| //===- 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 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, |
| Returned, |
| ReadOnly, |
| WriteOnly, |
| ReadNone, |
| ImmArg |
| }; |
| |
| std::vector<std::pair<unsigned, ArgAttribute>> ArgumentAttributes; |
| |
| bool hasProperty(enum SDNP Prop) const { |
| return Properties & (1 << Prop); |
| } |
| |
| 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 |