Ping https://gcc.gnu.org/ml/gcc-patches/2017-11/msg02233.html
On Sat, 25 Nov 2017, Marc Glisse wrote:
Hello,
the way full masks are generated currently in avx2intrin.h is questionable:
opaque for the inline functions, weird/wrong for the macros.
It is possible we may want to add code so the constant mask with all ones may
be generated with vxorpd+vcmpeqpd instead of loading it from memory, but that
looks like something that should be decided globally, not in each instruction
that uses it.
Bootstrap+regtest on x86_64-pc-linux-gnu (skylake).
2017-11-27 Marc Glisse <marc.gli...@inria.fr>
PR target/80885
* config/i386/avx2intrin.h (_mm_i32gather_pd): Rewrite mask generation.
(_mm256_i32gather_pd): Likewise.
(_mm_i64gather_pd): Likewise.
(_mm256_i64gather_pd): Likewise.
(_mm_i32gather_ps): Likewise.
(_mm256_i32gather_ps): Likewise.
(_mm_i64gather_ps): Likewise.
(_mm256_i64gather_ps): Likewise.
--
Marc Glisse
