1 // RUN: %clang_cc1 -triple aarch64_be-apple-darwin -emit-llvm -o - -O1 %s | \ 2 // RUN: FileCheck -check-prefixes=CHECK %s 3 // RUN: %clang_cc1 -triple aarch64-apple-darwin -emit-llvm -o - -O1 %s | \ 4 // RUN: FileCheck -check-prefixes=CHECK %s 5 // 6 // Check that TBAA metadata for structs containing bitfields is 7 // consistent between big and little endian layouts. 8 9 struct NamedBitfields { 10 int f1 : 8; 11 int f2 : 8; 12 unsigned f3 : 1; 13 unsigned f4 : 15; 14 int f5; 15 double f6; 16 }; 17 18 // CHECK-LABEL: _Z4copyP14NamedBitfieldsS0_ 19 // CHECK-SAME: ptr noundef writeonly captures(none) initializes((0, 16)) [[A1:%.*]], ptr noundef readonly captures(none) [[A2:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] { 20 // CHECK-NEXT: entry: 21 // 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]+]] 22 // CHECK-NEXT: ret void 23 // 24 void copy(NamedBitfields *a1, NamedBitfields *a2) { 25 *a1 = *a2; 26 } 27 28 // CHECK: [[TBAA_STRUCT2]] = !{i64 0, i64 4, [[META3:![0-9]+]], i64 4, i64 4, [[META6:![0-9]+]], i64 8, i64 8, [[META8:![0-9]+]]} 29 // CHECK: [[META3]] = !{[[META4:![0-9]+]], [[META4]], i64 0} 30 // CHECK: [[META4]] = !{!"omnipotent char", [[META5:![0-9]+]], i64 0} 31 // CHECK: [[META5]] = !{!"Simple C++ TBAA"} 32 // CHECK: [[META6]] = !{[[META7:![0-9]+]], [[META7]], i64 0} 33 // CHECK: [[META7]] = !{!"int", [[META4]], i64 0} 34 // CHECK: [[META8]] = !{[[META9:![0-9]+]], [[META9]], i64 0} 35 // CHECK: [[META9]] = !{!"double", [[META4]], i64 0} 36