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authorOwen Anderson <resistor@mac.com>2006-07-19 05:48:45 +0000
committerOwen Anderson <resistor@mac.com>2006-07-19 05:48:45 +0000
commit10d9d9f27c28721228ca2ea57ae3430c60df3356 (patch)
tree15ad6d9ca3976f99022bbfa7d4e203cdd85a2854 /lib
parent2698a08c23828865c96adf48f7d6c5b5f616b521 (diff)
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Add an assertion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29199 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r--lib/Transforms/Scalar/LoopUnroll.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopUnroll.cpp b/lib/Transforms/Scalar/LoopUnroll.cpp
index 6f7df42..98b5b62 100644
--- a/lib/Transforms/Scalar/LoopUnroll.cpp
+++ b/lib/Transforms/Scalar/LoopUnroll.cpp
@@ -272,6 +272,8 @@ bool LoopUnroll::visitLoop(Loop *L) {
// Remove LCSSA Phis from the exit block
for (BasicBlock::iterator ExitInstr = LoopExit->begin();
PHINode* PN = dyn_cast<PHINode>(ExitInstr); ++ExitInstr) {
+ assert(PN->getNumIncomingValues() == 1
+ && "Block should only have one pred, so Phi's must be LCSSA");
PN->replaceAllUsesWith(PN->getOperand(0));
PN->eraseFromParent();
}