| commit | dfec7f8eea24c17ebc1489351edbf6804cf858ca | [log] [tgz] |
|---|---|---|
| author | Sanjay Patel <spatel@rotateright.com> | Thu Sep 03 15:03:19 2015 +0000 |
| committer | Sanjay Patel <spatel@rotateright.com> | Thu Sep 03 15:03:19 2015 +0000 |
| tree | 9f0ab91136eea90c6531909bf84a6d76fba6699a | |
| parent | 6f610e174b0391913be5610ec4631e6e1f0e04d1 [diff] |
check for fastness before merging in DAGCombiner::MergeConsecutiveStores() Use and check the 'IsFast' optional parameter to TLI.allowsMemoryAccess() any time we have a merged access candidate. Without this patch, we were generating unaligned 16-byte (SSE) memops for x86 targets where those accesses are slow. This change was mentioned in: http://reviews.llvm.org/D10662 and http://reviews.llvm.org/D10905 and will help solve PR21711. Differential Revision: http://reviews.llvm.org/D12573 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246771 91177308-0d34-0410-b5e6-96231b3b80d8