cache dereferenced iterators
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108131 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/TailDuplication.cpp b/lib/Transforms/Scalar/TailDuplication.cpp
index 2306a77..febc872 100644
--- a/lib/Transforms/Scalar/TailDuplication.cpp
+++ b/lib/Transforms/Scalar/TailDuplication.cpp
@@ -206,13 +206,14 @@
// there is only one other pred, get it, otherwise we can't handle it.
PI = pred_begin(DstBlock); PE = pred_end(DstBlock);
BasicBlock *DstOtherPred = 0;
- if (*PI == SrcBlock) {
+ BasicBlock *P = *PI;
+ if (P == SrcBlock) {
if (++PI == PE) return 0;
- DstOtherPred = *PI;
+ DstOtherPred = P;
if (++PI != PE) return 0;
} else {
- DstOtherPred = *PI;
- if (++PI == PE || *PI != SrcBlock || ++PI != PE) return 0;
+ DstOtherPred = P;
+ if (++PI == PE || P != SrcBlock || ++PI != PE) return 0;
}
// We can handle two situations here: "if then" and "if then else" blocks. An
diff --git a/lib/Transforms/Scalar/TailRecursionElimination.cpp b/lib/Transforms/Scalar/TailRecursionElimination.cpp
index a018130..7403e37 100644
--- a/lib/Transforms/Scalar/TailRecursionElimination.cpp
+++ b/lib/Transforms/Scalar/TailRecursionElimination.cpp
@@ -476,10 +476,11 @@
// it will not show up as a predecessor.
for (pred_iterator PI = pred_begin(OldEntry), PE = pred_end(OldEntry);
PI != PE; ++PI) {
- if (*PI == &F->getEntryBlock())
- AccPN->addIncoming(AccumulatorRecursionEliminationInitVal, *PI);
+ BasicBlock *P = *PI;
+ if (P == &F->getEntryBlock())
+ AccPN->addIncoming(AccumulatorRecursionEliminationInitVal, P);
else
- AccPN->addIncoming(AccPN, *PI);
+ AccPN->addIncoming(AccPN, P);
}
// Add an incoming argument for the current block, which is computed by our