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

src/full-codegen/mips64/full-codegen-mips64.cc

Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index 5812ff454ec318c64213dd5e814e542d79fd89f2..ce3793f5d70417d818052861907a4cada9a7c0cd 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -3368,11 +3368,13 @@ void FullCodeGenerator::EmitCreateIterResultObject(CallRuntime* expr) {
 
 
 void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) {
+  // Push function.
+  __ LoadNativeContextSlot(expr->context_index(), v0);
+  PushOperand(v0);
+
   // Push undefined as the receiver.
   __ LoadRoot(v0, Heap::kUndefinedValueRootIndex);
   PushOperand(v0);
-
-  __ LoadNativeContextSlot(expr->context_index(), v0);
 }
 
 
@@ -3397,11 +3399,6 @@ void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) {
     Comment cmnt(masm_, "[ CallRuntime");
     EmitLoadJSRuntimeFunction(expr);
 
-    // Push the target function under the receiver.
-    __ ld(at, MemOperand(sp, 0));
-    PushOperand(at);
-    __ sd(v0, MemOperand(sp, kPointerSize));
-
     // Push the arguments ("left-to-right").
     for (int i = 0; i < arg_count; i++) {
       VisitForStackValue(args->at(i));