//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_MDBUILDER_H
-#define LLVM_MDBUILDER_H
+#ifndef LLVM_IR_MDBUILDER_H
+#define LLVM_IR_MDBUILDER_H
-#include "llvm/ADT/APInt.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
-#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Metadata.h"
namespace llvm {
- class MDBuilder {
- LLVMContext &Context;
-
- public:
- MDBuilder(LLVMContext &context) : Context(context) {}
-
- /// \brief Return the given string as metadata.
- MDString *createString(StringRef Str) {
- return MDString::get(Context, Str);
- }
-
- //===------------------------------------------------------------------===//
- // 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);
- }
-
- //===------------------------------------------------------------------===//
- // 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);
- }
-
- /// \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]);
-
- return MDNode::get(Context, Vals);
- }
-
- //===------------------------------------------------------------------===//
- // 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);
- }
-
-
- //===------------------------------------------------------------------===//
- // TBAA metadata.
- //===------------------------------------------------------------------===//
-
- /// \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;
- }
-
- /// \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));
+class APInt;
+class LLVMContext;
+
+class MDBuilder {
+ LLVMContext &Context;
+
+public:
+ MDBuilder(LLVMContext &context) : Context(context) {}
+
+ /// \brief Return the given string as metadata.
+ MDString *createString(StringRef Str) {
+ return MDString::get(Context, Str);
+ }
+
+ //===------------------------------------------------------------------===//
+ // 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);
+ }
+
+ //===------------------------------------------------------------------===//
+ // 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);
+ }
+
+ /// \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]);
+
+ return MDNode::get(Context, Vals);
+ }
+
+ //===------------------------------------------------------------------===//
+ // 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);
+ }
+
+
+ //===------------------------------------------------------------------===//
+ // TBAA metadata.
+ //===------------------------------------------------------------------===//
+
+ /// \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;
+ }
+
+ /// \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));
+ }
+
+ /// \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);
}
+ }
+
+ 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 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);
- }
+ /// \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;
}
-
- 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) {
- 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);
+ return MDNode::get(Context, Vals);
+ }
+
+ /// \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);
+ }
+
+ /// \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) {
+ SmallVector<Value *, 4> Ops(3);
+ Type *Int64 = IntegerType::get(Context, 64);
+ Ops[0] = createString(Name);
+ Ops[1] = Parent;
+ Ops[2] = ConstantInt::get(Int64, Offset);
+ return MDNode::get(Context, Ops);
+ }
+
+ /// \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);
+ }
+
+};
} // end namespace llvm
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