gcc/testsuite/gcc.target/aarch64/return_address_sign_1.c

/* Testing return address signing where no combined instructions used.  */
/* { dg-do compile } */
/* { dg-options "-O2 -mbranch-protection=pac-ret+leaf" } */
/* { dg-require-effective-target lp64 } */

int foo (int);

/* sibcall only.  */
int __attribute__ ((target ("arch=armv8.3-a")))
func1 (int a, int b)
{
  /* paciasp */
  return foo (a + b);
  /* autiasp */
}

/* non-leaf function with sibcall.  */
int __attribute__ ((target ("arch=armv8.3-a")))
func2 (int a, int b)
{
  /* paciasp */
  if (a < b)
    return b;

  a = foo (b);

  return foo (a);
  /* autiasp */
}

/* non-leaf function, legacy arch.  */
int __attribute__ ((target ("arch=armv8.2-a")))
func3 (int a, int b, int c)
{
  /* paciasp */
  return a + foo (b) + c;
  /* autiasp */
}

/* eh_return.  */
void __attribute__ ((target ("arch=armv8.3-a")))
func4 (long offset, void *handler, int *ptr, int imm1, int imm2)
{
  /* no paciasp */
  *ptr = imm1 + foo (imm1) + imm2;
  __builtin_eh_return (offset, handler);
  /* no autiasp */
  return;
}

/* { dg-final { scan-assembler-times "autiasp" 3 } } */
/* { dg-final { scan-assembler-times "paciasp" 3 } } */