// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
+//
+// This file declares LLVMContext, a container of "global" state in LLVM, such
+// as the global type and constant uniquing tables.
+//
+//===----------------------------------------------------------------------===//
#ifndef LLVM_LLVMCONTEXT_H
#define LLVM_LLVMCONTEXT_H
namespace llvm {
-class LLVMContextImpl;
+class APFloat;
+class APInt;
+class ArrayType;
class Constant;
-class ConstantInt;
-class ConstantPointerNull;
-class ConstantStruct;
class ConstantAggregateZero;
class ConstantArray;
class ConstantFP;
+class ConstantInt;
+class ConstantPointerNull;
+class ConstantStruct;
class ConstantVector;
+class FunctionType;
class IntegerType;
+struct LLVMContextImpl;
+class MDNode;
+class MDString;
+class OpaqueType;
class PointerType;
+class StringRef;
class StructType;
-class ArrayType;
-class VectorType;
class Type;
-class APInt;
-class APFloat;
+class UndefValue;
+class Use;
class Value;
+class VectorType;
-class LLVMContext {
+/// This is an important class for using LLVM in a threaded context. It
+/// (opaquely) owns and manages the core "global" data of LLVM's core
+/// infrastructure, including the type and constant uniquing tables.
+/// LLVMContext itself provides no locking guarantees, so you should be careful
+/// to have one context per thread.
+struct LLVMContext {
LLVMContextImpl* pImpl;
-public:
+
LLVMContext();
~LLVMContext();
-
- // ConstantInt accessors
- ConstantInt* getConstantIntTrue();
- ConstantInt* getConstantIntFalse();
- ConstantInt* getConstantInt(const IntegerType* Ty, uint64_t V,
- bool isSigned = false);
- ConstantInt* getConstantIntSigned(const IntegerType* Ty, int64_t V);
- ConstantInt* getConstantInt(const APInt& V);
- Constant* getConstantInt(const Type* Ty, const APInt& V);
- ConstantInt* getAllOnesConstantInt(const Type* Ty);
-
- // ConstantPointerNull accessors
- ConstantPointerNull* getConstantPointerNull(const PointerType* T);
-
- // ConstantStruct accessors
- Constant* getConstantStruct(const StructType* T,
- const std::vector<Constant*>& V);
- Constant* getConstantStruct(const std::vector<Constant*>& V,
- bool Packed = false);
- Constant* getConstantStruct(Constant* const *Vals, unsigned NumVals,
- bool Packed = false);
-
- // ConstantAggregateZero accessors
- ConstantAggregateZero* getConstantAggregateZero(const Type* Ty);
-
- // ConstantArray accessors
- Constant* getConstantArray(const ArrayType* T,
- const std::vector<Constant*>& V);
- Constant* getConstantArray(const ArrayType* T, Constant* const* Vals,
- unsigned NumVals);
- Constant* getConstantArray(const std::string& Initializer,
- bool AddNull = false);
-
- // ConstantExpr accessors
- Constant* getConstantExpr(unsigned Opcode, Constant* C1, Constant* C2);
- Constant* getConstantExprTrunc(Constant* C, const Type* Ty);
- Constant* getConstantExprSExt(Constant* C, const Type* Ty);
- Constant* getConstantExprZExt(Constant* C, const Type* Ty);
- Constant* getConstantExprFPTrunc(Constant* C, const Type* Ty);
- Constant* getConstantExprFPExtend(Constant* C, const Type* Ty);
- Constant* getConstantExprUIToFP(Constant* C, const Type* Ty);
- Constant* getConstantExprSIToFP(Constant* C, const Type* Ty);
- Constant* getConstantExprFPToUI(Constant* C, const Type* Ty);
- Constant* getConstantExprFPToSI(Constant* C, const Type* Ty);
- Constant* getConstantExprPtrToInt(Constant* C, const Type* Ty);
- Constant* getConstantExprIntToPtr(Constant* C, const Type* Ty);
- Constant* getConstantExprBitCast(Constant* C, const Type* Ty);
- Constant* getConstantExprCast(unsigned ops, Constant* C, const Type* Ty);
- Constant* getConstantExprZExtOrBitCast(Constant* C, const Type* Ty);
- Constant* getConstantExprSExtOrBitCast(Constant* C, const Type* Ty);
- Constant* getConstantExprTruncOrBitCast(Constant* C, const Type* Ty);
- Constant* getConstantExprPointerCast(Constant* C, const Type* Ty);
- Constant* getConstantExprIntegerCast(Constant* C, const Type* Ty,
- bool isSigned);
- Constant* getConstantExprFPCast(Constant* C, const Type* Ty);
- Constant* getConstantExprSelect(Constant* C, Constant* V1, Constant* V2);
- Constant* getConstantExprAlignOf(const Type* Ty);
- Constant* getConstantExprCompare(unsigned short pred,
- Constant* C1, Constant* C2);
- Constant* getConstantExprNeg(Constant* C);
- Constant* getConstantExprFNeg(Constant* C);
- Constant* getConstantExprNot(Constant* C);
- Constant* getConstantExprAdd(Constant* C1, Constant* C2);
- Constant* getConstantExprFAdd(Constant* C1, Constant* C2);
- Constant* getConstantExprSub(Constant* C1, Constant* C2);
- Constant* getConstantExprFSub(Constant* C1, Constant* C2);
- Constant* getConstantExprMul(Constant* C1, Constant* C2);
- Constant* getConstantExprFMul(Constant* C1, Constant* C2);
- Constant* getConstantExprUDiv(Constant* C1, Constant* C2);
- Constant* getConstantExprSDiv(Constant* C1, Constant* C2);
- Constant* getConstantExprFDiv(Constant* C1, Constant* C2);
- Constant* getConstantExprURem(Constant* C1, Constant* C2);
- Constant* getConstantExprSRem(Constant* C1, Constant* C2);
- Constant* getConstantExprFRem(Constant* C1, Constant* C2);
- Constant* getConstantExprAnd(Constant* C1, Constant* C2);
- Constant* getConstantExprOr(Constant* C1, Constant* C2);
- Constant* getConstantExprXor(Constant* C1, Constant* C2);
- Constant* getConstantExprICmp(unsigned short pred, Constant* LHS,
- Constant* RHS);
- Constant* getConstantExprFCmp(unsigned short pred, Constant* LHS,
- Constant* RHS);
- Constant* getConstantExprVICmp(unsigned short pred, Constant* LHS,
- Constant* RHS);
- Constant* getConstantExprVFCmp(unsigned short pred, Constant* LHS,
- Constant* RHS);
- Constant* getConstantExprShl(Constant* C1, Constant* C2);
- Constant* getConstantExprLShr(Constant* C1, Constant* C2);
- Constant* getConstantExprAShr(Constant* C1, Constant* C2);
- Constant* getConstantExprGetElementPtr(Constant* C, Constant* const* IdxList,
- unsigned NumIdx);
- Constant* getConstantExprGetElementPtr(Constant* C, Value* const* IdxList,
- unsigned NumIdx);
- Constant* getConstantExprExtractElement(Constant* Vec, Constant* Idx);
- Constant* getConstantExprInsertElement(Constant* Vec, Constant* Elt,
- Constant* Idx);
- Constant* getConstantExprShuffleVector(Constant* V1, Constant* V2,
- Constant* Mask);
- Constant* getConstantExprExtractValue(Constant* Agg, const unsigned* IdxList,
- unsigned NumIdx);
- Constant* getConstantExprInsertValue(Constant* Agg, Constant* Val,
- const unsigned* IdxList,
- unsigned NumIdx);
- Constant* getZeroValueForNegation(const Type* Ty);
-
- // ConstantFP accessors
- ConstantFP* getConstantFP(const APFloat& V);
- Constant* getConstantFP(const Type* Ty, double V);
- ConstantFP* getConstantFPNegativeZero(const Type* Ty);
-
- // ConstantVector accessors
- Constant* getConstantVector(const VectorType* T,
- const std::vector<Constant*>& V);
- Constant* getConstantVector(const std::vector<Constant*>& V);
- Constant* getConstantVector(Constant* const* Vals, unsigned NumVals);
- ConstantVector* getConstantVectorAllOnes(const VectorType* Ty);
};
+/// FOR BACKWARDS COMPATIBILITY - Returns a global context.
+extern LLVMContext& getGlobalContext();
+
}
#endif
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