[PATCH] D68432: [X86] Add DAG combine to form saturating VTRUNCUS/VTRUNCS from VTRUNC

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: RKSimon, spatel.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

We already do this for ISD::TRUNCATE, but we can do the same for X86ISD::VTRUNC


https://reviews.llvm.org/D68432

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/avx512-trunc.ll
  llvm/test/CodeGen/X86/masked_store_trunc_ssat.ll
  llvm/test/CodeGen/X86/masked_store_trunc_usat.ll
  llvm/test/CodeGen/X86/vector-trunc-packus.ll
  llvm/test/CodeGen/X86/vector-trunc-ssat.ll
  llvm/test/CodeGen/X86/vector-trunc-usat.ll

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