[PATCH] D15675: AVX512: Fix TRUNCATE lowering vector to vector i1.

[Elena Demikhovsky via llvm-commits]

delena accepted this revision.
delena added a comment.
This revision is now accepted and ready to land.

LGTM


================
Comment at: lib/Target/X86/X86ISelLowering.cpp:13412
@@ +13411,3 @@
+    MVT ExtVT = MVT::getVectorVT(MVT::getIntegerVT(512/NumElts), NumElts);
+    In = DAG.getNode(ISD::SIGN_EXTEND, DL, ExtVT, In);
+    InVT = ExtVT;
----------------
Please add comments that you need SIGN_EXTEND from i8 to i16 because there is no SHIFT operation on byte level


Repository:
  rL LLVM

http://reviews.llvm.org/D15675