[ic] Port {Load,Store}IC_Normal to TF

src/ic/arm64/ic-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/codegen.h"
 #include "src/ic/ic.h"
 #include "src/ic/ic-compiler.h"
 #include "src/ic/stub-cache.h"
 
 namespace v8 {
 namespace internal {
 
 
 #define __ ACCESS_MASM(masm)
 
-// Helper function used from LoadIC GenerateNormal.
-//
-// elements: Property dictionary. It is not clobbered if a jump to the miss
-//           label is done.
-// name:     Property name. It is not clobbered if a jump to the miss label is
-//           done
-// result:   Register for the result. It is only updated if a jump to the miss
-//           label is not done.
-// The scratch registers need to be different from elements, name and result.
-// The generated code assumes that the receiver has slow properties,
-// is not a global object and does not have interceptors.
-static void GenerateDictionaryLoad(MacroAssembler* masm, Label* miss,
-                                   Register elements, Register name,
-                                   Register result, Register scratch1,
-                                   Register scratch2) {
-  DCHECK(!AreAliased(elements, name, scratch1, scratch2));
-  DCHECK(!AreAliased(result, scratch1, scratch2));
-
-  Label done;
-
-  // Probe the dictionary.
-  NameDictionaryLookupStub::GeneratePositiveLookup(masm, miss, &done, elements,
-                                                   name, scratch1, scratch2);
-
-  // If probing finds an entry check that the value is a normal property.
-  __ Bind(&done);
-
-  static const int kElementsStartOffset =
-      NameDictionary::kHeaderSize +
-      NameDictionary::kElementsStartIndex * kPointerSize;
-  static const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize;
-  __ Ldr(scratch1, FieldMemOperand(scratch2, kDetailsOffset));
-  __ Tst(scratch1, Smi::FromInt(PropertyDetails::TypeField::kMask));
-  __ B(ne, miss);
-
-  // Get the value at the masked, scaled index and return.
-  __ Ldr(result,
-         FieldMemOperand(scratch2, kElementsStartOffset + 1 * kPointerSize));
-}
-
-
-// Helper function used from StoreIC::GenerateNormal.
-//
-// elements: Property dictionary. It is not clobbered if a jump to the miss
-//           label is done.
-// name:     Property name. It is not clobbered if a jump to the miss label is
-//           done
-// value:    The value to store (never clobbered).
-//
-// The generated code assumes that the receiver has slow properties,
-// is not a global object and does not have interceptors.
-static void GenerateDictionaryStore(MacroAssembler* masm, Label* miss,
-                                    Register elements, Register name,
-                                    Register value, Register scratch1,
-                                    Register scratch2) {
-  DCHECK(!AreAliased(elements, name, value, scratch1, scratch2));
-
-  Label done;
-
-  // Probe the dictionary.
-  NameDictionaryLookupStub::GeneratePositiveLookup(masm, miss, &done, elements,
-                                                   name, scratch1, scratch2);
-
-  // If probing finds an entry in the dictionary check that the value
-  // is a normal property that is not read only.
-  __ Bind(&done);
-
-  static const int kElementsStartOffset =
-      NameDictionary::kHeaderSize +
-      NameDictionary::kElementsStartIndex * kPointerSize;
-  static const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize;
-  static const int kTypeAndReadOnlyMask =
-      PropertyDetails::TypeField::kMask |
-      PropertyDetails::AttributesField::encode(READ_ONLY);
-  __ Ldrsw(scratch1, UntagSmiFieldMemOperand(scratch2, kDetailsOffset));
-  __ Tst(scratch1, kTypeAndReadOnlyMask);
-  __ B(ne, miss);
-
-  // Store the value at the masked, scaled index and return.
-  static const int kValueOffset = kElementsStartOffset + kPointerSize;
-  __ Add(scratch2, scratch2, kValueOffset - kHeapObjectTag);
-  __ Str(value, MemOperand(scratch2));
-
-  // Update the write barrier. Make sure not to clobber the value.
-  __ Mov(scratch1, value);
-  __ RecordWrite(elements, scratch2, scratch1, kLRHasNotBeenSaved,
-                 kDontSaveFPRegs);
-}
-
-void LoadIC::GenerateNormal(MacroAssembler* masm) {
-  Register dictionary = x0;
-  DCHECK(!dictionary.is(LoadDescriptor::ReceiverRegister()));
-  DCHECK(!dictionary.is(LoadDescriptor::NameRegister()));
-  Label slow;
-
-  __ Ldr(dictionary, FieldMemOperand(LoadDescriptor::ReceiverRegister(),
-                                     JSObject::kPropertiesOffset));
-  GenerateDictionaryLoad(masm, &slow, dictionary,
-                         LoadDescriptor::NameRegister(), x0, x3, x4);
-  __ Ret();
-
-  // Dictionary load failed, go slow (but don't miss).
-  __ Bind(&slow);
-  GenerateRuntimeGetProperty(masm);
-}
-
-void LoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
-  // The return address is in lr.
-  __ Push(LoadDescriptor::ReceiverRegister(), LoadDescriptor::NameRegister());
-
-  // Do tail-call to runtime routine.
-  __ TailCallRuntime(Runtime::kGetProperty);
-}
-
 static void StoreIC_PushArgs(MacroAssembler* masm) {
   __ Push(StoreWithVectorDescriptor::ValueRegister(),
           StoreWithVectorDescriptor::SlotRegister(),
           StoreWithVectorDescriptor::VectorRegister(),
           StoreWithVectorDescriptor::ReceiverRegister(),
           StoreWithVectorDescriptor::NameRegister());
 }
 
 
 void KeyedStoreIC::GenerateMiss(MacroAssembler* masm) {
   ASM_LOCATION("KeyedStoreIC::GenerateMiss");
   StoreIC_PushArgs(masm);
   __ TailCallRuntime(Runtime::kKeyedStoreIC_Miss);
 }
 
 void KeyedStoreIC::GenerateSlow(MacroAssembler* masm) {
   ASM_LOCATION("KeyedStoreIC::GenerateSlow");
   StoreIC_PushArgs(masm);
 
   // The slow case calls into the runtime to complete the store without causing
   // an IC miss that would otherwise cause a transition to the generic stub.
   __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow);
 }
 
-void StoreIC::GenerateMiss(MacroAssembler* masm) {
-  StoreIC_PushArgs(masm);
-
-  // Tail call to the entry.
-  __ TailCallRuntime(Runtime::kStoreIC_Miss);
-}
-
-
-void StoreIC::GenerateNormal(MacroAssembler* masm) {
-  Label miss;
-  Register value = StoreDescriptor::ValueRegister();
-  Register receiver = StoreDescriptor::ReceiverRegister();
-  Register name = StoreDescriptor::NameRegister();
-  Register dictionary = x5;
-  DCHECK(!AreAliased(value, receiver, name,
-                     StoreWithVectorDescriptor::SlotRegister(),
-                     StoreWithVectorDescriptor::VectorRegister(), x5, x6, x7));
-
-  __ Ldr(dictionary, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
-
-  GenerateDictionaryStore(masm, &miss, dictionary, name, value, x6, x7);
-  Counters* counters = masm->isolate()->counters();
-  __ IncrementCounter(counters->ic_store_normal_hit(), 1, x6, x7);
-  __ Ret();
-
-  // Cache miss: Jump to runtime.
-  __ Bind(&miss);
-  __ IncrementCounter(counters->ic_store_normal_miss(), 1, x6, x7);
-  GenerateMiss(masm);
-}
-
-
 Condition CompareIC::ComputeCondition(Token::Value op) {
   switch (op) {
     case Token::EQ_STRICT:
     case Token::EQ:
       return eq;
     case Token::LT:
       return lt;
     case Token::GT:
       return gt;
     case Token::LTE:
@@ skipping 71 matching lines @@
   } else {
     DCHECK(to_patch->Mask(TestBranchMask) == TBNZ);
     // This is JumpIfSmi(smi_reg, branch_imm).
     patcher.tbz(smi_reg, 0, branch_imm);
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64