[PATCH, rs6000] Disable gimple fold for float or double vec_minmax when fast-math is not set

[David Edelsohn]

On Mon, Nov 1, 2021 at 10:40 PM HAO CHEN GUI <guihaoc@linux.ibm.com> wrote:
>
> David,
>
>     My patch file was broken. I am sorry for it.  Here is the correct one. Thanks a lot.
>
> ChangeLog
>
> 2021-11-01 Haochen Gui <guihaoc@linux.ibm.com>
>
> gcc/
>         * config/rs6000/rs6000-call.c (rs6000_gimple_fold_builtin): Disable
>         gimple fold for VSX_BUILTIN_XVMINDP, ALTIVEC_BUILTIN_VMINFP,
>         VSX_BUILTIN_XVMAXDP, ALTIVEC_BUILTIN_VMAXFP when fast-math is not
>         set.
>
> gcc/testsuite/
>         * gcc.target/powerpc/vec-minmax-1.c: New test.
>         * gcc.target/powerpc/vec-minmax-2.c: Likewise.

This is okay.

The default DejaGNU test action is compile, but it's a good idea to
include the dg-do line to be clear and document the intention.

Thanks, David