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Re: Fix delete_null_pointer_checks
On Wed, Feb 25, 2004 at 01:40:43PM +1030, Alan Modra wrote:
> * gcse.c (delete_null_pointer_checks_1): Do not delete CC setter
> unless HAVE_cc0.
>
> Index: gcc/gcse.c
> ===================================================================
> RCS file: /cvs/gcc/gcc/gcc/gcse.c,v
> retrieving revision 1.292
> diff -u -p -r1.292 gcse.c
> --- gcc/gcse.c 24 Feb 2004 10:34:22 -0000 1.292
> +++ gcc/gcse.c 25 Feb 2004 03:10:09 -0000
> @@ -6069,8 +6069,10 @@ delete_null_pointer_checks_1 (unsigned i
>
> something_changed = 1;
> delete_insn (last_insn);
> +#ifdef HAVE_cc0
> if (compare_and_branch == 2)
> delete_insn (earliest);
> +#endif
> purge_dead_edges (bb);
>
> /* Don't check this block again. (Note that BB_END is
Applied mainline and 3.4 on rth's OK via irc.
--
Alan Modra
IBM OzLabs - Linux Technology Centre