[turbofan] Introduce integer multiplication with overflow.

src/compiler/arm/instruction-scheduler-arm.cc

 // Copyright 2015 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-scheduler.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 12 matching lines @@
     case kArmTst:
     case kArmTeq:
     case kArmOrr:
     case kArmEor:
     case kArmSub:
     case kArmRsb:
     case kArmMul:
     case kArmMla:
     case kArmMls:
     case kArmSmmul:
+    case kArmSmull:
     case kArmSmmla:
     case kArmUmull:
     case kArmSdiv:
     case kArmUdiv:
     case kArmMov:
     case kArmMvn:
     case kArmBfc:
     case kArmUbfx:
     case kArmSbfx:
     case kArmSxtb:
@@ skipping 96 matching lines @@
 
 
 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
   // TODO(all): Add instruction cost modeling.
   return 1;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8