gcc/testsuite/gcc.target/m68k/pr48551.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -mcpu=5475" } */
   3
   4 /* This tickles a problem with reload on the m68k.  There's a reasonable
   5    chance it will get stale over time.  */
   6
   7 int frob;
   8 typedef double SplashCoord;
   9 void transform (SplashCoord xi, SplashCoord yi);
  10 void
  11 arf (SplashCoord x0, SplashCoord y0, SplashCoord x1, SplashCoord y1,
  12      SplashCoord x2, SplashCoord y2, SplashCoord x3, SplashCoord y3,
  13      SplashCoord * matrix, SplashCoord flatness2)
  14 {
  15   SplashCoord cx[(1 << 10) + 1][3];
  16   SplashCoord cy[(1 << 10) + 1][3];
  17   SplashCoord xl0, xl1, xl2, xr0, xr1, xr2, xr3, xx1, xx2, xh;
  18   SplashCoord yl0, yl1, yl2, yr0, yr1, yr2, yr3, yy1, yy2, yh;
  19   int p1, p2, p3;
  20   while (p1  < (1 << 10))
  21     {
  22       xl0 = cx[p1][0];
  23       xx2 = cx[p1][2];
  24       yy2 = cy[p1][2];
  25       transform (xx2, yy2);
  26       if (frob)
  27         {
  28           xl1 = (xl0 + xx1);
  29           xh = (xx1 + xx2);
  30           yl2 = (yl1 + yh);
  31           xr2 = (xx2 + xr3);
  32           yr2 = (yy2 + yr3) * 0.5;
  33           xr1 = (xh + xr2);
  34           yr1 = (yh + yr2);
  35           xr0 = (xl2 + xr1);
  36           yr0 = (yl2 + yr1);
  37           cx[p1][1] = xl1;
  38           cy[p1][1] = yl1;
  39           cx[p1][2] = xl2;
  40           cx[p3][0] = xr0;
  41           cy[p3][0] = yr0;
  42         }
  43     }
  44 }