cache result of operator*
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107969 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 70a02b2..8b656dc 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -2128,26 +2128,27 @@
for (pred_iterator PI = pred_begin(CurrentBlock),
PE = pred_end(CurrentBlock); PI != PE; ++PI) {
+ BasicBlock *P = *PI;
// We're not interested in PRE where the block is its
// own predecessor, or in blocks with predecessors
// that are not reachable.
- if (*PI == CurrentBlock) {
+ if (P == CurrentBlock) {
NumWithout = 2;
break;
- } else if (!localAvail.count(*PI)) {
+ } else if (!localAvail.count(P)) {
NumWithout = 2;
break;
}
DenseMap<uint32_t, Value*>::iterator predV =
- localAvail[*PI]->table.find(ValNo);
- if (predV == localAvail[*PI]->table.end()) {
- PREPred = *PI;
+ localAvail[P]->table.find(ValNo);
+ if (predV == localAvail[P]->table.end()) {
+ PREPred = P;
++NumWithout;
} else if (predV->second == CurInst) {
NumWithout = 2;
} else {
- predMap[*PI] = predV->second;
+ predMap[P] = predV->second;
++NumWith;
}
}