Incorporate the arguments to the code generator constructors and their

src/x64/fast-codegen-x64.cc

Index: src/x64/fast-codegen-x64.cc
===================================================================
--- src/x64/fast-codegen-x64.cc	(revision 3788)
+++ src/x64/fast-codegen-x64.cc	(working copy)
@@ -37,7 +37,7 @@
 
 void FastCodeGenerator::EmitLoadReceiver(Register reg) {
   // Offset 2 is due to return address and saved frame pointer.
-  int index = 2 + function()->scope()->num_parameters();
+  int index = 2 + scope()->num_parameters();
   __ movq(reg, Operand(rbp, index * kPointerSize));
 }
 
@@ -102,10 +102,8 @@
 }
 
 
-void FastCodeGenerator::Generate(FunctionLiteral* fun, CompilationInfo* info) {
-  ASSERT(function_ == NULL);
+void FastCodeGenerator::Generate(CompilationInfo* info) {
   ASSERT(info_ == NULL);
-  function_ = fun;
   info_ = info;
 
   // Save the caller's frame pointer and set up our own.
@@ -120,7 +118,7 @@
   // Receiver (this) is allocated to rdx if there are this properties.
   if (has_this_properties()) EmitReceiverMapCheck();
 
-  VisitStatements(fun->body());
+  VisitStatements(info->function()->body());
 
   Comment return_cmnt(masm(), ";; Return(<undefined>)");
   __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
@@ -128,7 +126,7 @@
   Comment epilogue_cmnt(masm(), ";; Epilogue");
   __ movq(rsp, rbp);
   __ pop(rbp);
-  __ ret((fun->scope()->num_parameters() + 1) * kPointerSize);
+  __ ret((scope()->num_parameters() + 1) * kPointerSize);
 
   __ bind(&bailout_);
 }