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//===-- llvm/Instrinsics.h - LLVM Intrinsic Function Handling ---*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a set of enums which allow processing of intrinsic
// functions. Values of these enum types are returned by
// Function::getIntrinsicID.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_INTRINSICS_H
#define LLVM_IR_INTRINSICS_H
#include "llvm/ADT/ArrayRef.h"
#include <string>
namespace llvm {
class Type;
class FunctionType;
class Function;
class LLVMContext;
class Module;
class AttributeSet;
/// This namespace contains an enum with a value for every intrinsic/builtin
/// function known by LLVM. The enum values are returned by
/// Function::getIntrinsicID().
namespace Intrinsic {
enum ID {
not_intrinsic = 0, // Must be zero
// Get the intrinsic enums generated from Intrinsics.td
#define GET_INTRINSIC_ENUM_VALUES
#include "llvm/IR/Intrinsics.gen"
#undef GET_INTRINSIC_ENUM_VALUES
, num_intrinsics
};
/// Return the LLVM name for an intrinsic, such as "llvm.ppc.altivec.lvx".
std::string getName(ID id, ArrayRef<Type*> Tys = None);
/// Return the function type for an intrinsic.
FunctionType *getType(LLVMContext &Context, ID id,
ArrayRef<Type*> Tys = None);
/// Returns true if the intrinsic can be overloaded.
bool isOverloaded(ID id);
/// Return the attributes for an intrinsic.
AttributeSet getAttributes(LLVMContext &C, ID id);
/// Create or insert an LLVM Function declaration for an intrinsic, and return
/// it.
///
/// The Tys parameter is for intrinsics with overloaded types (e.g., those
/// using iAny, fAny, vAny, or iPTRAny). For a declaration of an overloaded
/// intrinsic, Tys must provide exactly one type for each overloaded type in
/// the intrinsic.
Function *getDeclaration(Module *M, ID id, ArrayRef<Type*> Tys = None);
/// Map a GCC builtin name to an intrinsic ID.
ID getIntrinsicForGCCBuiltin(const char *Prefix, const char *BuiltinName);
/// Map a MS builtin name to an intrinsic ID.
ID getIntrinsicForMSBuiltin(const char *Prefix, const char *BuiltinName);
/// This is a type descriptor which explains the type requirements of an
/// intrinsic. This is returned by getIntrinsicInfoTableEntries.
struct IITDescriptor {
enum IITDescriptorKind {
Void, VarArg, MMX, Metadata, Half, Float, Double,
Integer, Vector, Pointer, Struct,
Argument, ExtendArgument, TruncArgument, HalfVecArgument
} Kind;
union {
unsigned Integer_Width;
unsigned Float_Width;
unsigned Vector_Width;
unsigned Pointer_AddressSpace;
unsigned Struct_NumElements;
unsigned Argument_Info;
};
enum ArgKind {
AK_AnyInteger,
AK_AnyFloat,
AK_AnyVector,
AK_AnyPointer
};
unsigned getArgumentNumber() const {
assert(Kind == Argument || Kind == ExtendArgument ||
Kind == TruncArgument || Kind == HalfVecArgument);
return Argument_Info >> 2;
}
ArgKind getArgumentKind() const {
assert(Kind == Argument || Kind == ExtendArgument ||
Kind == TruncArgument || Kind == HalfVecArgument);
return (ArgKind)(Argument_Info&3);
}
static IITDescriptor get(IITDescriptorKind K, unsigned Field) {
IITDescriptor Result = { K, { Field } };
return Result;
}
};
/// Return the IIT table descriptor for the specified intrinsic into an array
/// of IITDescriptors.
void getIntrinsicInfoTableEntries(ID id, SmallVectorImpl<IITDescriptor> &T);
} // End Intrinsic namespace
} // End llvm namespace
#endif
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