clang/test/CodeGen/bpf-attr-preserve-access-index-1.c

   1 // REQUIRES: bpf-registered-target
   2 // RUN: %clang_cc1 -triple bpf -emit-llvm -debug-info-kind=limited -disable-llvm-passes %s -o - | FileCheck %s
   3
   4 #define __reloc__ __attribute__((preserve_access_index))
   5
   6 // test simple member access and initial struct with non-zero stride access
   7 struct s1 {
   8   int a;
   9   union {
  10    int b;
  11    int c;
  12   };
  13 } __reloc__;
  14 typedef struct s1 __s1;
  15
  16 int test(__s1 *arg) {
  17   return arg->a + arg[1].b;
  18 }
  19
  20 // CHECK: call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.s1) %{{[0-9a-z]+}}, i32 0, i32 0)
  21 // CHECK: call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype(%struct.s1) %{{[0-9a-z]+}}, i32 0, i32 1)
  22 // CHECK: call ptr @llvm.preserve.struct.access.index.p0.p0(ptr elementtype(%struct.s1) %{{[0-9a-z]+}}, i32 1, i32 1)
  23 // CHECK: call ptr @llvm.preserve.union.access.index.p0.p0(ptr %{{[0-9a-z]+}}, i32 0)