[turbofan] x64 lea multiplication matching

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 fdf63855d59cac64d5f9083657a8688d769c4347..79e853191c49e91cb8003e9166ce2f1db2a0a6bf 100644
--- a/src/compiler/x64/code-generator-x64.cc
+++ b/src/compiler/x64/code-generator-x64.cc
@@ -174,6 +174,16 @@ class X64OperandConverter : public InstructionOperandConverter {
         int32_t disp = InputInt32(NextOffset(offset));
         return Operand(base, disp);
       }
+      case kMode_MX1:
+      case kMode_MX2:
+      case kMode_MX4:
+      case kMode_MX8: {
+        Register base = InputRegister(NextOffset(offset));
+        Register index = base;
+        ScaleFactor scale = ScaleFor(kMode_MX1, mode);
+        int32_t disp = 0;
+        return Operand(base, index, scale, disp);
+      }
       case kMode_MR1:
       case kMode_MR2:
       case kMode_MR4:
@@ -652,6 +662,12 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
         __ movsd(operand, i.InputDoubleRegister(index));
       }
       break;
+    case kX64Lea32:
+      __ leal(i.OutputRegister(), i.MemoryOperand());
+      break;
+    case kX64Lea:
+      __ leaq(i.OutputRegister(), i.MemoryOperand());
+      break;
     case kX64Push:
       if (HasImmediateInput(instr, 0)) {
         __ pushq(i.InputImmediate(0));