[fullcodegen] Avoid arguments juggling when calling a JS runtime function.

src/full-codegen/ppc/full-codegen-ppc.cc

Index: src/full-codegen/ppc/full-codegen-ppc.cc
diff --git a/src/full-codegen/ppc/full-codegen-ppc.cc b/src/full-codegen/ppc/full-codegen-ppc.cc
index c4c358c0c0336be7935109b5471644509ee436ca..14ce98f4afff0f1b22e4f76097663abfe736ad6e 100644
--- a/src/full-codegen/ppc/full-codegen-ppc.cc
+++ b/src/full-codegen/ppc/full-codegen-ppc.cc
@@ -3350,11 +3350,13 @@ void FullCodeGenerator::EmitCreateIterResultObject(CallRuntime* expr) {
 
 
 void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) {
+  // Push function.
+  __ LoadNativeContextSlot(expr->context_index(), r3);
+  PushOperand(r3);
+
   // Push undefined as the receiver.
   __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
   PushOperand(r3);
-
-  __ LoadNativeContextSlot(expr->context_index(), r3);
 }
 
 
@@ -3379,11 +3381,6 @@ void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) {
     Comment cmnt(masm_, "[ CallRuntime");
     EmitLoadJSRuntimeFunction(expr);
 
-    // Push the target function under the receiver.
-    __ LoadP(ip, MemOperand(sp, 0));
-    PushOperand(ip);
-    __ StoreP(r3, MemOperand(sp, kPointerSize));
-
     // Push the arguments ("left-to-right").
     for (int i = 0; i < arg_count; i++) {
       VisitForStackValue(args->at(i));