From: Dan Gohman Date: Thu, 5 Nov 2009 21:47:04 +0000 (+0000) Subject: LoopDeletion depends on loops having dedicated exits. X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=32cc5f47fa6a544bb77afcdc92c37ba32bfc0c4f;p=oota-llvm.git LoopDeletion depends on loops having dedicated exits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86180 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/lib/Transforms/Scalar/LoopDeletion.cpp b/lib/Transforms/Scalar/LoopDeletion.cpp index 866d8b41d9d..48817ab9d5a 100644 --- a/lib/Transforms/Scalar/LoopDeletion.cpp +++ b/lib/Transforms/Scalar/LoopDeletion.cpp @@ -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())