libc/src/__support/GPU/generic/utils.h

   1 //===-------------- Generic implementation of GPU utils ---------*- 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 #ifndef LLVM_LIBC_SRC___SUPPORT_GPU_GENERIC_IO_H
  10 #define LLVM_LIBC_SRC___SUPPORT_GPU_GENERIC_IO_H
  11
  12 #include "src/__support/common.h"
  13
  14 #include <stdint.h>
  15
  16 namespace LIBC_NAMESPACE {
  17 namespace gpu {
  18
  19 constexpr const uint64_t LANE_SIZE = 1;
  20
  21 template <typename T> using Private = T;
  22 template <typename T> using Constant = T;
  23 template <typename T> using Shared = T;
  24 template <typename T> using Global = T;
  25
  26 LIBC_INLINE uint32_t get_num_blocks_x() { return 1; }
  27
  28 LIBC_INLINE uint32_t get_num_blocks_y() { return 1; }
  29
  30 LIBC_INLINE uint32_t get_num_blocks_z() { return 1; }
  31
  32 LIBC_INLINE uint64_t get_num_blocks() { return 1; }
  33
  34 LIBC_INLINE uint32_t get_block_id_x() { return 0; }
  35
  36 LIBC_INLINE uint32_t get_block_id_y() { return 0; }
  37
  38 LIBC_INLINE uint32_t get_block_id_z() { return 0; }
  39
  40 LIBC_INLINE uint64_t get_block_id() { return 0; }
  41
  42 LIBC_INLINE uint32_t get_num_threads_x() { return 1; }
  43
  44 LIBC_INLINE uint32_t get_num_threads_y() { return 1; }
  45
  46 LIBC_INLINE uint32_t get_num_threads_z() { return 1; }
  47
  48 LIBC_INLINE uint64_t get_num_threads() { return 1; }
  49
  50 LIBC_INLINE uint32_t get_thread_id_x() { return 0; }
  51
  52 LIBC_INLINE uint32_t get_thread_id_y() { return 0; }
  53
  54 LIBC_INLINE uint32_t get_thread_id_z() { return 0; }
  55
  56 LIBC_INLINE uint64_t get_thread_id() { return 0; }
  57
  58 LIBC_INLINE uint32_t get_lane_size() { return LANE_SIZE; }
  59
  60 LIBC_INLINE uint32_t get_lane_id() { return 0; }
  61
  62 LIBC_INLINE uint64_t get_lane_mask() { return 1; }
  63
  64 LIBC_INLINE uint32_t broadcast_value(uint64_t, uint32_t x) { return x; }
  65
  66 LIBC_INLINE uint64_t ballot(uint64_t, bool x) { return x; }
  67
  68 LIBC_INLINE void sync_threads() {}
  69
  70 LIBC_INLINE void sync_lane(uint64_t) {}
  71
  72 LIBC_INLINE uint64_t processor_clock() { return 0; }
  73
  74 LIBC_INLINE uint64_t fixed_frequency_clock() { return 0; }
  75
  76 [[noreturn]] LIBC_INLINE void end_program() { __builtin_unreachable(); }
  77
  78 } // namespace gpu
  79 } // namespace LIBC_NAMESPACE
  80
  81 #endif