Uniform and precise source positions for inlining

src/compiler/ast-graph-builder.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_AST_GRAPH_BUILDER_H_
 #define V8_COMPILER_AST_GRAPH_BUILDER_H_
 
 #include "src/ast/ast.h"
+#include "src/compiler/compiler-source-position-table.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/liveness-analyzer.h"
 #include "src/compiler/state-values-utils.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class BitVector;
 class CompilationInfo;
@@ skipping 591 matching lines @@
   NodeVector* contexts() { return &contexts_; }
   LivenessAnalyzerBlock* liveness_block() { return liveness_block_; }
   bool IsLivenessAnalysisEnabled();
   bool IsLivenessBlockConsistent();
 
   // Prepare environment to be used as loop header.
   void PrepareForLoop(BitVector* assigned);
   void PrepareForOsrEntry();
 };
 
+class AstGraphBuilderWithPositions final : public AstGraphBuilder {
+ public:
+  AstGraphBuilderWithPositions(Zone* local_zone, CompilationInfo* info,
+                               JSGraph* jsgraph, float invocation_frequency,
+                               LoopAssignmentAnalysis* loop_assignment,
+                               TypeHintAnalysis* type_hint_analysis,
+                               SourcePositionTable* source_positions,
+                               int inlining_id = -1);

[alph, 2016/11/07 22:38:39]

nit: = SourcePosition::kNotInlined

+
+  bool CreateGraph(bool stack_check = true) {
+    SourcePositionTable::Scope pos_scope(source_positions_, start_position_);
+    return AstGraphBuilder::CreateGraph(stack_check);
+  }
+
+#define DEF_VISIT(type)                                                     \
+  void Visit##type(type* node) override {                                   \
+    SourcePositionTable::Scope pos(                                         \
+        source_positions_, SourcePosition(node->position(), inlining_id_)); \
+    AstGraphBuilder::Visit##type(node);                                     \
+  }
+  AST_NODE_LIST(DEF_VISIT)
+#undef DEF_VISIT
+
+ private:
+  SourcePositionTable* const source_positions_;
+  SourcePosition const start_position_;
+  int const inlining_id_;
+};
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_AST_GRAPH_BUILDER_H_