https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85048
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target| |x86_64-*-*, i?86-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-23
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
If there's a good specification of __builtin_convertvector it certainly makes
sense to support that in a compatible way for the generic vector extension.
It would need to be handled by tree-vect-generic.c lowering it to
VEC_PACK_* / VEC_UNPACK_* / VIEW_CONVERT (for noop) sequences.
I suppose this bug is about unoptimal code being generated currently.
If so please open an enhacement request for __builtin_convertvector.
