34 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s2 3// Verify that the outer loop has the llvm.access.group property for the4// accesses outside and inside the inner loop, even when the inner loop5// is not perfectly nested.6void 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, ptr %Length.addr, align 4, !llvm.access.group ![[ACCESS_GROUP_2:[0-9]+]]19 20// CHECK: %[[MUL:.+]] = mul nsw i32 %add, 221// CHECK: store i32 %[[MUL]], ptr %{{.+}}, !llvm.access.group ![[ACCESS_GROUP_3:[0-9]+]]22// CHECK: br label %{{.+}}, !llvm.loop ![[INNER_LOOPID:[0-9]+]]23// CHECK: store i32 21, ptr %{{.+}}, !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