1 //===-- CodeGen/RuntimeLibcalls.h - Runtime Library Calls -------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file defines the enum representing the list of runtime library calls
10 // the backend may emit during code generation, and also some helper functions.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CODEGEN_RUNTIMELIBCALLS_H
15 #define LLVM_CODEGEN_RUNTIMELIBCALLS_H
16 
17 #include "llvm/CodeGen/ValueTypes.h"
18 
19 namespace llvm {
20 namespace RTLIB {
21   /// RTLIB::Libcall enum - This enum defines all of the runtime library calls
22   /// the backend can emit.  The various long double types cannot be merged,
23   /// because 80-bit library functions use "xf" and 128-bit use "tf".
24   ///
25   /// When adding PPCF128 functions here, note that their names generally need
26   /// to be overridden for Darwin with the xxx$LDBL128 form.  See
27   /// PPCISelLowering.cpp.
28   ///
29   enum Libcall {
30 #define HANDLE_LIBCALL(code, name) code,
31     #include "llvm/IR/RuntimeLibcalls.def"
32 #undef HANDLE_LIBCALL
33   };
34 
35   /// getFPEXT - Return the FPEXT_*_* value for the given types, or
36   /// UNKNOWN_LIBCALL if there is none.
37   Libcall getFPEXT(EVT OpVT, EVT RetVT);
38 
39   /// getFPROUND - Return the FPROUND_*_* value for the given types, or
40   /// UNKNOWN_LIBCALL if there is none.
41   Libcall getFPROUND(EVT OpVT, EVT RetVT);
42 
43   /// getFPTOSINT - Return the FPTOSINT_*_* value for the given types, or
44   /// UNKNOWN_LIBCALL if there is none.
45   Libcall getFPTOSINT(EVT OpVT, EVT RetVT);
46 
47   /// getFPTOUINT - Return the FPTOUINT_*_* value for the given types, or
48   /// UNKNOWN_LIBCALL if there is none.
49   Libcall getFPTOUINT(EVT OpVT, EVT RetVT);
50 
51   /// getSINTTOFP - Return the SINTTOFP_*_* value for the given types, or
52   /// UNKNOWN_LIBCALL if there is none.
53   Libcall getSINTTOFP(EVT OpVT, EVT RetVT);
54 
55   /// getUINTTOFP - Return the UINTTOFP_*_* value for the given types, or
56   /// UNKNOWN_LIBCALL if there is none.
57   Libcall getUINTTOFP(EVT OpVT, EVT RetVT);
58 
59   /// Return the SYNC_FETCH_AND_* value for the given opcode and type, or
60   /// UNKNOWN_LIBCALL if there is none.
61   Libcall getSYNC(unsigned Opc, MVT VT);
62 
63   /// getMEMCPY_ELEMENT_UNORDERED_ATOMIC - Return
64   /// MEMCPY_ELEMENT_UNORDERED_ATOMIC_* value for the given element size or
65   /// UNKNOW_LIBCALL if there is none.
66   Libcall getMEMCPY_ELEMENT_UNORDERED_ATOMIC(uint64_t ElementSize);
67 
68   /// getMEMMOVE_ELEMENT_UNORDERED_ATOMIC - Return
69   /// MEMMOVE_ELEMENT_UNORDERED_ATOMIC_* value for the given element size or
70   /// UNKNOW_LIBCALL if there is none.
71   Libcall getMEMMOVE_ELEMENT_UNORDERED_ATOMIC(uint64_t ElementSize);
72 
73   /// getMEMSET_ELEMENT_UNORDERED_ATOMIC - Return
74   /// MEMSET_ELEMENT_UNORDERED_ATOMIC_* value for the given element size or
75   /// UNKNOW_LIBCALL if there is none.
76   Libcall getMEMSET_ELEMENT_UNORDERED_ATOMIC(uint64_t ElementSize);
77 
78 }
79 }
80 
81 #endif
82