https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110313
--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Philipp Tomsich <ptoms...@gcc.gnu.org>: https://gcc.gnu.org/g:893883f2f8f56984209c6ed210ee992ff71a14b0 commit r14-2165-g893883f2f8f56984209c6ed210ee992ff71a14b0 Author: Manolis Tsamis <manolis.tsa...@vrull.eu> Date: Tue Jun 20 16:23:52 2023 +0200 cprop_hardreg: fix ORIGINAL_REGNO/REG_ATTRS/REG_POINTER handling Fixes: 6a2e8dcbbd4bab3 Propagation for the stack pointer in regcprop was enabled in 6a2e8dcbbd4bab3, but set ORIGINAL_REGNO/REG_ATTRS/REG_POINTER for stack_pointer_rtx which caused regression (e.g., PR 110313, PR 110308). This fix adds special handling for stack_pointer_rtx in the places where maybe_mode_change is called. This also adds an check in maybe_mode_change to return the stack pointer only when the requested mode matches the mode of stack_pointer_rtx. PR debug/110308 gcc/ChangeLog: * regcprop.cc (maybe_mode_change): Check stack_pointer_rtx mode. (maybe_copy_reg_attrs): New function. (find_oldest_value_reg): Use maybe_copy_reg_attrs. (copyprop_hardreg_forward_1): Ditto. gcc/testsuite/ChangeLog: * g++.dg/torture/pr110308.C: New test. Signed-off-by: Manolis Tsamis <manolis.tsa...@vrull.eu> Signed-off-by: Philipp Tomsich <philipp.toms...@vrull.eu>
