diff options
Diffstat (limited to 'lib/Transforms/Utils/LCSSA.cpp')
| -rw-r--r-- | lib/Transforms/Utils/LCSSA.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/Transforms/Utils/LCSSA.cpp b/lib/Transforms/Utils/LCSSA.cpp index 956d0387c7a8..a1f8e7484bcf 100644 --- a/lib/Transforms/Utils/LCSSA.cpp +++ b/lib/Transforms/Utils/LCSSA.cpp @@ -10,7 +10,7 @@ // This pass transforms loops by placing phi nodes at the end of the loops for // all values that are live across the loop boundary. For example, it turns // the left into the right code: -// +// // for (...) for (...) // if (c) if (c) // X1 = ... X1 = ... @@ -21,8 +21,8 @@ // ... = X4 + 4 // // This is still valid LLVM; the extra phi nodes are purely redundant, and will -// be trivially eliminated by InstCombine. The major benefit of this -// transformation is that it makes many other loop optimizations, such as +// be trivially eliminated by InstCombine. The major benefit of this +// transformation is that it makes many other loop optimizations, such as // LoopUnswitching, simpler. // //===----------------------------------------------------------------------===// @@ -144,7 +144,8 @@ bool llvm::formLCSSAForInstructions(SmallVectorImpl<Instruction *> &Worklist, PHINode *PN = PHINode::Create(I->getType(), PredCache.size(ExitBB), I->getName() + ".lcssa", &ExitBB->front()); - + // Get the debug location from the original instruction. + PN->setDebugLoc(I->getDebugLoc()); // Add inputs from inside the loop for this PHI. for (BasicBlock *Pred : PredCache.get(ExitBB)) { PN->addIncoming(I, Pred); |