https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94852
Xi Ruoyao <xry111 at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |xry111 at gcc dot gnu.org
--- Comment #9 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #8)
> The documentation has been improved slightly:
> https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html#index-ffloat-store
>
> To mention that -fexcess-precision=standard should be used instead:
>
> Do not store floating-point variables in registers, and inhibit other
> options that might change whether a floating-point value is taken from a
> register or memory. This option has generally been subsumed by
> -fexcess-precision=standard, which is more general. If you do use
> -ffloat-store, you may need to modify your program to explicitly store
> intermediate computations in temporary variables since -ffloat-store handles
> rounding to IEEE format only on assignments and not casts as
> -fexcess-precision=standard does.
Is there any point to use -ffloat-store instead of -fexcess-precision=standard
as the latter is supported now?
