GBuella added a comment. In https://reviews.llvm.org/D46742#1095658, @tkrupa wrote:
> There are four other similar intrinsics which convert to 128/256-bit vectors: > > __m128i _mm256_cvtepi32_epi8 (__m256i a) > __m128i _mm256_cvtepi64_epi16 (__m256i a) > __m128i _mm256_cvtepi64_epi8 (__m256i a) > __m128i _mm512_cvtepi64_epi8 (__m512i a) > > Can you also include them? Probably these should be possible, but e.g. with the _mm256_cvtepi32_epi8 case, I can only get this far: vpmovdw %ymm0, %xmm0 vpshufb .LCPI2_0(%rip), %xmm0, %xmm0 # xmm0 = xmm0[0,2,4,6,8,10,12,14],zero,zero,zero,zero,zero,zero,zero,zero vzeroupper retq While the expected result is a `vpmovdb` instruction, without the extra shuffling. Repository: rC Clang https://reviews.llvm.org/D46742 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
