1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s 2 3 void loop1(int *List, int Length) { 4 // CHECK-LABEL: @{{.*}}loop1{{.*}}( 5 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP1:.*]] 6 7 #pragma clang loop vectorize(enable) vectorize_width(1) 8 for (int i = 0; i < Length; i++) 9 List[i] = i * 2; 10 } 11 12 // Here, vectorize.enable should be set, obviously, but also check that 13 // metadata isn't added twice. 14 void loop2(int *List, int Length) { 15 // CHECK-LABEL: @{{.*}}loop2{{.*}}( 16 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP2:.*]] 17 18 #pragma clang loop vectorize(enable) vectorize_width(2) 19 for (int i = 0; i < Length; i++) 20 List[i] = i * 2; 21 } 22 23 // Test that we do *not* imply vectorize.enable. 24 void loop3(int *List, int Length) { 25 // CHECK-LABEL: @{{.*}}loop3{{.*}}( 26 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP3:.*]] 27 28 #pragma clang loop vectorize_width(1) 29 for (int i = 0; i < Length; i++) 30 List[i] = i * 2; 31 } 32 33 // Test that we *do* imply vectorize.enable. 34 void loop4(int *List, int Length) { 35 // CHECK-LABEL: @{{.*}}loop4{{.*}}( 36 // CHECK: br label {{.*}}, !llvm.loop ![[LOOP4:.*]] 37 38 #pragma clang loop vectorize_width(2) 39 for (int i = 0; i < Length; i++) 40 List[i] = i * 2; 41 } 42 43 // CHECK: ![[LOOP1]] = distinct !{![[LOOP1]], [[MP:![0-9]+]], ![[VEC_WIDTH_1:.*]], ![[FIXED_WIDTH:.*]], ![[VEC_ENABLE:.*]]} 44 // CHECK: ![[VEC_WIDTH_1]] = !{!"llvm.loop.vectorize.width", i32 1} 45 // CHECK: ![[FIXED_WIDTH]] = !{!"llvm.loop.vectorize.scalable.enable", i1 false} 46 // CHECK: ![[VEC_ENABLE]] = !{!"llvm.loop.vectorize.enable", i1 true} 47 48 // CHECK: ![[LOOP2]] = distinct !{![[LOOP2]], [[MP]], ![[VEC_WIDTH_2:.*]], ![[FIXED_WIDTH:.*]], ![[VEC_ENABLE]]} 49 // CHECK: ![[VEC_WIDTH_2]] = !{!"llvm.loop.vectorize.width", i32 2} 50 51 // CHECK: ![[LOOP3]] = distinct !{![[LOOP3]], [[MP]], ![[VEC_WIDTH_1]], ![[FIXED_WIDTH]]} 52 53 // CHECK: ![[LOOP4]] = distinct !{![[LOOP4]], [[MP]], ![[VEC_WIDTH_2]], ![[FIXED_WIDTH]], ![[VEC_ENABLE]]} 54