[InstCombine] Change (add x, c) to (xor x, c) (#75129) (7be5dabb) · Commits · github.com / llvm / llvm-project

Unverified Commit 7be5dabb authored Dec 14, 2023 by

Fujun Han Committed by GitHub Dec 14, 2023

[InstCombine] Change (add x, c) to (xor x, c) (#75129)

Change (add x, c) to (xor x, c) iff c is constant and c equals the top bit of the demanded bits.
Alive2: https://alive2.llvm.org/ce/z/DKmkwF



---------

Signed-off-by: Peter Han <fujun.han@iluvatar.com>
Co-authored-by: Peter Han <fujun.han@iluvatar.com>

parent b97c5a95

Hide whitespace changes

Inline Side-by-side

Please register or to comment