[turbofan] Also optimize unsigned division by constant.

src/arm64/macro-assembler-arm64-inl.h

 // 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.
 
 #ifndef V8_ARM64_MACRO_ASSEMBLER_ARM64_INL_H_
 #define V8_ARM64_MACRO_ASSEMBLER_ARM64_INL_H_
 
 #include <ctype.h>
 
 #include "src/globals.h"
@@ skipping 1108 matching lines @@
 
 void MacroAssembler::Smulh(const Register& rd,
                            const Register& rn,
                            const Register& rm) {
   DCHECK(allow_macro_instructions_);
   DCHECK(!rd.IsZero());
   smulh(rd, rn, rm);
 }
 
 
+void MacroAssembler::Umull(const Register& rd, const Register& rn,
+                           const Register& rm) {
+  DCHECK(allow_macro_instructions_);
+  DCHECK(!rd.IsZero());
+  umaddl(rd, rn, rm, xzr);
+}
+
+
 void MacroAssembler::Stnp(const CPURegister& rt,
                           const CPURegister& rt2,
                           const MemOperand& dst) {
   DCHECK(allow_macro_instructions_);
   stnp(rt, rt2, dst);
 }
 
 
 void MacroAssembler::Sxtb(const Register& rd, const Register& rn) {
   DCHECK(allow_macro_instructions_);
@@ skipping 560 matching lines @@
   // characters are reserved for controlling features of the instrumentation.
   DCHECK(isprint(marker_name[0]) && isprint(marker_name[1]));
 
   InstructionAccurateScope scope(this, 1);
   movn(xzr, (marker_name[1] << 8) | marker_name[0]);
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_MACRO_ASSEMBLER_ARM64_INL_H_