fix const correctness, BB is const, so its predecessors are too

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43780 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/CodeGenPrepare.cpp b/lib/Transforms/Scalar/CodeGenPrepare.cpp
index 0dad42f8e21dfb8aadb3010c4e7797593e05e4b3..e4a17b77230472c0fe38ddb9fe30f38f2f7a5b35 100644 (file)
--- a/lib/Transforms/Scalar/CodeGenPrepare.cpp
+++ b/lib/Transforms/Scalar/CodeGenPrepare.cpp
@@ -155,7 +155,7 @@ bool CodeGenPrepare::CanMergeBlocks(const BasicBlock *BB,
   if (!DestBBPN) return true;  // no conflict.
   
   // Collect the preds of BB.
-  SmallPtrSet<BasicBlock*, 16> BBPreds;
+  SmallPtrSet<const BasicBlock*, 16> BBPreds;
   if (const PHINode *BBPN = dyn_cast<PHINode>(BB->begin())) {
     // It is faster to get preds from a PHI than with pred_iterator.
     for (unsigned i = 0, e = BBPN->getNumIncomingValues(); i != e; ++i)