diff options
Diffstat (limited to 'contrib/llvm/lib/Transforms/Utils/FlattenCFG.cpp')
| -rw-r--r-- | contrib/llvm/lib/Transforms/Utils/FlattenCFG.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/contrib/llvm/lib/Transforms/Utils/FlattenCFG.cpp b/contrib/llvm/lib/Transforms/Utils/FlattenCFG.cpp index 51ead40..4eb3e3d 100644 --- a/contrib/llvm/lib/Transforms/Utils/FlattenCFG.cpp +++ b/contrib/llvm/lib/Transforms/Utils/FlattenCFG.cpp @@ -238,9 +238,13 @@ bool FlattenCFGOpt::FlattenParallelAndOr(BasicBlock *BB, IRBuilder<> &Builder, // Do branch inversion. BasicBlock *CurrBlock = LastCondBlock; bool EverChanged = false; - while (1) { + for (;CurrBlock != FirstCondBlock; + CurrBlock = CurrBlock->getSinglePredecessor()) { BranchInst *BI = dyn_cast<BranchInst>(CurrBlock->getTerminator()); CmpInst *CI = dyn_cast<CmpInst>(BI->getCondition()); + if (!CI) + continue; + CmpInst::Predicate Predicate = CI->getPredicate(); // Canonicalize icmp_ne -> icmp_eq, fcmp_one -> fcmp_oeq if ((Predicate == CmpInst::ICMP_NE) || (Predicate == CmpInst::FCMP_ONE)) { @@ -248,9 +252,6 @@ bool FlattenCFGOpt::FlattenParallelAndOr(BasicBlock *BB, IRBuilder<> &Builder, BI->swapSuccessors(); EverChanged = true; } - if (CurrBlock == FirstCondBlock) - break; - CurrBlock = CurrBlock->getSinglePredecessor(); } return EverChanged; } |
