Remove keyed load "force generic" miss case.

BUG=
R=ishell@chromium.org

Review URL: https://chromiumcodereview.appspot.com/68213024

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17828 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/ic-arm.cc

@@ -827,7 +827,7 @@ void KeyedLoadIC::GenerateNonStrictArguments(MacroAssembler* masm) {
   __ mov(r0, r2);
   __ Ret();
   __ bind(&slow);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -887,7 +887,7 @@ void KeyedCallIC::GenerateNonStrictArguments(MacroAssembler* masm,
 }
 
 
-void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) {
+void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) {
   // ---------- S t a t e --------------
   //  -- lr     : return address
   //  -- r0     : key
@@ -900,9 +900,8 @@ void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) {
   __ Push(r1, r0);
 
   // Perform tail call to the entry.
-  ExternalReference ref = miss_mode == MISS_FORCE_GENERIC
-      ? ExternalReference(IC_Utility(kKeyedLoadIC_MissForceGeneric), isolate)
-      : ExternalReference(IC_Utility(kKeyedLoadIC_Miss), isolate);
+  ExternalReference ref =
+      ExternalReference(IC_Utility(kKeyedLoadIC_Miss), isolate);
 
   __ TailCallExternalReference(ref, 2, 1);
 }
@@ -1120,7 +1119,7 @@ void KeyedLoadIC::GenerateString(MacroAssembler* masm) {
   char_at_generator.GenerateSlow(masm, call_helper);
 
   __ bind(&miss);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -1160,7 +1159,7 @@ void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) {
       1);
 
   __ bind(&slow);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 

src/arm/stub-cache-arm.cc

@@ -3140,12 +3140,12 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
   //  -- r0     : key
   //  -- r1     : receiver
   // -----------------------------------
-  Label slow, miss_force_generic;
+  Label slow, miss;
 
   Register key = r0;
   Register receiver = r1;
 
-  __ UntagAndJumpIfNotSmi(r2, key, &miss_force_generic);
+  __ UntagAndJumpIfNotSmi(r2, key, &miss);
   __ ldr(r4, FieldMemOperand(receiver, JSObject::kElementsOffset));
   __ LoadFromNumberDictionary(&slow, r4, key, r0, r2, r3, r5);
   __ Ret();
@@ -3163,14 +3163,14 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Slow);
 
   // Miss case, call the runtime.
-  __ bind(&miss_force_generic);
+  __ bind(&miss);
 
   // ---------- S t a t e --------------
   //  -- lr     : return address
   //  -- r0     : key
   //  -- r1     : receiver
   // -----------------------------------
-  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_MissForceGeneric);
+  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 

src/builtins.cc

@@ -1351,12 +1351,7 @@ static void Generate_KeyedLoadIC_Slow(MacroAssembler* masm) {
 
 
 static void Generate_KeyedLoadIC_Miss(MacroAssembler* masm) {
-  KeyedLoadIC::GenerateMiss(masm, MISS);
-}
-
-
-static void Generate_KeyedLoadIC_MissForceGeneric(MacroAssembler* masm) {
-  KeyedLoadIC::GenerateMiss(masm, MISS_FORCE_GENERIC);
+  KeyedLoadIC::GenerateMiss(masm);
 }
 
 

src/builtins.h

@@ -119,8 +119,6 @@ enum BuiltinExtraArguments {
                                     Code::kNoExtraICState)              \
   V(KeyedLoadIC_Miss,               BUILTIN, UNINITIALIZED,             \
                                     Code::kNoExtraICState)              \
-  V(KeyedLoadIC_MissForceGeneric,   BUILTIN, UNINITIALIZED,             \
-                                    Code::kNoExtraICState)              \
   V(StoreIC_Miss,                   BUILTIN, UNINITIALIZED,             \
                                     Code::kNoExtraICState)              \
   V(KeyedStoreIC_Miss,              BUILTIN, UNINITIALIZED,             \

src/ia32/ic-ia32.cc

@@ -611,7 +611,7 @@ void KeyedLoadIC::GenerateString(MacroAssembler* masm) {
   char_at_generator.GenerateSlow(masm, call_helper);
 
   __ bind(&miss);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -653,7 +653,7 @@ void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) {
   __ TailCallExternalReference(ref, 2, 1);
 
   __ bind(&slow);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -678,7 +678,7 @@ void KeyedLoadIC::GenerateNonStrictArguments(MacroAssembler* masm) {
   __ mov(eax, unmapped_location);
   __ Ret();
   __ bind(&slow);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -1396,7 +1396,7 @@ void LoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
 }
 
 
-void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) {
+void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- ecx    : key
   //  -- edx    : receiver
@@ -1411,10 +1411,8 @@ void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) {
   __ push(ebx);  // return address
 
   // Perform tail call to the entry.
-  ExternalReference ref = miss_mode == MISS_FORCE_GENERIC
-      ? ExternalReference(IC_Utility(kKeyedLoadIC_MissForceGeneric),
-                          masm->isolate())
-      : ExternalReference(IC_Utility(kKeyedLoadIC_Miss), masm->isolate());
+  ExternalReference ref =
+      ExternalReference(IC_Utility(kKeyedLoadIC_Miss), masm->isolate());
   __ TailCallExternalReference(ref, 2, 1);
 }
 

src/ia32/stub-cache-ia32.cc

@@ -3211,11 +3211,11 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
   //  -- edx    : receiver
   //  -- esp[0] : return address
   // -----------------------------------
-  Label slow, miss_force_generic;
+  Label slow, miss;
 
   // This stub is meant to be tail-jumped to, the receiver must already
   // have been verified by the caller to not be a smi.
-  __ JumpIfNotSmi(ecx, &miss_force_generic);
+  __ JumpIfNotSmi(ecx, &miss);
   __ mov(ebx, ecx);
   __ SmiUntag(ebx);
   __ mov(eax, FieldOperand(edx, JSObject::kElementsOffset));
@@ -3238,13 +3238,13 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Slow);
 
-  __ bind(&miss_force_generic);
+  __ bind(&miss);
   // ----------- S t a t e -------------
   //  -- ecx    : key
   //  -- edx    : receiver
   //  -- esp[0] : return address
   // -----------------------------------
-  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_MissForceGeneric);
+  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 

src/ic.cc

@@ -1364,13 +1364,6 @@ Handle<Code> KeyedLoadIC::LoadElementStub(Handle<JSObject> receiver) {
 }
 
 
-MaybeObject* KeyedLoadIC::LoadForceGeneric(Handle<Object> object,
-                                           Handle<Object> key) {
-  set_target(*generic_stub());
-  return Runtime::GetObjectPropertyOrFail(isolate(), object, key);
-}
-
-
 MaybeObject* KeyedLoadIC::Load(Handle<Object> object, Handle<Object> key) {
   if (MigrateDeprecated(object)) {
     return Runtime::GetObjectPropertyOrFail(isolate(), object, key);
@@ -2119,17 +2112,6 @@ RUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_MissFromStubFailure) {
 }
 
 
-RUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_MissForceGeneric) {
-  HandleScope scope(isolate);
-  ASSERT(args.length() == 2);
-  KeyedLoadIC ic(IC::NO_EXTRA_FRAME, isolate);
-  Handle<Object> receiver = args.at<Object>(0);
-  Handle<Object> key = args.at<Object>(1);
-  ic.UpdateState(receiver, key);
-  return ic.LoadForceGeneric(receiver, key);
-}
-
-
 // Used from ic-<arch>.cc.
 RUNTIME_FUNCTION(MaybeObject*, StoreIC_Miss) {
   HandleScope scope(isolate);

src/ic.h

@@ -40,7 +40,6 @@ namespace internal {
 #define IC_UTIL_LIST(ICU)                             \
   ICU(LoadIC_Miss)                                    \
   ICU(KeyedLoadIC_Miss)                               \
-  ICU(KeyedLoadIC_MissForceGeneric)                   \
   ICU(CallIC_Miss)                                    \
   ICU(KeyedCallIC_Miss)                               \
   ICU(StoreIC_Miss)                                   \
@@ -469,12 +468,6 @@ class LoadIC: public IC {
 };
 
 
-enum ICMissMode {
-  MISS_FORCE_GENERIC,
-  MISS
-};
-
-
 class KeyedLoadIC: public LoadIC {
  public:
   explicit KeyedLoadIC(FrameDepth depth, Isolate* isolate)
@@ -482,20 +475,15 @@ class KeyedLoadIC: public LoadIC {
     ASSERT(target()->is_keyed_load_stub());
   }
 
-  MUST_USE_RESULT MaybeObject* LoadForceGeneric(Handle<Object> object,
-                                                Handle<Object> key);
-
   MUST_USE_RESULT MaybeObject* Load(Handle<Object> object,
                                     Handle<Object> key);
 
   // Code generator routines.
-  static void GenerateMiss(MacroAssembler* masm, ICMissMode force_generic);
+  static void GenerateMiss(MacroAssembler* masm);
   static void GenerateRuntimeGetProperty(MacroAssembler* masm);
-  static void GenerateInitialize(MacroAssembler* masm) {
-    GenerateMiss(masm, MISS);
-  }
+  static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); }
   static void GeneratePreMonomorphic(MacroAssembler* masm) {
-    GenerateMiss(masm, MISS);
+    GenerateMiss(masm);
   }
   static void GenerateGeneric(MacroAssembler* masm);
   static void GenerateString(MacroAssembler* masm);

src/mips/ic-mips.cc

@@ -826,7 +826,7 @@ void KeyedLoadIC::GenerateNonStrictArguments(MacroAssembler* masm) {
   __ Ret(USE_DELAY_SLOT);
   __ mov(v0, a2);
   __ bind(&slow);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -891,7 +891,7 @@ void KeyedCallIC::GenerateNonStrictArguments(MacroAssembler* masm,
 }
 
 
-void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) {
+void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) {
   // ---------- S t a t e --------------
   //  -- ra     : return address
   //  -- a0     : key
@@ -904,9 +904,8 @@ void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) {
   __ Push(a1, a0);
 
   // Perform tail call to the entry.
-  ExternalReference ref = miss_mode == MISS_FORCE_GENERIC
-      ? ExternalReference(IC_Utility(kKeyedLoadIC_MissForceGeneric), isolate)
-      : ExternalReference(IC_Utility(kKeyedLoadIC_Miss), isolate);
+  ExternalReference ref =
+      ExternalReference(IC_Utility(kKeyedLoadIC_Miss), isolate);
 
   __ TailCallExternalReference(ref, 2, 1);
 }
@@ -1131,7 +1130,7 @@ void KeyedLoadIC::GenerateString(MacroAssembler* masm) {
   char_at_generator.GenerateSlow(masm, call_helper);
 
   __ bind(&miss);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -1453,7 +1452,7 @@ void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) {
        IC_Utility(kKeyedLoadPropertyWithInterceptor), masm->isolate()), 2, 1);
 
   __ bind(&slow);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 

src/mips/stub-cache-mips.cc

@@ -3149,12 +3149,12 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
   //  -- a0     : key
   //  -- a1     : receiver
   // -----------------------------------
-  Label slow, miss_force_generic;
+  Label slow, miss;
 
   Register key = a0;
   Register receiver = a1;
 
-  __ JumpIfNotSmi(key, &miss_force_generic);
+  __ JumpIfNotSmi(key, &miss);
   __ lw(t0, FieldMemOperand(receiver, JSObject::kElementsOffset));
   __ sra(a2, a0, kSmiTagSize);
   __ LoadFromNumberDictionary(&slow, t0, a0, v0, a2, a3, t1);
@@ -3174,14 +3174,14 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Slow);
 
   // Miss case, call the runtime.
-  __ bind(&miss_force_generic);
+  __ bind(&miss);
 
   // ---------- S t a t e --------------
   //  -- ra     : return address
   //  -- a0     : key
   //  -- a1     : receiver
   // -----------------------------------
-  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_MissForceGeneric);
+  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 

src/x64/ic-x64.cc

@@ -540,7 +540,7 @@ void KeyedLoadIC::GenerateString(MacroAssembler* masm) {
   char_at_generator.GenerateSlow(masm, call_helper);
 
   __ bind(&miss);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -583,7 +583,7 @@ void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) {
       1);
 
   __ bind(&slow);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -1271,7 +1271,7 @@ void KeyedLoadIC::GenerateNonStrictArguments(MacroAssembler* masm) {
   __ movq(rax, unmapped_location);
   __ Ret();
   __ bind(&slow);
-  GenerateMiss(masm, MISS);
+  GenerateMiss(masm);
 }
 
 
@@ -1423,7 +1423,7 @@ void LoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
 }
 
 
-void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) {
+void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax    : key
   //  -- rdx    : receiver
@@ -1439,10 +1439,8 @@ void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) {
   __ PushReturnAddressFrom(rbx);
 
   // Perform tail call to the entry.
-  ExternalReference ref = miss_mode == MISS_FORCE_GENERIC
-      ? ExternalReference(IC_Utility(kKeyedLoadIC_MissForceGeneric),
-                          masm->isolate())
-      : ExternalReference(IC_Utility(kKeyedLoadIC_Miss), masm->isolate());
+  ExternalReference ref =
+      ExternalReference(IC_Utility(kKeyedLoadIC_Miss), masm->isolate());
   __ TailCallExternalReference(ref, 2, 1);
 }
 

src/x64/stub-cache-x64.cc

@@ -3124,12 +3124,12 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
   //  -- rdx    : receiver
   //  -- rsp[0] : return address
   // -----------------------------------
-  Label slow, miss_force_generic;
+  Label slow, miss;
 
   // This stub is meant to be tail-jumped to, the receiver must already
   // have been verified by the caller to not be a smi.
 
-  __ JumpIfNotSmi(rax, &miss_force_generic);
+  __ JumpIfNotSmi(rax, &miss);
   __ SmiToInteger32(rbx, rax);
   __ movq(rcx, FieldOperand(rdx, JSObject::kElementsOffset));
 
@@ -3149,13 +3149,13 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Slow);
 
-  __ bind(&miss_force_generic);
+  __ bind(&miss);
   // ----------- S t a t e -------------
   //  -- rax    : key
   //  -- rdx    : receiver
   //  -- rsp[0] : return address
   // -----------------------------------
-  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_MissForceGeneric);
+  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }