[lno] Two vectorizer ICEs

[Falk Hueffner <falk dot hueffner at student dot uni-tuebingen dot de>]

Hi,

two vectorizer bugs, with gcc (GCC) 3.5-tree-ssa-lno 20040210 (merged
20040120), on alphaev68-linux with #define UNITS_PER_SIMD_WORD 8.

First one is a division by zero for empty structs (gcc extension):

% cat lno-bug1.c
struct kbd_struct { };
extern struct kbd_struct kbd_table[];
static struct kbd_struct kbd0;
void kbd_init(void)
{
    int i;
    for (i = 0; i < 63; i++)
        kbd_table[i] = kbd0;
}

% gcc -c lno-bug1.c -O3 -ftree-vectorize
lno-bug1.c: In function `kbd_init':
lno-bug1.c:5: internal compiler error: Floating point exception
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Second one:

% cat lno-bug2.c
static int compute_branch_probabilities(void)
{
    int i, hist_br_prob[20];
    for (i = 0; i < 20; i++)
        hist_br_prob[i] = 0;
    return hist_br_prob[i - 1];
}

% gcc -c -O lno-bug2.c -ftree-vectorize
lno-bug2.c: In function `compute_branch_probabilities':
lno-bug2.c:2: error: address taken, but ADDRESABLE bit not set
hist_br_prob

lno-bug2.c:2: internal compiler error: verify_stmts failed.
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Note, this one doesn't happen at -O2.

-- 
	Falk