https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105231
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |segher at gcc dot gnu.org Component|target |rtl-optimization Keywords| |needs-bisection --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- As a quick guess combine eventually doesn't honor non-call EH and combines insns in a way that puts a trapping insn before another one. Could also be a x86 target specific pattern/splitter issue of course (not sure if passes are supposed to split blocks - a splitter definitely can't).