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 List[i * Length + j] = Value;
10 }
11 }
12 }
13
unroll_and_jam_count(int * List,int Length,int Value)14 void unroll_and_jam_count(int *List, int Length, int Value) {
15 // CHECK-LABEL: define {{.*}} @_Z20unroll_and_jam_count
16 #pragma unroll_and_jam(4)
17 for (int i = 0; i < Length; i++) {
18 for (int j = 0; j < Length; j++) {
19 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_2:.*]]
20 List[i * Length + j] = Value;
21 }
22 }
23 }
24
nounroll_and_jam(int * List,int Length,int Value)25 void nounroll_and_jam(int *List, int Length, int Value) {
26 // CHECK-LABEL: define {{.*}} @_Z16nounroll_and_jam
27 #pragma nounroll_and_jam
28 for (int i = 0; i < Length; i++) {
29 for (int j = 0; j < Length; j++) {
30 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_3:.*]]
31 List[i * Length + j] = Value;
32 }
33 }
34 }
35
clang_unroll_plus_nounroll_and_jam(int * List,int Length,int Value)36 void clang_unroll_plus_nounroll_and_jam(int *List, int Length, int Value) {
37 // CHECK-LABEL: define {{.*}} @_Z34clang_unroll_plus_nounroll_and_jam
38 #pragma nounroll_and_jam
39 #pragma unroll(4)
40 for (int i = 0; i < Length; i++) {
41 for (int j = 0; j < Length; j++) {
42 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP_7:.*]]
43 List[i * Length + j] = Value;
44 }
45 }
46 }
47
48 // CHECK: ![[LOOP_1]] = distinct !{![[LOOP_1]], ![[UNJ_ENABLE:.*]]}
49 // CHECK: ![[UNJ_ENABLE]] = !{!"llvm.loop.unroll_and_jam.enable"}
50 // CHECK: ![[LOOP_2]] = distinct !{![[LOOP_2]], ![[UNJ_4:.*]]}
51 // CHECK: ![[UNJ_4]] = !{!"llvm.loop.unroll_and_jam.count", i32 4}
52 // CHECK: ![[LOOP_3]] = distinct !{![[LOOP_3]], ![[UNJ_DISABLE:.*]]}
53 // CHECK: ![[UNJ_DISABLE]] = !{!"llvm.loop.unroll_and_jam.disable"}
54 // CHECK: ![[LOOP_7]] = distinct !{![[LOOP_7]], ![[UNJ_DISABLE:.*]], ![[UNROLL_4:.*]]}
55 // CHECK: ![[UNROLL_4]] = !{!"llvm.loop.unroll.count", i32 4}
56