C++ (Cpp) RLEContext::getMemLocation示例

void BBState::updateForwardSetForWrite(RLEContext &Ctx, unsigned bit,
                                       LoadStoreValue Val) {
  // This is a store. Invalidate any Memlocation that this location may
  // alias, as their value can no longer be forwarded.
  MemLocation &R = Ctx.getMemLocation(bit);
  for (unsigned i = 0; i < ForwardSetIn.size(); ++i) {
    if (!isTrackingMemLocation(i))
      continue;
    MemLocation &L = Ctx.getMemLocation(i);
    if (!L.isMayAliasMemLocation(R, Ctx.getAA()))
      continue;
    // MayAlias, invaliate the MemLocation.
    stopTrackingMemLocation(i);
  }

  // Start tracking this MemLocation.
  startTrackingMemLocation(bit, Val);
}

示例#2

显示文件

文件： RedundantLoadElimination.cpp 项目： dshah22/swift

void BBState::processUnknownWriteInst(RLEContext &Ctx, SILInstruction *I) {
  auto *AA = Ctx.getAA();
  for (unsigned i = 0; i < ForwardSetIn.size(); ++i) {
    if (!isTrackingMemLocation(i))
      continue;
    // Invalidate any location this instruction may write to.
    //
    // TODO: checking may alias with Base is overly conservative,
    // we should check may alias with base plus projection path.
    MemLocation &R = Ctx.getMemLocation(i);
    if (!AA->mayWriteToMemory(I, R.getBase()))
      continue;
    // MayAlias.
    stopTrackingMemLocation(i);
  }
}