Changes in directory llvm/lib/Analysis:
ScalarEvolution.cpp updated: 1.116 -> 1.117 --- Log message: Fix PR1487: http://llvm.org/PR1487 and Transforms/IndVar/2007-06-06-DeleteDanglesPtr.ll --- Diffs of the changes: (+22 -3) ScalarEvolution.cpp | 25 ++++++++++++++++++++++--- 1 files changed, 22 insertions(+), 3 deletions(-) Index: llvm/lib/Analysis/ScalarEvolution.cpp diff -u llvm/lib/Analysis/ScalarEvolution.cpp:1.116 llvm/lib/Analysis/ScalarEvolution.cpp:1.117 --- llvm/lib/Analysis/ScalarEvolution.cpp:1.116 Wed May 2 20:11:53 2007 +++ llvm/lib/Analysis/ScalarEvolution.cpp Tue Jun 5 23:12:20 2007 @@ -1196,9 +1196,28 @@ /// client before it removes an instruction from the program, to make sure /// that no dangling references are left around. void ScalarEvolutionsImpl::deleteInstructionFromRecords(Instruction *I) { - Scalars.erase(I); - if (PHINode *PN = dyn_cast<PHINode>(I)) - ConstantEvolutionLoopExitValue.erase(PN); + SmallVector<Instruction *, 16> Worklist; + + if (Scalars.erase(I)) { + if (PHINode *PN = dyn_cast<PHINode>(I)) + ConstantEvolutionLoopExitValue.erase(PN); + Worklist.push_back(I); + } + + while (!Worklist.empty()) { + Instruction *II = Worklist.back(); + Worklist.pop_back(); + + for (Instruction::use_iterator UI = II->use_begin(), UE = II->use_end(); + UI != UE; ++UI) { + Instruction *Inst = dyn_cast<Instruction>(*UI); + if (Inst && hasSCEV(Inst) && Scalars.erase(Inst)) { + if (PHINode *PN = dyn_cast<PHINode>(II)) + ConstantEvolutionLoopExitValue.erase(PN); + Worklist.push_back(Inst); + } + } + } } _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
