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Removed redundant assert and condition in APInt::SetBits #138038

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Merged
merged 5 commits into from
May 12, 2025
Merged

Removed redundant assert and condition in APInt::SetBits #138038

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b1749f1
removed redundant assert and condition in APInt::SetBits
liamsemeria Apr 30, 2025
85ccb4e
reinserted assert for lowBits in APInt::SetBits
liamsemeria May 1, 2025
e9097c7
removed redundant check for lowBits in APInt::SetBits
liamsemeria May 2, 2025
5da6a5f
Merge branch 'llvm:main' into SetBitsChanges
liamsemeria May 5, 2025
b36a066
removed unneeded lowBits assert in APInt::SetBits
liamsemeria May 7, 2025
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3 changes: 1 addition & 2 deletions 3 llvm/include/llvm/ADT/APInt.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1366,11 +1366,10 @@ class [[nodiscard]] APInt {
/// This function handles case when \p loBit <= \p hiBit.
void setBits(unsigned loBit, unsigned hiBit) {
assert(hiBit <= BitWidth && "hiBit out of range");
assert(loBit <= BitWidth && "loBit out of range");
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) {
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Did you mean to remove the redundant assert on line 1369?

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@liamsemeria liamsemeria May 6, 2025 •
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I did but I thought it was causing some windows test to fail when I pushed the change so I reverted it. I think the assert could still be helpful in some cases even though it's redundant.

uint64_t mask = WORDTYPE_MAX >> (APINT_BITS_PER_WORD - (hiBit - loBit));
mask <<= loBit;
if (isSingleWord())
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