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Issue 1398943003: [turbofan] Change deoptimization register allocator constraints to ANY. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 2 months ago
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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/bit-vector.h" 5 #include "src/bit-vector.h"
6 #include "src/compiler/instruction.h" 6 #include "src/compiler/instruction.h"
7 #include "src/compiler/register-allocator-verifier.h" 7 #include "src/compiler/register-allocator-verifier.h"
8 8
9 namespace v8 { 9 namespace v8 {
10 namespace internal { 10 namespace internal {
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153 CHECK(op->IsUnallocated()); 153 CHECK(op->IsUnallocated());
154 const auto* unallocated = UnallocatedOperand::cast(op); 154 const auto* unallocated = UnallocatedOperand::cast(op);
155 int vreg = unallocated->virtual_register(); 155 int vreg = unallocated->virtual_register();
156 constraint->virtual_register_ = vreg; 156 constraint->virtual_register_ = vreg;
157 if (unallocated->basic_policy() == UnallocatedOperand::FIXED_SLOT) { 157 if (unallocated->basic_policy() == UnallocatedOperand::FIXED_SLOT) {
158 constraint->type_ = sequence()->IsFloat(vreg) ? kDoubleSlot : kSlot; 158 constraint->type_ = sequence()->IsFloat(vreg) ? kDoubleSlot : kSlot;
159 constraint->value_ = unallocated->fixed_slot_index(); 159 constraint->value_ = unallocated->fixed_slot_index();
160 } else { 160 } else {
161 switch (unallocated->extended_policy()) { 161 switch (unallocated->extended_policy()) {
162 case UnallocatedOperand::ANY: 162 case UnallocatedOperand::ANY:
163 CHECK(false);
164 break;
165 case UnallocatedOperand::NONE: 163 case UnallocatedOperand::NONE:
166 if (sequence()->IsFloat(vreg)) { 164 if (sequence()->IsFloat(vreg)) {
167 constraint->type_ = kNoneDouble; 165 constraint->type_ = kNoneDouble;
168 } else { 166 } else {
169 constraint->type_ = kNone; 167 constraint->type_ = kNone;
170 } 168 }
171 break; 169 break;
172 case UnallocatedOperand::FIXED_REGISTER: 170 case UnallocatedOperand::FIXED_REGISTER:
173 constraint->type_ = kFixedRegister; 171 constraint->type_ = kFixedRegister;
174 constraint->value_ = unallocated->fixed_register_index(); 172 constraint->value_ = unallocated->fixed_register_index();
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698 int virtual_register = op_constraints[count].virtual_register_; 696 int virtual_register = op_constraints[count].virtual_register_;
699 current->Define(zone(), instr->OutputAt(i), virtual_register); 697 current->Define(zone(), instr->OutputAt(i), virtual_register);
700 } 698 }
701 } 699 }
702 } 700 }
703 } 701 }
704 702
705 } // namespace compiler 703 } // namespace compiler
706 } // namespace internal 704 } // namespace internal
707 } // namespace v8 705 } // namespace v8
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