[Bug tree-optimization/122615] `x&a ? (x&~a): (x|a)` -> x ^ a

[harald at gigawatt dot nl via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122615

Harald van Dijk <harald at gigawatt dot nl> changed:

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                 CC|                            |harald at gigawatt dot nl

--- Comment #1 from Harald van Dijk <harald at gigawatt dot nl> ---
f0 would only be valid to optimise if a is somehow known to only contain a
single bit: consider e.g. f0(1, 3) where it would produce incorrect results.