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  1. /*
  2.  * Copyright 2011 Tom Stellard <tstellar@gmail.com>
  3.  *
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining
  7.  * a copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sublicense, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial
  16.  * portions of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21.  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22.  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23.  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24.  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  */
  27.  
  28. #include <stdlib.h>
  29. #include <string.h>
  30. #include <sys/types.h>
  31.  
  32. #include "radeon_compiler_util.h"
  33. #include "radeon_program.h"
  34.  
  35. #include "r300_compiler_tests.h"
  36. #include "rc_test_helpers.h"
  37. #include "unit_test.h"
  38.  
  39. static void test_rc_inst_can_use_presub(
  40.         struct test_result * result,
  41.         int expected,
  42.         const char * add_str,
  43.         const char * replace_str)
  44. {
  45.         struct rc_instruction add_inst, replace_inst;
  46.         int ret;
  47.  
  48.         test_begin(result);
  49.         init_rc_normal_instruction(&add_inst, add_str);
  50.         init_rc_normal_instruction(&replace_inst, replace_str);
  51.  
  52.         ret = rc_inst_can_use_presub(&replace_inst, RC_PRESUB_ADD, 0,
  53.                         &replace_inst.U.I.SrcReg[0],
  54.                         &add_inst.U.I.SrcReg[0], &add_inst.U.I.SrcReg[1]);
  55.  
  56.         test_check(result, ret == expected);
  57. }
  58.  
  59. static void test_runner_rc_inst_can_use_presub(struct test_result * result)
  60. {
  61.  
  62.         /* This tests the case where the source being replace has the same
  63.          * register file and register index as another source register in the
  64.          * CMP instruction.  A previous version of this function was ignoring
  65.          * all registers that shared the same file and index as the replacement
  66.          * register when counting the number of source selects.
  67.          *
  68.          * https://bugs.freedesktop.org/show_bug.cgi?id=36527
  69.          */
  70.         test_rc_inst_can_use_presub(result, 0,
  71.                 "ADD temp[0].z, temp[6].__x_, const[1].__x_;",
  72.                 "CMP temp[0].y, temp[0]._z__, const[0]._z__, temp[0]._y__;");
  73.  
  74.  
  75.         /* Testing a random case that should fail
  76.          *
  77.          * https://bugs.freedesktop.org/show_bug.cgi?id=36527
  78.          */
  79.         test_rc_inst_can_use_presub(result, 0,
  80.                 "ADD temp[3], temp[1], temp[2];",
  81.                 "MAD temp[1], temp[0], const[0].xxxx, -temp[3];");
  82.  
  83.         /* This tests the case where the arguments of the ADD
  84.          * instruction share the same register file and index.  Normally, we
  85.          * would need only one source select for these two arguments, but since
  86.          * they will be part of a presubtract operation we need to use the two
  87.          * source selects that the presubtract instruction expects
  88.          * (src0 and src1).
  89.          *
  90.          * https://bugs.freedesktop.org/show_bug.cgi?id=36527
  91.          */
  92.         test_rc_inst_can_use_presub(result, 0,
  93.                 "ADD temp[3].x, temp[0].x___, temp[0].x___;",
  94.                 "MAD temp[0].xyz, temp[2].xyz_, -temp[3].xxx_, input[5].xyz_;");
  95. }
  96.  
  97. unsigned radeon_compiler_util_run_tests()
  98. {
  99.         static struct test tests[] = {
  100.                 {"rc_inst_can_use_presub()", test_runner_rc_inst_can_use_presub},
  101.                 {NULL, NULL}
  102.         };
  103.         return run_tests(tests);
  104. }
  105.