[PATCH] D14588: [X86][SSE] Transform truncation from v8i32/v16i32 to v8i8/v16i8 into bitand and X86ISD::PACKUS operations during DAG combine.

[Cong Hou via llvm-commits]

congh updated this revision to Diff 41424.
congh added a comment.

Stop using SHUFP as it is for floating points and can cause domain switch.

Also update the test case by adding AVX512 test and v16i64 to v16i8 truncation.


http://reviews.llvm.org/D14588

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/vector-trunc.ll

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