Import LLVM 74788.

1 files changed, 225 insertions, 0 deletions

diff --git a/include/llvm/LLVMContext.h b/include/llvm/LLVMContext.h
new file mode 100644
index 0000000..efe12cc
--- /dev/null
+++ b/include/llvm/LLVMContext.h
@@ -0,0 +1,225 @@
+//===-- llvm/LLVMContext.h - Class for managing "global" state --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// 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
+
+#include "llvm/Support/DataTypes.h"
+#include <vector>
+#include <string>
+
+namespace llvm {
+
+class LLVMContextImpl;
+class Constant;
+class ConstantInt;
+class ConstantPointerNull;
+class ConstantStruct;
+class ConstantAggregateZero;
+class ConstantArray;
+class ConstantFP;
+class ConstantVector;
+class UndefValue;
+class MDNode;
+class MDString;
+class IntegerType;
+class PointerType;
+class StructType;
+class ArrayType;
+class VectorType;
+class OpaqueType;
+class FunctionType;
+class Type;
+class APInt;
+class APFloat;
+class Value;
+
+/// 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.
+class LLVMContext {
+  LLVMContextImpl* pImpl;
+public:
+  LLVMContext();
+  ~LLVMContext();
+  
+  // Constant accessors
+  Constant* getNullValue(const Type* Ty);
+  Constant* getAllOnesValue(const Type* Ty);
+  
+  // UndefValue accessors
+  UndefValue* getUndef(const Type* Ty);
+  
+  // ConstantInt accessors
+  ConstantInt* getConstantIntTrue();
+  ConstantInt* getConstantIntFalse();
+  Constant* getConstantInt(const Type* Ty, uint64_t V,
+                              bool isSigned = false);
+  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* getConstantIntAllOnesValue(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* getConstantVectorAllOnesValue(const VectorType* Ty);
+  
+  // MDNode accessors
+  MDNode* getMDNode(Value* const* Vals, unsigned NumVals);
+  
+  // MDString accessors
+  MDString* getMDString(const char *StrBegin, const char *StrEnd);
+  MDString* getMDString(const std::string &Str);
+  
+  // FunctionType accessors
+  FunctionType* getFunctionType(const Type* Result,
+                                const std::vector<const Type*>& Params,
+                                bool isVarArg);
+                                
+  // IntegerType accessors
+  const IntegerType* getIntegerType(unsigned NumBits);
+  
+  // OpaqueType accessors
+  OpaqueType* getOpaqueType();
+  
+  // StructType accessors
+  StructType* getStructType(bool isPacked=false);
+  StructType* getStructType(const std::vector<const Type*>& Params,
+                            bool isPacked = false);
+  
+  // ArrayType accessors
+  ArrayType* getArrayType(const Type* ElementType, uint64_t NumElements);
+  
+  // PointerType accessors
+  PointerType* getPointerType(const Type* ElementType, unsigned AddressSpace);
+  PointerType* getPointerTypeUnqual(const Type* ElementType);
+  
+  // VectorType accessors
+  VectorType* getVectorType(const Type* ElementType, unsigned NumElements);
+  VectorType* getVectorTypeInteger(const VectorType* VTy);
+  VectorType* getVectorTypeExtendedElement(const VectorType* VTy);
+  VectorType* getVectorTypeTruncatedElement(const VectorType* VTy);
+};
+
+/// FOR BACKWARDS COMPATIBILITY - Returns a global context.
+extern LLVMContext& getGlobalContext();
+
+}
+
+#endif