public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug debug/45882] New: No debug info for vars depending on unused parameter
@ 2010-10-04 15:12 jakub at gcc dot gnu.org
2011-03-16 9:14 ` [Bug debug/45882] " jakub at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2010-10-04 15:12 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45882
Summary: No debug info for vars depending on unused parameter
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: jakub@gcc.gnu.org
CC: aoliva@gcc.gnu.org
On the attached testcase, b, c, d and e vars unnecessarily don't have any
DW_AT_location information in the debug info.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug debug/45882] No debug info for vars depending on unused parameter
2010-10-04 15:12 [Bug debug/45882] New: No debug info for vars depending on unused parameter jakub at gcc dot gnu.org
@ 2011-03-16 9:14 ` jakub at gcc dot gnu.org
2012-11-08 20:44 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-03-16 9:14 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45882
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-16 08:35:41 UTC ---
Author: jakub
Date: Wed Mar 16 08:35:31 2011
New Revision: 171035
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171035
Log:
PR debug/45882
* rtl.def (ENTRY_VALUE): Change format from "e" to "0".
* rtl.h (ENTRY_VALUE_EXP): Define.
* rtl.c (rtx_equal_p_cb, rtx_equal_p): Handle ENTRY_VALUE.
* cselib.c (rtx_equal_for_cselib_p, cselib_hash_rtx): Likewise.
* print-rtl.c (print_rtx): Likewise.
* gengtype.c (adjust_field_rtx_def): Likewise.
* var-tracking.c (vt_add_function_parameter): Adjust
gen_rtx_ENTRY_VALUE uses, use ENTRY_VALUE_EXP macro.
* dwarf2out.c (mem_loc_descriptor): Use ENTRY_VALUE_EXP macro.
* cfgexpand.c (expand_debug_expr): If a SSA_NAME without
partition is a default definition of a PARM_DECL, use ENTRY_VALUE
of its DECL_INCOMING_RTL if possible, or its DECL_RTL if set.
* gcc.dg/guality/pr45882.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/guality/pr45882.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgexpand.c
trunk/gcc/cselib.c
trunk/gcc/dwarf2out.c
trunk/gcc/gengtype.c
trunk/gcc/print-rtl.c
trunk/gcc/rtl.c
trunk/gcc/rtl.def
trunk/gcc/rtl.h
trunk/gcc/testsuite/ChangeLog
trunk/gcc/var-tracking.c
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug debug/45882] No debug info for vars depending on unused parameter
2010-10-04 15:12 [Bug debug/45882] New: No debug info for vars depending on unused parameter jakub at gcc dot gnu.org
2011-03-16 9:14 ` [Bug debug/45882] " jakub at gcc dot gnu.org
@ 2012-11-08 20:44 ` jakub at gcc dot gnu.org
2013-04-01 16:39 ` steven at gcc dot gnu.org
2013-04-01 18:11 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-11-08 20:44 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45882
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.7.0
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-08 20:43:54 UTC ---
Fixed for 4.7+.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug debug/45882] No debug info for vars depending on unused parameter
2010-10-04 15:12 [Bug debug/45882] New: No debug info for vars depending on unused parameter jakub at gcc dot gnu.org
2011-03-16 9:14 ` [Bug debug/45882] " jakub at gcc dot gnu.org
2012-11-08 20:44 ` jakub at gcc dot gnu.org
@ 2013-04-01 16:39 ` steven at gcc dot gnu.org
2013-04-01 18:11 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: steven at gcc dot gnu.org @ 2013-04-01 16:39 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45882
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |steven at gcc dot gnu.org
--- Comment #4 from Steven Bosscher <steven at gcc dot gnu.org> 2013-04-01 16:39:05 UTC ---
Jakub, do you remember what this change was necessary for:
* rtl.def (ENTRY_VALUE): Change format from "e" to "0".
I'm reviewing the "0" fields and I don't understand why ENTRY_VALUE
has this "0" instead of "e".
Hope you remember :-)
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug debug/45882] No debug info for vars depending on unused parameter
2010-10-04 15:12 [Bug debug/45882] New: No debug info for vars depending on unused parameter jakub at gcc dot gnu.org
` (2 preceding siblings ...)
2013-04-01 16:39 ` steven at gcc dot gnu.org
@ 2013-04-01 18:11 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-04-01 18:11 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45882
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-01 18:11:07 UTC ---
ENTRY_VALUE's operand is 0, because in most cases you don't want to let the
various RTL passes to see through the ENTRY_VALUE rtl, they should treat the
RTL as a black box, mostly when you want to look at the operand is either for
rtx_equal_p and similar functions, or when creating those or when the debug
info is emitted from it. If ENTRY_VALUE's operand is e rather than 0, e.g.
various RTL passes would consider the there referenced hard register (or
memory) to be live at that point, or used, etc., but it actually isn't used.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-04-01 18:11 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-10-04 15:12 [Bug debug/45882] New: No debug info for vars depending on unused parameter jakub at gcc dot gnu.org
2011-03-16 9:14 ` [Bug debug/45882] " jakub at gcc dot gnu.org
2012-11-08 20:44 ` jakub at gcc dot gnu.org
2013-04-01 16:39 ` steven at gcc dot gnu.org
2013-04-01 18:11 ` jakub at gcc dot gnu.org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).