[x64] three operand imul supports first operand in memory location

src/compiler/x64/code-generator-x64.cc

Index: src/compiler/x64/code-generator-x64.cc
diff --git a/src/compiler/x64/code-generator-x64.cc b/src/compiler/x64/code-generator-x64.cc
index 0de838698bd75c081db0e3cb7dd26ee45a87882d..cdd35e276c8d956d166e14bafb0e91351a8fec7c 100644
--- a/src/compiler/x64/code-generator-x64.cc
+++ b/src/compiler/x64/code-generator-x64.cc
@@ -275,8 +275,7 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
         if (input.type == kRegister) {
           __ imull(i.OutputRegister(), input.reg, i.InputImmediate(1));
         } else {
-          __ movq(kScratchRegister, input.operand);
-          __ imull(i.OutputRegister(), kScratchRegister, i.InputImmediate(1));
+          __ imull(i.OutputRegister(), input.operand, i.InputImmediate(1));
         }
       } else {
         RegisterOrOperand input = i.InputRegisterOrOperand(1);
@@ -293,8 +292,7 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
         if (input.type == kRegister) {
           __ imulq(i.OutputRegister(), input.reg, i.InputImmediate(1));
         } else {
-          __ movq(kScratchRegister, input.operand);
-          __ imulq(i.OutputRegister(), kScratchRegister, i.InputImmediate(1));
+          __ imulq(i.OutputRegister(), input.operand, i.InputImmediate(1));
         }
       } else {
         RegisterOrOperand input = i.InputRegisterOrOperand(1);