diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopUtils.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/LoopUtils.cpp | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopUtils.cpp b/llvm/lib/Transforms/Utils/LoopUtils.cpp index fe106e33bca..a5a305ef582 100644 --- a/llvm/lib/Transforms/Utils/LoopUtils.cpp +++ b/llvm/lib/Transforms/Utils/LoopUtils.cpp @@ -1321,13 +1321,12 @@ void llvm::deleteDeadLoop(Loop *L, DominatorTree *DT = nullptr, // Rewrite phis in the exit block to get their inputs from the Preheader // instead of the exiting block. - BasicBlock::iterator BI = ExitBlock->begin(); - while (PHINode *P = dyn_cast<PHINode>(BI)) { + for (PHINode &P : ExitBlock->phis()) { // Set the zero'th element of Phi to be from the preheader and remove all // other incoming values. Given the loop has dedicated exits, all other // incoming values must be from the exiting blocks. int PredIndex = 0; - P->setIncomingBlock(PredIndex, Preheader); + P.setIncomingBlock(PredIndex, Preheader); // Removes all incoming values from all other exiting blocks (including // duplicate values from an exiting block). // Nuke all entries except the zero'th entry which is the preheader entry. @@ -1335,13 +1334,12 @@ void llvm::deleteDeadLoop(Loop *L, DominatorTree *DT = nullptr, // below, to keep the indices valid for deletion (removeIncomingValues // updates getNumIncomingValues and shifts all values down into the operand // being deleted). - for (unsigned i = 0, e = P->getNumIncomingValues() - 1; i != e; ++i) - P->removeIncomingValue(e - i, false); + for (unsigned i = 0, e = P.getNumIncomingValues() - 1; i != e; ++i) + P.removeIncomingValue(e - i, false); - assert((P->getNumIncomingValues() == 1 && - P->getIncomingBlock(PredIndex) == Preheader) && + assert((P.getNumIncomingValues() == 1 && + P.getIncomingBlock(PredIndex) == Preheader) && "Should have exactly one value and that's from the preheader!"); - ++BI; } // Disconnect the loop body by branching directly to its exit. |
