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* [Bug debug/32444] New: missing debug information for structure components
@ 2007-06-21 0:51 geoffk at gcc dot gnu dot org
2007-06-21 1:08 ` [Bug debug/32444] " geoffk at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: geoffk at gcc dot gnu dot org @ 2007-06-21 0:51 UTC (permalink / raw)
To: gcc-bugs
Given the following short program,
struct pt
{
int x, y;
};
struct pt sum(struct pt *p)
{
struct pt tmp = { 0, 0 };
int i;
for (i = 0; i < 100; i++)
{
tmp.x += p[i].x;
tmp.y += p[i].y;
}
return tmp;
}
on powerpc-darwin, built with -O2, I see that the main loop is storing tmp.x in
r8 and tmp.y in r10 (or possibly the other way around). Yet, the debug
information contains no location information for 'tmp'. A similar thing
happens on i386-darwin where the values are stored in eax and edx.
Also, on i386-darwin, 'i' is also not present in the debug information,
although it is in %ecx.
L2:
addl -8(%esi,%ecx,8), %eax
addl -4(%esi,%ecx,8), %edx
addl $1, %ecx
cmpl $101, %ecx
jne L2
--
Summary: missing debug information for structure components
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: geoffk at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32444
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug debug/32444] missing debug information for structure components
2007-06-21 0:51 [Bug debug/32444] New: missing debug information for structure components geoffk at gcc dot gnu dot org
@ 2007-06-21 1:08 ` geoffk at gcc dot gnu dot org
2007-06-21 1:13 ` geoffk at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: geoffk at gcc dot gnu dot org @ 2007-06-21 1:08 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from geoffk at gcc dot gnu dot org 2007-06-21 01:08 -------
Happens even with -O1. One of the causes is SRA, but there's more...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32444
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug debug/32444] missing debug information for structure components
2007-06-21 0:51 [Bug debug/32444] New: missing debug information for structure components geoffk at gcc dot gnu dot org
2007-06-21 1:08 ` [Bug debug/32444] " geoffk at gcc dot gnu dot org
@ 2007-06-21 1:13 ` geoffk at gcc dot gnu dot org
2007-06-21 1:24 ` geoffk at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: geoffk at gcc dot gnu dot org @ 2007-06-21 1:13 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from geoffk at gcc dot gnu dot org 2007-06-21 01:13 -------
The problem with 'i' is ivopts.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32444
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug debug/32444] missing debug information for structure components
2007-06-21 0:51 [Bug debug/32444] New: missing debug information for structure components geoffk at gcc dot gnu dot org
2007-06-21 1:08 ` [Bug debug/32444] " geoffk at gcc dot gnu dot org
2007-06-21 1:13 ` geoffk at gcc dot gnu dot org
@ 2007-06-21 1:24 ` geoffk at gcc dot gnu dot org
2007-06-21 9:01 ` [Bug debug/32444] missing debug information for structure components with optimized code pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: geoffk at gcc dot gnu dot org @ 2007-06-21 1:24 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from geoffk at gcc dot gnu dot org 2007-06-21 01:24 -------
I split out the problem with 'i' to PR 32445.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32444
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug debug/32444] missing debug information for structure components with optimized code
2007-06-21 0:51 [Bug debug/32444] New: missing debug information for structure components geoffk at gcc dot gnu dot org
` (2 preceding siblings ...)
2007-06-21 1:24 ` geoffk at gcc dot gnu dot org
@ 2007-06-21 9:01 ` pinskia at gcc dot gnu dot org
2007-06-21 9:03 ` pinskia at gcc dot gnu dot org
2007-06-24 4:04 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-06-21 9:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2007-06-21 09:01 -------
First temp is SRA'd so the debugging info should be correct unless tracking is
wrong. Second iv-opts is messing up the debuging info for i by creating a new
variable.
I think this is a feature we would like to support but is not something we need
to support that well.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Summary|missing debug information |missing debug information
|for structure components |for structure components
| |with optimized code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32444
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug debug/32444] missing debug information for structure components with optimized code
2007-06-21 0:51 [Bug debug/32444] New: missing debug information for structure components geoffk at gcc dot gnu dot org
` (3 preceding siblings ...)
2007-06-21 9:01 ` [Bug debug/32444] missing debug information for structure components with optimized code pinskia at gcc dot gnu dot org
@ 2007-06-21 9:03 ` pinskia at gcc dot gnu dot org
2007-06-24 4:04 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-06-21 9:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from pinskia at gcc dot gnu dot org 2007-06-21 09:03 -------
Actually SRA should be ok, because we do keep tracking them on the tree level.
Daniel Berlin added this code.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32444
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug debug/32444] missing debug information for structure components with optimized code
2007-06-21 0:51 [Bug debug/32444] New: missing debug information for structure components geoffk at gcc dot gnu dot org
` (4 preceding siblings ...)
2007-06-21 9:03 ` pinskia at gcc dot gnu dot org
@ 2007-06-24 4:04 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-06-24 4:04 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from pinskia at gcc dot gnu dot org 2007-06-24 04:04 -------
http://gcc.gnu.org/ml/gcc/2005-01/msg00016.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32444
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2007-06-24 4:04 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2007-06-21 0:51 [Bug debug/32444] New: missing debug information for structure components geoffk at gcc dot gnu dot org
2007-06-21 1:08 ` [Bug debug/32444] " geoffk at gcc dot gnu dot org
2007-06-21 1:13 ` geoffk at gcc dot gnu dot org
2007-06-21 1:24 ` geoffk at gcc dot gnu dot org
2007-06-21 9:01 ` [Bug debug/32444] missing debug information for structure components with optimized code pinskia at gcc dot gnu dot org
2007-06-21 9:03 ` pinskia at gcc dot gnu dot org
2007-06-24 4:04 ` pinskia at gcc dot gnu dot org
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