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[Bug debug/49888] VTA: -O2 -g variable value changes, it does not change in the source
- From: "aoliva at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 13 Jun 2012 21:43:54 +0000
- Subject: [Bug debug/49888] VTA: -O2 -g variable value changes, it does not change in the source
- Auto-submitted: auto-generated
- References: <bug-49888-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49888
--- Comment #2 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2012-06-13 21:43:54 UTC ---
Author: aoliva
Date: Wed Jun 13 21:43:51 2012
New Revision: 188531
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=188531
Log:
gcc/ChangeLog:
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).
gcc/testsuite/ChangeLog:
PR debug/49888
* gcc.dg/guality/pr49888.c: New.
Added:
trunk/gcc/testsuite/gcc.dg/guality/pr49888.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/Makefile.in
trunk/gcc/testsuite/ChangeLog
trunk/gcc/var-tracking.c