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                 : family(arg_family), tm_options(arg_tm_options), passes(NULL) {}
  33
  34         ~radv_llvm_per_thread_info()
  35         {
  36                 ac_destroy_llvm_compiler(&llvm_info);
  37         }
  38
  39         bool init(void)
  40         {
  41                 if (!ac_init_llvm_compiler(&llvm_info,
  42                                           family,
  43                                           tm_options))
  44                         return false;
  45
  46                 passes = ac_create_llvm_passes(llvm_info.tm);
  47                 if (!passes)
  48                         return false;
  49
  50                 return true;
  51         }
  52
  53         bool compile_to_memory_buffer(LLVMModuleRef module,
  54                                       char **pelf_buffer, size_t *pelf_size)
  55         {
  56                 return ac_compile_module_to_elf(passes, module, pelf_buffer, pelf_size);
  57         }
  58
  59         bool is_same(enum radeon_family arg_family,
  60                      enum ac_target_machine_options arg_tm_options) {
  61                 if (arg_family == family &&
  62                     arg_tm_options == tm_options)
  63                         return true;
  64                 return false;
  65         }
  66         struct ac_llvm_compiler llvm_info;
  67 private:
  68         enum radeon_family family;
  69         enum ac_target_machine_options tm_options;
  70         struct ac_compiler_passes *passes;
  71 };
  72
  73 /* we have to store a linked list per thread due to the possiblity of multiple gpus being required */
  74 static thread_local std::list<radv_llvm_per_thread_info> radv_llvm_per_thread_list;
  75
  76 bool radv_compile_to_elf(struct ac_llvm_compiler *info,
  77                         LLVMModuleRef module,
  78                         char **pelf_buffer, size_t *pelf_size)
  79 {
  80         radv_llvm_per_thread_info *thread_info = nullptr;
  81
  82         for (auto &I : radv_llvm_per_thread_list) {
  83                 if (I.llvm_info.tm == info->tm) {
  84                         thread_info = &I;
  85                         break;
  86                 }
  87         }
  88
  89         if (!thread_info) {
  90                 struct ac_compiler_passes *passes = ac_create_llvm_passes(info->tm);
  91                 bool ret = ac_compile_module_to_elf(passes, module, pelf_buffer, pelf_size);
  92                 ac_destroy_llvm_passes(passes);
  93                 return ret;
  94         }
  95
  96         return thread_info->compile_to_memory_buffer(module, pelf_buffer, pelf_size);
  97 }
  98
  99 bool radv_init_llvm_compiler(struct ac_llvm_compiler *info,
 100                              bool thread_compiler,
 101                              enum radeon_family family,
 102                              enum ac_target_machine_options tm_options)
 103 {
 104         if (thread_compiler) {
 105                 for (auto &I : radv_llvm_per_thread_list) {
 106                         if (I.is_same(family, tm_options)) {
 107                                 *info = I.llvm_info;
 108                                 return true;
 109                         }
 110                 }
 111
 112                 radv_llvm_per_thread_list.emplace_back(family, tm_options);
 113                 radv_llvm_per_thread_info &tinfo = radv_llvm_per_thread_list.back();
 114
 115                 if (!tinfo.init()) {
 116                         radv_llvm_per_thread_list.pop_back();
 117                         return false;
 118                 }
 119
 120                 *info = tinfo.llvm_info;
 121                 return true;
 122         }
 123
 124         if (!ac_init_llvm_compiler(info,
 125                                    family,
 126                                    tm_options))
 127                 return false;
 128         return true;
 129 }
 130
 131 void radv_destroy_llvm_compiler(struct ac_llvm_compiler *info,
 132                                 bool thread_compiler)
 133 {
 134         if (!thread_compiler)
 135                 ac_destroy_llvm_compiler(info);
 136 }