File: bpf-preserve-access-index.c

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (22 lines) | stat: -rw-r--r-- 624 bytes parent folder | download | duplicates (18) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
// RUN: %clang %s -target bpfeb -x c -emit-llvm -S -g -O2 -Xclang -disable-llvm-passes -o - | FileCheck --check-prefix=CHECK %s
// RUN: %clang %s -target bpfel -x c -emit-llvm -S -g -O2 -Xclang -disable-llvm-passes -o - | FileCheck --check-prefix=CHECK %s

struct t {
  int i:1;
  int j:2;
  union {
   int a;
   int b;
  } c[4];
};

#define _(x) (__builtin_preserve_access_index(x))

const void *test(struct t *arg) {
  return _(&arg->c[3].b);
}

// CHECK: llvm.preserve.struct.access.index
// CHECK: llvm.preserve.array.access.index
// CHECK: llvm.preserve.union.access.index
// CHECK-NOT: __builtin_preserve_access_index