1 // RUN: %clang_cc1 -triple arm-none-eabi -std=c++11 -emit-llvm -o - %s | FileCheck %s
2
unroll_and_jam(int * List,int Length,int Value)3 void unroll_and_jam(int *List, int Length, int Value) {
4 // CHECK-LABEL: define {{.*}} @_Z14unroll_and_jam
5 #pragma unroll_and_jam
6 for (int i = 0; i < Length; i++) {
7 for (int j = 0; j < Length; j++) {
8 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_1:.*]]
9 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_2:.*]]
10 List[i * Length + j] = Value;
11 }
12 }
13 }
14
unroll_and_jam_count(int * List,int Length,int Value)15 void unroll_and_jam_count(int *List, int Length, int Value) {
16 // CHECK-LABEL: define {{.*}} @_Z20unroll_and_jam_count
17 #pragma unroll_and_jam(4)
18 for (int i = 0; i < Length; i++) {
19 for (int j = 0; j < Length; j++) {
20 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_3:.*]]
21 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_4:.*]]
22 List[i * Length + j] = Value;
23 }
24 }
25 }
26
nounroll_and_jam(int * List,int Length,int Value)27 void nounroll_and_jam(int *List, int Length, int Value) {
28 // CHECK-LABEL: define {{.*}} @_Z16nounroll_and_jam
29 #pragma nounroll_and_jam
30 for (int i = 0; i < Length; i++) {
31 for (int j = 0; j < Length; j++) {
32 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_5:.*]]
33 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_6:.*]]
34 List[i * Length + j] = Value;
35 }
36 }
37 }
38
clang_unroll_plus_nounroll_and_jam(int * List,int Length,int Value)39 void clang_unroll_plus_nounroll_and_jam(int *List, int Length, int Value) {
40 // CHECK-LABEL: define {{.*}} @_Z34clang_unroll_plus_nounroll_and_jam
41 #pragma nounroll_and_jam
42 #pragma unroll(4)
43 for (int i = 0; i < Length; i++) {
44 for (int j = 0; j < Length; j++) {
45 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_7:.*]]
46 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_8:.*]]
47 List[i * Length + j] = Value;
48 }
49 }
50 }
51
52 // CHECK: ![[LOOP_2]] = distinct !{![[LOOP_2]], [[MP:![0-9]+]], ![[UNJ_ENABLE:.*]]}
53 // CHECK: ![[UNJ_ENABLE]] = !{!"llvm.loop.unroll_and_jam.enable"}
54 // CHECK: ![[LOOP_4]] = distinct !{![[LOOP_4]], [[MP]], ![[UNJ_4:.*]]}
55 // CHECK: ![[UNJ_4]] = !{!"llvm.loop.unroll_and_jam.count", i32 4}
56 // CHECK: ![[LOOP_6]] = distinct !{![[LOOP_6]], [[MP]], ![[UNJ_DISABLE:.*]]}
57 // CHECK: ![[UNJ_DISABLE]] = !{!"llvm.loop.unroll_and_jam.disable"}
58 // CHECK: ![[LOOP_8]] = distinct !{![[LOOP_8]], [[MP]], ![[UNJ_DISABLE:.*]], ![[UNROLL_4:.*]]}
59 // CHECK: ![[UNROLL_4]] = !{!"llvm.loop.unroll.count", i32 4}
60