1 //===- LLVM.h - Import and forward declare core LLVM types ------*- C++ -*-===// 2 // 3 // Part of the MLIR 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 // This file forward declares and imports various common LLVM datatypes that 10 // MLIR wants to use unqualified. 11 // 12 // Note that most of these are forward declared and then imported into the MLIR 13 // namespace with using decls, rather than being #included. This is because we 14 // want clients to explicitly #include the files they need. 15 // 16 //===----------------------------------------------------------------------===// 17 18 #ifndef MLIR_SUPPORT_LLVM_H 19 #define MLIR_SUPPORT_LLVM_H 20 21 // We include these two headers because they cannot be practically forward 22 // declared, and are effectively language features. 23 #include "llvm/ADT/None.h" 24 #include "llvm/Support/Casting.h" 25 26 // Forward declarations. 27 namespace llvm { 28 // Containers. 29 class StringRef; 30 class StringLiteral; 31 class Twine; 32 template <typename T> class SmallPtrSetImpl; 33 template <typename T, unsigned N> class SmallPtrSet; 34 template <typename T> class SmallVectorImpl; 35 template <typename T, unsigned N> class SmallVector; 36 template <unsigned N> class SmallString; 37 template <typename T> class ArrayRef; 38 template <typename T> class MutableArrayRef; 39 template <typename T> class TinyPtrVector; 40 template <typename T> class Optional; 41 template <typename... PT> class PointerUnion; 42 namespace detail { 43 template <typename KeyT, typename ValueT> struct DenseMapPair; 44 } 45 template <typename T> struct DenseMapInfo; 46 template <typename ValueT, typename ValueInfoT> class DenseSet; 47 template <typename KeyT, typename ValueT, typename KeyInfoT, typename BucketT> 48 class DenseMap; 49 template <typename Fn> class function_ref; 50 template <typename IteratorT> class iterator_range; 51 52 // Other common classes. 53 class raw_ostream; 54 class APInt; 55 class APFloat; 56 } // end namespace llvm 57 58 namespace mlir { 59 // Casting operators. 60 using llvm::cast; 61 using llvm::cast_or_null; 62 using llvm::dyn_cast; 63 using llvm::dyn_cast_or_null; 64 using llvm::isa; 65 using llvm::isa_and_nonnull; 66 67 // Containers. 68 using llvm::ArrayRef; 69 using llvm::DenseMapInfo; 70 template <typename KeyT, typename ValueT, 71 typename KeyInfoT = DenseMapInfo<KeyT>, 72 typename BucketT = llvm::detail::DenseMapPair<KeyT, ValueT>> 73 using DenseMap = llvm::DenseMap<KeyT, ValueT, KeyInfoT, BucketT>; 74 template <typename ValueT, typename ValueInfoT = DenseMapInfo<ValueT>> 75 using DenseSet = llvm::DenseSet<ValueT, ValueInfoT>; 76 template <typename Fn> using function_ref = llvm::function_ref<Fn>; 77 using llvm::iterator_range; 78 using llvm::MutableArrayRef; 79 using llvm::None; 80 using llvm::Optional; 81 using llvm::PointerUnion; 82 using llvm::SmallPtrSet; 83 using llvm::SmallPtrSetImpl; 84 using llvm::SmallString; 85 using llvm::SmallVector; 86 using llvm::SmallVectorImpl; 87 using llvm::StringLiteral; 88 using llvm::StringRef; 89 using llvm::TinyPtrVector; 90 using llvm::Twine; 91 92 // Other common classes. 93 using llvm::APFloat; 94 using llvm::APInt; 95 using llvm::raw_ostream; 96 } // namespace mlir 97 98 #endif // MLIR_SUPPORT_LLVM_H 99