1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O0 -disable-llvm-optzns -fno-unroll-loops | FileCheck --check-prefix=NO_UNROLL_MD %s
2 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O1 -disable-llvm-optzns -fno-unroll-loops | FileCheck --check-prefix=UNROLL_DISABLED_MD %s
3 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O2 -disable-llvm-optzns -fno-unroll-loops | FileCheck --check-prefix=UNROLL_DISABLED_MD %s
4 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O3 -disable-llvm-optzns -fno-unroll-loops | FileCheck --check-prefix=UNROLL_DISABLED_MD %s
5 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s -O3 -disable-llvm-optzns | FileCheck --check-prefix=NO_UNROLL_MD %s
6
7 // NO_UNROLL_MD-NOT: llvm.loop.unroll.disable
8
9 // Verify unroll.disable metadata is added to while loop with -fno-unroll-loops
10 // and optlevel > 0.
while_test(int * List,int Length)11 void while_test(int *List, int Length) {
12 // UNROLL_DISABLED_MD: define {{.*}} @_Z10while_test
13 int i = 0;
14
15 while (i < Length) {
16 // UNROLL_DISABLED_MD: br label {{.*}}, !llvm.loop [[LOOP_1:![0-9]+]]
17 List[i] = i * 2;
18 i++;
19 }
20 }
21
22 // Verify unroll.disable metadata is added to do-while loop with
23 // -fno-unroll-loops and optlevel > 0.
do_test(int * List,int Length)24 void do_test(int *List, int Length) {
25 // UNROLL_DISABLED_MD: define {{.*}} @_Z7do_test
26 int i = 0;
27
28 do {
29 // UNROLL_DISABLED_MD: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop [[LOOP_2:![0-9]+]]
30 List[i] = i * 2;
31 i++;
32 } while (i < Length);
33 }
34
35 // Verify unroll.disable metadata is added to while loop with -fno-unroll-loops
36 // and optlevel > 0.
for_test(int * List,int Length)37 void for_test(int *List, int Length) {
38 // UNROLL_DISABLED_MD: define {{.*}} @_Z8for_test
39 for (int i = 0; i < Length; i++) {
40 // UNROLL_DISABLED_MD: br label {{.*}}, !llvm.loop [[LOOP_3:![0-9]+]]
41 List[i] = i * 2;
42 }
43 }
44
45 // UNROLL_DISABLED_MD: [[LOOP_1]] = distinct !{[[LOOP_1]], [[MP:![0-9]+]], [[UNROLL_DISABLE:![0-9]+]]}
46 // UNROLL_DISABLED_MD: [[MP]] = !{!"llvm.loop.mustprogress"}
47 // UNROLL_DISABLED_MD: [[UNROLL_DISABLE]] = !{!"llvm.loop.unroll.disable"}
48 // UNROLL_DISABLED_MD: [[LOOP_2]] = distinct !{[[LOOP_2]], [[MP]], [[UNROLL_DISABLE]]}
49 // UNROLL_DISABLED_MD: [[LOOP_3]] = distinct !{[[LOOP_3]], [[MP]], [[UNROLL_DISABLE]]}
50