diff options
| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-10-01 18:17:39 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-10-01 18:17:39 +0000 |
| commit | 4f255ad6a0ce17f02c3149dd84ab3e7eeac6055d (patch) | |
| tree | 80dc0963072d4214138d0c9396907a3240b18375 /llvm/test | |
| parent | 836fa6dcfd2fa174abeb427b8d517f6b255aa7d3 (diff) | |
| download | bcm5719-llvm-4f255ad6a0ce17f02c3149dd84ab3e7eeac6055d.tar.gz bcm5719-llvm-4f255ad6a0ce17f02c3149dd84ab3e7eeac6055d.zip | |
[X86][AVX2] Simplify PACKUS combine test
Trying to use a AND mask is tricky as after legalization its nigh impossible for computeKnownBits to do anything with it
llvm-svn: 314630
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/X86/vector-shuffle-combining-avx2.ll | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/test/CodeGen/X86/vector-shuffle-combining-avx2.ll b/llvm/test/CodeGen/X86/vector-shuffle-combining-avx2.ll index bd1b23c45bd..69a6eb7effa 100644 --- a/llvm/test/CodeGen/X86/vector-shuffle-combining-avx2.ll +++ b/llvm/test/CodeGen/X86/vector-shuffle-combining-avx2.ll @@ -846,18 +846,18 @@ declare <32 x i8> @llvm.x86.avx2.packsswb(<16 x i16>, <16 x i16>) nounwind readn define <16 x i16> @shuffle_combine_packusdw_pshufb(<8 x i32> %a0, <8 x i32> %a1) { ; X32-LABEL: shuffle_combine_packusdw_pshufb: ; X32: # BB#0: -; X32-NEXT: vpand {{\.LCPI.*}}, %ymm0, %ymm0 +; X32-NEXT: vpsrld $16, %ymm0, %ymm0 ; X32-NEXT: vpackusdw %ymm0, %ymm0, %ymm0 ; X32-NEXT: vpshufb {{.*#+}} ymm0 = ymm0[6,7,4,5,2,3,0,1,6,7,4,5,2,3,0,1,16,17,18,19,20,21,22,23,22,23,20,21,18,19,16,17] ; X32-NEXT: retl ; ; X64-LABEL: shuffle_combine_packusdw_pshufb: ; X64: # BB#0: -; X64-NEXT: vpand {{.*}}(%rip), %ymm0, %ymm0 +; X64-NEXT: vpsrld $16, %ymm0, %ymm0 ; X64-NEXT: vpackusdw %ymm0, %ymm0, %ymm0 ; X64-NEXT: vpshufb {{.*#+}} ymm0 = ymm0[6,7,4,5,2,3,0,1,6,7,4,5,2,3,0,1,16,17,18,19,20,21,22,23,22,23,20,21,18,19,16,17] ; X64-NEXT: retq - %1 = and <8 x i32> %a0, <i32 255, i32 65535, i32 255, i32 65535, i32 255, i32 255, i32 255, i32 65535> + %1 = lshr <8 x i32> %a0, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16> %2 = tail call <16 x i16> @llvm.x86.avx2.packusdw(<8 x i32> %1, <8 x i32> %1) %3 = shufflevector <16 x i16> %2, <16 x i16> undef, <16 x i32> <i32 3, i32 2, i32 1, i32 0, i32 3, i32 2, i32 1, i32 0, i32 8, i32 9, i32 10, i32 11, i32 11, i32 10, i32 9, i32 8> ret <16 x i16> %3 |
