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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include <map> | 5 #include <map> |
6 #include <set> | 6 #include <set> |
7 #include <string> | 7 #include <string> |
8 | 8 |
9 #include "vm/kernel_to_il.h" | 9 #include "vm/kernel_to_il.h" |
10 | 10 |
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2743 UNREACHABLE(); | 2743 UNREACHABLE(); |
2744 return NULL; | 2744 return NULL; |
2745 } | 2745 } |
2746 | 2746 |
2747 | 2747 |
2748 FlowGraph* FlowGraphBuilder::BuildGraphOfFunction(FunctionNode* function, | 2748 FlowGraph* FlowGraphBuilder::BuildGraphOfFunction(FunctionNode* function, |
2749 Constructor* constructor) { | 2749 Constructor* constructor) { |
2750 const Function& dart_function = parsed_function_->function(); | 2750 const Function& dart_function = parsed_function_->function(); |
2751 TargetEntryInstr* normal_entry = BuildTargetEntry(); | 2751 TargetEntryInstr* normal_entry = BuildTargetEntry(); |
2752 graph_entry_ = new (Z) | 2752 graph_entry_ = new (Z) |
2753 GraphEntryInstr(*parsed_function_, normal_entry, Compiler::kNoOSRDeoptId); | 2753 GraphEntryInstr(*parsed_function_, normal_entry, osr_id_); |
2754 | 2754 |
2755 SetupDefaultParameterValues(function); | 2755 SetupDefaultParameterValues(function); |
2756 | 2756 |
2757 Fragment body; | 2757 Fragment body; |
2758 if (!dart_function.is_native()) body += CheckStackOverflowInPrologue(); | 2758 if (!dart_function.is_native()) body += CheckStackOverflowInPrologue(); |
2759 intptr_t context_size = | 2759 intptr_t context_size = |
2760 parsed_function_->node_sequence()->scope()->num_context_variables(); | 2760 parsed_function_->node_sequence()->scope()->num_context_variables(); |
2761 if (context_size > 0) { | 2761 if (context_size > 0) { |
2762 body += PushContext(context_size); | 2762 body += PushContext(context_size); |
2763 LocalVariable* context = MakeTemporary(); | 2763 LocalVariable* context = MakeTemporary(); |
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2910 // False branch will contain the next comparison. | 2910 // False branch will contain the next comparison. |
2911 dispatch = Fragment(dispatch.entry, otherwise); | 2911 dispatch = Fragment(dispatch.entry, otherwise); |
2912 block = otherwise; | 2912 block = otherwise; |
2913 } | 2913 } |
2914 body = dispatch; | 2914 body = dispatch; |
2915 | 2915 |
2916 context_depth_ = current_context_depth; | 2916 context_depth_ = current_context_depth; |
2917 } | 2917 } |
2918 normal_entry->LinkTo(body.entry); | 2918 normal_entry->LinkTo(body.entry); |
2919 | 2919 |
| 2920 // When compiling for OSR, use a depth first search to prune instructions |
| 2921 // unreachable from the OSR entry. Catch entries are always considered |
| 2922 // reachable, even if they become unreachable after OSR. |
| 2923 if (osr_id_ != Compiler::kNoOSRDeoptId) { |
| 2924 BitVector* block_marks = new(Z) BitVector(Z, next_block_id_); |
| 2925 bool found = graph_entry_->PruneUnreachable(graph_entry_, NULL, osr_id_, |
| 2926 block_marks); |
| 2927 ASSERT(found); |
| 2928 } |
2920 return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1); | 2929 return new (Z) FlowGraph(*parsed_function_, graph_entry_, next_block_id_ - 1); |
2921 } | 2930 } |
2922 | 2931 |
2923 | 2932 |
2924 Fragment FlowGraphBuilder::NativeFunctionBody(FunctionNode* kernel_function, | 2933 Fragment FlowGraphBuilder::NativeFunctionBody(FunctionNode* kernel_function, |
2925 const Function& function) { | 2934 const Function& function) { |
2926 ASSERT(function.is_native()); | 2935 ASSERT(function.is_native()); |
2927 // We explicitly build the graph for native functions in the same way that the | 2936 // We explicitly build the graph for native functions in the same way that the |
2928 // from-source backend does. We should find a way to have a single component | 2937 // from-source backend does. We should find a way to have a single component |
2929 // to build these graphs so that this code is not duplicated. | 2938 // to build these graphs so that this code is not duplicated. |
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5569 instructions += LoadLocal(closure); | 5578 instructions += LoadLocal(closure); |
5570 instructions += LoadLocal(parsed_function_->current_context_var()); | 5579 instructions += LoadLocal(parsed_function_->current_context_var()); |
5571 instructions += StoreInstanceField(Closure::context_offset()); | 5580 instructions += StoreInstanceField(Closure::context_offset()); |
5572 | 5581 |
5573 return instructions; | 5582 return instructions; |
5574 } | 5583 } |
5575 | 5584 |
5576 | 5585 |
5577 } // namespace kernel | 5586 } // namespace kernel |
5578 } // namespace dart | 5587 } // namespace dart |
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