| 1 | //===- AddressSpaces.h - Language-specific address spaces -------*- C++ -*-===// |
|---|---|
| 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 | /// \file |
| 10 | /// Provides definitions for the various language-specific address |
| 11 | /// spaces. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #ifndef LLVM_CLANG_BASIC_ADDRESSSPACES_H |
| 16 | #define LLVM_CLANG_BASIC_ADDRESSSPACES_H |
| 17 | |
| 18 | #include <cassert> |
| 19 | |
| 20 | namespace clang { |
| 21 | |
| 22 | /// Defines the address space values used by the address space qualifier |
| 23 | /// of QualType. |
| 24 | /// |
| 25 | enum class LangAS : unsigned { |
| 26 | // The default value 0 is the value used in QualType for the situation |
| 27 | // where there is no address space qualifier. |
| 28 | Default = 0, |
| 29 | |
| 30 | // OpenCL specific address spaces. |
| 31 | // In OpenCL each l-value must have certain non-default address space, each |
| 32 | // r-value must have no address space (i.e. the default address space). The |
| 33 | // pointee of a pointer must have non-default address space. |
| 34 | opencl_global, |
| 35 | opencl_local, |
| 36 | opencl_constant, |
| 37 | opencl_private, |
| 38 | opencl_generic, |
| 39 | |
| 40 | // CUDA specific address spaces. |
| 41 | cuda_device, |
| 42 | cuda_constant, |
| 43 | , |
| 44 | |
| 45 | // This denotes the count of language-specific address spaces and also |
| 46 | // the offset added to the target-specific address spaces, which are usually |
| 47 | // specified by address space attributes __attribute__(address_space(n))). |
| 48 | FirstTargetAddressSpace |
| 49 | }; |
| 50 | |
| 51 | /// The type of a lookup table which maps from language-specific address spaces |
| 52 | /// to target-specific ones. |
| 53 | using LangASMap = unsigned[(unsigned)LangAS::FirstTargetAddressSpace]; |
| 54 | |
| 55 | /// \return whether \p AS is a target-specific address space rather than a |
| 56 | /// clang AST address space |
| 57 | inline bool isTargetAddressSpace(LangAS AS) { |
| 58 | return (unsigned)AS >= (unsigned)LangAS::FirstTargetAddressSpace; |
| 59 | } |
| 60 | |
| 61 | inline unsigned toTargetAddressSpace(LangAS AS) { |
| 62 | assert(isTargetAddressSpace(AS)); |
| 63 | return (unsigned)AS - (unsigned)LangAS::FirstTargetAddressSpace; |
| 64 | } |
| 65 | |
| 66 | inline LangAS getLangASFromTargetAS(unsigned TargetAS) { |
| 67 | return static_cast<LangAS>((TargetAS) + |
| 68 | (unsigned)LangAS::FirstTargetAddressSpace); |
| 69 | } |
| 70 | |
| 71 | } // namespace clang |
| 72 | |
| 73 | #endif // LLVM_CLANG_BASIC_ADDRESSSPACES_H |
| 74 |