gcc/testsuite/gcc.target/sh/pr54760-5.c

   1 /* Check that the GBR address optimization works when there are multiple
   2    GBR register definitions and function calls, if the GBR is marked as a
   3    call saved register.  */
   4 /* { dg-do compile }  */
   5 /* { dg-options "-O1 -fcall-saved-gbr" } */
   6 /* { dg-final { scan-assembler-not "stc\tgbr" } } */
   7
   8 typedef struct
   9 {
  10   int x, y, z, w;
  11 } tcb_t;
  12
  13 extern void test_00 (void);
  14
  15 int
  16 test_01 (int x, volatile int* y, int a)
  17 {
  18   if (a)
  19     test_00 ();
  20
  21   y[0] = 1;
  22
  23   tcb_t* tcb = (tcb_t*)__builtin_thread_pointer ();
  24   return (a & 5) ? tcb->x : tcb->w;
  25 }