Viewing file:  20020615-1.c (1.53 KB) -rw-r--r--
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/* PR target/7042. When reorg.c changed branches into return insns, it
completely forgot about any current_function_epilogue_delay_list and
dropped those insns. Uncovered on cris-axis-elf, where an insn in an
epilogue delay-slot set the return-value register with the testcase
below. Derived from ghostscript-6.52 (GPL) by hp@axis.com. */
typedef struct font_hints_s {
int axes_swapped;
int x_inverted, y_inverted;
} font_hints;
typedef struct gs_fixed_point_s {
long x, y;
} gs_fixed_point;
int
line_hints(const font_hints *fh, const gs_fixed_point *p0,
const gs_fixed_point *p1)
{
long dx = p1->x - p0->x;
long dy = p1->y - p0->y;
long adx, ady;
int xi = fh->x_inverted, yi = fh->y_inverted;
int hints;
if (xi)
dx = -dx;
if (yi)
dy = -dy;
if (fh->axes_swapped) {
long t = dx;
int ti = xi;
dx = dy, xi = yi;
dy = t, yi = ti;
}
adx = dx < 0 ? -dx : dx;
ady = dy < 0 ? -dy : dy;
if (dy != 0 && (adx <= ady >> 4)) {
hints = dy > 0 ? 2 : 1;
if (xi)
hints ^= 3;
} else if (dx != 0 && (ady <= adx >> 4)) {
hints = dx < 0 ? 8 : 4;
if (yi)
hints ^= 12;
} else
hints = 0;
return hints;
}
int main ()
{
static font_hints fh[] = {{0, 1, 0}, {0, 0, 1}, {0, 0, 0}};
static gs_fixed_point gsf[]
= {{0x30000, 0x13958}, {0x30000, 0x18189},
{0x13958, 0x30000}, {0x18189, 0x30000}};
if (line_hints (fh, gsf, gsf + 1) != 1
|| line_hints (fh + 1, gsf + 2, gsf + 3) != 8
|| line_hints (fh + 2, gsf + 2, gsf + 3) != 4)
abort ();
exit (0);
}
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