| commit | 3a48b7c274c3924e191efb8e3a30dc24dc699ecb | [log] [tgz] |
|---|---|---|
| author | Craig Topper <craig.topper@intel.com> | Wed Mar 14 16:55:15 2018 +0000 |
| committer | Craig Topper <craig.topper@intel.com> | Wed Mar 14 16:55:15 2018 +0000 |
| tree | 9f7167a3f2d954e31666ab6e544d7d8e02c27dc5 | |
| parent | c2f88d9b7efa4227725d862217d2137672903f82 [diff] |
[X86] Teach X86TargetLowering::targetShrinkDemandedConstant to set non-demanded bits if it helps created an and mask that can be matched as a zero extend. I had to modify the bswap recognition to allow unshrunk masks to make this work. Fixes PR36689. Differential Revision: https://reviews.llvm.org/D44442 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@327530 91177308-0d34-0410-b5e6-96231b3b80d8