Remove CompilationInfo::MayUseThis() and replace it with what we really want to know: MustReplaceUn…

src/compiler.cc

 // Copyright 2012 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.
 
 #include "src/compiler.h"
 
 #include <algorithm>
 
 #include "src/ast-numbering.h"
 #include "src/bootstrapper.h"
@@ skipping 239 matching lines @@
   // type feedback vector.
   CHECK(!feedback_vector_->SpecDiffersFrom(literal()->feedback_vector_spec()));
 }
 
 
 bool CompilationInfo::has_simple_parameters() {
   return scope()->has_simple_parameters();
 }
 
 
-bool CompilationInfo::MayUseThis() const {
-  return scope()->has_this_declaration() && scope()->receiver()->is_used();
-}
-
-
 int CompilationInfo::TraceInlinedFunction(Handle<SharedFunctionInfo> shared,
                                           SourcePosition position,
                                           int parent_id) {
   DCHECK(track_positions_);
 
   int inline_id = static_cast<int>(inlined_function_infos_.size());
   InlinedFunctionInfo info(parent_id, position, UnboundScript::kNoScriptId,
       shared->start_position());
   if (!shared->script()->IsUndefined()) {
     Handle<Script> script(Script::cast(shared->script()));
@@ skipping 46 matching lines @@
     base::SmartArrayPointer<char> name(new char[len]);
     memcpy(name.get(), code_stub_debug_name_, len);
     return name;
   } else {
     AllowHandleDereference allow_deref;
     return literal()->debug_name()->ToCString();
   }
 }
 
 
+bool CompilationInfo::MustReplaceUndefinedReceiverWithGlobalProxy() {
+  return is_sloppy(language_mode()) && !is_native() &&
+         scope()->has_this_declaration() && scope()->receiver()->is_used();
+}
+
+
 class HOptimizedGraphBuilderWithPositions: public HOptimizedGraphBuilder {
  public:
   explicit HOptimizedGraphBuilderWithPositions(CompilationInfo* info)
       : HOptimizedGraphBuilder(info) {
   }
 
 #define DEF_VISIT(type)                                      \
   void Visit##type(type* node) override {                    \
     SourcePosition old_position = SourcePosition::Unknown(); \
     if (node->position() != RelocInfo::kNoPosition) {        \
@@ skipping 1402 matching lines @@
   // character is in the FLAG_trace_phase command line parameter.
   AllowHandleDereference allow_deref;
   bool tracing_on = info()->IsStub()
       ? FLAG_trace_hydrogen_stubs
       : (FLAG_trace_hydrogen &&
          info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter));
   return (tracing_on &&
       base::OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL);
 }
 
-
 #if DEBUG
 void CompilationInfo::PrintAstForTesting() {
   PrintF("--- Source from AST ---\n%s\n",
          PrettyPrinter(isolate(), zone()).PrintProgram(literal()));
 }
 #endif
 }  // namespace internal
 }  // namespace v8