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Side by Side Diff: src/compiler/liveness-analyzer.cc

Issue 2495413003: [turbofan] Do not use the state value cache when building the tree (Closed)
Patch Set: Re-upload Created 4 years, 1 month 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/base/adapters.h" 5 #include "src/base/adapters.h"
6 #include "src/compiler/js-graph.h" 6 #include "src/compiler/js-graph.h"
7 #include "src/compiler/liveness-analyzer.h" 7 #include "src/compiler/liveness-analyzer.h"
8 #include "src/compiler/node.h" 8 #include "src/compiler/node.h"
9 #include "src/compiler/node-matchers.h" 9 #include "src/compiler/node-matchers.h"
10 #include "src/compiler/state-values-utils.h" 10 #include "src/compiler/state-values-utils.h"
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153 state_values_cache()->GetNodeForValues(&replacement_node_, 1); 153 state_values_cache()->GetNodeForValues(&replacement_node_, 1);
154 frame_state->ReplaceInput(2, new_value); 154 frame_state->ReplaceInput(2, new_value);
155 } 155 }
156 } 156 }
157 } 157 }
158 158
159 159
160 Node* NonLiveFrameStateSlotReplacer::ClearNonLiveStateValues( 160 Node* NonLiveFrameStateSlotReplacer::ClearNonLiveStateValues(
161 Node* values, BitVector* liveness) { 161 Node* values, BitVector* liveness) {
162 DCHECK(inputs_buffer_.empty()); 162 DCHECK(inputs_buffer_.empty());
163 for (StateValuesAccess::TypedNode node : StateValuesAccess(values)) { 163
164 int var = 0;
165 for (Node* value_node : values->inputs()) {
166 // Make sure this isn't a state value tree
167 DCHECK(value_node->opcode() != IrOpcode::kStateValues);
168
164 // Index of the next variable is its furure index in the inputs buffer, 169 // Index of the next variable is its furure index in the inputs buffer,
165 // i.e., the buffer's size. 170 // i.e., the buffer's size.
166 int var = static_cast<int>(inputs_buffer_.size());
167 bool live = liveness->Contains(var) || permanently_live_.Contains(var); 171 bool live = liveness->Contains(var) || permanently_live_.Contains(var);
168 inputs_buffer_.push_back(live ? node.node : replacement_node_); 172 inputs_buffer_.push_back(live ? value_node : replacement_node_);
173
174 var++;
169 } 175 }
176
170 Node* result = state_values_cache()->GetNodeForValues( 177 Node* result = state_values_cache()->GetNodeForValues(
171 inputs_buffer_.empty() ? nullptr : &(inputs_buffer_.front()), 178 inputs_buffer_.empty() ? nullptr : &(inputs_buffer_.front()),
172 inputs_buffer_.size()); 179 inputs_buffer_.size());
173 inputs_buffer_.clear(); 180 inputs_buffer_.clear();
174 return result; 181 return result;
175 } 182 }
176 183
177 184
178 void LivenessAnalyzerBlock::Print(std::ostream& os) { 185 void LivenessAnalyzerBlock::Print(std::ostream& os) {
179 os << "Block " << id(); 186 os << "Block " << id();
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217 for (int i = 0; i < live_.length(); i++) { 224 for (int i = 0; i < live_.length(); i++) {
218 os << (live_.Contains(i) ? "L" : "."); 225 os << (live_.Contains(i) ? "L" : ".");
219 } 226 }
220 os << std::endl; 227 os << std::endl;
221 } 228 }
222 } 229 }
223 230
224 } // namespace compiler 231 } // namespace compiler
225 } // namespace internal 232 } // namespace internal
226 } // namespace v8 233 } // namespace v8
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