Introduce a stack-allocated structure to encapsulate compile-time information.

src/x64/codegen-x64.cc

Index: src/x64/codegen-x64.cc
diff --git a/src/x64/codegen-x64.cc b/src/x64/codegen-x64.cc
index f828cec31f963f20c53f679f3aef547799a43f12..30b3a6a2226291f99d5bc3861e7ba5ee42b0d81b 100644
--- a/src/x64/codegen-x64.cc
+++ b/src/x64/codegen-x64.cc
@@ -277,7 +277,7 @@ void CodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) {
 }
 
 
-void CodeGenerator::GenCode(FunctionLiteral* function) {
+void CodeGenerator::GenCode(FunctionLiteral* function, CompilationInfo* info) {
   // Record the position for debugging purposes.
   CodeForFunctionPosition(function);
   ZoneList<Statement*>* body = function->body();
@@ -293,7 +293,7 @@ void CodeGenerator::GenCode(FunctionLiteral* function) {
   set_in_spilled_code(false);
 
   // Adjust for function-level loop nesting.
-  loop_nesting_ += function->loop_nesting();
+  loop_nesting_ += info->loop_nesting();
 
   JumpTarget::set_compiling_deferred_code(false);
 
@@ -471,7 +471,7 @@ void CodeGenerator::GenCode(FunctionLiteral* function) {
   }
 
   // Adjust for function-level loop nesting.
-  loop_nesting_ -= function->loop_nesting();
+  loop_nesting_ -= info->loop_nesting();
 
   // Code generation state must be reset.
   ASSERT(state_ == NULL);