diff options
| -rw-r--r-- | lib/Transforms/Utils/BasicBlockUtils.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/Transforms/Utils/BasicBlockUtils.cpp b/lib/Transforms/Utils/BasicBlockUtils.cpp index c705cc5..92464e8 100644 --- a/lib/Transforms/Utils/BasicBlockUtils.cpp +++ b/lib/Transforms/Utils/BasicBlockUtils.cpp @@ -542,11 +542,9 @@ ReturnInst *llvm::FoldReturnIntoUncondBranch(ReturnInst *RI, BasicBlock *BB, /// GetFirstDebugLocInBasicBlock - Return first valid DebugLoc entry in a /// given basic block. DebugLoc llvm::GetFirstDebugLocInBasicBlock(const BasicBlock *BB) { - for (BasicBlock::const_iterator BI = BB->begin(), BE = BB->end(); - BI != BE; ++BI) { - DebugLoc DL = BI->getDebugLoc(); - if (!DL.isUnknown()) - return DL; - } + if (const Instruction *I = BB->getFirstNonPHI()) + return I->getDebugLoc(); + // Scanning entire block may be too expensive, if the first instruction + // does not have valid location info. return DebugLoc(); } |