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| 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 | 6f8a8cd3933c07a1431b798599a1e6720bfcda28 (patch) | |
| tree | 33efa1083f81d0600127fc08d38b6aac0ff7d819 /lib/Analysis/BasicAliasAnalysis.cpp | |
| parent | b8151e3f0ea922dd36032c06f7cb80826e264b82 (diff) | |
| download | external_llvm-6f8a8cd3933c07a1431b798599a1e6720bfcda28.zip external_llvm-6f8a8cd3933c07a1431b798599a1e6720bfcda28.tar.gz external_llvm-6f8a8cd3933c07a1431b798599a1e6720bfcda28.tar.bz2 | |
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/Analysis/BasicAliasAnalysis.cpp')
0 files changed, 0 insertions, 0 deletions