https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117814
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Andre Simoes Dias Vieira <avie...@gcc.gnu.org>: https://gcc.gnu.org/g:f42fd8e9335354f986d69b92ab66be07cc31bc7a commit r15-5798-gf42fd8e9335354f986d69b92ab66be07cc31bc7a Author: Andre Vieira <andre.simoesdiasvie...@arm.com> Date: Fri Nov 29 10:18:57 2024 +0000 arm, mve: Detect uses of vctp_vpr_generated inside subregs Address a problem we were having where we were missing on detecting uses of vctp_vpr_generated in the analysis for 'arm_attempt_dlstp_transform' because the use was inside a SUBREG and rtx_equal_p does not catch that. Using reg_overlap_mentioned_p is much more robust. gcc/ChangeLog: PR target/117814 * config/arm/arm.cc (arm_attempt_dlstp_transform): Use reg_overlap_mentioned_p instead of rtx_equal_p to detect uses of vctp_vpr_generated inside subregs. gcc/testsuite/ChangeLog: PR target/117814 * gcc.target/arm/mve/dlstp-invalid-asm.c (test10): Renamed to... (test10a): ... this. (test10b): Variation of test10a with a small change to trigger wrong codegen.
