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| author | Chris Lattner <sabre@nondot.org> | 2010-02-05 19:53:02 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-02-05 19:53:02 +0000 |
| commit | 74529826a70546d71c6558e9a3917244a87acfe9 (patch) | |
| tree | 40781a35873a4b901835fb705b958b974fc8c6f9 /lib/Transforms | |
| parent | 82ed17eb472102cb6711b832183ee4816ad9a656 (diff) | |
| download | external_llvm-74529826a70546d71c6558e9a3917244a87acfe9.zip external_llvm-74529826a70546d71c6558e9a3917244a87acfe9.tar.gz external_llvm-74529826a70546d71c6558e9a3917244a87acfe9.tar.bz2 | |
fix logical-select to invoke filecheck right, and fix hte instcombine
xform it is checking to actually pass. There is no need to match
m_SelectCst<0, -1> since instcombine canonicalizes that into not(sext).
Add matches for sext(not(x)) in addition to not(sext(x)).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95420 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineAndOrXor.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp index f79e4fa..f0ddfe3 100644 --- a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp +++ b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp @@ -1148,8 +1148,13 @@ static Instruction *MatchSelectFromAndOr(Value *A, Value *B, // ((cond?-1:0)&C) | (B&(cond?0:-1)) -> cond ? C : B. if (match(D, m_Not(m_SExt(m_Specific(Cond))))) return SelectInst::Create(Cond, C, B); + if (match(D, m_SExt(m_Not(m_Specific(Cond))))) + return SelectInst::Create(Cond, C, B); + // ((cond?-1:0)&C) | ((cond?0:-1)&D) -> cond ? C : D. - if (match(B, m_SelectCst<0, -1>(m_Specific(Cond)))) + if (match(B, m_Not(m_SExt(m_Specific(Cond))))) + return SelectInst::Create(Cond, C, D); + if (match(B, m_SExt(m_Not(m_Specific(Cond))))) return SelectInst::Create(Cond, C, D); return 0; } |