[all-commits] [llvm/llvm-project] af1508: [X86] Add test RUN lines to show cases where we us...

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: af15082af42020c155144103cb345ae54f02b39f
      https://github.com/llvm/llvm-project/commit/af15082af42020c155144103cb345ae54f02b39f
  Author: Craig Topper <craig.topper at gmail.com>
  Date:   2020-02-12 (Wed, 12 Feb 2020)

  Changed paths:
    M llvm/test/CodeGen/X86/vec-strict-cmp-128.ll
    M llvm/test/CodeGen/X86/vec-strict-cmp-256.ll
    M llvm/test/CodeGen/X86/vec-strict-cmp-sub128.ll

  Log Message:
  -----------
  [X86] Add test RUN lines to show cases where we use 512-bit vcmppd/ps with garbage upper bits for 128/256-bit strict_fsetcc

On KNL targets, we widen 128/256-bit strict_fsetcc nodes to
512-bits without forcing the upper bits to zero. This can cause
spurious exceptions due to garbage upper bits. This behavior was
inherited from the non-strict case where the spurious exception
isn't a problem.