Subversion Repositories openrisc

#include "harness.h"

/* This problem occurs if a function is inlined.  When its local

   variables get allocated space on the caller's (the function to

   which it is inlined) stack frame, they don't get 16-byte alignment

   even if they need it.  Here's an example with a union (that's the

   first case I uncovered, but it's probably a general occurrence on

   inlining).  */

#define N 10

/* adjust N = size of buffer to try to get bad alignment for inlined union */

#define DO_INLINE __attribute__ ((always_inline))

#define DONT_INLINE __attribute__ ((noinline))

static DO_INLINE int inline_me(vector signed short data)

{

  union {vector signed short v; signed short s[8];} u;

  u.v = data;

  return u.s[7];

}

static DONT_INLINE int foo(vector signed short data)

{

  int c, buffer[N], i;

  c = inline_me(data);

  for (i=0; i<N; i++) {

    if (i == 0)

      buffer[i] = c;

    else

      buffer[i] = buffer[i-1] + c*i;

  }

  return buffer[N-1];

}

static void test()

{

  check(foo((vector signed short)

            ((vector unsigned char){1,2,3,4,5,6,7,8,

                                   9,10,11,12,13,14,15,16})) == 0x2b4e0,

        "foo");

}