Transforms/Scalar/DeadStoreElimination.cpp

23 #include "llvm/Analysis/AliasAnalysis.h"
46     AliasAnalysis *AA;
57       AA = &getAnalysis<AliasAnalysis>();
76     void RemoveAccessedObjects(const AliasAnalysis::Location &LoadedLoc,
82       AU.addRequired<AliasAnalysis>();
84       AU.addPreserved<AliasAnalysis>();
95 INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
191 static AliasAnalysis::Location
192 getLocForWrite(Instruction *Inst, AliasAnalysis &AA) {
198     AliasAnalysis::Location Loc = AA.getLocationForDest(MI);
202     if (Loc.Size == AliasAnalysis::UnknownSize && AA.getDataLayout() == 0)
203       return AliasAnalysis::Location();
208   if (II == 0) return AliasAnalysis::Location();
211   default: return AliasAnalysis::Location(); // Unhandled intrinsic.
216     if (AA.getDataLayout() == 0) return AliasAnalysis::Location();
220     return AliasAnalysis::Location(II->getArgOperand(0));
223     return AliasAnalysis::Location(II->getArgOperand(1), Len);
230 static AliasAnalysis::Location
231 getLocForRead(Instruction *Inst, AliasAnalysis &AA) {
239   return AliasAnalysis::Location();
319 static uint64_t getPointerSize(const Value *V, AliasAnalysis &AA) {
323   return AliasAnalysis::UnknownSize;
339 static OverwriteResult isOverwrite(const AliasAnalysis::Location &Later,
340                                    const AliasAnalysis::Location &Earlier,
341                                    AliasAnalysis &AA,
352     if (Later.Size == AliasAnalysis::UnknownSize ||
353         Earlier.Size == AliasAnalysis::UnknownSize) {
371   if (Later.Size == AliasAnalysis::UnknownSize ||
372       Earlier.Size == AliasAnalysis::UnknownSize ||
391   if (ObjectSize != AliasAnalysis::UnknownSize)
458                                const AliasAnalysis::Location &InstStoreLoc,
459                                Instruction *DepWrite, AliasAnalysis &AA) {
462   AliasAnalysis::Location InstReadLoc = getLocForRead(Inst, AA);
476   AliasAnalysis::Location DepReadLoc = getLocForRead(DepWrite, AA);
542     AliasAnalysis::Location Loc = getLocForWrite(Inst, *AA);
557       AliasAnalysis::Location DepLoc = getLocForWrite(DepWrite, *AA);
624       if (AA->getModRefInfo(DepWrite, Loc) & AliasAnalysis::Ref)
660   AliasAnalysis::Location Loc = AliasAnalysis::Location(F->getOperand(0));
708     AliasAnalysis *AA;
712       AliasAnalysis::ModRefResult A =
715       return A == AliasAnalysis::ModRef || A == AliasAnalysis::Ref;
832     AliasAnalysis::Location LoadedLoc;
868     const AliasAnalysis::Location &LoadedLoc;
869     AliasAnalysis *AA;
873       AliasAnalysis::Location StackLoc(I, getPointerSize(I, *AA));
882 void DSE::RemoveAccessedObjects(const AliasAnalysis::Location &LoadedLoc,