| // REQUIRES: bpf-registered-target |
| // RUN: %clang -target bpf -emit-llvm -S -g %s -o - | FileCheck %s |
| |
| #define _(x, y) (__builtin_preserve_field_info((x), (y))) |
| |
| struct s1 { |
| char a; |
| char b:2; |
| }; |
| |
| union u1 { |
| char a; |
| char b:2; |
| }; |
| |
| unsigned unit1(struct s1 *arg) { |
| return _(arg->a, 10) + _(arg->b, 10); |
| } |
| // CHECK: define dso_local i32 @unit1 |
| // CHECK: call i8* @llvm.preserve.struct.access.index.p0i8.p0s_struct.s1s(%struct.s1* %{{[0-9a-z]+}}, i32 0, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_S1:[0-9]+]] |
| // CHECK: call i32 @llvm.bpf.preserve.field.info.p0i8(i8* %{{[0-9a-z]+}}, i64 10), !dbg !{{[0-9]+}} |
| // CHECK: call i8* @llvm.preserve.struct.access.index.p0i8.p0s_struct.s1s(%struct.s1* %{{[0-9a-z]+}}, i32 1, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[STRUCT_S1:[0-9]+]] |
| // CHECK: call i32 @llvm.bpf.preserve.field.info.p0i8(i8* %{{[0-9a-z]+}}, i64 10), !dbg !{{[0-9]+}} |
| |
| unsigned unit2(union u1 *arg) { |
| return _(arg->a, 10) + _(arg->b, 10); |
| } |
| // CHECK: define dso_local i32 @unit2 |
| // CHECK: call %union.u1* @llvm.preserve.union.access.index.p0s_union.u1s.p0s_union.u1s(%union.u1* %{{[0-9a-z]+}}, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_U1:[0-9]+]] |
| // CHECK: call i32 @llvm.bpf.preserve.field.info.p0i8(i8* %{{[0-9a-z]+}}, i64 10), !dbg !{{[0-9]+}} |
| // CHECK: call i8* @llvm.preserve.struct.access.index.p0i8.p0s_union.u1s(%union.u1* %{{[0-9a-z]+}}, i32 0, i32 1), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[UNION_U1:[0-9]+]] |
| // CHECK: call i32 @llvm.bpf.preserve.field.info.p0i8(i8* %{{[0-9a-z]+}}, i64 10), !dbg !{{[0-9]+}} |
| |
| // CHECK: ![[STRUCT_S1]] = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1" |
| // CHECK: ![[UNION_U1]] = distinct !DICompositeType(tag: DW_TAG_union_type, name: "u1" |
