Uniform and precise source positions for inlining

src/compiler/ast-graph-builder.h

Index: src/compiler/ast-graph-builder.h
diff --git a/src/compiler/ast-graph-builder.h b/src/compiler/ast-graph-builder.h
index e6cb52f839754dea48930a6fd4eebf49d335df7e..28f6e29af43d9397d23290df7fce8ce88ff1ec42 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -6,6 +6,7 @@
 #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"
@@ -617,6 +618,35 @@ class AstGraphBuilder::Environment : public ZoneObject {
   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