[cleanup] Port KeyedLoadIC_{Slow,Miss} to TF and drop unused IC handler code

src/ic/arm64/handler-compiler-arm64.cc

 // Copyright 2014 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/ic/handler-compiler.h"
 
 #include "src/api-arguments.h"
 #include "src/field-type.h"
@@ skipping 26 matching lines @@
   __ Pop(slot);
 }
 
 
 void PropertyHandlerCompiler::DiscardVectorAndSlot() {
   MacroAssembler* masm = this->masm();
   // Remove vector and slot.
   __ Drop(2);
 }
 
-void PropertyHandlerCompiler::PushReturnAddress(Register tmp) {
-  // No-op. Return address is in lr register.
-}
-
-void PropertyHandlerCompiler::PopReturnAddress(Register tmp) {
-  // No-op. Return address is in lr register.
-}
-
 void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup(
     MacroAssembler* masm, Label* miss_label, Register receiver,
     Handle<Name> name, Register scratch0, Register scratch1) {
   DCHECK(!AreAliased(receiver, scratch0, scratch1));
   DCHECK(name->IsUniqueName());
   Counters* counters = masm->isolate()->counters();
   __ IncrementCounter(counters->negative_lookups(), 1, scratch0, scratch1);
   __ IncrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1);
 
   Label done;
@@ skipping 19 matching lines @@
   // Check that the properties array is a dictionary.
   __ Ldr(map, FieldMemOperand(properties, HeapObject::kMapOffset));
   __ JumpIfNotRoot(map, Heap::kHashTableMapRootIndex, miss_label);
 
   NameDictionaryLookupStub::GenerateNegativeLookup(
       masm, miss_label, &done, receiver, properties, name, scratch1);
   __ Bind(&done);
   __ DecrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1);
 }
 
-
-void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype(
-    MacroAssembler* masm, int index, Register result, Label* miss) {
-  __ LoadNativeContextSlot(index, result);
-  // Load its initial map. The global functions all have initial maps.
-  __ Ldr(result,
-         FieldMemOperand(result, JSFunction::kPrototypeOrInitialMapOffset));
-  // Load the prototype from the initial map.
-  __ Ldr(result, FieldMemOperand(result, Map::kPrototypeOffset));
-}
-
-
 void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(
     MacroAssembler* masm, Register receiver, Register scratch1,
     Register scratch2, Label* miss_label) {
   __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label);
   // TryGetFunctionPrototype can't put the result directly in x0 because the
   // 3 inputs registers can't alias and we call this function from
   // LoadIC::GenerateFunctionPrototype, where receiver is x0. So we explicitly
   // move the result in x0.
   __ Mov(x0, scratch1);
   __ Ret();
@@ skipping 263 matching lines @@
 
 
 void NamedStoreHandlerCompiler::GenerateRestoreName(Label* label,
                                                     Handle<Name> name) {
   if (!label->is_unused()) {
     __ Bind(label);
     __ Mov(this->name(), Operand(name));
   }
 }
 
-
-void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) {
-  __ Mov(this->name(), Operand(name));
-}
-
-
-void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition,
-                                                   Register map_reg,
-                                                   Register scratch,
-                                                   Label* miss) {
-  Handle<WeakCell> cell = Map::WeakCellForMap(transition);
-  DCHECK(!map_reg.is(scratch));
-  __ LoadWeakValue(map_reg, cell, miss);
-  if (transition->CanBeDeprecated()) {
-    __ Ldrsw(scratch, FieldMemOperand(map_reg, Map::kBitField3Offset));
-    __ TestAndBranchIfAnySet(scratch, Map::Deprecated::kMask, miss);
-  }
-}
-
-
-void NamedStoreHandlerCompiler::GenerateConstantCheck(Register map_reg,
-                                                      int descriptor,
-                                                      Register value_reg,
-                                                      Register scratch,
-                                                      Label* miss_label) {
-  DCHECK(!map_reg.is(scratch));
-  DCHECK(!map_reg.is(value_reg));
-  DCHECK(!value_reg.is(scratch));
-  __ LoadInstanceDescriptors(map_reg, scratch);
-  __ Ldr(scratch,
-         FieldMemOperand(scratch, DescriptorArray::GetValueOffset(descriptor)));
-  __ Cmp(value_reg, scratch);
-  __ B(ne, miss_label);
-}
-
-void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(FieldType* field_type,
-                                                        Register value_reg,
-                                                        Label* miss_label) {
-  Register map_reg = scratch1();
-  Register scratch = scratch2();
-  DCHECK(!value_reg.is(map_reg));
-  DCHECK(!value_reg.is(scratch));
-  __ JumpIfSmi(value_reg, miss_label);
-  if (field_type->IsClass()) {
-    __ Ldr(map_reg, FieldMemOperand(value_reg, HeapObject::kMapOffset));
-    __ CmpWeakValue(map_reg, Map::WeakCellForMap(field_type->AsClass()),
-                    scratch);
-    __ B(ne, miss_label);
-  }
-}
-
 void PropertyHandlerCompiler::GenerateAccessCheck(
     Handle<WeakCell> native_context_cell, Register scratch1, Register scratch2,
     Label* miss, bool compare_native_contexts_only) {
   Label done;
   // Load current native context.
   __ Ldr(scratch1, NativeContextMemOperand());
   // Load expected native context.
   __ LoadWeakValue(scratch2, native_context_cell, miss);
   __ Cmp(scratch1, scratch2);
 
@@ skipping 115 matching lines @@
     __ B(&success);
 
     GenerateRestoreName(miss, name);
     if (IC::ICUseVector(kind())) PopVectorAndSlot();
     TailCallBuiltin(masm(), MissBuiltin(kind()));
 
     __ Bind(&success);
   }
 }
 
-
-void NamedLoadHandlerCompiler::GenerateLoadConstant(Handle<Object> value) {
-  // Return the constant value.
-  __ LoadObject(x0, value);
-  __ Ret();
-}
-
 void NamedLoadHandlerCompiler::GenerateLoadInterceptorWithFollowup(
     LookupIterator* it, Register holder_reg) {
   DCHECK(!AreAliased(receiver(), this->name(), scratch1(), scratch2(),
                      scratch3()));
   DCHECK(holder()->HasNamedInterceptor());
   DCHECK(!holder()->GetNamedInterceptor()->getter()->IsUndefined(isolate()));
 
   // Compile the interceptor call, followed by inline code to load the
   // property from further up the prototype chain if the call fails.
   // Check that the maps haven't changed.
@@ skipping 92 matching lines @@
   // Return the generated code.
   return GetCode(kind(), name);
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32