Remove Manual combine-to

Author: AZero13

llvm/lib/Target/ARM/ARMISelLowering.cpp

@@ -20178,7 +20178,7 @@ bool ARMTargetLowering::targetShrinkDemandedConstant(
   // code won't do this, so we have to do it explicitly to avoid an infinite
   // loop in obscure cases.)
   if (ExpandedMask == ~0U)
-    return TLO.CombineTo(Op, Op.getOperand(0));
+    return false;
 
   auto IsLegalMask = [ShrunkMask, ExpandedMask](unsigned Mask) -> bool {
     return (ShrunkMask & Mask) == ShrunkMask && (~ExpandedMask & Mask) == 0;