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   TypedPointerType *&Entry =
  24       CImpl->ASTypedPointerTypes[std::make_pair(EltTy, AddressSpace)];
  25
  26   if (!Entry)
  27     Entry = new (CImpl->Alloc) TypedPointerType(EltTy, AddressSpace);
  28   return Entry;
  29 }
  30
  31 TypedPointerType::TypedPointerType(Type *E, unsigned AddrSpace)
  32     : Type(E->getContext(), TypedPointerTyID), PointeeTy(E) {
  33   ContainedTys = &PointeeTy;
  34   NumContainedTys = 1;
  35   setSubclassData(AddrSpace);
  36 }
  37
  38 bool TypedPointerType::isValidElementType(Type *ElemTy) {
  39   return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() &&
  40          !ElemTy->isMetadataTy() && !ElemTy->isTokenTy() &&
  41          !ElemTy->isX86_AMXTy();
  42 }