501   Zero = APInt::getNullValue(IntTyBits);  in compute()
558     return std::make_pair(align(Size, I.getAlignment()), Zero);  in visitAllocaInst()
569                                                  Zero);  in visitAllocaInst()
582   return std::make_pair(align(Size, A.getParamAlignment()), Zero);  in visitArgument()
607     return std::make_pair(Size, Zero);  in visitCallSite()
620     return std::make_pair(Size, Zero);  in visitCallSite()
632   return Overflow ? unknown() : std::make_pair(Size, Zero);  in visitCallSite()
654   return std::make_pair(Zero, Zero);  in visitConstantPointerNull()
688   return std::make_pair(align(Size, GV.getAlignment()), Zero);  in visitGlobalVariable()
735   return std::make_pair(Zero, Zero);  in visitUndefValue()
756   Zero = ConstantInt::get(IntTy, 0);  in compute()
840   return std::make_pair(Size, Zero);  in visitAllocaInst()
857     return std::make_pair(FirstArg, Zero);  in visitCallSite()
862   return std::make_pair(Size, Zero);  in visitCallSite()