offload/include/rtl.h

   1 //===------------ rtl.h - Target independent OpenMP target RTL ------------===//
   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 // Declarations for handling RTL plugins.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef _OMPTARGET_RTL_H
  14 #define _OMPTARGET_RTL_H
  15
  16 #include "llvm/ADT/SmallVector.h"
  17
  18 #include "omptarget.h"
  19
  20 #include <cstdint>
  21 #include <map>
  22
  23 /// Map between the host entry begin and the translation table. Each
  24 /// registered library gets one TranslationTable. Use the map from
  25 /// __tgt_offload_entry so that we may quickly determine whether we
  26 /// are trying to (re)register an existing lib or really have a new one.
  27 struct TranslationTable {
  28   __tgt_target_table HostTable;
  29   llvm::SmallVector<__tgt_target_table> DeviceTables;
  30
  31   // Image assigned to a given device.
  32   llvm::SmallVector<__tgt_device_image *>
  33       TargetsImages; // One image per device ID.
  34
  35   // Arrays of entries active on the device.
  36   llvm::SmallVector<llvm::SmallVector<__tgt_offload_entry>>
  37       TargetsEntries; // One table per device ID.
  38
  39   // Table of entry points or NULL if it was not already computed.
  40   llvm::SmallVector<__tgt_target_table *>
  41       TargetsTable; // One table per device ID.
  42 };
  43 typedef std::map<__tgt_offload_entry *, TranslationTable>
  44     HostEntriesBeginToTransTableTy;
  45
  46 /// Map between the host ptr and a table index
  47 struct TableMap {
  48   TranslationTable *Table = nullptr; // table associated with the host ptr.
  49   uint32_t Index = 0; // index in which the host ptr translated entry is found.
  50   TableMap() = default;
  51   TableMap(TranslationTable *Table, uint32_t Index)
  52       : Table(Table), Index(Index) {}
  53 };
  54 typedef std::map<void *, TableMap> HostPtrToTableMapTy;
  55
  56 #endif