https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104459
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[9/10/11/12 Regression] |[9/10/11 Regression] |'-fcompare-debug' failure |'-fcompare-debug' failure |w/ -O2 -funswitch-loops |w/ -O2 -funswitch-loops |-fno-tree-dce |-fno-tree-dce --- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Fixed on the trunk. I'll prefer to wait quite a long before considering to backport this though.