src/amd/vulkan/radv_llvm_helper.cpp

   1 /*
   2  * Copyright © 2018 Red Hat.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23 #include "ac_llvm_util.h"
  24 #include "ac_llvm_build.h"
  25 #include "radv_shader_helper.h"
  26
  27 #include <list>
  28 class radv_llvm_per_thread_info {
  29 public:
  30         radv_llvm_per_thread_info(enum radeon_family arg_family,
  31                                 enum ac_target_machine_options arg_tm_options,
  32                                 unsigned arg_wave_size)
  33                 : family(arg_family), tm_options(arg_tm_options),
  34                   wave_size(arg_wave_size), passes(NULL), passes_wave32(NULL) {}
  35
  36         ~radv_llvm_per_thread_info()
  37         {
  38                 ac_destroy_llvm_compiler(&llvm_info);
  39         }
  40
  41         bool init(void)
  42         {
  43                 if (!ac_init_llvm_compiler(&llvm_info,
  44                                           family,
  45                                           tm_options))
  46                         return false;
  47
  48                 passes = ac_create_llvm_passes(llvm_info.tm);
  49                 if (!passes)
  50                         return false;
  51
  52                 if (llvm_info.tm_wave32) {
  53                         passes_wave32 = ac_create_llvm_passes(llvm_info.tm_wave32);
  54                         if (!passes_wave32)
  55                                 return false;
  56                 }
  57
  58                 return true;
  59         }
  60
  61         bool compile_to_memory_buffer(LLVMModuleRef module,
  62                                       char **pelf_buffer, size_t *pelf_size)
  63         {
  64                 struct ac_compiler_passes *p = wave_size == 32 ? passes_wave32 : passes;
  65                 return ac_compile_module_to_elf(p, module, pelf_buffer, pelf_size);
  66         }
  67
  68         bool is_same(enum radeon_family arg_family,
  69                      enum ac_target_machine_options arg_tm_options,
  70                      unsigned arg_wave_size) {
  71                 if (arg_family == family &&
  72                     arg_tm_options == tm_options &&
  73                     arg_wave_size == wave_size)
  74                         return true;
  75                 return false;
  76         }
  77         struct ac_llvm_compiler llvm_info;
  78 private:
  79         enum radeon_family family;
  80         enum ac_target_machine_options tm_options;
  81         unsigned wave_size;
  82         struct ac_compiler_passes *passes;
  83         struct ac_compiler_passes *passes_wave32;
  84 };
  85
  86 /* we have to store a linked list per thread due to the possiblity of multiple gpus being required */
  87 static thread_local std::list<radv_llvm_per_thread_info> radv_llvm_per_thread_list;
  88
  89 bool radv_compile_to_elf(struct ac_llvm_compiler *info,
  90                         LLVMModuleRef module,
  91                         char **pelf_buffer, size_t *pelf_size)
  92 {
  93         radv_llvm_per_thread_info *thread_info = nullptr;
  94
  95         for (auto &I : radv_llvm_per_thread_list) {
  96                 if (I.llvm_info.tm == info->tm) {
  97                         thread_info = &I;
  98                         break;
  99                 }
 100         }
 101
 102         if (!thread_info) {
 103                 struct ac_compiler_passes *passes = ac_create_llvm_passes(info->tm);
 104                 bool ret = ac_compile_module_to_elf(passes, module, pelf_buffer, pelf_size);
 105                 ac_destroy_llvm_passes(passes);
 106                 return ret;
 107         }
 108
 109         return thread_info->compile_to_memory_buffer(module, pelf_buffer, pelf_size);
 110 }
 111
 112 bool radv_init_llvm_compiler(struct ac_llvm_compiler *info,
 113                              bool thread_compiler,
 114                              enum radeon_family family,
 115                              enum ac_target_machine_options tm_options,
 116                              unsigned wave_size)
 117 {
 118         if (thread_compiler) {
 119                 for (auto &I : radv_llvm_per_thread_list) {
 120                         if (I.is_same(family, tm_options, wave_size)) {
 121                                 *info = I.llvm_info;
 122                                 return true;
 123                         }
 124                 }
 125
 126                 radv_llvm_per_thread_list.emplace_back(family, tm_options, wave_size);
 127                 radv_llvm_per_thread_info &tinfo = radv_llvm_per_thread_list.back();
 128
 129                 if (!tinfo.init()) {
 130                         radv_llvm_per_thread_list.pop_back();
 131                         return false;
 132                 }
 133
 134                 *info = tinfo.llvm_info;
 135                 return true;
 136         }
 137
 138         if (!ac_init_llvm_compiler(info,
 139                                    family,
 140                                    tm_options))
 141                 return false;
 142         return true;
 143 }
 144
 145 void radv_destroy_llvm_compiler(struct ac_llvm_compiler *info,
 146                                 bool thread_compiler)
 147 {
 148         if (!thread_compiler)
 149                 ac_destroy_llvm_compiler(info);
 150 }