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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 #ifndef V8_CRANKSHAFT_ARM64_LITHIUM_GAP_RESOLVER_ARM64_H_ | 5 #ifndef V8_CRANKSHAFT_ARM64_LITHIUM_GAP_RESOLVER_ARM64_H_ |
6 #define V8_CRANKSHAFT_ARM64_LITHIUM_GAP_RESOLVER_ARM64_H_ | 6 #define V8_CRANKSHAFT_ARM64_LITHIUM_GAP_RESOLVER_ARM64_H_ |
7 | 7 |
8 #include "src/crankshaft/arm64/delayed-masm-arm64.h" | 8 #include "src/crankshaft/arm64/delayed-masm-arm64.h" |
9 #include "src/crankshaft/lithium.h" | 9 #include "src/crankshaft/lithium.h" |
10 | 10 |
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59 // Emit a move from one stack slot to another. | 59 // Emit a move from one stack slot to another. |
60 void EmitStackSlotMove(int index) { | 60 void EmitStackSlotMove(int index) { |
61 masm_.StackSlotMove(moves_[index].source(), moves_[index].destination()); | 61 masm_.StackSlotMove(moves_[index].source(), moves_[index].destination()); |
62 } | 62 } |
63 | 63 |
64 // Verify the move list before performing moves. | 64 // Verify the move list before performing moves. |
65 void Verify(); | 65 void Verify(); |
66 | 66 |
67 // Registers used to solve cycles. | 67 // Registers used to solve cycles. |
68 const Register& SavedValueRegister() { | 68 const Register& SavedValueRegister() { |
69 DCHECK(!masm_.ScratchRegister().IsAllocatable()); | 69 DCHECK(!RegisterConfiguration::Crankshaft()->IsAllocatableGeneralCode( |
| 70 masm_.ScratchRegister().code())); |
70 return masm_.ScratchRegister(); | 71 return masm_.ScratchRegister(); |
71 } | 72 } |
72 // The scratch register is used to break cycles and to store constant. | 73 // The scratch register is used to break cycles and to store constant. |
73 // These two methods switch from one mode to the other. | 74 // These two methods switch from one mode to the other. |
74 void AcquireSavedValueRegister() { masm_.AcquireScratchRegister(); } | 75 void AcquireSavedValueRegister() { masm_.AcquireScratchRegister(); } |
75 void ReleaseSavedValueRegister() { masm_.ReleaseScratchRegister(); } | 76 void ReleaseSavedValueRegister() { masm_.ReleaseScratchRegister(); } |
76 const FPRegister& SavedFPValueRegister() { | 77 const FPRegister& SavedFPValueRegister() { |
77 // We use the Crankshaft floating-point scratch register to break a cycle | 78 // We use the Crankshaft floating-point scratch register to break a cycle |
78 // involving double values as the MacroAssembler will not need it for the | 79 // involving double values as the MacroAssembler will not need it for the |
79 // operations performed by the gap resolver. | 80 // operations performed by the gap resolver. |
80 DCHECK(!crankshaft_fp_scratch.IsAllocatable()); | 81 DCHECK(!RegisterConfiguration::Crankshaft()->IsAllocatableGeneralCode( |
| 82 crankshaft_fp_scratch.code())); |
81 return crankshaft_fp_scratch; | 83 return crankshaft_fp_scratch; |
82 } | 84 } |
83 | 85 |
84 LCodeGen* cgen_; | 86 LCodeGen* cgen_; |
85 DelayedGapMasm masm_; | 87 DelayedGapMasm masm_; |
86 | 88 |
87 // List of moves not yet resolved. | 89 // List of moves not yet resolved. |
88 ZoneList<LMoveOperands> moves_; | 90 ZoneList<LMoveOperands> moves_; |
89 | 91 |
90 int root_index_; | 92 int root_index_; |
91 bool in_cycle_; | 93 bool in_cycle_; |
92 LOperand* saved_destination_; | 94 LOperand* saved_destination_; |
93 }; | 95 }; |
94 | 96 |
95 } // namespace internal | 97 } // namespace internal |
96 } // namespace v8 | 98 } // namespace v8 |
97 | 99 |
98 #endif // V8_CRANKSHAFT_ARM64_LITHIUM_GAP_RESOLVER_ARM64_H_ | 100 #endif // V8_CRANKSHAFT_ARM64_LITHIUM_GAP_RESOLVER_ARM64_H_ |
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