gcc/testsuite/gcc.target/powerpc/lhs-1.c

   1 /* { dg-do compile { target { powerpc*-*-* } } } */
   2 /* { dg-skip-if "" { powerpc*-*-darwin* } } */
   3 /* { dg-options "-O2 -mdejagnu-cpu=power5" } */
   4 /* { dg-final { scan-assembler-times "nop" 3 } } */
   5
   6 /* Test generation of nops in load hit store situation.  Make sure enough nop
   7    insns are generated to move the load to a new dispatch group.  With the
   8    simple stw/lwz pair below, that would be 3 nop insns for Power5.  */
   9
  10 unsigned int f (volatile unsigned int *u, unsigned int u2)
  11 {
  12   *u = u2;
  13   return *u;
  14 }