28 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.5void vectorize_nested_test(int *List, int Length) {6#pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable)7 for (int i = 0; i < Length; ++i) {8#pragma clang loop vectorize(assume_safety) interleave(disable) unroll(disable)9 for (int j = 0; j < Length; ++j)10 List[i * Length + j] = (i + j) * 2;11 }12}13 14 15// CHECK: load i32, ptr %Length.addr, align 4, !llvm.access.group ![[ACCESS_GROUP_2:[0-9]+]]16// CHECK: %[[MUL:.+]] = mul17// CHECK: store i32 %[[MUL]], ptr %{{.+}}, !llvm.access.group ![[ACCESS_GROUP_LIST_3:[0-9]+]]18// CHECK: br label %{{.+}}, !llvm.loop ![[INNER_LOOPID:[0-9]+]]19// CHECK: br label %{{.+}}, !llvm.loop ![[OUTER_LOOPID:[0-9]+]]20 21// CHECK: ![[ACCESS_GROUP_2]] = distinct !{}22// CHECK: ![[ACCESS_GROUP_LIST_3]] = !{![[ACCESS_GROUP_2]], ![[ACCESS_GROUP_4:[0-9]+]]}23// CHECK: ![[ACCESS_GROUP_4]] = distinct !{}24// CHECK: ![[INNER_LOOPID]] = distinct !{![[INNER_LOOPID]], [[MP:![0-9]+]], ![[PARALLEL_ACCESSES_8:[0-9]+]]25// CHECK: ![[PARALLEL_ACCESSES_8]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_4]]}26// CHECK: ![[OUTER_LOOPID]] = distinct !{![[OUTER_LOOPID]], [[MP]], ![[PARALLEL_ACCESSES_10:[0-9]+]]27// CHECK: ![[PARALLEL_ACCESSES_10]] = !{!"llvm.loop.parallel_accesses", ![[ACCESS_GROUP_2]]}28