/usr/include/llvm-3.9/llvm/IR/MDBuilder.h is in llvm-3.9-dev 1:3.9.1-19ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | //===---- llvm/MDBuilder.h - Builder for LLVM metadata ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the MDBuilder class, which is used as a convenient way to
// create LLVM metadata with a consistent and simplified interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_MDBUILDER_H
#define LLVM_IR_MDBUILDER_H
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"
#include <utility>
namespace llvm {
class APInt;
template <typename T> class ArrayRef;
class LLVMContext;
class Constant;
class ConstantAsMetadata;
class MDNode;
class MDString;
class MDBuilder {
LLVMContext &Context;
public:
MDBuilder(LLVMContext &context) : Context(context) {}
/// \brief Return the given string as metadata.
MDString *createString(StringRef Str);
/// \brief Return the given constant as metadata.
ConstantAsMetadata *createConstant(Constant *C);
//===------------------------------------------------------------------===//
// FPMath metadata.
//===------------------------------------------------------------------===//
/// \brief Return metadata with the given settings. The special value 0.0
/// for the Accuracy parameter indicates the default (maximal precision)
/// setting.
MDNode *createFPMath(float Accuracy);
//===------------------------------------------------------------------===//
// Prof metadata.
//===------------------------------------------------------------------===//
/// \brief Return metadata containing two branch weights.
MDNode *createBranchWeights(uint32_t TrueWeight, uint32_t FalseWeight);
/// \brief Return metadata containing a number of branch weights.
MDNode *createBranchWeights(ArrayRef<uint32_t> Weights);
/// Return metadata specifying that a branch or switch is unpredictable.
MDNode *createUnpredictable();
/// Return metadata containing the entry count for a function.
MDNode *createFunctionEntryCount(uint64_t Count);
//===------------------------------------------------------------------===//
// Range metadata.
//===------------------------------------------------------------------===//
/// \brief Return metadata describing the range [Lo, Hi).
MDNode *createRange(const APInt &Lo, const APInt &Hi);
/// \brief Return metadata describing the range [Lo, Hi).
MDNode *createRange(Constant *Lo, Constant *Hi);
//===------------------------------------------------------------------===//
// AA metadata.
//===------------------------------------------------------------------===//
protected:
/// \brief Return metadata appropriate for a AA root node (scope or TBAA).
/// Each returned node is distinct from all other metadata and will never
/// be identified (uniqued) with anything else.
MDNode *createAnonymousAARoot(StringRef Name = StringRef(),
MDNode *Extra = nullptr);
public:
/// \brief Return metadata appropriate for a TBAA root node. Each returned
/// node is distinct from all other metadata and will never be identified
/// (uniqued) with anything else.
MDNode *createAnonymousTBAARoot() {
return createAnonymousAARoot();
}
/// \brief Return metadata appropriate for an alias scope domain node.
/// Each returned node is distinct from all other metadata and will never
/// be identified (uniqued) with anything else.
MDNode *createAnonymousAliasScopeDomain(StringRef Name = StringRef()) {
return createAnonymousAARoot(Name);
}
/// \brief Return metadata appropriate for an alias scope root node.
/// Each returned node is distinct from all other metadata and will never
/// be identified (uniqued) with anything else.
MDNode *createAnonymousAliasScope(MDNode *Domain,
StringRef Name = StringRef()) {
return createAnonymousAARoot(Name, Domain);
}
/// \brief Return metadata appropriate for a TBAA root node with the given
/// name. This may be identified (uniqued) with other roots with the same
/// name.
MDNode *createTBAARoot(StringRef Name);
/// \brief Return metadata appropriate for an alias scope domain node with
/// the given name. This may be identified (uniqued) with other roots with
/// the same name.
MDNode *createAliasScopeDomain(StringRef Name);
/// \brief Return metadata appropriate for an alias scope node with
/// the given name. This may be identified (uniqued) with other scopes with
/// the same name and domain.
MDNode *createAliasScope(StringRef Name, MDNode *Domain);
/// \brief Return metadata for a non-root TBAA node with the given name,
/// parent in the TBAA tree, and value for 'pointsToConstantMemory'.
MDNode *createTBAANode(StringRef Name, MDNode *Parent,
bool isConstant = false);
struct TBAAStructField {
uint64_t Offset;
uint64_t Size;
MDNode *TBAA;
TBAAStructField(uint64_t Offset, uint64_t Size, MDNode *TBAA) :
Offset(Offset), Size(Size), TBAA(TBAA) {}
};
/// \brief Return metadata for a tbaa.struct node with the given
/// struct field descriptions.
MDNode *createTBAAStructNode(ArrayRef<TBAAStructField> Fields);
/// \brief Return metadata for a TBAA struct node in the type DAG
/// with the given name, a list of pairs (offset, field type in the type DAG).
MDNode *
createTBAAStructTypeNode(StringRef Name,
ArrayRef<std::pair<MDNode *, uint64_t>> Fields);
/// \brief Return metadata for a TBAA scalar type node with the
/// given name, an offset and a parent in the TBAA type DAG.
MDNode *createTBAAScalarTypeNode(StringRef Name, MDNode *Parent,
uint64_t Offset = 0);
/// \brief Return metadata for a TBAA tag node with the given
/// base type, access type and offset relative to the base type.
MDNode *createTBAAStructTagNode(MDNode *BaseType, MDNode *AccessType,
uint64_t Offset, bool IsConstant = false);
};
} // end namespace llvm
#endif
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