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This will be used by the upcoming llvm.noalias intrinsic. Differential Revision: http://reviews.llvm.org/D22201 llvm-svn: 275034
123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
//===- CodeGenIntrinsic.h - Intrinsic Class Wrapper ------------*- C++ -*--===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a wrapper class for the 'Intrinsic' TableGen class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_UTILS_TABLEGEN_CODEGENINTRINSICS_H
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#define LLVM_UTILS_TABLEGEN_CODEGENINTRINSICS_H
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#include "llvm/CodeGen/MachineValueType.h"
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#include <string>
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#include <vector>
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namespace llvm {
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class Record;
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class RecordKeeper;
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class CodeGenTarget;
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struct CodeGenIntrinsic {
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Record *TheDef; // The actual record defining this intrinsic.
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std::string Name; // The name of the LLVM function "llvm.bswap.i32"
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std::string EnumName; // The name of the enum "bswap_i32"
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std::string GCCBuiltinName; // Name of the corresponding GCC builtin, or "".
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std::string MSBuiltinName; // Name of the corresponding MS builtin, or "".
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std::string TargetPrefix; // Target prefix, e.g. "ppc" for t-s intrinsics.
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/// This structure holds the return values and parameter values of an
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/// intrinsic. If the number of return values is > 1, then the intrinsic
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/// implicitly returns a first-class aggregate. The numbering of the types
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/// starts at 0 with the first return value and continues from there through
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/// the parameter list. This is useful for "matching" types.
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struct IntrinsicSignature {
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/// The MVT::SimpleValueType for each return type. Note that this list is
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/// only populated when in the context of a target .td file. When building
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/// Intrinsics.td, this isn't available, because we don't know the target
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/// pointer size.
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std::vector<MVT::SimpleValueType> RetVTs;
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/// The records for each return type.
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std::vector<Record *> RetTypeDefs;
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/// The MVT::SimpleValueType for each parameter type. Note that this list is
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/// only populated when in the context of a target .td file. When building
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/// Intrinsics.td, this isn't available, because we don't know the target
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/// pointer size.
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std::vector<MVT::SimpleValueType> ParamVTs;
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/// The records for each parameter type.
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std::vector<Record *> ParamTypeDefs;
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};
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IntrinsicSignature IS;
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/// Bit flags describing the type (ref/mod) and location of memory
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/// accesses that may be performed by the intrinsics. Analogous to
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/// \c FunctionModRefBehaviour.
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enum ModRefBits {
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/// The intrinsic may access memory anywhere, i.e. it is not restricted
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/// to access through pointer arguments.
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MR_Anywhere = 1,
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/// The intrinsic may read memory.
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MR_Ref = 2,
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/// The intrinsic may write memory.
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MR_Mod = 4,
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/// The intrinsic may both read and write memory.
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MR_ModRef = MR_Ref | MR_Mod,
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};
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/// Memory mod/ref behavior of this intrinsic, corresponding to intrinsic
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/// properties (IntrReadMem, IntrArgMemOnly, etc.).
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enum ModRefBehavior {
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NoMem = 0,
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ReadArgMem = MR_Ref,
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ReadMem = MR_Ref | MR_Anywhere,
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WriteArgMem = MR_Mod,
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WriteMem = MR_Mod | MR_Anywhere,
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ReadWriteArgMem = MR_ModRef,
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ReadWriteMem = MR_ModRef | MR_Anywhere,
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};
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ModRefBehavior ModRef;
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/// This is set to true if the intrinsic is overloaded by its argument
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/// types.
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bool isOverloaded;
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/// True if the intrinsic is commutative.
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bool isCommutative;
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/// True if the intrinsic can throw.
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bool canThrow;
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/// True if the intrinsic is marked as noduplicate.
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bool isNoDuplicate;
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/// True if the intrinsic is no-return.
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bool isNoReturn;
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/// True if the intrinsic is marked as convergent.
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bool isConvergent;
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enum ArgAttribute { NoCapture, Returned, ReadOnly, WriteOnly, ReadNone };
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std::vector<std::pair<unsigned, ArgAttribute>> ArgumentAttributes;
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CodeGenIntrinsic(Record *R);
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};
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/// Read all of the intrinsics defined in the specified .td file.
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std::vector<CodeGenIntrinsic> LoadIntrinsics(const RecordKeeper &RC,
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bool TargetOnly);
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}
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#endif
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