1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
// RUN: %clang_cc1 -std=hlsl2021 -finclude-default-header -x hlsl -triple \
// RUN: dxil-pc-shadermodel6.3-library -disable-llvm-passes %s -emit-llvm -o - | FileCheck %s
/*** for ***/
void for_count()
{
// CHECK-LABEL: for_count
[unroll(8)]
for( int i = 0; i < 1000; ++i);
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_DISTINCT:.*]]
}
void for_disable()
{
// CHECK-LABEL: for_disable
[loop]
for( int i = 0; i < 1000; ++i);
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_DISABLE:.*]]
}
void for_enable()
{
// CHECK-LABEL: for_enable
[unroll]
for( int i = 0; i < 1000; ++i);
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_ENABLE:.*]]
}
void for_nested_one_unroll_enable()
{
// CHECK-LABEL: for_nested_one_unroll_enable
int s = 0;
[unroll]
for( int i = 0; i < 1000; ++i) {
for( int j = 0; j < 10; ++j)
s += i + j;
}
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_NESTED_ENABLE:.*]]
// CHECK-NOT: br label %{{.*}}, !llvm.loop ![[FOR_NESTED_1_ENABLE:.*]]
}
void for_nested_two_unroll_enable()
{
// CHECK-LABEL: for_nested_two_unroll_enable
int s = 0;
[unroll]
for( int i = 0; i < 1000; ++i) {
[unroll]
for( int j = 0; j < 10; ++j)
s += i + j;
}
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_NESTED2_ENABLE:.*]]
// CHECK: br label %{{.*}}, !llvm.loop ![[FOR_NESTED2_1_ENABLE:.*]]
}
/*** while ***/
void while_count()
{
// CHECK-LABEL: while_count
int i = 1000;
[unroll(4)]
while(i-->0);
// CHECK: br label %{{.*}}, !llvm.loop ![[WHILE_DISTINCT:.*]]
}
void while_disable()
{
// CHECK-LABEL: while_disable
int i = 1000;
[loop]
while(i-->0);
// CHECK: br label %{{.*}}, !llvm.loop ![[WHILE_DISABLE:.*]]
}
void while_enable()
{
// CHECK-LABEL: while_enable
int i = 1000;
[unroll]
while(i-->0);
// CHECK: br label %{{.*}}, !llvm.loop ![[WHILE_ENABLE:.*]]
}
/*** do ***/
void do_count()
{
// CHECK-LABEL: do_count
int i = 1000;
[unroll(16)]
do {} while(i--> 0);
// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !llvm.loop ![[DO_DISTINCT:.*]]
}
void do_disable()
{
// CHECK-LABEL: do_disable
int i = 1000;
[loop]
do {} while(i--> 0);
// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !llvm.loop ![[DO_DISABLE:.*]]
}
void do_enable()
{
// CHECK-LABEL: do_enable
int i = 1000;
[unroll]
do {} while(i--> 0);
// CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !llvm.loop ![[DO_ENABLE:.*]]
}
// CHECK: ![[FOR_DISTINCT]] = distinct !{![[FOR_DISTINCT]], ![[FOR_COUNT:.*]]}
// CHECK: ![[FOR_COUNT]] = !{!"llvm.loop.unroll.count", i32 8}
// CHECK: ![[FOR_DISABLE]] = distinct !{![[FOR_DISABLE]], ![[DISABLE:.*]]}
// CHECK: ![[DISABLE]] = !{!"llvm.loop.unroll.disable"}
// CHECK: ![[FOR_ENABLE]] = distinct !{![[FOR_ENABLE]], ![[ENABLE:.*]]}
// CHECK: ![[ENABLE]] = !{!"llvm.loop.unroll.enable"}
// CHECK: ![[FOR_NESTED_ENABLE]] = distinct !{![[FOR_NESTED_ENABLE]], ![[ENABLE]]}
// CHECK: ![[FOR_NESTED2_ENABLE]] = distinct !{![[FOR_NESTED2_ENABLE]], ![[ENABLE]]}
// CHECK: ![[FOR_NESTED2_1_ENABLE]] = distinct !{![[FOR_NESTED2_1_ENABLE]], ![[ENABLE]]}
// CHECK: ![[WHILE_DISTINCT]] = distinct !{![[WHILE_DISTINCT]], ![[WHILE_COUNT:.*]]}
// CHECK: ![[WHILE_COUNT]] = !{!"llvm.loop.unroll.count", i32 4}
// CHECK: ![[WHILE_DISABLE]] = distinct !{![[WHILE_DISABLE]], ![[DISABLE]]}
// CHECK: ![[WHILE_ENABLE]] = distinct !{![[WHILE_ENABLE]], ![[ENABLE]]}
// CHECK: ![[DO_DISTINCT]] = distinct !{![[DO_DISTINCT]], ![[DO_COUNT:.*]]}
// CHECK: ![[DO_COUNT]] = !{!"llvm.loop.unroll.count", i32 16}
// CHECK: ![[DO_DISABLE]] = distinct !{![[DO_DISABLE]], ![[DISABLE]]}
// CHECK: ![[DO_ENABLE]] = distinct !{![[DO_ENABLE]], ![[ENABLE]]}
|
