gcc/testsuite/gcc.target/powerpc/pcrel-sibcall-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-mdejagnu-cpu=power10 -O2" } */
   3 /* { dg-require-effective-target powerpc_elfv2 } */
   4 /* { dg-require-effective-target power10_ok } */
   5
   6 /* Test that potential sibcalls are generated when the caller does not
   7    preserve the TOC, even for external calls; and that sibcalls are not
   8    generated when the caller preserves the TOC but the callee does not.  */
   9
  10 #pragma GCC target ("cpu=power10,pcrel")
  11 int x (void) __attribute__((noipa));
  12 int y (void) __attribute__((noipa));
  13 int xx (void) __attribute__((noipa));
  14
  15 int x (void)
  16 {
  17   return 1;
  18 }
  19
  20 int y (void)
  21 {
  22   return 2;
  23 }
  24
  25 int sib_call (void)
  26 {
  27   return x ();
  28 }
  29
  30 #pragma GCC target ("cpu=power9,no-pcrel")
  31 int normal_call (void)
  32 {
  33   return y ();
  34 }
  35
  36 int xx (void)
  37 {
  38   return 1;
  39 }
  40
  41 extern int yy (void);
  42
  43 #pragma GCC target ("cpu=power10,pcrel")
  44 int notoc_sibcall (void)
  45 {
  46   return xx ();
  47 }
  48
  49 int extern_sibcall (void)
  50 {
  51   return yy ();
  52 }
  53
  54 /* { dg-final { scan-assembler {\mb x@notoc\M} } } */
  55 /* { dg-final { scan-assembler {\mbl y\M} } } */
  56 /* { dg-final { scan-assembler {\mb xx@notoc\M} } } */
  57 /* { dg-final { scan-assembler {\mb yy@notoc\M} } } */