[PATCH] D79231: [X86] Custom legalize v16i64->v16i8 truncate with avx512.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Does anything need to be done for truncstore cases?



================
Comment at: llvm/lib/Target/X86/X86ISelLowering.cpp:36989
+    APInt TruncMask = OriginalDemandedBits.zext(SrcBitWidth);
+    if (SimplifyDemandedBits(Src, TruncMask, KnownOp, TLO, Depth + 1))
+      return true;
----------------
Handle DemandedElts as well?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D79231/new/

https://reviews.llvm.org/D79231