[turbofan]: Elide extra move when accessing stack or frame register

src/arm/frames-arm.cc

Index: src/arm/frames-arm.cc
diff --git a/src/arm/frames-arm.cc b/src/arm/frames-arm.cc
index 3f3c4f04c21def897eeee0c8c07a606c2e5760cd..db91ac84f131b449f2a55c24b67563e8d816f59e 100644
--- a/src/arm/frames-arm.cc
+++ b/src/arm/frames-arm.cc
@@ -18,7 +18,8 @@ namespace v8 {
 namespace internal {
 
 
-Register JavaScriptFrame::fp_register() { return v8::internal::fp; }
+Register StandardFrame::sp_register() { return v8::internal::sp; }
+Register StandardFrame::fp_register() { return v8::internal::fp; }
 Register JavaScriptFrame::context_register() { return cp; }
 Register JavaScriptFrame::constant_pool_pointer_register() {
   DCHECK(FLAG_enable_embedded_constant_pool);