[PATCH] D14108: AVX-512: Optimized "truncate" operation

[Elena Demikhovsky via llvm-commits]

delena created this revision.
delena added a reviewer: igorb.
delena added a subscriber: llvm-commits.
delena set the repository for this revision to rL LLVM.

The "truncate" operation is optimized for 256 to 128 vectors for targets without VLX.

Repository:
  rL LLVM

http://reviews.llvm.org/D14108

Files:
  ../lib/Target/X86/X86ISelLowering.cpp
  ../lib/Target/X86/X86InstrAVX512.td
  ../test/CodeGen/X86/avx512-trunc.ll
  ../test/CodeGen/X86/vector-lzcnt-128.ll

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