https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115138
--- Comment #9 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Richard Biener from comment #8) > I've pushed a fix for PR115137, it's likely this fixes also this bug. unfortunately, not; at least, on my fastest x86 machine (AVX512) - the fail is the same (different CSWTCH.xxx numbers between the stage1 compiler and the stage2 - the numbers are unchanged with the r15-753 [.154 and .155 respectively]). I don't expect the machine to make any difference - and I saw that this was also reported by at least one person for Linux too (although bootstrapping with O3, I think).