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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s
void test0(int *List, int Length) {
// CHECK-LABEL: @{{.*}}test0{{.*}}(
// CHECK: br label {{.*}}, !llvm.loop ![[LOOP0:.*]]
#pragma clang loop vectorize(enable)
for (int i = 0; i < Length; i++)
List[i] = i * 2;
}
void test1(int *List, int Length) {
// CHECK-LABEL: @{{.*}}test1{{.*}}(
// CHECK: br label {{.*}}, !llvm.loop ![[LOOP1:.*]]
#pragma clang loop vectorize(enable) vectorize_predicate(enable)
for (int i = 0; i < Length; i++)
List[i] = i * 2;
}
void test2(int *List, int Length) {
// CHECK-LABEL: @{{.*}}test2{{.*}}(
// CHECK: br label {{.*}}, !llvm.loop ![[LOOP2:.*]]
#pragma clang loop vectorize(enable) vectorize_predicate(disable)
for (int i = 0; i < Length; i++)
List[i] = i * 2;
}
// vectorize_predicate(enable) implies vectorize(enable)
void test3(int *List, int Length) {
// CHECK-LABEL: @{{.*}}test3{{.*}}(
// CHECK: br label {{.*}}, !llvm.loop ![[LOOP3:.*]]
#pragma clang loop vectorize_predicate(enable)
for (int i = 0; i < Length; i++)
List[i] = i * 2;
}
// Check that disabling vectorization means a vectorization width of 1, and
// also that vectorization_predicate isn't enabled.
void test4(int *List, int Length) {
// CHECK-LABEL: @{{.*}}test4{{.*}}(
// CHECK: br label {{.*}}, !llvm.loop ![[LOOP4:.*]]
#pragma clang loop vectorize(disable)
for (int i = 0; i < Length; i++)
List[i] = i * 2;
}
// Check that vectorize and vectorize_predicate are disabled.
void test5(int *List, int Length) {
// CHECK-LABEL: @{{.*}}test5{{.*}}(
// CHECK: br label {{.*}}, !llvm.loop ![[LOOP5:.*]]
#pragma clang loop vectorize(disable) vectorize_predicate(enable)
for (int i = 0; i < Length; i++)
List[i] = i * 2;
}
// CHECK: ![[LOOP0]] = distinct !{![[LOOP0]], !3}
// CHECK-NEXT: !3 = !{!"llvm.loop.vectorize.enable", i1 true}
// CHECK-NEXT: ![[LOOP1]] = distinct !{![[LOOP1]], !5, !3}
// CHECK-NEXT: !5 = !{!"llvm.loop.vectorize.predicate.enable", i1 true}
// CHECK-NEXT: ![[LOOP2]] = distinct !{![[LOOP2]], !7, !3}
// CHECK-NEXT: !7 = !{!"llvm.loop.vectorize.predicate.enable", i1 false}
// CHECK-NEXT: ![[LOOP3]] = distinct !{![[LOOP3]], !5, !3}
// CHECK-NEXT: ![[LOOP4]] = distinct !{![[LOOP4]], !3, !10}
// CHECK-NEXT: !10 = !{!"llvm.loop.vectorize.width", i32 1}
// CHECK-NEXT: ![[LOOP5]] = distinct !{![[LOOP5]], !3, !10}
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