[PATCH] D96609: [X86][AVX] Truncate vectors with PACKSS/PACKUS on AVX2 targets

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 added inline comments.


================
Comment at: llvm/test/CodeGen/X86/vector-reduce-and-bool.ll:559
+; AVX2-NEXT:    vpblendw {{.*#+}} ymm1 = ymm1[0],ymm2[1,2,3],ymm1[4],ymm2[5,6,7],ymm1[8],ymm2[9,10,11],ymm1[12],ymm2[13,14,15]
+; AVX2-NEXT:    vpblendw {{.*#+}} ymm0 = ymm0[0],ymm2[1,2,3],ymm0[4],ymm2[5,6,7],ymm0[8],ymm2[9,10,11],ymm0[12],ymm2[13,14,15]
+; AVX2-NEXT:    vpackusdw %ymm1, %ymm0, %ymm0
----------------
Worse?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D96609/new/

https://reviews.llvm.org/D96609