[Bug testsuite/105349] [12 regression] gcc.target/powerpc/bswap-brw.c fails after r12-8221

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105349

--- Comment #13 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Ah, it needs check_no_compiler_messages_nocache in these tests.  Patch
attached.
Could you please test with it?