[Bug target/94368] [9 Regression] ICE in final_scan_insn_1, at final.c:3074(error: could not split insn) on aarch64-linux-gnu since r9-3744

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94368

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-8 branch has been updated by Andre Simoes Dias Vieira
<avie...@gcc.gnu.org>:

https://gcc.gnu.org/g:163e0d03f2cdc80de4968c4be4694cdaeaf47fcd

commit r8-10212-g163e0d03f2cdc80de4968c4be4694cdaeaf47fcd
Author: Andre Vieira <andre.simoesdiasvie...@arm.com>
Date:   Thu Apr 16 10:16:17 2020 +0100

    aarch64: Fix up aarch64_compare_and_swaphi pattern [PR94368]

    2020-04-16  Andre Vieira  <andre.simoesdiasvie...@arm.com>

            Backport from mainline
            2020-03-31  Jakub Jelinek  <ja...@redhat.com>

            PR target/94368
            * config/aarch64/constraints.md (Uph): New constraint.
            * config/aarch64/atomics.md (cas_short_expected_imm): New mode
attr.
            (aarch64_compare_and_swap<mode>): Use it instead of n in operand
2's
            constraint.

            * gcc.dg/pr94368.c: New test.