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| author | Chad Rosier <mcrosier@apple.com> | 2011-06-14 22:29:10 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2011-06-14 22:29:10 +0000 |
| commit | 92bcd96bbcf42911a76570cc0974e513bc7f261d (patch) | |
| tree | f7aa5be2ae7bfc3418f06248d0efe73406e1648b /lib/Target/CBackend/CBackend.cpp | |
| parent | 1c61990b2daa77f3444eb2b6d8157cdc805ce22f (diff) | |
When pattern matching during instruction selection make sure shl x,1 is not
converted to add x,x if x is a undef. add undef, undef does not guarantee
that the resulting low order bit is zero.
Fixes <rdar://problem/9453156> and <rdar://problem/9487392>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133022 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/CBackend/CBackend.cpp')
0 files changed, 0 insertions, 0 deletions