llvm/lib/IR/TypedPointerType.cpp

   1 //===- TypedPointerType.cpp - Typed Pointer Type --------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 //
  10 //===----------------------------------------------------------------------===//
  11
  12 #include "llvm/IR/TypedPointerType.h"
  13 #include "LLVMContextImpl.h"
  14
  15 using namespace llvm;
  16
  17 TypedPointerType *TypedPointerType::get(Type *EltTy, unsigned AddressSpace) {
  18   assert(EltTy && "Can't get a pointer to <null> type!");
  19   assert(isValidElementType(EltTy) && "Invalid type for pointer element!");
  20
  21   LLVMContextImpl *CImpl = EltTy->getContext().pImpl;
  22
  23   // Since AddressSpace #0 is the common case, we special case it.
  24   TypedPointerType *&Entry =
  25       CImpl->ASTypedPointerTypes[std::make_pair(EltTy, AddressSpace)];
  26
  27   if (!Entry)
  28     Entry = new (CImpl->Alloc) TypedPointerType(EltTy, AddressSpace);
  29   return Entry;
  30 }
  31
  32 TypedPointerType::TypedPointerType(Type *E, unsigned AddrSpace)
  33     : Type(E->getContext(), TypedPointerTyID), PointeeTy(E) {
  34   ContainedTys = &PointeeTy;
  35   NumContainedTys = 1;
  36   setSubclassData(AddrSpace);
  37 }
  38
  39 bool TypedPointerType::isValidElementType(Type *ElemTy) {
  40   return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() &&
  41          !ElemTy->isMetadataTy() && !ElemTy->isTokenTy() &&
  42          !ElemTy->isX86_AMXTy();
  43 }