https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120638
--- Comment #9 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-15 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:f45c7c4425f5a62b0b1f3ee4395f347f2a57c541 commit r15-9834-gf45c7c4425f5a62b0b1f3ee4395f347f2a57c541 Author: Jakub Jelinek <ja...@redhat.com> Date: Thu Jun 12 20:22:39 2025 +0200 recip: Reset range info when replacing sqrt with rsqrt [PR120638] This pass reuses a SSA_NAME on the lhs of sqrt etc. call as lhs of .RSQRT etc. call. The following testcase is miscompiled since my recent ranger cast changes, because we compute (correct) range for sqrtf argument as well as result but then recip pass keeps using that range for the .RQSRT call which returns 1. / sqrt, so the function then returns 0.5f unconditionally. Note, on foo this is a regression from GCC 15, but on bar it regressed already with the r14-536 change. 2025-06-12 Jakub Jelinek <ja...@redhat.com> PR tree-optimization/120638 * tree-ssa-math-opts.cc (pass_cse_reciprocals::execute): Call reset_flow_sensitive_info on arg1. * gcc.dg/pr120638.c: New test. (cherry picked from commit 8804e5b5b127b27d099d0c361fa2161d0b13edef)
