| commit | 821bba7fda8acb85a173f731a09e6818fd0b58e2 | [log] [tgz] |
|---|---|---|
| author | Sanjay Patel <spatel@rotateright.com> | Sun Mar 01 00:09:35 2015 +0000 |
| committer | Sanjay Patel <spatel@rotateright.com> | Sun Mar 01 00:09:35 2015 +0000 |
| tree | 80f90f44051700c03787896a7b9b5f0cc8da0c8f | |
| parent | 74978345165881d2f59c0046445db4b414ef115c [diff] |
avoid infinite looping when folding vector multiplies of constants (PR22698) We were missing a check for the following fold in DAGCombiner: // fold (fmul (fmul x, c1), c2) -> (fmul x, (fmul c1, c2)) If 'x' is also a constant, then we shouldn't do anything. Otherwise, we could end up swapping the operands back and forth forever. This should fix: http://llvm.org/bugs/show_bug.cgi?id=22698 Differential Revision: http://reviews.llvm.org/D7917 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230884 91177308-0d34-0410-b5e6-96231b3b80d8