1 // RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s 2 3 // Verify that the outer loop has the llvm.access.group property for the 4 // accesses outside and inside the inner loop, even when the inner loop 5 // is not perfectly nested. 6 void vectorize_imperfectly_nested_test(int *List, int Length) { 7 #pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable) 8 for (int i = 0; i < Length; ++i) { 9 List[i * Length] = 42; 10 #pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable) 11 for (int j = 1; j < Length - 1; ++j) 12 List[i * Length + j] = (i + j) * 2; 13 List[(i + 1) * Length - 1] = 21; 14 } 15 } 16 17 18 // CHECK: load i32, i32* %Length.addr, align 4, !llvm.access.group ![[ACCESS_GROUP_2:[0-9]+]] 19 20 // CHECK: %[[MUL:.+]] = mul nsw i32 %add, 2 21 // CHECK: store i32 %[[MUL]], i32* %{{.+}}, !llvm.access.group ![[ACCESS_GROUP_3:[0-9]+]] 22 // CHECK: br label %{{.+}}, !llvm.loop ![[INNER_LOOPID:[0-9]+]] 23 // CHECK: store i32 21, i32* %{{.+}}, !llvm.access.group ![[ACCESS_GROUP_2]] 24 // CHECK: br label %{{.+}}, !llvm.loop ![[OUTER_LOOPID:[0-9]+]] 25 26 // CHECK: ![[ACCESS_GROUP_2]] = distinct !{} 27 // CHECK: ![[ACCESS_GROUP_LIST_3:[0-9]+]] = !{![[ACCESS_GROUP_2]], ![[ACCESS_GROUP_4:[0-9]+]]} 28 // CHECK: ![[ACCESS_GROUP_4]] = distinct !{} 29 // CHECK: ![[INNER_LOOPID]] = distinct !{![[INNER_LOOPID]], [[MP:![0-9]+]], ![[PARALLEL_ACCESSES_8:[0-9]+]] 30 // CHECK: [[MP]] = !{!"llvm.loop.mustprogress"} 31 // CHECK: ![[PARALLEL_ACCESSES_8]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_4]]} 32 // CHECK: ![[OUTER_LOOPID]] = distinct !{![[OUTER_LOOPID]], [[MP]], ![[PARALLEL_ACCESSES_10:[0-9]+]] 33 // CHECK: ![[PARALLEL_ACCESSES_10]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_2]]} 34