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[X86] Clear KnownBits instead of reconstructing it. NFC
authorCraig Topper <craig.topper@gmail.com>
Sun, 30 Apr 2017 07:44:55 +0000 (07:44 +0000)
committerCraig Topper <craig.topper@gmail.com>
Sun, 30 Apr 2017 07:44:55 +0000 (07:44 +0000)
commit78c3b9ec3d90dbae67666966a7636ac9a4d19818
tree5aa17a39d3951d2bf85b374a25fc0181f67f200a
parentc6bea6e8689ba2394684d6ff66b94d31cb1f7012
[X86] Clear KnownBits instead of reconstructing it. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301767 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp