[turbofan] Also optimize unsigned division by constant.

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

 // 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.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/arm/macro-assembler-arm.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 230 matching lines @@
     }
     case kArmSmmul:
       __ smmul(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1));
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     case kArmSmmla:
       __ smmla(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1),
                i.InputRegister(2));
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
+    case kArmUmull:
+      __ umull(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0),
+               i.InputRegister(1), i.OutputSBit());
+      break;
     case kArmSdiv: {
       CpuFeatureScope scope(masm(), SUDIV);
       __ sdiv(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1));
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     }
     case kArmUdiv: {
       CpuFeatureScope scope(masm(), SUDIV);
       __ udiv(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1));
       DCHECK_EQ(LeaveCC, i.OutputSBit());
@@ skipping 681 matching lines @@
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8