https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120424
--- Comment #11 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Alexandre Oliva <aol...@gcc.gnu.org>: https://gcc.gnu.org/g:7ce8a87f78122509334c5cfeebb624f634ccf96e commit r16-1718-g7ce8a87f78122509334c5cfeebb624f634ccf96e Author: Alexandre Oliva <ol...@adacore.com> Date: Thu Jun 26 21:01:19 2025 -0300 [lra] inactivate disabled fp2sp elimination [PR120424] Even after we disable the fp2sp elimination when it is the active elimination for the fp, spilling might use it before update_reg_eliminate runs and inactivates it for good. If it is used, update_reg_eliminate will fail the check that fp2sp was not used. Since we keep track of uses of this specific elimination, and lra_update_fp2sp_elimination checks it before disabling it, we know it hasn't been used, so we can inactivate it without any ill effects. This fixes the pr118591-1.c avr-none regression exposed by the PR120424 fix. for gcc/ChangeLog PR rtl-optimization/120424 * lra-eliminations.cc (lra_update_fp2sp_elimination): Inactivate the unused fp2sp elimination right away.
