gcc/testsuite/gcc.target/arm/pr77933-2.c

   1 /* { dg-do run } */
   2 /* { dg-skip-if "" { ! { arm_thumb1_ok || arm_thumb2_ok } } } */
   3 /* { dg-skip-if "r9 is reserved in FDPIC" { arm*-*-uclinuxfdpiceabi } "*" "" } */
   4 /* { dg-options "-mthumb -O2 -mtpcs-leaf-frame" } */
   5
   6 __attribute__ ((noinline, noclone)) void
   7 clobber_lr_and_highregs (void)
   8 {
   9   __asm__ volatile ("" : : : "r8", "r9", "lr");
  10 }
  11
  12 int
  13 main (void)
  14 {
  15   int ret;
  16
  17   __asm volatile ("mov\tr4, #0xf4\n\t"
  18                   "mov\tr5, #0xf5\n\t"
  19                   "mov\tr6, #0xf6\n\t"
  20                   "mov\tr7, #0xf7\n\t"
  21                   "mov\tr0, #0xf8\n\t"
  22                   "mov\tr8, r0\n\t"
  23                   "mov\tr0, #0xfa\n\t"
  24                   "mov\tr10, r0"
  25                   : : : "r0", "r4", "r5", "r6", "r7", "r8", "r10");
  26
  27   clobber_lr_and_highregs ();
  28
  29   __asm volatile ("cmp\tr4, #0xf4\n\t"
  30                   "bne\tfail\n\t"
  31                   "cmp\tr5, #0xf5\n\t"
  32                   "bne\tfail\n\t"
  33                   "cmp\tr6, #0xf6\n\t"
  34                   "bne\tfail\n\t"
  35                   "cmp\tr7, #0xf7\n\t"
  36                   "bne\tfail\n\t"
  37                   "mov\tr0, r8\n\t"
  38                   "cmp\tr0, #0xf8\n\t"
  39                   "bne\tfail\n\t"
  40                   "mov\tr0, r10\n\t"
  41                   "cmp\tr0, #0xfa\n\t"
  42                   "bne\tfail\n\t"
  43                   "mov\t%0, #1\n"
  44                   "fail:\n\t"
  45                   "sub\tr0, #1"
  46                   : "=r" (ret) : :);
  47   return ret;
  48 }