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//===- CodeGenIntrinsic.h - Intrinsic Class Wrapper ------------*- 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 wrapper class for the 'Intrinsic' TableGen class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_UTILS_TABLEGEN_CODEGENINTRINSICS_H
#define LLVM_UTILS_TABLEGEN_CODEGENINTRINSICS_H
#include "llvm/CodeGen/MachineValueType.h"
#include <string>
#include <vector>
namespace llvm {
class Record;
class RecordKeeper;
class CodeGenTarget;
struct CodeGenIntrinsic {
Record *TheDef; // The actual record defining this intrinsic.
std::string Name; // The name of the LLVM function "llvm.bswap.i32"
std::string EnumName; // The name of the enum "bswap_i32"
std::string GCCBuiltinName;// Name of the corresponding GCC builtin, or "".
std::string MSBuiltinName; // Name of the corresponding MS builtin, or "".
std::string TargetPrefix; // Target prefix, e.g. "ppc" for t-s intrinsics.
/// IntrinsicSignature - This structure holds the return values and
/// parameter values of an intrinsic. If the number of return values is > 1,
/// then the intrinsic implicitly returns a first-class aggregate. The
/// numbering of the types starts at 0 with the first return value and
/// continues from there through the parameter list. This is useful for
/// "matching" types.
struct IntrinsicSignature {
/// RetVTs - The MVT::SimpleValueType for each return type. Note that this
/// list is only populated when in the context of a target .td file. When
/// building Intrinsics.td, this isn't available, because we don't know
/// the target pointer size.
std::vector<MVT::SimpleValueType> RetVTs;
/// RetTypeDefs - The records for each return type.
std::vector<Record*> RetTypeDefs;
/// ParamVTs - The MVT::SimpleValueType for each parameter type. Note that
/// this list is only populated when in the context of a target .td file.
/// When building Intrinsics.td, this isn't available, because we don't
/// know the target pointer size.
std::vector<MVT::SimpleValueType> ParamVTs;
/// ParamTypeDefs - The records for each parameter type.
std::vector<Record*> ParamTypeDefs;
};
IntrinsicSignature IS;
/// Bit flags describing the type (ref/mod) and location of memory
/// accesses that may be performed by the intrinsics. Analogous to
/// \c FunctionModRefBehaviour.
enum ModRefBits {
/// The intrinsic may access memory anywhere, i.e. it is not restricted
/// to access through pointer arguments.
MR_Anywhere = 1,
/// The intrinsic may read memory.
MR_Ref = 2,
/// The intrinsic may write memory.
MR_Mod = 4,
/// The intrinsic may both read and write memory.
MR_ModRef = MR_Ref | MR_Mod,
};
/// Memory mod/ref behavior of this intrinsic, corresponding to
/// intrinsic properties (IntrReadMem, IntrReadArgMem, etc.).
enum ModRefBehavior {
NoMem = 0,
ReadArgMem = MR_Ref,
ReadMem = MR_Ref | MR_Anywhere,
WriteArgMem = MR_Mod,
WriteMem = MR_Mod | MR_Anywhere,
ReadWriteArgMem = MR_ModRef,
ReadWriteMem = MR_ModRef | MR_Anywhere,
};
ModRefBehavior ModRef;
/// This is set to true if the intrinsic is overloaded by its argument
/// types.
bool isOverloaded;
/// isCommutative - True if the intrinsic is commutative.
bool isCommutative;
/// canThrow - True if the intrinsic can throw.
bool canThrow;
/// isNoDuplicate - True if the intrinsic is marked as noduplicate.
bool isNoDuplicate;
/// isNoReturn - True if the intrinsic is no-return.
bool isNoReturn;
/// isConvergent - True if the intrinsic is marked as convergent.
bool isConvergent;
enum ArgAttribute {
NoCapture,
ReadOnly,
ReadNone
};
std::vector<std::pair<unsigned, ArgAttribute> > ArgumentAttributes;
CodeGenIntrinsic(Record *R);
};
/// LoadIntrinsics - Read all of the intrinsics defined in the specified
/// .td file.
std::vector<CodeGenIntrinsic> LoadIntrinsics(const RecordKeeper &RC,
bool TargetOnly);
}
#endif
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