Re: Simple code produces ICE in gcc-3.2.1

[Andrew Pinski <pinskia at physics dot uc dot edu>]

This also happens on a i686-pc-linux-gnu gcc 3.3,
but does not happen on a i686-pc-linux-gnu gcc 3.1.1
so it is a regression report it to the bug system, please.

3.3's version:
gcc version 3.3 20021023 (experimental)



Thanks,
Andrew Pinski

On Wednesday, Oct 23, 2002, at 22:01 US/Pacific, Steve Kargl wrote:

> The code fragment below causes an ICE if
> k = 1.  No ICE occurs if k = 0 or the
> optimization level is -O0 or -O1.
>
> troutmask:kargl[205] gcc -O2 -c c.c
> c.c: In function `ice':
> c.c:11: unrecognizable insn:
> (insn 179 170 188 (set (reg:SI 85)
>         (ashift:SI (reg/v:SI 62)
>             (const_int 1 [0x1]))) -1 (nil)
>     (nil))
> c.c:11: Internal compiler error in extract_insn, at recog.c:2150
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>
>
> kargl[203] gcc -v
> Using built-in specs.
> Configured with: FreeBSD/i386 system compiler
> Thread model: posix
> gcc version 3.2.1 [FreeBSD] 20021009 (prerelease)
>
> --
> Steve
>
> void ice(int m, int n, double *f) {
>
> 	int i, j, k;
>
>     /* k = 0;  No ICE */
>     k = 1;  /* ICE */
>
>     for (j = 0; j < n; j++) {
>         for (i = k; i < m; i++) {
>             f[i] = (double) (i * j);
>             f[i + j] = (double) ((i + 1) * j);
>         }
>     }
> }