1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s
2 
3 void test0(int *List, int Length) {
4 // CHECK-LABEL: @{{.*}}test0{{.*}}(
5 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP0:.*]]
6 
7   #pragma clang loop vectorize(enable)
8   for (int i = 0; i < Length; i++)
9     List[i] = i * 2;
10 }
11 
12 void test1(int *List, int Length) {
13 // CHECK-LABEL: @{{.*}}test1{{.*}}(
14 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP1:.*]]
15 
16   #pragma clang loop vectorize(enable) vectorize_predicate(enable)
17   for (int i = 0; i < Length; i++)
18     List[i] = i * 2;
19 }
20 
21 void test2(int *List, int Length) {
22 // CHECK-LABEL: @{{.*}}test2{{.*}}(
23 // CHECK:       br label {{.*}}, !llvm.loop ![[LOOP2:.*]]
24 
25   #pragma clang loop vectorize(enable) vectorize_predicate(disable)
26   for (int i = 0; i < Length; i++)
27     List[i] = i * 2;
28 }
29 
30 // CHECK:      ![[LOOP0]] = distinct !{![[LOOP0]], !3}
31 // CHECK-NEXT: !3 = !{!"llvm.loop.vectorize.enable", i1 true}
32 // CHECK-NEXT: ![[LOOP1]] = distinct !{![[LOOP1]], !5, !3}
33 // CHECK-NEXT: !5 = !{!"llvm.loop.vectorize.predicate.enable", i1 true}
34 // CHECK-NEXT: ![[LOOP2]] = distinct !{![[LOOP2]], !7, !3}
35 // CHECK-NEXT: !7 = !{!"llvm.loop.vectorize.predicate.enable", i1 false}
36