr = selector->Emit(cont->Encode(opcode), output_count, | 108 selector->Emit(cont->Encode(opcode), output_count, outputs, input_count, |
109 outputs, input_count, inputs); | 109 inputs); |
110 if (cont->IsBranch()) instr->MarkAsControl(); | |
111 } | 110 } |
112 | 111 |
113 | 112 |
114 static void VisitBinop(InstructionSelector* selector, Node* node, | 113 static void VisitBinop(InstructionSelector* selector, Node* node, |
115 InstructionCode opcode) { | 114 InstructionCode opcode) { |
116 FlagsContinuation cont; | 115 FlagsContinuation cont; |
117 VisitBinop(selector, node, opcode, &cont); | 116 VisitBinop(selector, node, opcode, &cont); |
118 } | 117 } |
119 | 118 |
120 | 119 |
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579 namespace { | 578 namespace { |
580 | 579 |
581 // Shared routine for multiple compare operations. | 580 // Shared routine for multiple compare operations. |
582 static void VisitCompare(InstructionSelector* selector, InstructionCode opcode, | 581 static void VisitCompare(InstructionSelector* selector, InstructionCode opcode, |
583 InstructionOperand* left, InstructionOperand* right, | 582 InstructionOperand* left, InstructionOperand* right, |
584 FlagsContinuation* cont) { | 583 FlagsContinuation* cont) { |
585 MipsOperandGenerator g(selector); | 584 MipsOperandGenerator g(selector); |
586 opcode = cont->Encode(opcode); | 585 opcode = cont->Encode(opcode); |
587 if (cont->IsBranch()) { | 586 if (cont->IsBranch()) { |
588 selector->Emit(opcode, NULL, left, right, g.Label(cont->true_block()), | 587 selector->Emit(opcode, NULL, left, right, g.Label(cont->true_block()), |
589 g.Label(cont->false_block()))->MarkAsControl(); | 588 g.Label(cont->false_block())); |
590 } else { | 589 } else { |
591 DCHECK(cont->IsSet()); | 590 DCHECK(cont->IsSet()); |
592 // TODO(plind): Revisit and test this path. | 591 // TODO(plind): Revisit and test this path. |
593 selector->Emit(opcode, g.DefineAsRegister(cont->result()), left, right); | 592 selector->Emit(opcode, g.DefineAsRegister(cont->result()), left, right); |
594 } | 593 } |
595 } | 594 } |
596 | 595 |
597 | 596 |
598 // Shared routine for multiple float compare operations. | 597 // Shared routine for multiple float compare operations. |
599 void VisitFloat64Compare(InstructionSelector* selector, Node* node, | 598 void VisitFloat64Compare(InstructionSelector* selector, Node* node, |
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708 } | 707 } |
709 break; | 708 break; |
710 } | 709 } |
711 | 710 |
712 // Continuation could not be combined with a compare, emit compare against 0. | 711 // Continuation could not be combined with a compare, emit compare against 0. |
713 MipsOperandGenerator g(selector); | 712 MipsOperandGenerator g(selector); |
714 InstructionCode const opcode = cont->Encode(kMipsCmp); | 713 InstructionCode const opcode = cont->Encode(kMipsCmp); |
715 InstructionOperand* const value_operand = g.UseRegister(value); | 714 InstructionOperand* const value_operand = g.UseRegister(value); |
716 if (cont->IsBranch()) { | 715 if (cont->IsBranch()) { |
717 selector->Emit(opcode, nullptr, value_operand, g.TempImmediate(0), | 716 selector->Emit(opcode, nullptr, value_operand, g.TempImmediate(0), |
718 g.Label(cont->true_block()), | 717 g.Label(cont->true_block()), g.Label(cont->false_block())); |
719 g.Label(cont->false_block()))->MarkAsControl(); | |
720 } else { | 718 } else { |
721 selector->Emit(opcode, g.DefineAsRegister(cont->result()), value_operand, | 719 selector->Emit(opcode, g.DefineAsRegister(cont->result()), value_operand, |
722 g.TempImmediate(0)); | 720 g.TempImmediate(0)); |
723 } | 721 } |
724 } | 722 } |
725 | 723 |
726 | 724 |
727 void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch, | 725 void InstructionSelector::VisitBranch(Node* branch, BasicBlock* tbranch, |
728 BasicBlock* fbranch) { | 726 BasicBlock* fbranch) { |
729 FlagsContinuation cont(kNotEqual, tbranch, fbranch); | 727 FlagsContinuation cont(kNotEqual, tbranch, fbranch); |
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805 | 803 |
806 // static | 804 // static |
807 MachineOperatorBuilder::Flags | 805 MachineOperatorBuilder::Flags |
808 InstructionSelector::SupportedMachineOperatorFlags() { | 806 InstructionSelector::SupportedMachineOperatorFlags() { |
809 return MachineOperatorBuilder::kNoFlags; | 807 return MachineOperatorBuilder::kNoFlags; |
810 } | 808 } |
811 | 809 |
812 } // namespace compiler | 810 } // namespace compiler |
813 } // namespace internal | 811 } // namespace internal |
814 } // namespace v8 | 812 } // namespace v8 |
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