[turbofan] Introduce integer multiplication with overflow.

src/compiler/instruction-selector-impl.h

Index: src/compiler/instruction-selector-impl.h
diff --git a/src/compiler/instruction-selector-impl.h b/src/compiler/instruction-selector-impl.h
index 5e8680e1d8bf658d9b86552969dd0e449d4afb6f..63a4e9e2df799a6838f5862a4e28d0d60cd55844 100644
--- a/src/compiler/instruction-selector-impl.h
+++ b/src/compiler/instruction-selector-impl.h
@@ -139,6 +139,10 @@ class OperandGenerator {
     }
   }
 
+  InstructionOperand UseImmediate(int immediate) {
+    return sequence()->AddImmediate(Constant(immediate));
+  }
+
   InstructionOperand UseImmediate(Node* node) {
     return sequence()->AddImmediate(ToConstant(node));
   }