On Thu, 2024-01-04 at 14:32 -0800, Palmer Dabbelt wrote:
> > +proc check_effective_target_ifn_copysign { } {
> > + return [check_cached_effective_target_indexed ifn_copysign {
> > + expr {
> > + (([istarget i?86-*-*] || [istarget x86_64-*-*])
> > + && [is-effective-target sse])
> > + || ([istarget loongarch*-*-*] && [check_effective_target_loongarch_sx])
LoongArch has [scalar FP copysign][1] too.
[1]:https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#_fscaleblogbcopysign_sd
> > + || ([istarget powerpc*-*-*]
> > + && ![istarget powerpc-*-linux*paired*])
> > + || [istarget alpha*-*-*]
> > + || [istarget aarch64*-*-*]
> > + || [is-effective-target arm_neon]
> > + || ([istarget s390*-*-*]
> > + && [check_effective_target_s390_vx])
> > + || ([istarget riscv*-*-*]
> > + && [check_effective_target_riscv_v])
>
> Unless I'm missing something, we have copysign in the scalar
> floating-point ISAs as well. So I think this should be
>
> || ([istarget riscv*-*-*]
> && [check_effective_target_hard_float])
--
Xi Ruoyao <xry...@xry111.site>
School of Aerospace Science and Technology, Xidian University
