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Add new Loop::hasExitBlock helper method

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5663 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-02-27 22:48:28 +00:00
parent a94837a28f
commit 6bc4281336
1 changed files with 9 additions and 0 deletions
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9
include/llvm/Analysis/LoopInfo.h
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@ -69,6 +69,15 @@ public:
///
unsigned getNumBackEdges() const;
/// hasExitBlock - Return true if the current loop has the specified block as
/// an exit block...
bool hasExitBlock(BasicBlock *BB) const {
for (unsigned i = 0, e = ExitBlocks.size(); i != e; ++i)
if (ExitBlocks[i] == BB)
return true;
return false;
}
/// getLoopPreheader - If there is a preheader for this loop, return it. A
/// loop has a preheader if there is only one edge to the header of the loop
/// from outside of the loop. If this is the case, the block branching to the