https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113109
--- Comment #9 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Hans-Peter Nilsson <h...@gcc.gnu.org>: https://gcc.gnu.org/g:3d03630b123411340e52d05124cb0cacfa1fc8b0 commit r14-6817-g3d03630b123411340e52d05124cb0cacfa1fc8b0 Author: Hans-Peter Nilsson <h...@axis.com> Date: Sun Dec 24 00:10:32 2023 +0100 CRIS: Fix PR middle-end/113109; "throw" failing TL;DR: the "dse1" pass removed the eh-return-address store. The PA also marks its EH_RETURN_HANDLER_RTX as volatile, for the same reason, as does visum. See PR32769 - it's the same thing on PA. Conceptually, it's logical that stores to incoming args are optimized out on the return path or if no loads are seen - at least before epilogue expansion, when the subsequent load isn't seen in the RTL, as is the case for the "dse1" pass. I haven't looked into why this problem, that appeared for the PA already in 2007, was seen for CRIS only recently (with r14-6674-g4759383245ac97). PR middle-end/113109 * config/cris/cris.cc (cris_eh_return_handler_rtx): New function. * config/cris/cris-protos.h (cris_eh_return_handler_rtx): Prototype. * config/cris/cris.h (EH_RETURN_HANDLER_RTX): Redefine to call cris_eh_return_handler_rtx.
