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| author | Dan Gohman <gohman@apple.com> | 2010-04-14 16:08:56 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-04-14 16:08:56 +0000 |
| commit | 65de3d140d22d74859d85c50c1fe45709b0bbc11 (patch) | |
| tree | 172a393c4f529a68aea498b3ef654c3fd0c4dcdd /llvm/lib/Analysis | |
| parent | 4083e9afaf41f9e0e4b515948ff6160091007cea (diff) | |
| download | bcm5719-llvm-65de3d140d22d74859d85c50c1fe45709b0bbc11.tar.gz bcm5719-llvm-65de3d140d22d74859d85c50c1fe45709b0bbc11.zip | |
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llvm-svn: 101248
Diffstat (limited to 'llvm/lib/Analysis')
| -rw-r--r-- | llvm/lib/Analysis/ScalarEvolution.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp index a9a444f93a2..b8bcdd41654 100644 --- a/llvm/lib/Analysis/ScalarEvolution.cpp +++ b/llvm/lib/Analysis/ScalarEvolution.cpp @@ -4634,6 +4634,8 @@ ScalarEvolution::HowFarToNonZero(const SCEV *V, const Loop *L) { /// getLoopPredecessor - If the given loop's header has exactly one unique /// predecessor outside the loop, return it. Otherwise return null. +/// This is less strict that the loop "preheader" concept, which requires +/// the predecessor to have only one single successor. /// BasicBlock *ScalarEvolution::getLoopPredecessor(const Loop *L) { BasicBlock *Header = L->getHeader(); |
