[turbofan] Use assembler->LoadMap().

src/code-stubs.cc

 // Copyright 2012 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.
 
 #include "src/code-stubs.h"
 
 #include <sstream>
 
 #include "src/bootstrapper.h"
 #include "src/code-factory.h"
@@ skipping 493 matching lines @@
 
   Node* result = assembler->AllocateHeapNumber();
   assembler->Return(result);
 }
 
 #define SIMD128_GEN_ASM(TYPE, Type, type, lane_count, lane_type)            \
   void Allocate##Type##Stub::GenerateAssembly(CodeStubAssembler* assembler) \
       const {                                                               \
     compiler::Node* result =                                                \
         assembler->Allocate(Simd128Value::kSize, CodeStubAssembler::kNone); \
-    compiler::Node* map_offset =                                            \
-        assembler->IntPtrConstant(HeapObject::kMapOffset - kHeapObjectTag); \
-    compiler::Node* map = assembler->IntPtrAdd(result, map_offset);         \
+    compiler::Node* map = assembler->LoadMap(result);                       \
     assembler->StoreNoWriteBarrier(                                         \
         MachineRepresentation::kTagged, map,                                \
         assembler->HeapConstant(isolate()->factory()->type##_map()));       \
     assembler->Return(result);                                              \
   }
 SIMD128_TYPES(SIMD128_GEN_ASM)
 #undef SIMD128_GEN_ASM
 
 void StringLengthStub::GenerateAssembly(CodeStubAssembler* assembler) const {
   compiler::Node* value = assembler->Parameter(0);
@@ skipping 64 matching lines @@
         }
 
         assembler->Bind(&if_notoverflow);
         var_result.Bind(assembler->Projection(0, pair));
         assembler->Goto(&end);
       }
 
       assembler->Bind(&if_rhsisnotsmi);
       {
         // Load the map of {rhs}.
-        Node* rhs_map = assembler->LoadObjectField(rhs, HeapObject::kMapOffset);
+        Node* rhs_map = assembler->LoadMap(rhs);
 
         // Check if the {rhs} is a HeapNumber.
         Label if_rhsisnumber(assembler),
             if_rhsisnotnumber(assembler, Label::kDeferred);
         Node* number_map = assembler->HeapNumberMapConstant();
         assembler->Branch(assembler->WordEqual(rhs_map, number_map),
                           &if_rhsisnumber, &if_rhsisnotnumber);
 
         assembler->Bind(&if_rhsisnumber);
         {
@@ skipping 4435 matching lines @@
   if (type->Is(Type::UntaggedPointer())) {
     return Representation::External();
   }
 
   DCHECK(!type->Is(Type::Untagged()));
   return Representation::Tagged();
 }
 
 }  // namespace internal
 }  // namespace v8