37 lines · c
1// REQUIRES: bpf-registered-target2// RUN: %clang_cc1 -triple bpf -emit-llvm -debug-info-kind=limited -disable-llvm-passes %s -o - | FileCheck %s3 4#define __reloc__ __attribute__((preserve_access_index))5 6// chain of records, all with attributes7struct __reloc__ s1;8struct __reloc__ s2;9struct __reloc__ s3;10 11struct s1 {12 int c;13};14typedef struct s1 __s1;15 16struct s2 {17 union {18 __s1 b[3];19 };20};21typedef struct s2 __s2;22 23struct s3 {24 __s2 a;25};26typedef struct s3 __s3;27 28int test(__s3 *arg) {29 return arg->a.b[2].c;30}31 32// CHECK: call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.s3) %{{[0-9a-z]+}}, i32 0, i32 0)33// CHECK: call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.s2) %{{[0-9a-z]+}}, i32 0, i32 0)34// CHECK: call ptr @llvm.preserve.union.access.index.p0.p0(ptr %{{[0-9a-z]+}}, i32 0)35// CHECK: call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype([3 x %struct.s1]) %{{[0-9a-z]+}}, i32 1, i32 2)36// CHECK: call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.s1) %{{[0-9a-z]+}}, i32 0, i32 0)37