> OK. Presumably once this is applied Richi is going to look at the > higher level issues in the vectorizer which inhibit creating the HI/QI > vector popcounts? >
Yes, this is the prerequisite to look at the vectorization issue. I'll ask Hongtao to help check-in this patch. Thanks for the approval. Jeff Law <l...@redhat.com> 于2020年12月1日周二 上午12:17写道： > > > > On 11/11/20 6:54 PM, Hongyu Wang via Gcc-patches wrote: > > Hi, > > > > According to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97770, x86 > > backend need popcount<mode>2 expander so __builtin_popcount could be > > auto vectorized with AVX512BITALG/AVX512VPOPCNTDQ targets. > > > > For DImode the middle-end vectorizer could not generate expected code, > > and for QI/HImode there is no corresponding IFN, xfails are added for > > these tests. > > > > Bootstrap/regression test for x86 backend is OK. > > > > OK for master? > > > > gcc/ChangeLog > > > > PR target/97770 > > * gcc/config/i386/sse.md (popcount<mode>2): New expander > > for SI/DI vector modes. > > (popcount<mode>2): Likewise for QI/HI vector modes. > > > > gcc/testsuite/ChangeLog > > > > PR target/97770 > > * gcc.target/i386/avx512bitalg-pr97770-1.c: New test. > > * gcc.target/i386/avx512vpopcntdq-pr97770-1.c: Likewise. > > * gcc.target/i386/avx512vpopcntdq-pr97770-2.c: Likewise. > > * gcc.target/i386/avx512vpopcntdqvl-pr97770-1.c: Likewise. > > > > > > 0001-Add-popcount-mode-expander-to-enable-popcount-auto-v.patch > > > OK. Presumably once this is applied Richi is going to look at the > higher level issues in the vectorizer which inhibit creating the HI/QI > vector popcounts? > > Jeff >
