REGRESSION in 3.2.1-pre on mips-irix6 (and elsewhere) compiling execute/20011219-1.c

[Franz Sirl]

At 01:12 14.11.2002, Graham Stott wrote:
>All,
>
>Graham Stott wrote:
>>Jan,
>>I've reproduced the problem on a mips-sgi-irix6.5 cross.
>>Ok now to do some digging.
>>Graham
>
>Can those people with access to failing targets please try the following
>patch.
>
>I'm going to do a i686-pc-linux-gnu bootstrap over night as an minimal
>sanity check.
>
>The problem is the DEAD jumptable should have been deleted but wasn't
>because the label had an incorrect NUSES so the delete_dead_jumptables
>thought it was still used.
>
>Rebuilding the NUSES field of all label_refs at the end of life analysis
>and immediately prior to the purging dead jumptables we allow the
>delete_dead_jumptables routine to purge all the dead jump tables.
>
>We are going to take a performance hit with this patch but I'm not
>sure how significant it'll be.
>
>Comments.
>
>Graham
>
>ChangeLog
>
>       * flow.c(life_analysis): Update LABEL_NUSES before purging
>       dead jumptables.

This patch has no effect on powerpc-linux-gnu, both testcases still fail in 
the same way.

Franz.