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| //===- CodeGenIntrinsic.h - Intrinsic Class Wrapper ------------*- C++ -*--===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines a wrapper class for the 'Intrinsic' TableGen class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_UTILS_TABLEGEN_CODEGENINTRINSICS_H
#define LLVM_UTILS_TABLEGEN_CODEGENINTRINSICS_H
#include "SDNodeProperties.h"
#include "llvm/Support/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.
/// 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 {
/// 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;
/// The records for each return type.
std::vector<Record *> RetTypeDefs;
/// 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;
/// 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 that is otherwise inaccessible via
/// LLVM IR.
MR_InaccessibleMem = 1,
/// The intrinsic may access memory through pointer arguments.
/// LLVM IR.
MR_ArgMem = 2,
/// The intrinsic may access memory anywhere, i.e. it is not restricted
/// to access through pointer arguments.
MR_Anywhere = 4 | MR_ArgMem | MR_InaccessibleMem,
/// The intrinsic may read memory.
MR_Ref = 8,
/// The intrinsic may write memory.
MR_Mod = 16,
/// 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, IntrArgMemOnly, etc.).
enum ModRefBehavior {
NoMem = 0,
ReadArgMem = MR_Ref | MR_ArgMem,
ReadInaccessibleMem = MR_Ref | MR_InaccessibleMem,
ReadInaccessibleMemOrArgMem = MR_Ref | MR_ArgMem | MR_InaccessibleMem,
ReadMem = MR_Ref | MR_Anywhere,
WriteArgMem = MR_Mod | MR_ArgMem,
WriteInaccessibleMem = MR_Mod | MR_InaccessibleMem,
WriteInaccessibleMemOrArgMem = MR_Mod | MR_ArgMem | MR_InaccessibleMem,
WriteMem = MR_Mod | MR_Anywhere,
ReadWriteArgMem = MR_ModRef | MR_ArgMem,
ReadWriteInaccessibleMem = MR_ModRef | MR_InaccessibleMem,
ReadWriteInaccessibleMemOrArgMem = MR_ModRef | MR_ArgMem |
MR_InaccessibleMem,
ReadWriteMem = MR_ModRef | MR_Anywhere,
};
ModRefBehavior ModRef;
/// SDPatternOperator Properties applied to the intrinsic.
unsigned Properties;
/// This is set to true if the intrinsic is overloaded by its argument
/// types.
bool isOverloaded;
/// True if the intrinsic is commutative.
bool isCommutative;
/// True if the intrinsic can throw.
bool canThrow;
/// True if the intrinsic is marked as noduplicate.
bool isNoDuplicate;
/// True if the intrinsic is no-return.
bool isNoReturn;
/// True if the intrinsic is will-return.
bool isWillReturn;
/// True if the intrinsic is cold.
bool isCold;
/// True if the intrinsic is marked as convergent.
bool isConvergent;
/// True if the intrinsic has side effects that aren't captured by any
/// of the other flags.
bool hasSideEffects;
// True if the intrinsic is marked as speculatable.
bool isSpeculatable;
enum ArgAttribute {
NoCapture,
NoAlias,
Returned,
ReadOnly,
WriteOnly,
ReadNone,
ImmArg
};
std::vector<std::pair<unsigned, ArgAttribute>> ArgumentAttributes;
bool hasProperty(enum SDNP Prop) const {
return Properties & (1 << Prop);
}
/// Returns true if the parameter at \p ParamIdx is a pointer type. Returns
/// false if the parameter is not a pointer, or \p ParamIdx is greater than
/// the size of \p IS.ParamVTs.
///
/// Note that this requires that \p IS.ParamVTs is available.
bool isParamAPointer(unsigned ParamIdx) const;
CodeGenIntrinsic(Record *R);
};
class CodeGenIntrinsicTable {
std::vector<CodeGenIntrinsic> Intrinsics;
public:
struct TargetSet {
std::string Name;
size_t Offset;
size_t Count;
};
std::vector<TargetSet> Targets;
explicit CodeGenIntrinsicTable(const RecordKeeper &RC, bool TargetOnly);
CodeGenIntrinsicTable() = default;
bool empty() const { return Intrinsics.empty(); }
size_t size() const { return Intrinsics.size(); }
CodeGenIntrinsic &operator[](size_t Pos) { return Intrinsics[Pos]; }
const CodeGenIntrinsic &operator[](size_t Pos) const {
return Intrinsics[Pos];
}
};
}
#endif
|