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| author | Duncan Sands <baldrick@free.fr> | 2011-02-01 08:50:33 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2011-02-01 08:50:33 +0000 |
| commit | 93c780288df9631d11f996b010b2212a8b44d4d3 (patch) | |
| tree | 90e14a9e3f0a19c1bafd39d2e969ad0d34246875 /lib/Analysis/ValueTracking.cpp | |
| parent | 7681c6da606efcc392f76b8acea8301cb5fc7a0a (diff) | |
Add a m_SignBit pattern for convenience.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124656 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 72b3f03a93..44c1b5326b 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp @@ -666,9 +666,7 @@ bool llvm::isPowerOfTwo(Value *V, const TargetData *TD, unsigned Depth) { // (signbit) >>l X is clearly a power of two if the one is not shifted off the // bottom. If it is shifted off the bottom then the result is undefined. - ConstantInt *CI; - if (match(V, m_LShr(m_ConstantInt(CI), m_Value())) && - CI->getValue().isSignBit()) + if (match(V, m_LShr(m_SignBit(), m_Value()))) return true; // The remaining tests are all recursive, so bail out if we hit the limit. |