[stubs] Gets rid of the Smi(Add/Sub)WithOverflow macros.

src/code-stub-assembler.cc

 // Copyright 2016 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-stub-assembler.h"
 #include "src/code-factory.h"
 #include "src/frames-inl.h"
 #include "src/frames.h"
 #include "src/ic/handler-configuration.h"
 #include "src/ic/stub-cache.h"
@@ skipping 278 matching lines @@
 
 Node* CodeStubAssembler::SmiToFloat64(Node* value) {
   return ChangeInt32ToFloat64(SmiToWord32(value));
 }
 
 Node* CodeStubAssembler::SmiAdd(Node* a, Node* b) {
   return BitcastWordToTaggedSigned(
       IntPtrAdd(BitcastTaggedToWord(a), BitcastTaggedToWord(b)));
 }
 
-Node* CodeStubAssembler::SmiAddWithOverflow(Node* a, Node* b) {
-  return IntPtrAddWithOverflow(BitcastTaggedToWord(a), BitcastTaggedToWord(b));
-}
-
 Node* CodeStubAssembler::SmiSub(Node* a, Node* b) {
   return BitcastWordToTaggedSigned(
       IntPtrSub(BitcastTaggedToWord(a), BitcastTaggedToWord(b)));
 }
 
-Node* CodeStubAssembler::SmiSubWithOverflow(Node* a, Node* b) {
-  return IntPtrSubWithOverflow(BitcastTaggedToWord(a), BitcastTaggedToWord(b));
-}
-
 Node* CodeStubAssembler::SmiEqual(Node* a, Node* b) {
   return WordEqual(BitcastTaggedToWord(a), BitcastTaggedToWord(b));
 }
 
 Node* CodeStubAssembler::SmiAbove(Node* a, Node* b) {
   return UintPtrGreaterThan(BitcastTaggedToWord(a), BitcastTaggedToWord(b));
 }
 
 Node* CodeStubAssembler::SmiAboveOrEqual(Node* a, Node* b) {
   return UintPtrGreaterThanOrEqual(BitcastTaggedToWord(a),
@@ skipping 7094 matching lines @@
     result.Bind(CallRuntime(Runtime::kInstanceOf, context, object, callable));
     Goto(&end);
   }
 
   Bind(&end);
   return result.value();
 }
 
 }  // namespace internal
 }  // namespace v8