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      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 #include "llvm/Support/AtomicOrdering.h"
     19 
     20 namespace llvm {
     21 namespace RTLIB {
     22   /// RTLIB::Libcall enum - This enum defines all of the runtime library calls
     23   /// the backend can emit.  The various long double types cannot be merged,
     24   /// because 80-bit library functions use "xf" and 128-bit use "tf".
     25   ///
     26   /// When adding PPCF128 functions here, note that their names generally need
     27   /// to be overridden for Darwin with the xxx$LDBL128 form.  See
     28   /// PPCISelLowering.cpp.
     29   ///
     30   enum Libcall {
     31 #define HANDLE_LIBCALL(code, name) code,
     32     #include "llvm/IR/RuntimeLibcalls.def"
     33 #undef HANDLE_LIBCALL
     34   };
     35 
     36   /// getFPEXT - Return the FPEXT_*_* value for the given types, or
     37   /// UNKNOWN_LIBCALL if there is none.
     38   Libcall getFPEXT(EVT OpVT, EVT RetVT);
     39 
     40   /// getFPROUND - Return the FPROUND_*_* value for the given types, or
     41   /// UNKNOWN_LIBCALL if there is none.
     42   Libcall getFPROUND(EVT OpVT, EVT RetVT);
     43 
     44   /// getFPTOSINT - Return the FPTOSINT_*_* value for the given types, or
     45   /// UNKNOWN_LIBCALL if there is none.
     46   Libcall getFPTOSINT(EVT OpVT, EVT RetVT);
     47 
     48   /// getFPTOUINT - Return the FPTOUINT_*_* value for the given types, or
     49   /// UNKNOWN_LIBCALL if there is none.
     50   Libcall getFPTOUINT(EVT OpVT, EVT RetVT);
     51 
     52   /// getSINTTOFP - Return the SINTTOFP_*_* value for the given types, or
     53   /// UNKNOWN_LIBCALL if there is none.
     54   Libcall getSINTTOFP(EVT OpVT, EVT RetVT);
     55 
     56   /// getUINTTOFP - Return the UINTTOFP_*_* value for the given types, or
     57   /// UNKNOWN_LIBCALL if there is none.
     58   Libcall getUINTTOFP(EVT OpVT, EVT RetVT);
     59 
     60   /// Return the SYNC_FETCH_AND_* value for the given opcode and type, or
     61   /// UNKNOWN_LIBCALL if there is none.
     62   Libcall getSYNC(unsigned Opc, MVT VT);
     63 
     64   /// Return the outline atomics value for the given opcode, atomic ordering
     65   /// and type, or UNKNOWN_LIBCALL if there is none.
     66   Libcall getOUTLINE_ATOMIC(unsigned Opc, AtomicOrdering Order, MVT VT);
     67 
     68   /// getMEMCPY_ELEMENT_UNORDERED_ATOMIC - Return
     69   /// MEMCPY_ELEMENT_UNORDERED_ATOMIC_* value for the given element size or
     70   /// UNKNOW_LIBCALL if there is none.
     71   Libcall getMEMCPY_ELEMENT_UNORDERED_ATOMIC(uint64_t ElementSize);
     72 
     73   /// getMEMMOVE_ELEMENT_UNORDERED_ATOMIC - Return
     74   /// MEMMOVE_ELEMENT_UNORDERED_ATOMIC_* value for the given element size or
     75   /// UNKNOW_LIBCALL if there is none.
     76   Libcall getMEMMOVE_ELEMENT_UNORDERED_ATOMIC(uint64_t ElementSize);
     77 
     78   /// getMEMSET_ELEMENT_UNORDERED_ATOMIC - Return
     79   /// MEMSET_ELEMENT_UNORDERED_ATOMIC_* value for the given element size or
     80   /// UNKNOW_LIBCALL if there is none.
     81   Libcall getMEMSET_ELEMENT_UNORDERED_ATOMIC(uint64_t ElementSize);
     82 
     83 }
     84 }
     85 
     86 #endif
     87