1 //===-- llvm/Target/TargetIntrinsicInfo.h - Instruction Info ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file describes the target intrinsic instructions to the code generator.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_TARGET_TARGETINTRINSICINFO_H
15 #define LLVM_TARGET_TARGETINTRINSICINFO_H
17 #include "llvm/Support/Compiler.h"
26 //---------------------------------------------------------------------------
28 /// TargetIntrinsicInfo - Interface to description of machine instruction set
30 class TargetIntrinsicInfo {
31 TargetIntrinsicInfo(const TargetIntrinsicInfo &) = delete;
32 void operator=(const TargetIntrinsicInfo &) = delete;
34 TargetIntrinsicInfo();
35 virtual ~TargetIntrinsicInfo();
37 /// Return the name of a target intrinsic, e.g. "llvm.bfin.ssync".
38 /// The Tys and numTys parameters are for intrinsics with overloaded types
39 /// (e.g., those using iAny or fAny). For a declaration for an overloaded
40 /// intrinsic, Tys should point to an array of numTys pointers to Type,
41 /// and must provide exactly one type for each overloaded type in the
43 virtual std::string getName(unsigned IID, Type **Tys = nullptr,
44 unsigned numTys = 0) const = 0;
46 /// Look up target intrinsic by name. Return intrinsic ID or 0 for unknown
48 virtual unsigned lookupName(const char *Name, unsigned Len) const =0;
50 /// Return the target intrinsic ID of a function, or 0.
51 virtual unsigned getIntrinsicID(Function *F) const;
53 /// Returns true if the intrinsic can be overloaded.
54 virtual bool isOverloaded(unsigned IID) const = 0;
56 /// Create or insert an LLVM Function declaration for an intrinsic,
57 /// and return it. The Tys and numTys are for intrinsics with overloaded
58 /// types. See above for more information.
59 virtual Function *getDeclaration(Module *M, unsigned ID, Type **Tys = nullptr,
60 unsigned numTys = 0) const = 0;
63 } // End llvm namespace