Ping.
On Thu, Apr 04, 2013 at 04:01:09PM +0200, Marek Polacek wrote:
> This fixes an ICE in case we use weirdo --param value for
> PARAM_ALIGN_THRESHOLD. The patch is by Andrew; I added CL, testcase
> and tested.
>
> Bootstrapped/regtested on x86_64-linux, ok for trunk? And what about other
> branches?
>
> 2013-04-04 Marek Polacek <pola...@redhat.com>
> Andrew Pinski <apin...@cavium.com>
>
> PR tree-optimization/48184
> * final.c (compute_alignments): Set threshold to 0
> if PARAM_ALIGN_THRESHOLD is 0.
>
> * gcc.dg/pr48184.c: New test.
>
> --- gcc/final.c.mp 2013-04-04 14:09:04.626020852 +0200
> +++ gcc/final.c 2013-04-04 14:09:05.672024174 +0200
> @@ -701,7 +701,10 @@ compute_alignments (void)
> FOR_EACH_BB (bb)
> if (bb->frequency > freq_max)
> freq_max = bb->frequency;
> - freq_threshold = freq_max / PARAM_VALUE (PARAM_ALIGN_THRESHOLD);
> + if (PARAM_VALUE (PARAM_ALIGN_THRESHOLD) == 0)
> + freq_threshold = 0;
> + else
> + freq_threshold = freq_max / PARAM_VALUE (PARAM_ALIGN_THRESHOLD);
>
> if (dump_file)
> fprintf(dump_file, "freq_max: %i\n",freq_max);
> --- gcc/testsuite/gcc.dg/pr48184.c.mp 2013-04-04 13:23:15.356769534 +0200
> +++ gcc/testsuite/gcc.dg/pr48184.c 2013-04-04 14:05:05.506241464 +0200
> @@ -0,0 +1,5 @@
> +/* PR tree-optimization/48184 */
> +/* { dg-do compile } */
> +/* { dg-options "-O --param align-threshold=0" } */
> +
> +void foo (void) { }
>
> Marek
