1#include <stdlib.h>
2#include <string.h>
3#include <sys/types.h>
4
5#include "radeon_compiler_util.h"
6#include "radeon_program.h"
7
8#include "r300_compiler_tests.h"
9#include "rc_test_helpers.h"
10#include "unit_test.h"
11
12static void test_rc_inst_can_use_presub(
13	struct test_result * result,
14	int expected,
15	const char * add_str,
16	const char * replace_str)
17{
18	struct rc_instruction add_inst, replace_inst;
19	int ret;
20
21	test_begin(result);
22	init_rc_normal_instruction(&add_inst, add_str);
23	init_rc_normal_instruction(&replace_inst, replace_str);
24
25	ret = rc_inst_can_use_presub(&replace_inst, RC_PRESUB_ADD, 0,
26			&replace_inst.U.I.SrcReg[0],
27			&add_inst.U.I.SrcReg[0], &add_inst.U.I.SrcReg[1]);
28
29	test_check(result, ret == expected);
30}
31
32static void test_runner_rc_inst_can_use_presub(struct test_result * result)
33{
34
35	/* This tests the case where the source being replace has the same
36	 * register file and register index as another source register in the
37	 * CMP instruction.  A previous version of this function was ignoring
38	 * all registers that shared the same file and index as the replacement
39	 * register when counting the number of source selects.
40	 *
41	 * https://bugs.freedesktop.org/show_bug.cgi?id=36527
42	 */
43	test_rc_inst_can_use_presub(result, 0,
44		"ADD temp[0].z, temp[6].__x_, const[1].__x_;",
45		"CMP temp[0].y, temp[0]._z__, const[0]._z__, temp[0]._y__;");
46
47
48	/* Testing a random case that should fail
49	 *
50	 * https://bugs.freedesktop.org/show_bug.cgi?id=36527
51	 */
52	test_rc_inst_can_use_presub(result, 0,
53		"ADD temp[3], temp[1], temp[2];",
54		"MAD temp[1], temp[0], const[0].xxxx, -temp[3];");
55
56	/* This tests the case where the arguments of the ADD
57	 * instruction share the same register file and index.  Normally, we
58	 * would need only one source select for these two arguments, but since
59	 * they will be part of a presubtract operation we need to use the two
60	 * source selects that the presubtract instruction expects
61	 * (src0 and src1).
62	 *
63	 * https://bugs.freedesktop.org/show_bug.cgi?id=36527
64	 */
65	test_rc_inst_can_use_presub(result, 0,
66		"ADD temp[3].x, temp[0].x___, temp[0].x___;",
67		"MAD temp[0].xyz, temp[2].xyz_, -temp[3].xxx_, input[5].xyz_;");
68}
69
70void radeon_compiler_util_run_tests()
71{
72	struct test tests[] = {
73		{"rc_inst_can_use_presub()", test_runner_rc_inst_can_use_presub},
74		{NULL, NULL}
75	};
76	run_tests(tests);
77}
78