TargetIntrinsicInfo.h revision 198953 
1//===-- llvm/Target/TargetIntrinsicInfo.h - Instruction Info ----*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file describes the target intrinsic instructions to the code generator.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_TARGET_TARGETINTRINSICINFO_H
15#define LLVM_TARGET_TARGETINTRINSICINFO_H
16
17#include <string>
18
19namespace llvm {
20
21class Function;
22class Module;
23class Type;
24
25//---------------------------------------------------------------------------
26///
27/// TargetIntrinsicInfo - Interface to description of machine instruction set
28///
29class TargetIntrinsicInfo {
30  TargetIntrinsicInfo(const TargetIntrinsicInfo &); // DO NOT IMPLEMENT
31  void operator=(const TargetIntrinsicInfo &);      // DO NOT IMPLEMENT
32public:
33  TargetIntrinsicInfo();
34  virtual ~TargetIntrinsicInfo();
35
36  /// Return the name of a target intrinsic, e.g. "llvm.bfin.ssync".
37  /// The Tys and numTys parameters are for intrinsics with overloaded types
38  /// (e.g., those using iAny or fAny). For a declaration for an overloaded
39  /// intrinsic, Tys should point to an array of numTys pointers to Type,
40  /// and must provide exactly one type for each overloaded type in the
41  /// intrinsic.
42  virtual std::string getName(unsigned IID, const Type **Tys = 0,
43                              unsigned numTys = 0) const = 0;
44
45  /// Look up target intrinsic by name. Return intrinsic ID or 0 for unknown
46  /// names.
47  virtual unsigned lookupName(const char *Name, unsigned Len) const =0;
48
49  /// Return the target intrinsic ID of a function, or 0.
50  virtual unsigned getIntrinsicID(Function *F) const;
51
52  /// Returns true if the intrinsic can be overloaded.
53  virtual bool isOverloaded(unsigned IID) const = 0;
54
55  /// Create or insert an LLVM Function declaration for an intrinsic,
56  /// and return it. The Tys and numTys are for intrinsics with overloaded
57  /// types. See above for more information.
58  virtual Function *getDeclaration(Module *M, unsigned ID, const Type **Tys = 0,
59                                   unsigned numTys = 0) const = 0;
60};
61
62} // End llvm namespace
63
64#endif
65