gcc/testsuite/gcc.dg/torture/calleesave-sse.c

   1 /* { dg-do run } */
   2 /* { dg-options "-fno-omit-frame-pointer" } */
   3 /* { dg-require-effective-target alloca } */
   4
   5 #define alloca __builtin_alloca
   6 extern void abort (void);
   7
   8 __attribute__ ((noinline)) static double
   9 bar (double a, double b, double c, double d, char *h)
  10 {
  11   *h = 0;
  12   return a * b + b + c;
  13 }
  14
  15 __attribute__ ((noinline)) static int
  16 boo (double a, double b, double c, double d)
  17 {
  18   return c * b + a + b;
  19 }
  20
  21 __attribute__ ((noinline)) static double
  22 foo (double a, double b, double c, double d)
  23 {
  24  int aa = boo (b, c, d, a);
  25  return bar (a, b, c, d, (char *) alloca (aa))
  26         + bar (d, c, b, a, (char *) alloca (aa));
  27 }
  28
  29 int main ()
  30 {
  31   double a = 2.0, b = 3.0, c = 4.0, d = 5.0;
  32   double r1, r2;
  33   int aa;
  34
  35   aa = boo (b, c, d, a);
  36   r1 = bar (a, b, c, d, (char *) alloca (aa))
  37        + bar (d, c, b, a, (char *) alloca (aa));
  38   r2 = foo (a, b, c, d);
  39
  40   if (r1 != r2)
  41     abort ();
  42   return 0;
  43 }
  44