https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83396
--- Comment #61 from Alexandre Oliva <aoliva at gcc dot gnu.org> --- Created attachment 42885 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42885&action=edit expand labels before markers This patch fixes both ia64 problems. Basically, the ebb scheduler gets thoroughly confused by insns (even debug insns) outside BBs. There's no good reason for markers to be placed before RTL labels (or even gimple labels, but I won't delay the fix further while I work on that), and although I can't say I really meant to have them there, the little I did is proven to be not enough and a lot of complication for no good reason, so... I'll make sure we keep debug insns (and stmts) within normal BB boundaries, and review the few changes added to support that so as to revert them, if I can still identify them. I haven't yet tested that we don't otherwise get debug insns outside BBs, aside from successful compilation of the two ia64 preprocessed cases, so the cfgrtl.c chunk may have to go for now to enable bootstraps to complete. Please let me know if you bootstrap with it and it passes; and if it fails, please keep the preprocessed testcases coming my way ;-) Thanks!
