SMI checks for receiver in KeyedLoad/Store (done right this time)

src/x64/stub-cache-x64.cc

Index: src/x64/stub-cache-x64.cc
diff --git a/src/x64/stub-cache-x64.cc b/src/x64/stub-cache-x64.cc
index 71ea4ee34bad750a636507f2acedfde5d1b3409e..143d8d8697ee19b159837b8c2896e2b0c4e80eb4 100644
--- a/src/x64/stub-cache-x64.cc
+++ b/src/x64/stub-cache-x64.cc
@@ -2501,9 +2501,6 @@ MaybeObject* KeyedStoreStubCompiler::CompileStoreFastElement(
   //  -- rdx    : receiver
   //  -- rsp[0] : return address
   // -----------------------------------
-  Label miss;
-  __ JumpIfSmi(rdx, &miss);
-
   bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE;
   MaybeObject* maybe_stub =
       KeyedStoreFastElementStub(is_js_array).TryGetCode();
@@ -2514,7 +2511,6 @@ MaybeObject* KeyedStoreStubCompiler::CompileStoreFastElement(
                  Handle<Code>(stub),
                  DO_SMI_CHECK);
 
-  __ bind(&miss);
   Handle<Code> ic = isolate()->builtins()->KeyedStoreIC_Miss();
   __ jmp(ic, RelocInfo::CODE_TARGET);
 
@@ -2963,9 +2959,6 @@ MaybeObject* KeyedLoadStubCompiler::CompileLoadFastElement(Map* receiver_map) {
   //  -- rdx    : receiver
   //  -- rsp[0] : return address
   // -----------------------------------
-  Label miss;
-  __ JumpIfSmi(rdx, &miss);
-
   MaybeObject* maybe_stub = KeyedLoadFastElementStub().TryGetCode();
   Code* stub;
   if (!maybe_stub->To(&stub)) return maybe_stub;
@@ -2974,7 +2967,6 @@ MaybeObject* KeyedLoadStubCompiler::CompileLoadFastElement(Map* receiver_map) {
                  Handle<Code>(stub),
                  DO_SMI_CHECK);
 
-  __ bind(&miss);
   Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Miss();
   __ jmp(ic, RelocInfo::CODE_TARGET);