From: Chris Lattner <sabre@nondot.org>
Date: Sat, 18 Feb 2006 01:32:04 +0000 (+0000)
Subject: a previous patch completely disabled trivial unswitching, this fixees it.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=caf489353605905fce38b7033987010bad910b57;p=oota-llvm.git

a previous patch completely disabled trivial unswitching, this fixees it.
Thanks to nate for pointing this out :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26280 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp
index 25c16199b51..8713631c348 100644
--- a/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -168,7 +168,6 @@ static bool isTrivialLoopExitBlockHelper(Loop *L, BasicBlock *BB,
 static BasicBlock *isTrivialLoopExitBlock(Loop *L, BasicBlock *BB) {
   std::set<BasicBlock*> Visited;
   Visited.insert(L->getHeader());  // Branches to header are ok.
-  Visited.insert(BB);              // Don't revisit BB after we do.
   BasicBlock *ExitBB = 0;
   if (isTrivialLoopExitBlockHelper(L, BB, ExitBB, Visited))
     return ExitBB;