diff options
Diffstat (limited to 'lib/Transforms/Utils/BreakCriticalEdges.cpp')
| -rw-r--r-- | lib/Transforms/Utils/BreakCriticalEdges.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/lib/Transforms/Utils/BreakCriticalEdges.cpp b/lib/Transforms/Utils/BreakCriticalEdges.cpp index 76ebb9f..80bd516 100644 --- a/lib/Transforms/Utils/BreakCriticalEdges.cpp +++ b/lib/Transforms/Utils/BreakCriticalEdges.cpp @@ -15,7 +15,6 @@ // //===----------------------------------------------------------------------===// -#define DEBUG_TYPE "break-crit-edges" #include "llvm/Transforms/Scalar.h" #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/Statistic.h" @@ -30,6 +29,8 @@ #include "llvm/Transforms/Utils/BasicBlockUtils.h" using namespace llvm; +#define DEBUG_TYPE "break-crit-edges" + STATISTIC(NumBroken, "Number of blocks inserted"); namespace { @@ -141,7 +142,7 @@ BasicBlock *llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, Pass *P, bool MergeIdenticalEdges, bool DontDeleteUselessPhis, bool SplitLandingPads) { - if (!isCriticalEdge(TI, SuccNum, MergeIdenticalEdges)) return 0; + if (!isCriticalEdge(TI, SuccNum, MergeIdenticalEdges)) return nullptr; assert(!isa<IndirectBrInst>(TI) && "Cannot split critical edge from IndirectBrInst"); @@ -151,7 +152,7 @@ BasicBlock *llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, // Splitting the critical edge to a landing pad block is non-trivial. Don't do // it in this generic function. - if (DestBB->isLandingPad()) return 0; + if (DestBB->isLandingPad()) return nullptr; // Create a new basic block, linking it into the CFG. BasicBlock *NewBB = BasicBlock::Create(TI->getContext(), @@ -207,15 +208,15 @@ BasicBlock *llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, // If we don't have a pass object, we can't update anything... - if (P == 0) return NewBB; + if (!P) return NewBB; DominatorTreeWrapperPass *DTWP = P->getAnalysisIfAvailable<DominatorTreeWrapperPass>(); - DominatorTree *DT = DTWP ? &DTWP->getDomTree() : 0; + DominatorTree *DT = DTWP ? &DTWP->getDomTree() : nullptr; LoopInfo *LI = P->getAnalysisIfAvailable<LoopInfo>(); // If we have nothing to update, just return. - if (DT == 0 && LI == 0) + if (!DT && !LI) return NewBB; // Now update analysis information. Since the only predecessor of NewBB is @@ -251,7 +252,7 @@ BasicBlock *llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, // if (TINode) { // Don't break unreachable code! DomTreeNode *NewBBNode = DT->addNewBlock(NewBB, TIBB); - DomTreeNode *DestBBNode = 0; + DomTreeNode *DestBBNode = nullptr; // If NewBBDominatesDestBB hasn't been computed yet, do so with DT. if (!OtherPreds.empty()) { |