Simplify dispatch in optimizing compile stubs.

src/ia32/builtins-ia32.cc

Index: src/ia32/builtins-ia32.cc
diff --git a/src/ia32/builtins-ia32.cc b/src/ia32/builtins-ia32.cc
index a493fa54f29c624bb64c530bc382709642b8b7c6..71e353bf77eb29fad18efee5be1028a745f118c0 100644
--- a/src/ia32/builtins-ia32.cc
+++ b/src/ia32/builtins-ia32.cc
@@ -788,29 +788,14 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
 }
 
 
-static void CallCompileOptimized(MacroAssembler* masm, bool concurrent) {
-  FrameScope scope(masm, StackFrame::INTERNAL);
-  // Push a copy of the function.
-  __ push(edi);
-  // Function is also the parameter to the runtime call.
-  __ push(edi);
-  // Whether to compile in a background thread.
-  __ Push(masm->isolate()->factory()->ToBoolean(concurrent));
-
-  __ CallRuntime(Runtime::kCompileOptimized, 2);
-  // Restore receiver.
-  __ pop(edi);
-}
-
-
 void Builtins::Generate_CompileOptimized(MacroAssembler* masm) {
-  CallCompileOptimized(masm, false);
+  CallRuntimePassFunction(masm, Runtime::kCompileOptimized_NotConcurrent);
   GenerateTailCallToReturnedCode(masm);
 }
 
 
 void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) {
-  CallCompileOptimized(masm, true);
+  CallRuntimePassFunction(masm, Runtime::kCompileOptimized_Concurrent);
   GenerateTailCallToReturnedCode(masm);
 }