llvm/include/llvm-c/Core.h

/*===-- llvm-c/Core.h - Core Library C Interface ------------------*- C -*-===*\
|*                                                                            *|
|*                     The LLVM Compiler Infrastructure                       *|
|*                                                                            *|
|* This file is distributed under the University of Illinois Open Source      *|
|* License. See LICENSE.TXT for details.                                      *|
|*                                                                            *|
|*===----------------------------------------------------------------------===*|
|*                                                                            *|
|* This header declares the C interface to libLLVMCore.a, which implements    *|
|* the LLVM intermediate representation.                                      *|
|*                                                                            *|
|* LLVM uses a polymorphic type hierarchy which C cannot represent, therefore *|
|* parameters must be passed as base types. Despite the declared types, most  *|
|* of the functions provided operate only on branches of the type hierarchy.  *|
|* The declared parameter names are descriptive and specify which type is     *|
|* required. Additionally, each type hierarchy is documented along with the   *|
|* functions that operate upon it. For more detail, refer to LLVM's C++ code. *|
|* If in doubt, refer to Core.cpp, which performs paramter downcasts in the   *|
|* form unwrap<RequiredType>(Param).                                          *|
|*                                                                            *|
|* Many exotic languages can interoperate with C code but have a harder time  *|
|* with C++ due to name mangling. So in addition to C, this interface enables *|
|* tools written in such languages.                                           *|
|*                                                                            *|
|* When included into a C++ source file, also declares 'wrap' and 'unwrap'    *|
|* helpers to perform opaque reference<-->pointer conversions. These helpers  *|
|* are shorter and more tightly typed than writing the casts by hand when     *|
|* authoring bindings. In assert builds, they will do runtime type checking.  *|
|*                                                                            *|
\*===----------------------------------------------------------------------===*/

#ifndef LLVM_C_CORE_H
#define LLVM_C_CORE_H

#ifdef __cplusplus

/* Need these includes to support the LLVM 'cast' template for the C++ 'wrap' 
   and 'unwrap' conversion functions. */
#include "llvm/Module.h"
#include "llvm/Support/IRBuilder.h"

extern "C" {
#endif


/* Opaque types. */

/**
 * The top-level container for all other LLVM Intermediate Representation (IR)
 * objects. See the llvm::Module class.
 */
typedef struct LLVMOpaqueModule *LLVMModuleRef;

/**
 * Each value in the LLVM IR has a type, an LLVMTypeRef. See the llvm::Type
 * class.
 */
typedef struct LLVMOpaqueType *LLVMTypeRef;

/**
 * When building recursive types using LLVMRefineType, LLVMTypeRef values may
 * become invalid; use LLVMTypeHandleRef to resolve this problem. See the
 * llvm::AbstractTypeHolder class.
 */
typedef struct LLVMOpaqueTypeHandle *LLVMTypeHandleRef;

typedef struct LLVMOpaqueValue *LLVMValueRef;
typedef struct LLVMOpaqueBasicBlock *LLVMBasicBlockRef;
typedef struct LLVMOpaqueBuilder *LLVMBuilderRef;

/* Used to provide a module to JIT or interpreter.
 * See the llvm::ModuleProvider class.
 */
typedef struct LLVMOpaqueModuleProvider *LLVMModuleProviderRef;

/* Used to provide a module to JIT or interpreter.
 * See the llvm::MemoryBuffer class.
 */
typedef struct LLVMOpaqueMemoryBuffer *LLVMMemoryBufferRef;

/** See the llvm::PassManagerBase class. */
typedef struct LLVMOpaquePassManager *LLVMPassManagerRef;

typedef enum {
    LLVMZExtAttribute       = 1<<0,
    LLVMSExtAttribute       = 1<<1,
    LLVMNoReturnAttribute   = 1<<2,
    LLVMInRegAttribute      = 1<<3,
    LLVMStructRetAttribute  = 1<<4,
    LLVMNoUnwindAttribute   = 1<<5,
    LLVMNoAliasAttribute    = 1<<6,
    LLVMByValAttribute      = 1<<7,
    LLVMNestAttribute       = 1<<8,
    LLVMReadNoneAttribute   = 1<<9,
    LLVMReadOnlyAttribute   = 1<<10
} LLVMAttribute;

typedef enum {
  LLVMVoidTypeKind,        /**< type with no size */
  LLVMFloatTypeKind,       /**< 32 bit floating point type */
  LLVMDoubleTypeKind,      /**< 64 bit floating point type */
  LLVMX86_FP80TypeKind,    /**< 80 bit floating point type (X87) */
  LLVMFP128TypeKind,       /**< 128 bit floating point type (112-bit mantissa)*/
  LLVMPPC_FP128TypeKind,   /**< 128 bit floating point type (two 64-bits) */
  LLVMLabelTypeKind,       /**< Labels */
  LLVMIntegerTypeKind,     /**< Arbitrary bit width integers */
  LLVMFunctionTypeKind,    /**< Functions */
  LLVMStructTypeKind,      /**< Structures */
  LLVMArrayTypeKind,       /**< Arrays */
  LLVMPointerTypeKind,     /**< Pointers */
  LLVMOpaqueTypeKind,      /**< Opaque: type with unknown structure */
  LLVMVectorTypeKind       /**< SIMD 'packed' format, or other vector type */
} LLVMTypeKind;

typedef enum {
  LLVMExternalLinkage,    /**< Externally visible function */
  LLVMLinkOnceLinkage,    /**< Keep one copy of function when linking (inline)*/
  LLVMWeakLinkage,        /**< Keep one copy of function when linking (weak) */
  LLVMAppendingLinkage,   /**< Special purpose, only applies to global arrays */
  LLVMInternalLinkage,    /**< Rename collisions when linking (static
                               functions) */
  LLVMDLLImportLinkage,   /**< Function to be imported from DLL */
  LLVMDLLExportLinkage,   /**< Function to be accessible from DLL */
  LLVMExternalWeakLinkage,/**< ExternalWeak linkage description */
  LLVMGhostLinkage        /**< Stand-in functions for streaming fns from
                               bitcode */
} LLVMLinkage;

typedef enum {
  LLVMDefaultVisibility,  /**< The GV is visible */
  LLVMHiddenVisibility,   /**< The GV is hidden */
  LLVMProtectedVisibility /**< The GV is protected */
} LLVMVisibility;

typedef enum {
  LLVMCCallConv           = 0,
  LLVMFastCallConv        = 8,
  LLVMColdCallConv        = 9,
  LLVMX86StdcallCallConv  = 64,
  LLVMX86FastcallCallConv = 65
} LLVMCallConv;

typedef enum {
  LLVMIntEQ = 32, /**< equal */
  LLVMIntNE,      /**< not equal */
  LLVMIntUGT,     /**< unsigned greater than */
  LLVMIntUGE,     /**< unsigned greater or equal */
  LLVMIntULT,     /**< unsigned less than */
  LLVMIntULE,     /**< unsigned less or equal */
  LLVMIntSGT,     /**< signed greater than */
  LLVMIntSGE,     /**< signed greater or equal */
  LLVMIntSLT,     /**< signed less than */
  LLVMIntSLE      /**< signed less or equal */
} LLVMIntPredicate;

typedef enum {
  LLVMRealPredicateFalse, /**< Always false (always folded) */
  LLVMRealOEQ,            /**< True if ordered and equal */
  LLVMRealOGT,            /**< True if ordered and greater than */
  LLVMRealOGE,            /**< True if ordered and greater than or equal */
  LLVMRealOLT,            /**< True if ordered and less than */
  LLVMRealOLE,            /**< True if ordered and less than or equal */
  LLVMRealONE,            /**< True if ordered and operands are unequal */
  LLVMRealORD,            /**< True if ordered (no nans) */
  LLVMRealUNO,            /**< True if unordered: isnan(X) | isnan(Y) */
  LLVMRealUEQ,            /**< True if unordered or equal */
  LLVMRealUGT,            /**< True if unordered or greater than */
  LLVMRealUGE,            /**< True if unordered, greater than, or equal */
  LLVMRealULT,            /**< True if unordered or less than */
  LLVMRealULE,            /**< True if unordered, less than, or equal */
  LLVMRealUNE,            /**< True if unordered or not equal */
  LLVMRealPredicateTrue   /**< Always true (always folded) */
} LLVMRealPredicate;


/*===-- Error handling ----------------------------------------------------===*/

void LLVMDisposeMessage(char *Message);


/*===-- Modules -----------------------------------------------------------===*/

/* Create and destroy modules. */ 
/** See llvm::Module::Module. */
LLVMModuleRef LLVMModuleCreateWithName(const char *ModuleID);

/** See llvm::Module::~Module. */
void LLVMDisposeModule(LLVMModuleRef M);

/** Data layout. See Module::getDataLayout. */
const char *LLVMGetDataLayout(LLVMModuleRef M);
void LLVMSetDataLayout(LLVMModuleRef M, const char *Triple);

/** Target triple. See Module::getTargetTriple. */
const char *LLVMGetTarget(LLVMModuleRef M);
void LLVMSetTarget(LLVMModuleRef M, const char *Triple);

/** See Module::addTypeName. */
int LLVMAddTypeName(LLVMModuleRef M, const char *Name, LLVMTypeRef Ty);
void LLVMDeleteTypeName(LLVMModuleRef M, const char *Name);

/** See Module::dump. */
void LLVMDumpModule(LLVMModuleRef M);


/*===-- Types -------------------------------------------------------------===*/

/* LLVM types conform to the following hierarchy:
 * 
 *   types:
 *     integer type
 *     real type
 *     function type
 *     sequence types:
 *       array type
 *       pointer type
 *       vector type
 *     void type
 *     label type
 *     opaque type
 */

/** See llvm::LLVMTypeKind::getTypeID. */
LLVMTypeKind LLVMGetTypeKind(LLVMTypeRef Ty);

/* Operations on integer types */
LLVMTypeRef LLVMInt1Type(void);
LLVMTypeRef LLVMInt8Type(void);
LLVMTypeRef LLVMInt16Type(void);
LLVMTypeRef LLVMInt32Type(void);
LLVMTypeRef LLVMInt64Type(void);
LLVMTypeRef LLVMIntType(unsigned NumBits);
unsigned LLVMGetIntTypeWidth(LLVMTypeRef IntegerTy);

/* Operations on real types */
LLVMTypeRef LLVMFloatType(void);
LLVMTypeRef LLVMDoubleType(void);
LLVMTypeRef LLVMX86FP80Type(void);
LLVMTypeRef LLVMFP128Type(void);
LLVMTypeRef LLVMPPCFP128Type(void);

/* Operations on function types */
LLVMTypeRef LLVMFunctionType(LLVMTypeRef ReturnType,
                             LLVMTypeRef *ParamTypes, unsigned ParamCount,
                             int IsVarArg);
int LLVMIsFunctionVarArg(LLVMTypeRef FunctionTy);
LLVMTypeRef LLVMGetReturnType(LLVMTypeRef FunctionTy);
unsigned LLVMCountParamTypes(LLVMTypeRef FunctionTy);
void LLVMGetParamTypes(LLVMTypeRef FunctionTy, LLVMTypeRef *Dest);

/* Operations on struct types */
LLVMTypeRef LLVMStructType(LLVMTypeRef *ElementTypes, unsigned ElementCount,
                           int Packed);
unsigned LLVMCountStructElementTypes(LLVMTypeRef StructTy);
void LLVMGetStructElementTypes(LLVMTypeRef StructTy, LLVMTypeRef *Dest);
int LLVMIsPackedStruct(LLVMTypeRef StructTy);

/* Operations on array, pointer, and vector types (sequence types) */
LLVMTypeRef LLVMArrayType(LLVMTypeRef ElementType, unsigned ElementCount);
LLVMTypeRef LLVMPointerType(LLVMTypeRef ElementType, unsigned AddressSpace);
LLVMTypeRef LLVMVectorType(LLVMTypeRef ElementType, unsigned ElementCount);

LLVMTypeRef LLVMGetElementType(LLVMTypeRef Ty);
unsigned LLVMGetArrayLength(LLVMTypeRef ArrayTy);
unsigned LLVMGetPointerAddressSpace(LLVMTypeRef PointerTy);
unsigned LLVMGetVectorSize(LLVMTypeRef VectorTy);

/* Operations on other types */
LLVMTypeRef LLVMVoidType(void);
LLVMTypeRef LLVMLabelType(void);
LLVMTypeRef LLVMOpaqueType(void);

/* Operations on type handles */
LLVMTypeHandleRef LLVMCreateTypeHandle(LLVMTypeRef PotentiallyAbstractTy);
void LLVMRefineType(LLVMTypeRef AbstractTy, LLVMTypeRef ConcreteTy);
LLVMTypeRef LLVMResolveTypeHandle(LLVMTypeHandleRef TypeHandle);
void LLVMDisposeTypeHandle(LLVMTypeHandleRef TypeHandle);


/*===-- Values ------------------------------------------------------------===*/

/* The bulk of LLVM's object model consists of values, which comprise a very
 * rich type hierarchy.
 */

#define LLVM_FOR_EACH_VALUE_SUBCLASS(macro) \
  macro(Argument)                           \
  macro(BasicBlock)                         \
  macro(InlineAsm)                          \
  macro(User)                               \
    macro(Constant)                         \
      macro(ConstantAggregateZero)          \
      macro(ConstantArray)                  \
      macro(ConstantExpr)                   \
      macro(ConstantFP)                     \
      macro(ConstantInt)                    \
      macro(ConstantPointerNull)            \
      macro(ConstantStruct)                 \
      macro(ConstantVector)                 \
      macro(GlobalValue)                    \
        macro(Function)                     \
        macro(GlobalAlias)                  \
        macro(GlobalVariable)               \
      macro(UndefValue)                     \
    macro(Instruction)                      \
      macro(BinaryOperator)                 \
      macro(CallInst)                       \
        macro(IntrinsicInst)                \
          macro(DbgInfoIntrinsic)           \
            macro(DbgDeclareInst)           \
            macro(DbgFuncStartInst)         \
            macro(DbgRegionEndInst)         \
            macro(DbgRegionStartInst)       \
            macro(DbgStopPointInst)         \
          macro(EHSelectorInst)             \
          macro(MemIntrinsic)               \
            macro(MemCpyInst)               \
            macro(MemMoveInst)              \
            macro(MemSetInst)               \
      macro(CmpInst)                        \
      macro(FCmpInst)                       \
      macro(ICmpInst)                       \
      macro(VFCmpInst)                      \
      macro(VICmpInst)                      \
      macro(ExtractElementInst)             \
      macro(GetElementPtrInst)              \
      macro(InsertElementInst)              \
      macro(InsertValueInst)                \
      macro(PHINode)                        \
      macro(SelectInst)                     \
      macro(ShuffleVectorInst)              \
      macro(StoreInst)                      \
      macro(TerminatorInst)                 \
        macro(BranchInst)                   \
        macro(InvokeInst)                   \
        macro(ReturnInst)                   \
        macro(SwitchInst)                   \
        macro(UnreachableInst)              \
        macro(UnwindInst)                   \
    macro(UnaryInstruction)                 \
      macro(AllocationInst)                 \
      macro(CastInst)                       \
      macro(ExtractValueInst)

/* Operations on all values */
LLVMTypeRef LLVMTypeOf(LLVMValueRef Val);
const char *LLVMGetValueName(LLVMValueRef Val);
void LLVMSetValueName(LLVMValueRef Val, const char *Name);
void LLVMDumpValue(LLVMValueRef Val);

/* Conversion functions. Return the input value if it is an instance of the
   specified class, otherwise NULL. See llvm::dyn_cast_or_null<>. */
#define LLVM_DECLARE_VALUE_CAST(name) \
  LLVMValueRef LLVMIsA##name(LLVMValueRef Val);
LLVM_FOR_EACH_VALUE_SUBCLASS(LLVM_DECLARE_VALUE_CAST)

/* Operations on constants of any type */
LLVMValueRef LLVMConstNull(LLVMTypeRef Ty); /* all zeroes */
LLVMValueRef LLVMConstAllOnes(LLVMTypeRef Ty); /* only for int/vector */
LLVMValueRef LLVMGetUndef(LLVMTypeRef Ty);
int LLVMIsConstant(LLVMValueRef Val);
int LLVMIsNull(LLVMValueRef Val);
int LLVMIsUndef(LLVMValueRef Val);

/* Operations on scalar constants */
LLVMValueRef LLVMConstInt(LLVMTypeRef IntTy, unsigned long long N,
                          int SignExtend);
LLVMValueRef LLVMConstReal(LLVMTypeRef RealTy, double N);
LLVMValueRef LLVMConstRealOfString(LLVMTypeRef RealTy, const char *Text);

/* Operations on composite constants */
LLVMValueRef LLVMConstString(const char *Str, unsigned Length,
                             int DontNullTerminate);
LLVMValueRef LLVMConstArray(LLVMTypeRef ElementTy,
                            LLVMValueRef *ConstantVals, unsigned Length);
LLVMValueRef LLVMConstStruct(LLVMValueRef *ConstantVals, unsigned Count,
                             int packed);
LLVMValueRef LLVMConstVector(LLVMValueRef *ScalarConstantVals, unsigned Size);

/* Constant expressions */
LLVMValueRef LLVMSizeOf(LLVMTypeRef Ty);
LLVMValueRef LLVMConstNeg(LLVMValueRef ConstantVal);
LLVMValueRef LLVMConstNot(LLVMValueRef ConstantVal);
LLVMValueRef LLVMConstAdd(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstSub(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstMul(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstUDiv(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstSDiv(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstFDiv(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstURem(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstSRem(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstFRem(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstAnd(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstOr(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstXor(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstICmp(LLVMIntPredicate Predicate,
                           LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstFCmp(LLVMRealPredicate Predicate,
                           LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstShl(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstLShr(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstAShr(LLVMValueRef LHSConstant, LLVMValueRef RHSConstant);
LLVMValueRef LLVMConstGEP(LLVMValueRef ConstantVal,
                          LLVMValueRef *ConstantIndices, unsigned NumIndices);
LLVMValueRef LLVMConstTrunc(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstSExt(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstZExt(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstFPTrunc(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstFPExt(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstUIToFP(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstSIToFP(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstFPToUI(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstFPToSI(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstPtrToInt(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstIntToPtr(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstBitCast(LLVMValueRef ConstantVal, LLVMTypeRef ToType);
LLVMValueRef LLVMConstSelect(LLVMValueRef ConstantCondition,
                             LLVMValueRef ConstantIfTrue,
                             LLVMValueRef ConstantIfFalse);
LLVMValueRef LLVMConstExtractElement(LLVMValueRef VectorConstant,
                                     LLVMValueRef IndexConstant);
LLVMValueRef LLVMConstInsertElement(LLVMValueRef VectorConstant,
                                    LLVMValueRef ElementValueConstant,
                                    LLVMValueRef IndexConstant);
LLVMValueRef LLVMConstShuffleVector(LLVMValueRef VectorAConstant,
                                    LLVMValueRef VectorBConstant,
                                    LLVMValueRef MaskConstant);
LLVMValueRef LLVMConstExtractValue(LLVMValueRef AggConstant, unsigned *IdxList,
                                   unsigned NumIdx);
LLVMValueRef LLVMConstInsertValue(LLVMValueRef AggConstant,
                                  LLVMValueRef ElementValueConstant,
                                  unsigned *IdxList, unsigned NumIdx);
LLVMValueRef LLVMConstInlineAsm(LLVMTypeRef Ty, 
                                const char *AsmString, const char *Constraints,
                                int HasSideEffects);

/* Operations on global variables, functions, and aliases (globals) */
LLVMModuleRef LLVMGetGlobalParent(LLVMValueRef Global);
int LLVMIsDeclaration(LLVMValueRef Global);
LLVMLinkage LLVMGetLinkage(LLVMValueRef Global);
void LLVMSetLinkage(LLVMValueRef Global, LLVMLinkage Linkage);
const char *LLVMGetSection(LLVMValueRef Global);
void LLVMSetSection(LLVMValueRef Global, const char *Section);
LLVMVisibility LLVMGetVisibility(LLVMValueRef Global);
void LLVMSetVisibility(LLVMValueRef Global, LLVMVisibility Viz);
unsigned LLVMGetAlignment(LLVMValueRef Global);
void LLVMSetAlignment(LLVMValueRef Global, unsigned Bytes);

/* Operations on global variables */
LLVMValueRef LLVMAddGlobal(LLVMModuleRef M, LLVMTypeRef Ty, const char *Name);
LLVMValueRef LLVMGetNamedGlobal(LLVMModuleRef M, const char *Name);
LLVMValueRef LLVMGetFirstGlobal(LLVMModuleRef M);
LLVMValueRef LLVMGetLastGlobal(LLVMModuleRef M);
LLVMValueRef LLVMGetNextGlobal(LLVMValueRef GlobalVar);
LLVMValueRef LLVMGetPreviousGlobal(LLVMValueRef GlobalVar);
void LLVMDeleteGlobal(LLVMValueRef GlobalVar);
LLVMValueRef LLVMGetInitializer(LLVMValueRef GlobalVar);
void LLVMSetInitializer(LLVMValueRef GlobalVar, LLVMValueRef ConstantVal);
int LLVMIsThreadLocal(LLVMValueRef GlobalVar);
void LLVMSetThreadLocal(LLVMValueRef GlobalVar, int IsThreadLocal);
int LLVMIsGlobalConstant(LLVMValueRef GlobalVar);
void LLVMSetGlobalConstant(LLVMValueRef GlobalVar, int IsConstant);

/* Operations on aliases */
LLVMValueRef LLVMAddAlias(LLVMModuleRef M, LLVMTypeRef Ty, LLVMValueRef Aliasee,
                          const char *Name);

/* Operations on functions */
LLVMValueRef LLVMAddFunction(LLVMModuleRef M, const char *Name,
                             LLVMTypeRef FunctionTy);
LLVMValueRef LLVMGetNamedFunction(LLVMModuleRef M, const char *Name);
LLVMValueRef LLVMGetFirstFunction(LLVMModuleRef M);
LLVMValueRef LLVMGetLastFunction(LLVMModuleRef M);
LLVMValueRef LLVMGetNextFunction(LLVMValueRef Fn);
LLVMValueRef LLVMGetPreviousFunction(LLVMValueRef Fn);
void LLVMDeleteFunction(LLVMValueRef Fn);
unsigned LLVMGetIntrinsicID(LLVMValueRef Fn);
unsigned LLVMGetFunctionCallConv(LLVMValueRef Fn);
void LLVMSetFunctionCallConv(LLVMValueRef Fn, unsigned CC);
const char *LLVMGetGC(LLVMValueRef Fn);
void LLVMSetGC(LLVMValueRef Fn, const char *Name);

/* Operations on parameters */
unsigned LLVMCountParams(LLVMValueRef Fn);
void LLVMGetParams(LLVMValueRef Fn, LLVMValueRef *Params);
LLVMValueRef LLVMGetParam(LLVMValueRef Fn, unsigned Index);
LLVMValueRef LLVMGetParamParent(LLVMValueRef Inst);
LLVMValueRef LLVMGetFirstParam(LLVMValueRef Fn);
LLVMValueRef LLVMGetLastParam(LLVMValueRef Fn);
LLVMValueRef LLVMGetNextParam(LLVMValueRef Arg);
LLVMValueRef LLVMGetPreviousParam(LLVMValueRef Arg);
void LLVMAddAttribute(LLVMValueRef Arg, LLVMAttribute PA);
void LLVMRemoveAttribute(LLVMValueRef Arg, LLVMAttribute PA);
void LLVMSetParamAlignment(LLVMValueRef Arg, unsigned align);

/* Operations on basic blocks */
LLVMValueRef LLVMBasicBlockAsValue(LLVMBasicBlockRef BB);
int LLVMValueIsBasicBlock(LLVMValueRef Val);
LLVMBasicBlockRef LLVMValueAsBasicBlock(LLVMValueRef Val);
LLVMValueRef LLVMGetBasicBlockParent(LLVMBasicBlockRef BB);
unsigned LLVMCountBasicBlocks(LLVMValueRef Fn);
void LLVMGetBasicBlocks(LLVMValueRef Fn, LLVMBasicBlockRef *BasicBlocks);
LLVMBasicBlockRef LLVMGetFirstBasicBlock(LLVMValueRef Fn);
LLVMBasicBlockRef LLVMGetLastBasicBlock(LLVMValueRef Fn);
LLVMBasicBlockRef LLVMGetNextBasicBlock(LLVMBasicBlockRef BB);
LLVMBasicBlockRef LLVMGetPreviousBasicBlock(LLVMBasicBlockRef BB);
LLVMBasicBlockRef LLVMGetEntryBasicBlock(LLVMValueRef Fn);
LLVMBasicBlockRef LLVMAppendBasicBlock(LLVMValueRef Fn, const char *Name);
LLVMBasicBlockRef LLVMInsertBasicBlock(LLVMBasicBlockRef InsertBeforeBB,
                                       const char *Name);
void LLVMDeleteBasicBlock(LLVMBasicBlockRef BB);

/* Operations on instructions */
LLVMBasicBlockRef LLVMGetInstructionParent(LLVMValueRef Inst);
LLVMValueRef LLVMGetFirstInstruction(LLVMBasicBlockRef BB);
LLVMValueRef LLVMGetLastInstruction(LLVMBasicBlockRef BB);
LLVMValueRef LLVMGetNextInstruction(LLVMValueRef Inst);
LLVMValueRef LLVMGetPreviousInstruction(LLVMValueRef Inst);

/* Operations on call sites */
void LLVMSetInstructionCallConv(LLVMValueRef Instr, unsigned CC);
unsigned LLVMGetInstructionCallConv(LLVMValueRef Instr);
void LLVMAddInstrAttribute(LLVMValueRef Instr, unsigned index, LLVMAttribute);
void LLVMRemoveInstrAttribute(LLVMValueRef Instr, unsigned index, 
                              LLVMAttribute);
void LLVMSetInstrParamAlignment(LLVMValueRef Instr, unsigned index, 
                                unsigned align);

/* Operations on call instructions (only) */
int LLVMIsTailCall(LLVMValueRef CallInst);
void LLVMSetTailCall(LLVMValueRef CallInst, int IsTailCall);

/* Operations on phi nodes */
void LLVMAddIncoming(LLVMValueRef PhiNode, LLVMValueRef *IncomingValues,
                     LLVMBasicBlockRef *IncomingBlocks, unsigned Count);
unsigned LLVMCountIncoming(LLVMValueRef PhiNode);
LLVMValueRef LLVMGetIncomingValue(LLVMValueRef PhiNode, unsigned Index);
LLVMBasicBlockRef LLVMGetIncomingBlock(LLVMValueRef PhiNode, unsigned Index);

/*===-- Instruction builders ----------------------------------------------===*/

/* An instruction builder represents a point within a basic block, and is the
 * exclusive means of building instructions using the C interface.
 */

LLVMBuilderRef LLVMCreateBuilder(void);
void LLVMPositionBuilder(LLVMBuilderRef Builder, LLVMBasicBlockRef Block,
                         LLVMValueRef Instr);
void LLVMPositionBuilderBefore(LLVMBuilderRef Builder, LLVMValueRef Instr);
void LLVMPositionBuilderAtEnd(LLVMBuilderRef Builder, LLVMBasicBlockRef Block);
LLVMBasicBlockRef LLVMGetInsertBlock(LLVMBuilderRef Builder);
void LLVMClearInsertionPosition(LLVMBuilderRef Builder);
void LLVMInsertIntoBuilder(LLVMBuilderRef Builder, LLVMValueRef Instr);
void LLVMDisposeBuilder(LLVMBuilderRef Builder);

/* Terminators */
LLVMValueRef LLVMBuildRetVoid(LLVMBuilderRef);
LLVMValueRef LLVMBuildRet(LLVMBuilderRef, LLVMValueRef V);
LLVMValueRef LLVMBuildBr(LLVMBuilderRef, LLVMBasicBlockRef Dest);
LLVMValueRef LLVMBuildCondBr(LLVMBuilderRef, LLVMValueRef If,
                             LLVMBasicBlockRef Then, LLVMBasicBlockRef Else);
LLVMValueRef LLVMBuildSwitch(LLVMBuilderRef, LLVMValueRef V,
                             LLVMBasicBlockRef Else, unsigned NumCases);
LLVMValueRef LLVMBuildInvoke(LLVMBuilderRef, LLVMValueRef Fn,
                             LLVMValueRef *Args, unsigned NumArgs,
                             LLVMBasicBlockRef Then, LLVMBasicBlockRef Catch,
                             const char *Name);
LLVMValueRef LLVMBuildUnwind(LLVMBuilderRef);
LLVMValueRef LLVMBuildUnreachable(LLVMBuilderRef);

/* Add a case to the switch instruction */
void LLVMAddCase(LLVMValueRef Switch, LLVMValueRef OnVal,
                 LLVMBasicBlockRef Dest);

/* Arithmetic */
LLVMValueRef LLVMBuildAdd(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                          const char *Name);
LLVMValueRef LLVMBuildSub(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                          const char *Name);
LLVMValueRef LLVMBuildMul(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                          const char *Name);
LLVMValueRef LLVMBuildUDiv(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildSDiv(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildFDiv(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildURem(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildSRem(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildFRem(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildShl(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildLShr(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildAShr(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildAnd(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                          const char *Name);
LLVMValueRef LLVMBuildOr(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                          const char *Name);
LLVMValueRef LLVMBuildXor(LLVMBuilderRef, LLVMValueRef LHS, LLVMValueRef RHS,
                          const char *Name);
LLVMValueRef LLVMBuildNeg(LLVMBuilderRef, LLVMValueRef V, const char *Name);
LLVMValueRef LLVMBuildNot(LLVMBuilderRef, LLVMValueRef V, const char *Name);

/* Memory */
LLVMValueRef LLVMBuildMalloc(LLVMBuilderRef, LLVMTypeRef Ty, const char *Name);
LLVMValueRef LLVMBuildArrayMalloc(LLVMBuilderRef, LLVMTypeRef Ty,
                                  LLVMValueRef Val, const char *Name);
LLVMValueRef LLVMBuildAlloca(LLVMBuilderRef, LLVMTypeRef Ty, const char *Name);
LLVMValueRef LLVMBuildArrayAlloca(LLVMBuilderRef, LLVMTypeRef Ty,
                                  LLVMValueRef Val, const char *Name);
LLVMValueRef LLVMBuildFree(LLVMBuilderRef, LLVMValueRef PointerVal);
LLVMValueRef LLVMBuildLoad(LLVMBuilderRef, LLVMValueRef PointerVal,
                           const char *Name);
LLVMValueRef LLVMBuildStore(LLVMBuilderRef, LLVMValueRef Val, LLVMValueRef Ptr);
LLVMValueRef LLVMBuildGEP(LLVMBuilderRef B, LLVMValueRef Pointer,
                          LLVMValueRef *Indices, unsigned NumIndices,
                          const char *Name);

/* Casts */
LLVMValueRef LLVMBuildTrunc(LLVMBuilderRef, LLVMValueRef Val,
                            LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildZExt(LLVMBuilderRef, LLVMValueRef Val,
                           LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildSExt(LLVMBuilderRef, LLVMValueRef Val,
                           LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildFPToUI(LLVMBuilderRef, LLVMValueRef Val,
                             LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildFPToSI(LLVMBuilderRef, LLVMValueRef Val,
                             LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildUIToFP(LLVMBuilderRef, LLVMValueRef Val,
                             LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildSIToFP(LLVMBuilderRef, LLVMValueRef Val,
                             LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildFPTrunc(LLVMBuilderRef, LLVMValueRef Val,
                              LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildFPExt(LLVMBuilderRef, LLVMValueRef Val,
                            LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildPtrToInt(LLVMBuilderRef, LLVMValueRef Val,
                               LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildIntToPtr(LLVMBuilderRef, LLVMValueRef Val,
                               LLVMTypeRef DestTy, const char *Name);
LLVMValueRef LLVMBuildBitCast(LLVMBuilderRef, LLVMValueRef Val,
                              LLVMTypeRef DestTy, const char *Name);

/* Comparisons */
LLVMValueRef LLVMBuildICmp(LLVMBuilderRef, LLVMIntPredicate Op,
                           LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);
LLVMValueRef LLVMBuildFCmp(LLVMBuilderRef, LLVMRealPredicate Op,
                           LLVMValueRef LHS, LLVMValueRef RHS,
                           const char *Name);

/* Miscellaneous instructions */
LLVMValueRef LLVMBuildPhi(LLVMBuilderRef, LLVMTypeRef Ty, const char *Name);
LLVMValueRef LLVMBuildCall(LLVMBuilderRef, LLVMValueRef Fn,
                           LLVMValueRef *Args, unsigned NumArgs,
                           const char *Name);
LLVMValueRef LLVMBuildSelect(LLVMBuilderRef, LLVMValueRef If,
                             LLVMValueRef Then, LLVMValueRef Else,
                             const char *Name);
LLVMValueRef LLVMBuildVAArg(LLVMBuilderRef, LLVMValueRef List, LLVMTypeRef Ty,
                            const char *Name);
LLVMValueRef LLVMBuildExtractElement(LLVMBuilderRef, LLVMValueRef VecVal,
                                     LLVMValueRef Index, const char *Name);
LLVMValueRef LLVMBuildInsertElement(LLVMBuilderRef, LLVMValueRef VecVal,
                                    LLVMValueRef EltVal, LLVMValueRef Index,
                                    const char *Name);
LLVMValueRef LLVMBuildShuffleVector(LLVMBuilderRef, LLVMValueRef V1,
                                    LLVMValueRef V2, LLVMValueRef Mask,
                                    const char *Name);
LLVMValueRef LLVMBuildExtractValue(LLVMBuilderRef, LLVMValueRef AggVal,
                                   unsigned Index, const char *Name);
LLVMValueRef LLVMBuildInsertValue(LLVMBuilderRef, LLVMValueRef AggVal,
                                  LLVMValueRef EltVal, unsigned Index,
                                  const char *Name);


/*===-- Module providers --------------------------------------------------===*/

/* Encapsulates the module M in a module provider, taking ownership of the
 * module.
 * See the constructor llvm::ExistingModuleProvider::ExistingModuleProvider.
 */
LLVMModuleProviderRef
LLVMCreateModuleProviderForExistingModule(LLVMModuleRef M);

/* Destroys the module provider MP as well as the contained module.
 * See the destructor llvm::ModuleProvider::~ModuleProvider.
 */
void LLVMDisposeModuleProvider(LLVMModuleProviderRef MP);


/*===-- Memory buffers ----------------------------------------------------===*/

int LLVMCreateMemoryBufferWithContentsOfFile(const char *Path,
                                             LLVMMemoryBufferRef *OutMemBuf,
                                             char **OutMessage);
int LLVMCreateMemoryBufferWithSTDIN(LLVMMemoryBufferRef *OutMemBuf,
                                    char **OutMessage);
void LLVMDisposeMemoryBuffer(LLVMMemoryBufferRef MemBuf);


/*===-- Pass Managers -----------------------------------------------------===*/

/** Constructs a new whole-module pass pipeline. This type of pipeline is
    suitable for link-time optimization and whole-module transformations.
    See llvm::PassManager::PassManager. */
LLVMPassManagerRef LLVMCreatePassManager(void);

/** Constructs a new function-by-function pass pipeline over the module
    provider. It does not take ownership of the module provider. This type of
    pipeline is suitable for code generation and JIT compilation tasks.
    See llvm::FunctionPassManager::FunctionPassManager. */
LLVMPassManagerRef LLVMCreateFunctionPassManager(LLVMModuleProviderRef MP);

/** Initializes, executes on the provided module, and finalizes all of the
    passes scheduled in the pass manager. Returns 1 if any of the passes
    modified the module, 0 otherwise. See llvm::PassManager::run(Module&). */
int LLVMRunPassManager(LLVMPassManagerRef PM, LLVMModuleRef M);

/** Initializes all of the function passes scheduled in the function pass
    manager. Returns 1 if any of the passes modified the module, 0 otherwise.
    See llvm::FunctionPassManager::doInitialization. */
int LLVMInitializeFunctionPassManager(LLVMPassManagerRef FPM);

/** Executes all of the function passes scheduled in the function pass manager
    on the provided function. Returns 1 if any of the passes modified the
    function, false otherwise.
    See llvm::FunctionPassManager::run(Function&). */
int LLVMRunFunctionPassManager(LLVMPassManagerRef FPM, LLVMValueRef F);

/** Finalizes all of the function passes scheduled in in the function pass
    manager. Returns 1 if any of the passes modified the module, 0 otherwise.
    See llvm::FunctionPassManager::doFinalization. */
int LLVMFinalizeFunctionPassManager(LLVMPassManagerRef FPM);

/** Frees the memory of a pass pipeline. For function pipelines, does not free
    the module provider.
    See llvm::PassManagerBase::~PassManagerBase. */
void LLVMDisposePassManager(LLVMPassManagerRef PM);


#ifdef __cplusplus
}

namespace llvm {
  class ModuleProvider;
  class MemoryBuffer;
  class PassManagerBase;
  
  #define DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref)   \
    inline ty *unwrap(ref P) {                          \
      return reinterpret_cast<ty*>(P);                  \
    }                                                   \
                                                        \
    inline ref wrap(const ty *P) {                      \
      return reinterpret_cast<ref>(const_cast<ty*>(P)); \
    }
  
  #define DEFINE_ISA_CONVERSION_FUNCTIONS(ty, ref)  \
    DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref)         \
                                                        \
    template<typename T>                                \
    inline T *unwrap(ref P) {                           \
      return cast<T>(unwrap(P));                        \
    }
  
  #define DEFINE_STDCXX_CONVERSION_FUNCTIONS(ty, ref)   \
    DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref)         \
                                                        \
    template<typename T>                                \
    inline T *unwrap(ref P) {                           \
      T *Q = dynamic_cast<T*>(unwrap(P));               \
      assert(Q && "Invalid cast!");                     \
      return Q;                                         \
    }
  
  DEFINE_ISA_CONVERSION_FUNCTIONS   (Type,               LLVMTypeRef          )
  DEFINE_ISA_CONVERSION_FUNCTIONS   (Value,              LLVMValueRef         )
  DEFINE_SIMPLE_CONVERSION_FUNCTIONS(Module,             LLVMModuleRef        )
  DEFINE_SIMPLE_CONVERSION_FUNCTIONS(BasicBlock,         LLVMBasicBlockRef    )
  DEFINE_SIMPLE_CONVERSION_FUNCTIONS(IRBuilder<>,        LLVMBuilderRef       )
  DEFINE_SIMPLE_CONVERSION_FUNCTIONS(PATypeHolder,       LLVMTypeHandleRef    )
  DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ModuleProvider,     LLVMModuleProviderRef)
  DEFINE_SIMPLE_CONVERSION_FUNCTIONS(MemoryBuffer,       LLVMMemoryBufferRef  )
  DEFINE_STDCXX_CONVERSION_FUNCTIONS(PassManagerBase,    LLVMPassManagerRef   )
  
  #undef DEFINE_STDCXX_CONVERSION_FUNCTIONS
  #undef DEFINE_ISA_CONVERSION_FUNCTIONS
  #undef DEFINE_SIMPLE_CONVERSION_FUNCTIONS
  
  /* Specialized opaque type conversions.
   */
  inline Type **unwrap(LLVMTypeRef* Tys) {
    return reinterpret_cast<Type**>(Tys);
  }
  
  inline LLVMTypeRef *wrap(const Type **Tys) {
    return reinterpret_cast<LLVMTypeRef*>(const_cast<Type**>(Tys));
  }
  
  /* Specialized opaque value conversions.
   */ 
  inline Value **unwrap(LLVMValueRef *Vals) {
    return reinterpret_cast<Value**>(Vals);
  }
  
  template<typename T>
  inline T **unwrap(LLVMValueRef *Vals, unsigned Length) {
    #if DEBUG
    for (LLVMValueRef *I = Vals, E = Vals + Length; I != E; ++I)
      cast<T>(*I);
    #endif
    return reinterpret_cast<T**>(Vals);
  }
  
  inline LLVMValueRef *wrap(const Value **Vals) {
    return reinterpret_cast<LLVMValueRef*>(const_cast<Value**>(Vals));
  }
}

#endif /* !defined(__cplusplus) */

#endif /* !defined(LLVM_C_CORE_H) */