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| author | Dan Gohman <gohman@apple.com> | 2009-05-18 15:36:09 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-05-18 15:36:09 +0000 |
| commit | ab157b247e2e3089c4c3727cc2993c14bf8ab6ed (patch) | |
| tree | ff62a31ebe98ed44b0e664bbbc8489b486f40fba /include/llvm/Analysis | |
| parent | f8bc8e8ad3c5c50822ff96ce811629ff35026e3f (diff) | |
| download | external_llvm-ab157b247e2e3089c4c3727cc2993c14bf8ab6ed.zip external_llvm-ab157b247e2e3089c4c3727cc2993c14bf8ab6ed.tar.gz external_llvm-ab157b247e2e3089c4c3727cc2993c14bf8ab6ed.tar.bz2 | |
Make ScalarEvolution::isLoopGuardedByCond work even when the edge
entering a loop is a non-split critical edge.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72004 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Analysis')
| -rw-r--r-- | include/llvm/Analysis/ScalarEvolution.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/llvm/Analysis/ScalarEvolution.h b/include/llvm/Analysis/ScalarEvolution.h index a5534e8..d43d244 100644 --- a/include/llvm/Analysis/ScalarEvolution.h +++ b/include/llvm/Analysis/ScalarEvolution.h @@ -341,6 +341,10 @@ namespace llvm { BackedgeTakenInfo HowManyLessThans(const SCEV *LHS, const SCEV *RHS, const Loop *L, bool isSigned); + /// getLoopPredecessor - If the given loop's header has exactly one unique + /// predecessor outside the loop, return it. Otherwise return null. + BasicBlock *getLoopPredecessor(const Loop *L); + /// getPredecessorWithUniqueSuccessorForBB - Return a predecessor of BB /// (which may not be an immediate predecessor) which has exactly one /// successor from which BB is reachable, or null if no such block is |