cache dereferenced iterators
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108132 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp
index b9fcfd5..0b48a8f 100644
--- a/lib/Transforms/Utils/Local.cpp
+++ b/lib/Transforms/Utils/Local.cpp
@@ -432,9 +432,11 @@
// Use that list to make another list of common predecessors of BB and Succ
BlockSet CommonPreds;
for (pred_iterator PI = pred_begin(Succ), PE = pred_end(Succ);
- PI != PE; ++PI)
- if (BBPreds.count(*PI))
- CommonPreds.insert(*PI);
+ PI != PE; ++PI) {
+ BasicBlock *P = *PI;
+ if (BBPreds.count(P))
+ CommonPreds.insert(P);
+ }
// Shortcut, if there are no common predecessors, merging is always safe
if (CommonPreds.empty())