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LoopDeletion depends on loops having dedicated exits.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86180 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-11-05 21:47:04 +00:00
parent f4e82d1f2e
commit 32cc5f47fa
1 changed files with 4 additions and 0 deletions
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4
lib/Transforms/Scalar/LoopDeletion.cpp
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@ -115,6 +115,10 @@ bool LoopDeletion::runOnLoop(Loop* L, LPPassManager& LPM) {
if (!preheader)
return false;
// If LoopSimplify form is not available, stay out of trouble.
if (!L->hasDedicatedExits())
return false;
// We can't remove loops that contain subloops. If the subloops were dead,
// they would already have been removed in earlier executions of this pass.
if (L->begin() != L->end())