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[X86] Remove some unnecessary patterns for truncate with X86ISD::SELECT and undef...
authorCraig Topper <craig.topper@intel.com>
Tue, 19 Sep 2017 05:30:24 +0000 (05:30 +0000)
committerCraig Topper <craig.topper@intel.com>
Tue, 19 Sep 2017 05:30:24 +0000 (05:30 +0000)
commit33bc70e64dc602feb2bafaf363b0f5642001173d
tree768250998969ae3d49d527482845c830437750d9
parent570e4c977e83c46f8a9c74cefcc9057d571780fe
[X86] Remove some unnecessary patterns for truncate with X86ISD::SELECT and undef preserved source.

We canonicalize undef preserved sources to zero during intrinsic lowering.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313612 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86InstrAVX512.td