Add nuw attribute to inbounds GEPs where the expression used to form the
GEP is an addition of unsigned indices.
Relands #105496, which was reverted because it exposed a miscompilation
arising from #98608. This is now fixed by #106512.
When constructing vectors from elements, use poison instead of
undef as the base value. These literals always initialize all
elements (padding the remainder with zero), so that the choice
of base value does not affect semantics.
smmintrin.h uses __builtin_mffs, __builtin_mffsl, __builtin_mtfsf and
__builtin_set_fpscr_rn. This patch replaces the uses with ppc prefix
and implement the missing ones.
These headers used to be guarded only on PowerPC64 Linux or FreeBSD, but
they can also be enabled for AIX OS target since it's big-endian ready.
Reviewed By: shchenz
Differential Revision: https://reviews.llvm.org/D129461
These tests are dumped without optimization, which makes them too
lengthy and contain meaningless load/stores. Clean them up to prepare
for future headers update.
