Cleanup unnecessary duplication of runtime functions.

src/x87/code-stubs-x87.cc

Index: src/x87/code-stubs-x87.cc
diff --git a/src/x87/code-stubs-x87.cc b/src/x87/code-stubs-x87.cc
index a9a777e499d9caa76b2403d39ce330be7a6e067b..aba556d7beab20ccaef1341808996972286bf726 100644
--- a/src/x87/code-stubs-x87.cc
+++ b/src/x87/code-stubs-x87.cc
@@ -488,7 +488,7 @@ void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) {
   __ pop(ebx);  // Return address.
   __ push(edx);
   __ push(ebx);
-  __ TailCallRuntime(Runtime::kGetArgumentsProperty, 1, 1);
+  __ TailCallRuntime(Runtime::kArguments, 1, 1);
 }
 
 
@@ -3045,7 +3045,7 @@ 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);
   // eax: string
@@ -3268,7 +3268,7 @@ void StringCompareStub::Generate(MacroAssembler* masm) {
   // Call the runtime; it returns -1 (less), 0 (equal), or 1 (greater)
   // tagged as a small integer.
   __ bind(&runtime);
-  __ TailCallRuntime(Runtime::kStringCompareRT, 2, 1);
+  __ TailCallRuntime(Runtime::kStringCompare, 2, 1);
 }
 
 
@@ -3552,7 +3552,7 @@ 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);