Cleanup unnecessary duplication of runtime functions.

src/mips64/code-stubs-mips64.cc

Index: src/mips64/code-stubs-mips64.cc
diff --git a/src/mips64/code-stubs-mips64.cc b/src/mips64/code-stubs-mips64.cc
index 59d36c5fb52c8fd4806fd64989ec644844cb207a..55bf6e48c32e4200a63c053f6b12e4ed91e71993 100644
--- a/src/mips64/code-stubs-mips64.cc
+++ b/src/mips64/code-stubs-mips64.cc
@@ -1683,7 +1683,7 @@ void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) {
   // by calling the runtime system.
   __ bind(&slow);
   __ push(a1);
-  __ TailCallRuntime(Runtime::kGetArgumentsProperty, 1, 1);
+  __ TailCallRuntime(Runtime::kArguments, 1, 1);
 }
 
 
@@ -3488,7 +3488,7 @@ void SubStringStub::Generate(MacroAssembler* masm) {
 
   // Just jump to runtime to create the sub string.
   __ bind(&runtime);
-  __ TailCallRuntime(Runtime::kSubStringRT, 3, 1);
+  __ TailCallRuntime(Runtime::kSubString, 3, 1);
 
   __ bind(&single_char);
   // v0: original string
@@ -3682,7 +3682,7 @@ void StringCompareStub::Generate(MacroAssembler* masm) {
   StringHelper::GenerateCompareFlatOneByteStrings(masm, a1, a0, a2, a3, a4, a5);
 
   __ bind(&runtime);
-  __ TailCallRuntime(Runtime::kStringCompareRT, 2, 1);
+  __ TailCallRuntime(Runtime::kStringCompare, 2, 1);
 }
 
 
@@ -3992,7 +3992,7 @@ void CompareICStub::GenerateStrings(MacroAssembler* masm) {
   if (equality) {
     __ TailCallRuntime(Runtime::kStringEquals, 2, 1);
   } else {
-    __ TailCallRuntime(Runtime::kStringCompareRT, 2, 1);
+    __ TailCallRuntime(Runtime::kStringCompare, 2, 1);
   }
 
   __ bind(&miss);