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

   1 // RUN: %clang %s -target bpfeb -x c -emit-llvm -S -g -O2 -Xclang -disable-llvm-passes -o - | FileCheck --check-prefix=CHECK %s
   2 // RUN: %clang %s -target bpfel -x c -emit-llvm -S -g -O2 -Xclang -disable-llvm-passes -o - | FileCheck --check-prefix=CHECK %s
   3
   4 struct t {
   5   int i:1;
   6   int j:2;
   7   union {
   8    int a;
   9    int b;
  10   } c[4];
  11 };
  12
  13 #define _(x) (__builtin_preserve_access_index(x))
  14
  15 const void *test(struct t *arg) {
  16   return _(&arg->c[3].b);
  17 }
  18
  19 // CHECK: llvm.preserve.struct.access.index
  20 // CHECK: llvm.preserve.array.access.index
  21 // CHECK: llvm.preserve.union.access.index
  22 // CHECK-NOT: __builtin_preserve_access_index