[turbofan] Also optimize unsigned division by constant.

src/compiler/ia32/code-generator-ia32.cc

 // Copyright 2013 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/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 229 matching lines @@
     case kIA32Imul:
       if (HasImmediateInput(instr, 1)) {
         __ imul(i.OutputRegister(), i.InputOperand(0), i.InputInt32(1));
       } else {
         __ imul(i.OutputRegister(), i.InputOperand(1));
       }
       break;
     case kIA32ImulHigh:
       __ imul(i.InputRegister(1));
       break;
+    case kIA32UmulHigh:
+      __ mul(i.InputRegister(1));
+      break;
     case kIA32Idiv:
       __ cdq();
       __ idiv(i.InputOperand(1));
       break;
     case kIA32Udiv:
       __ Move(edx, Immediate(0));
       __ div(i.InputOperand(1));
       break;
     case kIA32Not:
       __ not_(i.OutputOperand());
@@ skipping 791 matching lines @@
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8