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| author | Chris Lattner <sabre@nondot.org> | 2010-11-18 07:39:57 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-11-18 07:39:57 +0000 |
| commit | 12f7085027657957e08aea597b5c9fed44052969 (patch) | |
| tree | 2e5000711178fc8cbe0edd66ed6dea2af43fe6c3 /lib/Transforms/Scalar/MemCpyOptimizer.cpp | |
| parent | 245b7f6ec26a8d27c984da4cceb7cfc27abcba6b (diff) | |
| download | llvm-12f7085027657957e08aea597b5c9fed44052969.tar.gz llvm-12f7085027657957e08aea597b5c9fed44052969.tar.bz2 llvm-12f7085027657957e08aea597b5c9fed44052969.tar.xz | |
remove another pointless noalias check: M is a memcpy, so the
source and dest are known to not overlap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119692 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/MemCpyOptimizer.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/MemCpyOptimizer.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp index cab8bac0f9..ea29fca346 100644 --- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp +++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp @@ -691,8 +691,7 @@ bool MemCpyOpt::processMemCpyMemCpyDependence(MemCpyInst *M, MemCpyInst *MDep, // Finally, we have to make sure that the dest of the second does not // alias the source of the first. AliasAnalysis &AA = getAnalysis<AliasAnalysis>(); - if (!AA.isNoAlias(M->getRawDest(), MSize, MDep->getRawSource(), DepSize) || - !AA.isNoAlias(M->getRawDest(), MSize, M->getRawSource(), MSize)) + if (!AA.isNoAlias(M->getRawDest(), MSize, MDep->getRawSource(), DepSize)) return false; // If all checks passed, then we can transform these memcpy's |