[Bug ipa/102059] Incorrect always_inline diagnostic in LTO mode with #pragma GCC target("cpu=power10")

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102059

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note that x86 uses for example

  else if (caller_opts->x_ix86_fpmath != callee_opts->x_ix86_fpmath
           /* If the calle doesn't use FP expressions differences in
              ix86_fpmath can be ignored.  We are called from FEs
              for multi-versioning call optimization, so beware of
              ipa_fn_summaries not available.  */
           && (! ipa_fn_summaries
               || ipa_fn_summaries->get (callee_node) == NULL
               || ipa_fn_summaries->get (callee_node)->fp_expressions))
    ret = false;

I wonder if we need to give targets the ability to compute IPA inline
summary bits, like "uses HTM" or "uses intrinsics for ISA X", to
selectively ignore bits that are not actually used.

And as always my stance on "always_inline" is that we should give thumbs
up to inlining and let the user shoot itself in the foot if he likes to.