removed redundant check for lowBits in APInt::SetBits

Author: liamsemeria

llvm/include/llvm/ADT/APInt.h

@@ -1370,8 +1370,7 @@ class [[nodiscard]] APInt {
     assert(loBit <= hiBit && "loBit greater than hiBit");
     if (loBit == hiBit)
       return;
-    if (loBit < APINT_BITS_PER_WORD && hiBit <= APINT_BITS_PER_WORD) {
-    //if (hiBit <= APINT_BITS_PER_WORD) {
+    if (hiBit <= APINT_BITS_PER_WORD) {
       uint64_t mask = WORDTYPE_MAX >> (APINT_BITS_PER_WORD - (hiBit - loBit));
       mask <<= loBit;
       if (isSingleWord())