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Re: [PR49888, VTA] don't keep VALUEs bound to modified MEMs
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Richard Henderson <rth at redhat dot com>
- Cc: Alexandre Oliva <aoliva at redhat dot com>, Jakub Jelinek <jakub at redhat dot com>, gcc-patches at gcc dot gnu dot org
- Date: Thu, 14 Jun 2012 07:43:01 -0700
- Subject: Re: [PR49888, VTA] don't keep VALUEs bound to modified MEMs
- References: <orhav7nt6u.fsf@livre.localdomain> <20120523101349.GN16117@tyan-ft48-01.lab.bos.redhat.com> <ory5o1d04j.fsf@livre.localdomain> <4FD7A9BE.4080405@redhat.com>
On Tue, Jun 12, 2012 at 1:42 PM, Richard Henderson <rth@redhat.com> wrote:
> On 2012-06-05 12:33, Alexandre Oliva wrote:
>> for ?gcc/ChangeLog
>> from ?Alexandre Oliva ?<aoliva@redhat.com>
>>
>> ? ? ? PR debug/49888
>> ? ? ? * var-tracking.c: Include alias.h.
>> ? ? ? (overlapping_mems): New struct.
>> ? ? ? (drop_overlapping_mem_locs): New.
>> ? ? ? (clobber_overlapping_mems): New.
>> ? ? ? (var_mem_delete_and_set, var_mem_delete): Call it.
>> ? ? ? (val_bind): Likewise, but only if modified.
>> ? ? ? (compute_bb_dataflow, emit_notes_in_bb): Call it on MEMs.
>> ? ? ? * Makefile.in (var-tracking.o): Depend in $(ALIAS_H).
>>
>> for ?gcc/testsuite/ChangeLog
>> from ?Alexandre Oliva ?<aoliva@redhat.com>
>>
>> ? ? ? PR debug/49888
>> ? ? ? * gcc.dg/guality/pr49888.c: New.
>
> Ok.
>
>
It caused:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53671
--
H.J.