https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105257
--- Comment #14 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:4f18893fbd53205588c952856184367671b2a880 commit r9-10151-g4f18893fbd53205588c952856184367671b2a880 Author: Jakub Jelinek <ja...@redhat.com> Date: Tue Apr 19 18:58:59 2022 +0200 sparc: Preserve ORIGINAL_REGNO in epilogue_renumber [PR105257] The following testcase ICEs, because the pic register is (reg:DI 24 %i0 [109]) and is used in the delay slot of a return. We invoke epilogue_renumber and that changes it to (reg:DI 8 %o0) which no longer satisfies sparc_pic_register_p predicate, so we don't recognize the insn anymore. The following patch fixes that by preserving ORIGINAL_REGNO if specified, so we get (reg:DI 8 %o0 [109]) instead. 2022-04-19 Jakub Jelinek <ja...@redhat.com> PR target/105257 * config/sparc/sparc.c (epilogue_renumber): If ORIGINAL_REGNO, use gen_raw_REG instead of gen_rtx_REG and copy over also ORIGINAL_REGNO. Use return 0; instead of /* fallthrough */. * gcc.dg/pr105257.c: New test. (cherry picked from commit eeca2b8bd03f57c59c6cf48bf6b9bd6dc86924f6)
