[turbofan] Introduce integer multiplication with overflow.

src/compiler/instruction-selector-impl.h

 // 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.
 
 #ifndef V8_COMPILER_INSTRUCTION_SELECTOR_IMPL_H_
 #define V8_COMPILER_INSTRUCTION_SELECTOR_IMPL_H_
 
 #include "src/compiler/instruction.h"
 #include "src/compiler/instruction-selector.h"
 #include "src/compiler/linkage.h"
@@ skipping 121 matching lines @@
     MachineRepresentation rep = InstructionSequence::DefaultRepresentation();
     if (location.IsRegister()) {
       return ExplicitOperand(LocationOperand::REGISTER, rep,
                              location.AsRegister());
     } else {
       return ExplicitOperand(LocationOperand::STACK_SLOT, rep,
                              location.GetLocation());
     }
   }
 
+  InstructionOperand UseImmediate(int immediate) {
+    return sequence()->AddImmediate(Constant(immediate));
+  }
+
   InstructionOperand UseImmediate(Node* node) {
     return sequence()->AddImmediate(ToConstant(node));
   }
 
   InstructionOperand UseNegatedImmediate(Node* node) {
     return sequence()->AddImmediate(ToNegatedConstant(node));
   }
 
   InstructionOperand UseLocation(Node* node, LinkageLocation location) {
     return Use(node, ToUnallocatedOperand(location, GetVReg(node)));
@@ skipping 245 matching lines @@
                                  // or mode_ == kFlags_set.
   BasicBlock* true_block_;       // Only valid if mode_ == kFlags_branch.
   BasicBlock* false_block_;      // Only valid if mode_ == kFlags_branch.
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_SELECTOR_IMPL_H_