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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 | 3c9b5f394b1cb4008e782c807c094b872a760c29 (patch) | |
| tree | ea498cabb8d700ced26f462c18e33871f642c8ec /llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | |
| parent | 32e4c861c86e47d0d6da1631294c61117000c9bb (diff) | |
| download | bcm5719-llvm-3c9b5f394b1cb4008e782c807c094b872a760c29.tar.gz bcm5719-llvm-3c9b5f394b1cb4008e782c807c094b872a760c29.zip | |
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.
llvm-svn: 112861
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')
0 files changed, 0 insertions, 0 deletions
