[Bug tree-optimization/127853] x86 (non BMI): .CTZ(x, N) returns 32 when bsr insn result could be undefined

[vineetg at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127853

--- Comment #5 from Vineet Gupta <vineetg at gcc dot gnu.org> ---
That is exactly the patch i was going to follow up with: just wanted to have
some discussions here before posting them.

Thx for taking a look!.