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

src/full-codegen/arm/full-codegen-arm.cc

Index: src/full-codegen/arm/full-codegen-arm.cc
diff --git a/src/full-codegen/arm/full-codegen-arm.cc b/src/full-codegen/arm/full-codegen-arm.cc
index a7cb24d8f653ff31270446073e3eaf43c0b5d955..07519d576eba02ad01d285ef73638e17c3d79a96 100644
--- a/src/full-codegen/arm/full-codegen-arm.cc
+++ b/src/full-codegen/arm/full-codegen-arm.cc
@@ -3355,11 +3355,13 @@ void FullCodeGenerator::EmitCreateIterResultObject(CallRuntime* expr) {
 
 
 void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) {
+  // Push function.
+  __ LoadNativeContextSlot(expr->context_index(), r0);
+  PushOperand(r0);
+
   // Push undefined as the receiver.
   __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
   PushOperand(r0);
-
-  __ LoadNativeContextSlot(expr->context_index(), r0);
 }
 
 
@@ -3384,11 +3386,6 @@ void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) {
     Comment cmnt(masm_, "[ CallRuntime");
     EmitLoadJSRuntimeFunction(expr);
 
-    // Push the target function under the receiver.
-    __ ldr(ip, MemOperand(sp, 0));
-    PushOperand(ip);
-    __ str(r0, MemOperand(sp, kPointerSize));
-
     // Push the arguments ("left-to-right").
     for (int i = 0; i < arg_count; i++) {
       VisitForStackValue(args->at(i));