Uniform and precise source positions for inlining

src/compiler/js-inlining.h

Index: src/compiler/js-inlining.h
diff --git a/src/compiler/js-inlining.h b/src/compiler/js-inlining.h
index 323c3ae0bf1e183b6fc69ca8f90097ceb28553f4..9bb8ec46436d84477ee6695981604474ce8a240d 100644
--- a/src/compiler/js-inlining.h
+++ b/src/compiler/js-inlining.h
@@ -5,8 +5,8 @@
 #ifndef V8_COMPILER_JS_INLINING_H_
 #define V8_COMPILER_JS_INLINING_H_
 
-#include "src/compiler/js-graph.h"
 #include "src/compiler/graph-reducer.h"
+#include "src/compiler/js-graph.h"
 
 namespace v8 {
 namespace internal {
@@ -16,17 +16,20 @@ class CompilationInfo;
 
 namespace compiler {
 
+class SourcePositionTable;
+
 // The JSInliner provides the core graph inlining machinery. Note that this
 // class only deals with the mechanics of how to inline one graph into another,
 // heuristics that decide what and how much to inline are beyond its scope.
 class JSInliner final : public AdvancedReducer {
  public:
   JSInliner(Editor* editor, Zone* local_zone, CompilationInfo* info,
-            JSGraph* jsgraph)
+            JSGraph* jsgraph, SourcePositionTable* source_positions)
       : AdvancedReducer(editor),
         local_zone_(local_zone),
         info_(info),
-        jsgraph_(jsgraph) {}
+        jsgraph_(jsgraph),
+        source_positions_(source_positions) {}
 
   // Reducer interface, eagerly inlines everything.
   Reduction Reduce(Node* node) final;
@@ -45,6 +48,7 @@ class JSInliner final : public AdvancedReducer {
   Zone* const local_zone_;
   CompilationInfo* info_;
   JSGraph* const jsgraph_;
+  SourcePositionTable* const source_positions_;
 
   Node* CreateArtificialFrameState(Node* node, Node* outer_frame_state,
                                    int parameter_count,