#ifndef LLVM_IR_MDBUILDER_H
#define LLVM_IR_MDBUILDER_H
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/DerivedTypes.h"
-#include "llvm/IR/Metadata.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;
MDBuilder(LLVMContext &context) : Context(context) {}
/// \brief Return the given string as metadata.
- MDString *createString(StringRef Str) {
- return MDString::get(Context, Str);
- }
+ 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) {
- if (Accuracy == 0.0)
- return 0;
- assert(Accuracy > 0.0 && "Invalid fpmath accuracy!");
- Value *Op = ConstantFP::get(Type::getFloatTy(Context), Accuracy);
- return MDNode::get(Context, Op);
- }
+ MDNode *createFPMath(float Accuracy);
//===------------------------------------------------------------------===//
// Prof metadata.
//===------------------------------------------------------------------===//
/// \brief Return metadata containing two branch weights.
- MDNode *createBranchWeights(uint32_t TrueWeight, uint32_t FalseWeight) {
- uint32_t Weights[] = { TrueWeight, FalseWeight };
- return createBranchWeights(Weights);
- }
+ MDNode *createBranchWeights(uint32_t TrueWeight, uint32_t FalseWeight);
/// \brief Return metadata containing a number of branch weights.
- MDNode *createBranchWeights(ArrayRef<uint32_t> Weights) {
- assert(Weights.size() >= 2 && "Need at least two branch weights!");
-
- SmallVector<Value *, 4> Vals(Weights.size()+1);
- Vals[0] = createString("branch_weights");
-
- Type *Int32Ty = Type::getInt32Ty(Context);
- for (unsigned i = 0, e = Weights.size(); i != e; ++i)
- Vals[i+1] = ConstantInt::get(Int32Ty, Weights[i]);
+ MDNode *createBranchWeights(ArrayRef<uint32_t> Weights);
- return MDNode::get(Context, Vals);
- }
+ /// 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) {
- assert(Lo.getBitWidth() == Hi.getBitWidth() && "Mismatched bitwidths!");
- // If the range is everything then it is useless.
- if (Hi == Lo)
- return 0;
-
- // Return the range [Lo, Hi).
- Type *Ty = IntegerType::get(Context, Lo.getBitWidth());
- Value *Range[2] = { ConstantInt::get(Ty, Lo), ConstantInt::get(Ty, Hi) };
- return MDNode::get(Context, Range);
- }
+ MDNode *createRange(const APInt &Lo, const APInt &Hi);
+ /// \brief Return metadata describing the range [Lo, Hi).
+ MDNode *createRange(Constant *Lo, Constant *Hi);
//===------------------------------------------------------------------===//
- // TBAA metadata.
+ // AA metadata.
//===------------------------------------------------------------------===//
- /// \brief Return metadata appropriate for a TBAA root node. Each returned
+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() {
- // To ensure uniqueness the root node is self-referential.
- MDNode *Dummy = MDNode::getTemporary(Context, ArrayRef<Value*>());
- MDNode *Root = MDNode::get(Context, Dummy);
- // At this point we have
- // !0 = metadata !{} <- dummy
- // !1 = metadata !{metadata !0} <- root
- // Replace the dummy operand with the root node itself and delete the dummy.
- Root->replaceOperandWith(0, Root);
- MDNode::deleteTemporary(Dummy);
- // We now have
- // !1 = metadata !{metadata !1} <- self-referential root
- return Root;
+ 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) {
- return MDNode::get(Context, createString(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) {
- if (isConstant) {
- Constant *Flags = ConstantInt::get(Type::getInt64Ty(Context), 1);
- Value *Ops[3] = { createString(Name), Parent, Flags };
- return MDNode::get(Context, Ops);
- } else {
- Value *Ops[2] = { createString(Name), Parent };
- return MDNode::get(Context, Ops);
- }
- }
+ bool isConstant = false);
struct TBAAStructField {
uint64_t Offset;
/// \brief Return metadata for a tbaa.struct node with the given
/// struct field descriptions.
- MDNode *createTBAAStructNode(ArrayRef<TBAAStructField> Fields) {
- SmallVector<Value *, 4> Vals(Fields.size() * 3);
- Type *Int64 = IntegerType::get(Context, 64);
- for (unsigned i = 0, e = Fields.size(); i != e; ++i) {
- Vals[i * 3 + 0] = ConstantInt::get(Int64, Fields[i].Offset);
- Vals[i * 3 + 1] = ConstantInt::get(Int64, Fields[i].Size);
- Vals[i * 3 + 2] = Fields[i].TBAA;
- }
- return MDNode::get(Context, Vals);
- }
+ 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) {
- SmallVector<Value *, 4> Ops(Fields.size() * 2 + 1);
- Type *Int64 = IntegerType::get(Context, 64);
- Ops[0] = createString(Name);
- for (unsigned i = 0, e = Fields.size(); i != e; ++i) {
- Ops[i * 2 + 1] = Fields[i].first;
- Ops[i * 2 + 2] = ConstantInt::get(Int64, Fields[i].second);
- }
- return MDNode::get(Context, Ops);
- }
+ 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) {
- ConstantInt *Off = ConstantInt::get(Type::getInt64Ty(Context), Offset);
- Value *Ops[3] = { createString(Name), Parent, Off };
- return MDNode::get(Context, Ops);
- }
+ 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) {
- Type *Int64 = IntegerType::get(Context, 64);
- Value *Ops[3] = { BaseType, AccessType, ConstantInt::get(Int64, Offset) };
- return MDNode::get(Context, Ops);
- }
-
+ uint64_t Offset, bool IsConstant = false);
};
} // end namespace llvm
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