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* [Bug middle-end/17416] New: stack variable merging doesn't work
@ 2004-09-11 8:00 ak at muc dot de
2004-09-11 8:01 ` [Bug middle-end/17416] " ak at muc dot de
` (9 more replies)
0 siblings, 10 replies; 11+ messages in thread
From: ak at muc dot de @ 2004-09-11 8:00 UTC (permalink / raw)
To: gcc-bugs
I tried a simple test of the new stack merging functionality in mainline
and it refused to merge variables in differenct scopes.
e.g. the attached example generates with -O2:
f:
.LFB2:
subq $232, %rsp
I would have expected a stack frame size around 100
--
Summary: stack variable merging doesn't work
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ak at muc dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: x86_64-linux
GCC host triplet: x86_64-linux
GCC target triplet: x86_64-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
@ 2004-09-11 8:01 ` ak at muc dot de
2004-09-11 10:28 ` belyshev at lubercy dot com
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: ak at muc dot de @ 2004-09-11 8:01 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From ak at muc dot de 2004-09-11 08:01 -------
Created an attachment (id=7095)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7095&action=view)
test program for stack variable merging
Simple program with two local arrays in different scopes in the same function.
The arrays should be merged.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
2004-09-11 8:01 ` [Bug middle-end/17416] " ak at muc dot de
@ 2004-09-11 10:28 ` belyshev at lubercy dot com
2004-09-11 12:58 ` giovannibajo at libero dot it
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: belyshev at lubercy dot com @ 2004-09-11 10:28 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
GCC build triplet|x86_64-linux |
GCC host triplet|x86_64-linux |
GCC target triplet|x86_64-linux |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
2004-09-11 8:01 ` [Bug middle-end/17416] " ak at muc dot de
2004-09-11 10:28 ` belyshev at lubercy dot com
@ 2004-09-11 12:58 ` giovannibajo at libero dot it
2004-09-11 13:00 ` giovannibajo at libero dot it
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: giovannibajo at libero dot it @ 2004-09-11 12:58 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From giovannibajo at libero dot it 2004-09-11 12:58 -------
I cannot reproduce this on x86, not even at -O0:
./xgcc -B. -c -S -fomit-frame-pointer 17416.c
cat 17416.s
[...]
f:
subl $124, %esp
[...]
.ident "GCC: (GNU) 3.5.0 20040901 (experimental)"
Maybe it x86-64 specific?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
` (2 preceding siblings ...)
2004-09-11 12:58 ` giovannibajo at libero dot it
@ 2004-09-11 13:00 ` giovannibajo at libero dot it
2004-09-11 13:01 ` giovannibajo at libero dot it
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: giovannibajo at libero dot it @ 2004-09-11 13:00 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |giovannibajo at libero dot
| |it
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
` (3 preceding siblings ...)
2004-09-11 13:00 ` giovannibajo at libero dot it
@ 2004-09-11 13:01 ` giovannibajo at libero dot it
2004-09-11 13:21 ` ak at muc dot de
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: giovannibajo at libero dot it @ 2004-09-11 13:01 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
` (4 preceding siblings ...)
2004-09-11 13:01 ` giovannibajo at libero dot it
@ 2004-09-11 13:21 ` ak at muc dot de
2004-09-11 17:26 ` rth at gcc dot gnu dot org
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: ak at muc dot de @ 2004-09-11 13:21 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From ak at muc dot de 2004-09-11 13:21 -------
Some additional information:
with -m32 on the x86-64 compiler I get 218 bytes stack frame
With a pure i386 compiler I get 216 bytes.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
` (5 preceding siblings ...)
2004-09-11 13:21 ` ak at muc dot de
@ 2004-09-11 17:26 ` rth at gcc dot gnu dot org
2004-09-11 20:07 ` cvs-commit at gcc dot gnu dot org
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: rth at gcc dot gnu dot org @ 2004-09-11 17:26 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rth at gcc dot gnu dot org 2004-09-11 17:26 -------
Guh, looks like off-by-one buglet.
--
What |Removed |Added
----------------------------------------------------------------------------
CC|rth at gcc dot gnu dot org |
AssignedTo|unassigned at gcc dot gnu |rth at gcc dot gnu dot org
|dot org |
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2004-09-11 17:26:50
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
` (6 preceding siblings ...)
2004-09-11 17:26 ` rth at gcc dot gnu dot org
@ 2004-09-11 20:07 ` cvs-commit at gcc dot gnu dot org
2004-09-11 20:12 ` rth at gcc dot gnu dot org
2004-11-06 15:42 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-09-11 20:07 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-09-11 20:07 -------
Subject: Bug 17416
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: rth@gcc.gnu.org 2004-09-11 20:07:12
Modified files:
gcc : ChangeLog cfgexpand.c
Log message:
PR middle-end/17416
* cfgexpand.c (expand_used_vars_for_block): Fix off-by-one bug
in conflict loop.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.5398&r2=2.5399
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cfgexpand.c.diff?cvsroot=gcc&r1=2.22&r2=2.23
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
` (7 preceding siblings ...)
2004-09-11 20:07 ` cvs-commit at gcc dot gnu dot org
@ 2004-09-11 20:12 ` rth at gcc dot gnu dot org
2004-11-06 15:42 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: rth at gcc dot gnu dot org @ 2004-09-11 20:12 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rth at gcc dot gnu dot org 2004-09-11 20:12 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/17416] stack variable merging doesn't work
2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
` (8 preceding siblings ...)
2004-09-11 20:12 ` rth at gcc dot gnu dot org
@ 2004-11-06 15:42 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-11-06 15:42 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17416
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2004-11-06 15:42 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
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2004-09-11 8:00 [Bug middle-end/17416] New: stack variable merging doesn't work ak at muc dot de
2004-09-11 8:01 ` [Bug middle-end/17416] " ak at muc dot de
2004-09-11 10:28 ` belyshev at lubercy dot com
2004-09-11 12:58 ` giovannibajo at libero dot it
2004-09-11 13:00 ` giovannibajo at libero dot it
2004-09-11 13:01 ` giovannibajo at libero dot it
2004-09-11 13:21 ` ak at muc dot de
2004-09-11 17:26 ` rth at gcc dot gnu dot org
2004-09-11 20:07 ` cvs-commit at gcc dot gnu dot org
2004-09-11 20:12 ` rth at gcc dot gnu dot org
2004-11-06 15:42 ` pinskia at gcc dot gnu dot org
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