[turbofan] Add support for Int32SubWithOverflow.

src/compiler/x64/instruction-selector-x64.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.
 
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
@@ skipping 381 matching lines @@
     VisitBinop(selector, node, sub_opcode, false);
   }
 }
 
 
 void InstructionSelector::VisitInt32Sub(Node* node) {
   VisitSub<int32_t>(this, node, kX64Sub32, kX64Neg32);
 }
 
 
+void InstructionSelector::VisitInt32SubWithOverflow(Node* node) {
+  VisitBinopWithOverflow(this, node, kX64Sub32);
+}
+
+
 void InstructionSelector::VisitInt64Sub(Node* node) {
   VisitSub<int64_t>(this, node, kX64Sub, kX64Neg);
 }
 
 
 static void VisitMul(InstructionSelector* selector, Node* node,
                      ArchOpcode opcode) {
   X64OperandGenerator g(selector);
   Node* left = node->InputAt(0);
   Node* right = node->InputAt(1);
@@ skipping 313 matching lines @@
     ASSERT(deoptimization == NULL && continuation == NULL);
     Emit(kPopStack | MiscField::encode(buffer.pushed_count), NULL);
   }
 }
 
 #endif
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8