src/amd/common/ac_llvm_util.h

   1 /*
   2  * Copyright 2016 Bas Nieuwenhuizen
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sub license, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  13  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  15  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  16  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  17  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  18  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  19  *
  20  * The above copyright notice and this permission notice (including the
  21  * next paragraph) shall be included in all copies or substantial portions
  22  * of the Software.
  23  *
  24  */
  25
  26 #ifndef AC_LLVM_UTIL_H
  27 #define AC_LLVM_UTIL_H
  28
  29 #include <stdbool.h>
  30 #include <llvm-c/TargetMachine.h>
  31
  32 #include "amd_family.h"
  33
  34 #ifdef __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 enum ac_func_attr {
  39         AC_FUNC_ATTR_ALWAYSINLINE = (1 << 0),
  40         AC_FUNC_ATTR_BYVAL        = (1 << 1),
  41         AC_FUNC_ATTR_INREG        = (1 << 2),
  42         AC_FUNC_ATTR_NOALIAS      = (1 << 3),
  43         AC_FUNC_ATTR_NOUNWIND     = (1 << 4),
  44         AC_FUNC_ATTR_READNONE     = (1 << 5),
  45         AC_FUNC_ATTR_READONLY     = (1 << 6),
  46         AC_FUNC_ATTR_WRITEONLY    = HAVE_LLVM >= 0x0400 ? (1 << 7) : 0,
  47         AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY = HAVE_LLVM >= 0x0400 ? (1 << 8) : 0,
  48         AC_FUNC_ATTR_CONVERGENT = HAVE_LLVM >= 0x0400 ? (1 << 9) : 0,
  49
  50         /* Legacy intrinsic that needs attributes on function declarations
  51          * and they must match the internal LLVM definition exactly, otherwise
  52          * intrinsic selection fails.
  53          */
  54         AC_FUNC_ATTR_LEGACY       = (1u << 31),
  55 };
  56
  57 enum ac_target_machine_options {
  58         AC_TM_SUPPORTS_SPILL = (1 << 0),
  59         AC_TM_SISCHED = (1 << 1),
  60         AC_TM_FORCE_ENABLE_XNACK = (1 << 2),
  61         AC_TM_FORCE_DISABLE_XNACK = (1 << 3),
  62         AC_TM_PROMOTE_ALLOCA_TO_SCRATCH = (1 << 4),
  63 };
  64
  65 const char *ac_get_llvm_processor_name(enum radeon_family family);
  66 LLVMTargetMachineRef ac_create_target_machine(enum radeon_family family, enum ac_target_machine_options tm_options);
  67
  68 LLVMTargetRef ac_get_llvm_target(const char *triple);
  69 void ac_add_attr_dereferenceable(LLVMValueRef val, uint64_t bytes);
  70 bool ac_is_sgpr_param(LLVMValueRef param);
  71 void ac_add_function_attr(LLVMContextRef ctx, LLVMValueRef function,
  72                           int attr_idx, enum ac_func_attr attr);
  73 void ac_add_func_attributes(LLVMContextRef ctx, LLVMValueRef function,
  74                             unsigned attrib_mask);
  75 void ac_dump_module(LLVMModuleRef module);
  76
  77 LLVMValueRef ac_llvm_get_called_value(LLVMValueRef call);
  78 bool ac_llvm_is_function(LLVMValueRef v);
  79
  80 void
  81 ac_llvm_add_target_dep_function_attr(LLVMValueRef F,
  82                                      const char *name, int value);
  83
  84 static inline unsigned
  85 ac_get_load_intr_attribs(bool can_speculate)
  86 {
  87         /* READNONE means writes can't affect it, while READONLY means that
  88          * writes can affect it. */
  89         return can_speculate && HAVE_LLVM >= 0x0400 ?
  90                                  AC_FUNC_ATTR_READNONE :
  91                                  AC_FUNC_ATTR_READONLY;
  92 }
  93
  94 static inline unsigned
  95 ac_get_store_intr_attribs(bool writeonly_memory)
  96 {
  97         return writeonly_memory && HAVE_LLVM >= 0x0400 ?
  98                                   AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY :
  99                                   AC_FUNC_ATTR_WRITEONLY;
 100 }
 101
 102 #ifdef __cplusplus
 103 }
 104 #endif
 105
 106 #endif /* AC_LLVM_UTIL_H */