diff options
| author | Dan Gohman <gohman@apple.com> | 2010-09-02 21:18:42 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-09-02 21:18:42 +0000 |
| commit | 24bde5bce192119ee0fc4f94ef8757fd4031e5f6 (patch) | |
| tree | 33efa1083f81d0600127fc08d38b6aac0ff7d819 /lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | |
| parent | 8e741ed2fa16f46ab586bf3a54526cd9c2338c5b (diff) | |
Don't narrow the load and store in a load+twiddle+store sequence unless
there are clearly no stores between the load and the store. This fixes
this miscompile reported as PR7833.
This breaks the test/CodeGen/X86/narrow_op-2.ll optimization, which is
safe, but awkward to prove safe. Move it to X86's README.txt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112861 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')
0 files changed, 0 insertions, 0 deletions