[Bug target/120995] [15 regression] [RISC-V] ICE: unrecognizable insn UNSPEC_COMPARE_AND_SWAP with rv64gc_zabha_zacas

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120995

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-15 branch has been updated by Jeff Law <l...@gcc.gnu.org>:

https://gcc.gnu.org/g:8f93b00a241a242677a901812f1a12e8960a5dc2

commit r15-9962-g8f93b00a241a242677a901812f1a12e8960a5dc2
Author: Andreas Schwab <sch...@suse.de>
Date:   Tue Jul 8 07:32:17 2025 -0600

    [PATCH] riscv: allow zero in zacas subword atomic cas

    gcc:
            PR target/120995
            * config/riscv/sync.md (zacas_atomic_cas_value_strong<mode>):
            Allow op3 to be zero.

    gcc/testsuite:
            PR target/120995
            * gcc.target/riscv/amo/zabha-zacas-atomic-cas.c: New test.

    (cherry picked from commit 3fd638a9e5497dfdf00f1783d6e704af03fb44b0)