PPC: [turbofan] Introduce integer multiplication with overflow.

src/compiler/ppc/instruction-scheduler-ppc.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 26 matching lines @@
     case kPPC_RotLeftAndClearRight64:
     case kPPC_Add:
     case kPPC_AddWithOverflow32:
     case kPPC_AddPair:
     case kPPC_AddDouble:
     case kPPC_Sub:
     case kPPC_SubWithOverflow32:
     case kPPC_SubPair:
     case kPPC_SubDouble:
     case kPPC_Mul32:
+    case kPPC_Mul32WithHigh32:
     case kPPC_Mul64:
     case kPPC_MulHigh32:
     case kPPC_MulHighU32:
     case kPPC_MulPair:
     case kPPC_MulDouble:
     case kPPC_Div32:
     case kPPC_Div64:
     case kPPC_DivU32:
     case kPPC_DivU64:
     case kPPC_DivDouble:
@@ skipping 87 matching lines @@
 
 
 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
   // TODO(all): Add instruction cost modeling.
   return 1;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8