[Bug target/55522] -funsafe-math-optimizations is unexpectedly harmful, especially w/ -shared

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|x86_64-*-*, i?86-*-*        |x86_64-*-*, i?86-*-*,
                   |                            |aarch64, alpha, arm, ia64,
                   |                            |loongarch, mips, sparc
           Keywords|                            |documentation

--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
I'll note that I can't find any documentation for this link-time behavior which
triggers for -Ofast, -ffast-math and -funsafe-math-optimizations but also
with -ffast-math -fno-unsafe-math-optimizations.

I've adjusted the list of affected targets.  What their crtfastmath.o actually
does would need to be determined, but it for sure will have the same spreading
effect.