[Bug testsuite/106345] Some ppc64le tests fail with -mcpu=power9 -mtune=power9

[linkw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106345

--- Comment #9 from Kewen Lin <linkw at gcc dot gnu.org> ---
(In reply to Michael Meissner from comment #8)
> Note, the gcc.target/powerpc/pr92398.p9-.c test fails when the compiler is
> configured for either --with-cpu=power9 or --with-cpu=power10.  No
> --with-tune= was used in configuring either compiler.

Yeah, as comment #1, it's a different issue from the --with-tune issue, it's
due to empty TU in effective target checks.

The patch was posted at:
https://gcc.gnu.org/pipermail/gcc-patches/2022-July/598748.html