| // RUN: %clang_cc1 -triple aarch64_be-apple-darwin -emit-llvm -o - -O1 %s | \ |
| // RUN: FileCheck -check-prefixes=CHECK %s |
| // RUN: %clang_cc1 -triple aarch64-apple-darwin -emit-llvm -o - -O1 %s | \ |
| // RUN: FileCheck -check-prefixes=CHECK %s |
| // |
| // Check that TBAA metadata for structs containing bitfields is |
| // consistent between big and little endian layouts. |
| |
| struct NamedBitfields { |
| int f1 : 8; |
| int f2 : 8; |
| unsigned f3 : 1; |
| unsigned f4 : 15; |
| int f5; |
| double f6; |
| }; |
| |
| // CHECK-LABEL: _Z4copyP14NamedBitfieldsS0_ |
| // CHECK-SAME: ptr nocapture noundef writeonly [[A1:%.*]], ptr nocapture noundef readonly [[A2:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] { |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) [[A1]], ptr noundef nonnull align 8 dereferenceable(16) [[A2]], i64 16, i1 false), !tbaa.struct [[TBAA_STRUCT2:![0-9]+]] |
| // CHECK-NEXT: ret void |
| // |
| void copy(NamedBitfields *a1, NamedBitfields *a2) { |
| *a1 = *a2; |
| } |
| |
| // CHECK: [[TBAA_STRUCT2]] = !{i64 0, i64 4, [[META3:![0-9]+]], i64 4, i64 4, [[META6:![0-9]+]], i64 8, i64 8, [[META8:![0-9]+]]} |
| // CHECK: [[META3]] = !{[[META4:![0-9]+]], [[META4]], i64 0} |
| // CHECK: [[META4]] = !{!"omnipotent char", [[META5:![0-9]+]], i64 0} |
| // CHECK: [[META5]] = !{!"Simple C++ TBAA"} |
| // CHECK: [[META6]] = !{[[META7:![0-9]+]], [[META7]], i64 0} |
| // CHECK: [[META7]] = !{!"int", [[META4]], i64 0} |
| // CHECK: [[META8]] = !{[[META9:![0-9]+]], [[META9]], i64 0} |
| // CHECK: [[META9]] = !{!"double", [[META4]], i64 0} |
