[turbofan] Also optimize unsigned division by constant.

src/x64/assembler-x64.cc

 // Copyright 2012 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/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/macro-assembler.h"
@@ skipping 917 matching lines @@
 
 
 void Assembler::emit_imul(Register src, int size) {
   EnsureSpace ensure_space(this);
   emit_rex(src, size);
   emit(0xF7);
   emit_modrm(0x5, src);
 }
 
 
+void Assembler::emit_imul(const Operand& src, int size) {
+  EnsureSpace ensure_space(this);
+  emit_rex(src, size);
+  emit(0xF7);
+  emit_operand(0x5, src);
+}
+
+
 void Assembler::emit_imul(Register dst, Register src, int size) {
   EnsureSpace ensure_space(this);
   emit_rex(dst, src, size);
   emit(0x0F);
   emit(0xAF);
   emit_modrm(dst, src);
 }
 
 
 void Assembler::emit_imul(Register dst, const Operand& src, int size) {
@@ skipping 544 matching lines @@
 
 
 void Assembler::emit_repmovs(int size) {
   EnsureSpace ensure_space(this);
   emit(0xF3);
   emit_rex(size);
   emit(0xA5);
 }
 
 
-void Assembler::mul(Register src) {
+void Assembler::mull(Register src) {
+  EnsureSpace ensure_space(this);
+  emit_optional_rex_32(src);
+  emit(0xF7);
+  emit_modrm(0x4, src);
+}
+
+
+void Assembler::mull(const Operand& src) {
+  EnsureSpace ensure_space(this);
+  emit_optional_rex_32(src);
+  emit(0xF7);
+  emit_operand(0x4, src);
+}
+
+
+void Assembler::mulq(Register src) {
   EnsureSpace ensure_space(this);
   emit_rex_64(src);
   emit(0xF7);
   emit_modrm(0x4, src);
 }
 
 
 void Assembler::emit_neg(Register dst, int size) {
   EnsureSpace ensure_space(this);
   emit_rex(dst, size);
@@ skipping 1624 matching lines @@
 
 
 bool RelocInfo::IsInConstantPool() {
   return false;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64