Refactor polymorphic load and inline function graph construction.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 1007784e41fe492854de94096d3744e861ab85c6..5542211e541cea7a5142e997c6eb6481f11cbb76 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -92,8 +92,8 @@ void LCodeGen::FinishCode(Handle<Code> code) {
 
 void LCodeGen::Abort(const char* format, ...) {
   if (FLAG_trace_bailout) {
-    SmartPointer<char> debug_name = graph()->debug_name()->ToCString();
-    PrintF("Aborting LCodeGen in @\"%s\": ", *debug_name);
+    SmartPointer<char> name(info()->shared_info()->DebugName()->ToCString());
+    PrintF("Aborting LCodeGen in @\"%s\": ", *name);
     va_list arguments;
     va_start(arguments, format);
     OS::VPrint(format, arguments);
@@ -2293,7 +2293,7 @@ void LCodeGen::CallKnownFunction(Handle<JSFunction> function,
                                  LInstruction* instr) {
   // Change context if needed.
   bool change_context =
-      (graph()->info()->closure()->context() != function->context()) ||
+      (info()->closure()->context() != function->context()) ||
       scope()->contains_with() ||
       (scope()->num_heap_slots() > 0);
   if (change_context) {
@@ -2310,7 +2310,7 @@ void LCodeGen::CallKnownFunction(Handle<JSFunction> function,
   RecordPosition(pointers->position());
 
   // Invoke function.
-  if (*function == *graph()->info()->closure()) {
+  if (*function == *info()->closure()) {
     __ CallSelf();
   } else {
     __ call(FieldOperand(rdi, JSFunction::kCodeEntryOffset));