https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109505
--- Comment #15 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org>
---
(In reply to Jakub Jelinek from comment #13)
> (In reply to rsand...@gcc.gnu.org from comment #12)
> > (In reply to Andrew Pinski from comment #11)
> > > For bit_and/bit_ior, VECTOR_CST (I would assume).
> > Ah, yeah. But then I don't think a top-level POLY_INT_CST_P
> > cuts it. We'd have the same problem with VECTOR_CSTs containing
> > POLY_INT_CSTs.
> Do we really support that?
Sure. At least AIUI, VECTOR_CST can contain whatever constants the
associated scalar supports.
A specific example is:
#include <arm_sve.h>
svint32_t f() { return svdup_s32(svcntw()); }
which gives:
return { POLY_INT_CST [4, 4], ... };
https://godbolt.org/z/T1s3n5Pfx
