diff options
Diffstat (limited to 'contrib/llvm/lib/Analysis/MemDerefPrinter.cpp')
| -rw-r--r-- | contrib/llvm/lib/Analysis/MemDerefPrinter.cpp | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/contrib/llvm/lib/Analysis/MemDerefPrinter.cpp b/contrib/llvm/lib/Analysis/MemDerefPrinter.cpp index fa292a28ec87..36f1424c8cf9 100644 --- a/contrib/llvm/lib/Analysis/MemDerefPrinter.cpp +++ b/contrib/llvm/lib/Analysis/MemDerefPrinter.cpp @@ -22,7 +22,8 @@ using namespace llvm; namespace { struct MemDerefPrinter : public FunctionPass { - SmallVector<Value *, 4> Vec; + SmallVector<Value *, 4> Deref; + SmallPtrSet<Value *, 4> DerefAndAligned; static char ID; // Pass identification, replacement for typeid MemDerefPrinter() : FunctionPass(ID) { @@ -34,7 +35,8 @@ namespace { bool runOnFunction(Function &F) override; void print(raw_ostream &OS, const Module * = nullptr) const override; void releaseMemory() override { - Vec.clear(); + Deref.clear(); + DerefAndAligned.clear(); } }; } @@ -51,11 +53,13 @@ FunctionPass *llvm::createMemDerefPrinter() { bool MemDerefPrinter::runOnFunction(Function &F) { const DataLayout &DL = F.getParent()->getDataLayout(); - for (auto &I: inst_range(F)) { + for (auto &I: instructions(F)) { if (LoadInst *LI = dyn_cast<LoadInst>(&I)) { Value *PO = LI->getPointerOperand(); if (isDereferenceablePointer(PO, DL)) - Vec.push_back(PO); + Deref.push_back(PO); + if (isDereferenceableAndAlignedPointer(PO, LI->getAlignment(), DL)) + DerefAndAligned.insert(PO); } } return false; @@ -63,8 +67,12 @@ bool MemDerefPrinter::runOnFunction(Function &F) { void MemDerefPrinter::print(raw_ostream &OS, const Module *M) const { OS << "The following are dereferenceable:\n"; - for (auto &V: Vec) { + for (Value *V: Deref) { V->print(OS); + if (DerefAndAligned.count(V)) + OS << "\t(aligned)"; + else + OS << "\t(unaligned)"; OS << "\n\n"; } } |