gcc/testsuite/gcc.target/powerpc/pr79439-2.c

   1 /* { dg-do compile { target { powerpc*-*-linux* && lp64 } } } */
   2 /* { dg-options "-O2 -fpic -fno-reorder-blocks -mno-pcrel" } */
   3 /* { dg-require-effective-target fpic } */
   4
   5 /* On the Linux 64-bit ABIs, we should not eliminate NOP in the 'rec' call if
   6    -fpic is used because rec can be interposed at link time (since it has an
   7    alias), and the recursive call should call the interposed function.  The
   8    Linux 32-bit ABIs do not require NOPs after the BL instruction.  */
   9
  10 int f (void);
  11
  12 void
  13 g (void)
  14 {
  15 }
  16
  17 int
  18 rec (int a)
  19 {
  20   int ret = 0;
  21   if (a > 10 && f ())
  22     ret += rec (a - 1);
  23   g ();
  24   return a + ret;
  25 }
  26
  27 int rec_alias (int) __attribute__ ((alias ("rec")));
  28
  29 /* { dg-final { scan-assembler-times {\mbl f\M}   1 } } */
  30 /* { dg-final { scan-assembler-times {\mbl g\M}   1 } } */
  31 /* { dg-final { scan-assembler-times {\mbl rec\M} 1 } } */
  32 /* { dg-final { scan-assembler-times {\mnop\M}    3 } } */