diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/Local.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/Local.cpp | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp index cfe40f9..f3b8623 100644 --- a/llvm/lib/Transforms/Utils/Local.cpp +++ b/llvm/lib/Transforms/Utils/Local.cpp @@ -1023,7 +1023,6 @@ static void replaceUndefValuesInPhi(PHINode *PN, static bool CanRedirectPredsOfEmptyBBToSucc(BasicBlock *BB, BasicBlock *Succ, const SmallPtrSetImpl<BasicBlock *> &BBPreds, - const SmallPtrSetImpl<BasicBlock *> &SuccPreds, BasicBlock *&CommonPred) { // There must be phis in BB, otherwise BB will be merged into Succ directly @@ -1042,7 +1041,7 @@ CanRedirectPredsOfEmptyBBToSucc(BasicBlock *BB, BasicBlock *Succ, // Get the single common predecessor of both BB and Succ. Return false // when there are more than one common predecessors. - for (BasicBlock *SuccPred : SuccPreds) { + for (BasicBlock *SuccPred : predecessors(Succ)) { if (BBPreds.count(SuccPred)) { if (CommonPred) return false; @@ -1166,7 +1165,6 @@ bool llvm::TryToSimplifyUncondBranchFromEmptyBlock(BasicBlock *BB, return false; SmallPtrSet<BasicBlock *, 16> BBPreds(pred_begin(BB), pred_end(BB)); - SmallPtrSet<BasicBlock *, 16> SuccPreds(pred_begin(Succ), pred_end(Succ)); // The single common predecessor of BB and Succ when BB cannot be killed BasicBlock *CommonPred = nullptr; @@ -1175,9 +1173,8 @@ bool llvm::TryToSimplifyUncondBranchFromEmptyBlock(BasicBlock *BB, // Even if we can not fold BB into Succ, we may be able to redirect the // predecessors of BB to Succ. - bool BBPhisMergeable = - BBKillable || - CanRedirectPredsOfEmptyBBToSucc(BB, Succ, BBPreds, SuccPreds, CommonPred); + bool BBPhisMergeable = BBKillable || CanRedirectPredsOfEmptyBBToSucc( + BB, Succ, BBPreds, CommonPred); if ((!BBKillable && !BBPhisMergeable) || introduceTooManyPhiEntries(BB, Succ)) return false; @@ -1302,7 +1299,7 @@ bool llvm::TryToSimplifyUncondBranchFromEmptyBlock(BasicBlock *BB, // All predecessors of BB (except the common predecessor) will be moved to // Succ. Updates.reserve(Updates.size() + 2 * pred_size(BB) + 1); - + SmallPtrSet<BasicBlock *, 16> SuccPreds(pred_begin(Succ), pred_end(Succ)); for (auto *PredOfBB : predecessors(BB)) { // Do not modify those common predecessors of BB and Succ if (!SuccPreds.contains(PredOfBB)) |