Subversion Repositories openrisc_2011-10-31

/* { dg-do compile } */

/* { dg-options "-O2 -fdump-tree-pre-stats" } */

union loc {  unsigned reg; signed offset; };

void __frame_state_for (volatile char *state_in, int x)

{

  /* We should move all the loads out of this loop. Right now, we only

     move one.  It takes two insertions because we insert a cast.  */

    union loc fs;

    int reg;

    for (;;)     {

        switch (x)  {

            case 0:

                *state_in = fs.reg;

            case 1:

                *state_in = fs.offset;

        }

    }

}

/* This is a weird testcase.  It should need PPRE to hoist the loop

   invariants and the volatileness of state_in prevents DSE of the

   first store.  Thus, this is XFAILed.  */

/* { dg-final { scan-tree-dump "Insertions: 2" "pre" { xfail *-*-* } } } */

/* { dg-final { cleanup-tree-dump "pre" } } */