* Revision 151561 breaks listdc++ 23_containers/forward_list/operations/6.cc
@ 2009-09-10 15:33 Jason Merrill
2009-09-10 15:48 ` Michael Matz
2009-09-10 15:52 ` Richard Guenther
0 siblings, 2 replies; 3+ messages in thread
From: Jason Merrill @ 2009-09-10 15:33 UTC (permalink / raw)
To: Richard Guenther, gcc-patches List
This change:
2009-09-09 Richard Guenther <rguenther@suse.de>
PR tree-optimization/41101
* tree-ssa-pre.c (maximal_set): Remove.
(compute_antic_aux): Treat the maximal set as implicitly all ones.
Defer all blocks we didn't visit at least one successor.
(add_to_exp_gen): Do not add to the maximal set.
(make_values_for_phi): Likewise.
(compute_avail): Likewise.
(init_pre): Do not allocate the maximal set.
(execute_pre): Do not dump it.
* gcc.c-torture/compile/pr41101.c: New testcase.
causes the above test to break on most targets.
Jason
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Revision 151561 breaks listdc++ 23_containers/forward_list/operations/6.cc
2009-09-10 15:33 Revision 151561 breaks listdc++ 23_containers/forward_list/operations/6.cc Jason Merrill
@ 2009-09-10 15:48 ` Michael Matz
2009-09-10 15:52 ` Richard Guenther
1 sibling, 0 replies; 3+ messages in thread
From: Michael Matz @ 2009-09-10 15:48 UTC (permalink / raw)
To: Jason Merrill; +Cc: Richard Guenther, gcc-patches List
Hi,
On Thu, 10 Sep 2009, Jason Merrill wrote:
> This change:
>
> 2009-09-09 Richard Guenther <rguenther@suse.de>
>
> PR tree-optimization/41101
> * tree-ssa-pre.c (maximal_set): Remove.
> (compute_antic_aux): Treat the maximal set as implicitly all ones.
> Defer all blocks we didn't visit at least one successor.
> (add_to_exp_gen): Do not add to the maximal set.
> (make_values_for_phi): Likewise.
> (compute_avail): Likewise.
> (init_pre): Do not allocate the maximal set.
> (execute_pre): Do not dump it.
>
> * gcc.c-torture/compile/pr41101.c: New testcase.
>
> causes the above test to break on most targets.
Yes, he said that in the gcc-patches mail. It's an aliasing violation in
libstdc++ headers and tracked as PR41316.
Ciao,
Michael.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Revision 151561 breaks listdc++ 23_containers/forward_list/operations/6.cc
2009-09-10 15:33 Revision 151561 breaks listdc++ 23_containers/forward_list/operations/6.cc Jason Merrill
2009-09-10 15:48 ` Michael Matz
@ 2009-09-10 15:52 ` Richard Guenther
1 sibling, 0 replies; 3+ messages in thread
From: Richard Guenther @ 2009-09-10 15:52 UTC (permalink / raw)
To: Jason Merrill; +Cc: gcc-patches List
On Thu, 10 Sep 2009, Jason Merrill wrote:
> This change:
>
> 2009-09-09 Richard Guenther <rguenther@suse.de>
>
> PR tree-optimization/41101
> * tree-ssa-pre.c (maximal_set): Remove.
> (compute_antic_aux): Treat the maximal set as implicitly all ones.
> Defer all blocks we didn't visit at least one successor.
> (add_to_exp_gen): Do not add to the maximal set.
> (make_values_for_phi): Likewise.
> (compute_avail): Likewise.
> (init_pre): Do not allocate the maximal set.
> (execute_pre): Do not dump it.
>
> * gcc.c-torture/compile/pr41101.c: New testcase.
>
> causes the above test to break on most targets.
See PR41316.
Richard.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-09-10 15:33 Revision 151561 breaks listdc++ 23_containers/forward_list/operations/6.cc Jason Merrill
2009-09-10 15:48 ` Michael Matz
2009-09-10 15:52 ` Richard Guenther
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