| commit | c6219bad2e6df66a8eb7aca8edcc56bc47101f39 | [log] [tgz] |
|---|---|---|
| author | David Majnemer <david.majnemer@gmail.com> | Sat Aug 30 06:18:20 2014 +0000 |
| committer | David Majnemer <david.majnemer@gmail.com> | Sat Aug 30 06:18:20 2014 +0000 |
| tree | 64b8da30bb1eb104ab01003a5d215a7f7038e922 | |
| parent | bcbae3d68099b2f3031168fa1528fe11ce0916cf [diff] |
InstCombine: Try harder to combine icmp instructions consider: (and (icmp X, Y), (and Z, (icmp A, B))) It may be possible to combine (icmp X, Y) with (icmp A, B). If we successfully combine, create an 'and' instruction with Z. This fixes PR20814. N.B. There is room for improvement after this change but I'm not convinced it's worth chasing yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216814 91177308-0d34-0410-b5e6-96231b3b80d8