diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/20020426-2.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/20020426-2.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/20020426-2.c b/gcc/testsuite/gcc.dg/20020426-2.c new file mode 100644 index 00000000000..a0f7f69fcbd --- /dev/null +++ b/gcc/testsuite/gcc.dg/20020426-2.c @@ -0,0 +1,174 @@ +/* PR optimization/6475 + Distilled from zlib sources. */ +/* { dg-do run } */ +/* { dg-options "-O2" } */ +/* { dg-options "-O2 -frename-registers -fomit-frame-pointer -fPIC -mcpu=i686" { target i?86-*-* } } */ + +typedef struct +{ + union + { + struct + { + unsigned char a3; + unsigned char a4; + } a2; + unsigned int a5; + } a0; + unsigned int a1; +} A; + +static int +foo (unsigned int *b, unsigned int n, unsigned int s, const unsigned int *d, + const unsigned int *e, A **t, unsigned int *m, A *hp, unsigned int *hn, + unsigned int *v) +{ + unsigned int a, c[15 + 1], f; + int g, h; + unsigned int i, j, k; + int l; + unsigned int ee; + unsigned int *p; + A *q, r, *u[15]; + int w; + unsigned int x[15 + 1], *xx; + int y; + unsigned int z; + p = c; + *p++ = 0; *p++ = 0; *p++ = 0; *p++ = 0; + *p++ = 0; *p++ = 0; *p++ = 0; *p++ = 0; + *p++ = 0; *p++ = 0; *p++ = 0; *p++ = 0; + *p++ = 0; *p++ = 0; *p++ = 0; *p++ = 0; + p = b; + i = n; + do + c[*p++]++; + while (--i); + if (c[0] == n) + { + *t = (A *) 0; + *m = 0; + return 0; + } + l = *m; + for (j = 1; j <= 15; j++) + if (c[j]) + break; + k = j; + if ((unsigned int) l < j) + l = j; + for (i = 15; i; i--) + if (c[i]) + break; + g = i; + if ((unsigned int) l > i) + l = i; + *m = l; + for (y = 1 << j; j < i; j++, y <<= 1) + if ((y -= c[j]) < 0) + return -3; + if ((y -= c[i]) < 0) + return -3; + c[i] += y; + x[1] = j = 0; + p = c + 1; + xx = x + 2; + while (--i) + *xx++ = (j += *p++); + p = b; + i = 0; + do + if ((j = *p++) != 0) + v[x[j]++] = i; + while (++i < n); + n = x[g]; + x[0] = i = 0; + p = v; + h = -1; + w = -l; + u[0] = (A *) 0; + q = (A *) 0; + z = 0; + for (; k <= g; k++) + { + a = c[k]; + while (a--) + { + while (k > w + l) + { + h++; + w += l; + z = g - w; + z = z > (unsigned int) l ? l : z; + if ((f = 1 << (j = k - w)) > a + 1) + { + f -= a + 1; + xx = c + k; + if (j < z) + while (++j < z) + { + if ((f <<= 1) <= *++xx) + break; + f -= *xx; + } + } + z = 1 << j; + if (*hn + z > 1440) + return -3; + u[h] = q = hp + *hn; + *hn += z; + if (h) + { + x[h] = i; + r.a0.a2.a4 = (unsigned char) l; + r.a0.a2.a3 = (unsigned char) j; + j = i >> (w - l); + r.a1 = (unsigned int) (q - u[h - 1] - j); + u[h - 1][j] = r; + } + else + *t = q; + } + r.a0.a2.a4 = (unsigned char) (k - w); + if (p >= v + n) + r.a0.a2.a3 = 128 + 64; + else if (*p < s) + { + r.a0.a2.a3 = (unsigned char) (*p < 256 ? 0 : 32 + 64); + r.a1 = *p++; + } + else + { + r.a0.a2.a3 = (unsigned char) (e[*p - s] + 16 + 64); + r.a1 = d[*p++ - s]; + } + f = 1 << (k - w); + for (j = i >> w; j < z; j += f) + q[j] = r; + for (j = 1 << (k - 1); i & j; j >>= 1) + i ^= j; + i ^= j; + ee = (1 << w) - 1; + while ((i & ee) != x[h]) + { + h--; + w -= l; + ee = (1 << w) - 1; + } + } + } + return y != 0 && g != 1 ? (-5) : 0; +} + +int a[19] = { 3, 4, 0, 2, 2, [17] = 3, 3 }; +int d[19]; +A h[1440]; + +int +main (void) +{ + int b = 0, c = 0; + A *e = 0; + foo (a, 19, 19, 0, 0, &e, &b, h, &c, d); + exit (0); +} |