[PATCH]: realloc insn table in df_modify_insn, if necessary

[Daniel Berlin]

law@redhat.com writes:

>   In message < 87wv3qzwyr.fsf@cgsoftware.com >you write:
>   > This is obvious, and has been committed.
>   > 
>   > It's necessary because with out, df_insn_modify will crash when doing
>   > incremental updates.
>   > 
>   > 2001-08-26  Daniel Berlin  <dan@cgsoftware.com>
>   >  
>   > 	* df.c (df_insn_modify): Realloc the INSN table here, if
>   > 	necessary, here, too.
> I consider this *far* from obvious.
>
> Under precisely what conditions did you end up with a UID outside the
> range that the DF analyzer knows about?
Easy.
Call df_insn_modify on a new insn.
"If the dataflow information requires updating then all the changed,
new, or deleted insns needs to be marked with df_insn_modify".
It never reallocs the table unless it emitted the insn, and called an
internal function.
Which is clearly wrong.

Just as you've worked more with GCSE than I have, i've worked more on
the df analyzer than you have.



>
> jeff
>
>
>

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