[Bug target/91834] [10 Regression ] [AArch64] LSE atomics, warnings due to unpredictable behavior with strx and the same register for s and t

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91834

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Kyrylo Tkachov
<ktkac...@gcc.gnu.org>:

https://gcc.gnu.org/g:bb9156ede009cfb572ab98c64288de5b21a89c17

commit r9-8435-gbb9156ede009cfb572ab98c64288de5b21a89c17
Author: Kyrylo Tkachov <kyrylo.tkac...@arm.com>
Date:   Wed Apr 1 12:11:58 2020 +0100

    aarch64: Fix store-exclusive in load-operate LSE helpers

    2020-04-01  Kyrylo Tkachov  <kyrylo.tkac...@arm.com>

            Backport from mainline
            2019-09-25  Richard Henderson  <richard.hender...@linaro.org>

            PR target/91834
            * config/aarch64/lse.S (LDNM): Ensure STXR output does not
            overlap the inputs.