diff --git a/llvm/lib/Transforms/Utils/LCSSA.cpp b/llvm/lib/Transforms/Utils/LCSSA.cpp index ac540c9aaac2..37ab7ee7ff2c 100644 --- a/llvm/lib/Transforms/Utils/LCSSA.cpp +++ b/llvm/lib/Transforms/Utils/LCSSA.cpp @@ -91,6 +91,7 @@ const PassInfo *llvm::LCSSAID = X.getPassInfo(); /// runOnFunction - Process all loops in the function, inner-most out. bool LCSSA::runOnFunction(Function &F) { bool changed = false; + LI = &getAnalysis(); DF = &getAnalysis(); DT = &getAnalysis(); @@ -107,7 +108,7 @@ bool LCSSA::runOnFunction(Function &F) { bool LCSSA::visitSubloop(Loop* L) { for (Loop::iterator I = L->begin(), E = L->end(); I != E; ++I) visitSubloop(*I); - + // Speed up queries by creating a sorted list of blocks LoopBlocks.clear(); LoopBlocks.insert(LoopBlocks.end(), L->block_begin(), L->block_end()); @@ -162,7 +163,6 @@ void LCSSA::processInstruction(Instruction* Instr, phi = new PHINode(Instr->getType(), Instr->getName()+".lcssa", (*BBI)->begin()); workList.push_back(cast(phi)); - Phis[*BBI] = phi; } } @@ -253,6 +253,11 @@ SetVector LCSSA::getLoopValuesUsedOutsideLoop(Loop *L) { for (Value::use_iterator UI = I->use_begin(), E = I->use_end(); UI != E; ++UI) { BasicBlock *UserBB = cast(*UI)->getParent(); + if (PHINode* p = dyn_cast(*UI)) { + unsigned OperandNo = UI.getOperandNo(); + UserBB = p->getIncomingBlock(OperandNo/2); + } + if (!inLoop(UserBB)) { AffectedValues.insert(I); break;