fix imul(reg, op, imm) emission on x64

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 956 matching lines @@
   }
 }
 
 
 void Assembler::emit_imul(Register dst, const Operand& src, Immediate imm,
                           int size) {
   EnsureSpace ensure_space(this);
   emit_rex(dst, src, size);
   if (is_int8(imm.value_)) {
     emit(0x6B);
+    emit_operand(dst, src);
+    emit(imm.value_);
   } else {
     emit(0x69);
+    emit_operand(dst, src);
+    emitl(imm.value_);
   }
-  emit_operand(dst, src);
-  emit(imm.value_);
 }
 
 
 void Assembler::emit_inc(Register dst, int size) {
   EnsureSpace ensure_space(this);
   emit_rex(dst, size);
   emit(0xFF);
   emit_modrm(0x0, dst);
 }
 
@@ skipping 2069 matching lines @@
 
 
 bool RelocInfo::IsInConstantPool() {
   return false;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64