1/* PR target/7042.  When reorg.c changed branches into return insns, it
2   completely forgot about any current_function_epilogue_delay_list and
3   dropped those insns.  Uncovered on cris-axis-elf, where an insn in an
4   epilogue delay-slot set the return-value register with the testcase
5   below.  Derived from ghostscript-6.52 (GPL) by hp@axis.com.  */
6
7typedef struct font_hints_s {
8  int axes_swapped;
9  int x_inverted, y_inverted;
10} font_hints;
11typedef struct gs_fixed_point_s {
12  long x, y;
13} gs_fixed_point;
14
15int
16line_hints(const font_hints *fh, const gs_fixed_point *p0,
17	   const gs_fixed_point *p1)
18{
19  long dx = p1->x - p0->x;
20  long dy = p1->y - p0->y;
21  long adx, ady;
22  int xi = fh->x_inverted, yi = fh->y_inverted;
23  int hints;
24  if (xi)
25    dx = -dx;
26  if (yi)
27    dy = -dy;
28  if (fh->axes_swapped) {
29    long t = dx;
30    int ti = xi;
31    dx = dy, xi = yi;
32    dy = t, yi = ti;
33  }
34  adx = dx < 0 ? -dx : dx;
35  ady = dy < 0 ? -dy : dy;
36  if (dy != 0 && (adx <= ady >> 4)) {
37    hints = dy > 0 ? 2 : 1;
38    if (xi)
39      hints ^= 3;
40  } else if (dx != 0 && (ady <= adx >> 4)) {
41    hints = dx < 0 ? 8 : 4;
42    if (yi)
43      hints ^= 12;
44  } else
45    hints = 0;
46  return hints;
47}
48int main ()
49{
50  static font_hints fh[] = {{0, 1, 0}, {0, 0, 1}, {0, 0, 0}};
51  static gs_fixed_point gsf[]
52    = {{0x30000, 0x13958}, {0x30000, 0x18189},
53       {0x13958, 0x30000}, {0x18189, 0x30000}};
54  if (line_hints (fh, gsf, gsf + 1) != 1
55      || line_hints (fh + 1, gsf + 2, gsf + 3) != 8
56      || line_hints (fh + 2, gsf + 2, gsf + 3) != 4)
57    abort ();
58  exit (0);
59}
60