[Bug c/126753] GCC emitting useless AND instruction when setting a bool from processor flags

contact at ivanchev dot net via Gcc-bugs <[email protected]> Sun, 09 Aug 2026 08:59:05 +0000

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126753

--- Comment #1 from Mihail Ivanchev <contact at ivanchev dot net> ---
Here is another sample showing a signed overflow through the OVERFLOW flag:

https://godbolt.org/z/73jW7q71c

P.S.:
I just noticed clang even emits a single ADD here.