[GlobalISel] Use Register. NFC
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 3fb1347..ed8bd25 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -6421,7 +6421,7 @@
       B.buildMul(NarrowTy, Src1Regs[DstIdx], Src2Regs[DstIdx]).getReg(0);
   DstRegs[DstIdx] = FactorSum;
 
-  unsigned CarrySumPrevDstIdx;
+  Register CarrySumPrevDstIdx;
   SmallVector<Register, 4> Factors;
 
   for (DstIdx = 1; DstIdx < DstParts; DstIdx++) {