[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 #2 from Vineet Gupta <vineetg at gcc dot gnu.org> ---
Created attachment 65809
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=65809&action=edit
test case