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

   1 /* { dg-do compile { target { powerpc*-*-* } } } */
   2 /* { dg-skip-if "" { powerpc*-*-darwin* } } */
   3 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power5" } } */
   4 /* { dg-options "-O2 -mcpu=power5" } */
   5 /* { dg-final { scan-assembler-times "nop" 3 } } */
   6
   7 /* Test generation of nops in load hit store situation.  Make sure enough nop
   8    insns are generated to move the load to a new dispatch group.  With the
   9    simple stw/lwz pair below, that would be 3 nop insns for Power5.  */
  10
  11 unsigned int f (volatile unsigned int *u, unsigned int u2)
  12 {
  13   *u = u2;
  14   return *u;
  15 }