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* [Bug debug/45673] -fcompare-debug failure with minor difference in dumps [not found] <bug-45673-4@http.gcc.gnu.org/bugzilla/> @ 2010-10-08 4:41 ` aoliva at gcc dot gnu.org 2010-10-08 5:50 ` aoliva at gcc dot gnu.org 1 sibling, 0 replies; 6+ messages in thread From: aoliva at gcc dot gnu.org @ 2010-10-08 4:41 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45673 --- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2010-10-08 04:41:06 UTC --- Author: aoliva Date: Fri Oct 8 04:40:59 2010 New Revision: 165149 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165149 Log: PR debug/45673 PR debug/45604 PR debug/45419 PR debug/45408 * tree-pretty-print.c (dump_generic_node): Explicitly dump the type of MEM_REFs to INTEGER_CSTs. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-pretty-print.c ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/45673] -fcompare-debug failure with minor difference in dumps [not found] <bug-45673-4@http.gcc.gnu.org/bugzilla/> 2010-10-08 4:41 ` [Bug debug/45673] -fcompare-debug failure with minor difference in dumps aoliva at gcc dot gnu.org @ 2010-10-08 5:50 ` aoliva at gcc dot gnu.org 1 sibling, 0 replies; 6+ messages in thread From: aoliva at gcc dot gnu.org @ 2010-10-08 5:50 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45673 Alexandre Oliva <aoliva at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2010-10-08 05:49:56 UTC --- Fixed ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/45673] New: -fcompare-debug failure with minor difference in dumps
@ 2010-09-14 23:40 zsojka at seznam dot cz
2010-09-14 23:43 ` [Bug debug/45673] " zsojka at seznam dot cz
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: zsojka at seznam dot cz @ 2010-09-14 23:40 UTC (permalink / raw)
To: gcc-bugs
Command line:
$ gcc -O3 -fcompare-debug -march=amdfam10 ada-langn.i
or
$ gcc -O2 -fcompare-debug -finline-functions -fipa-cp-clone
-fkeep-inline-functions ada-langn.i
(I am not able to reproduce it with these flags anymore)
or
$ gcc -O1 -fgcse -finline-small-functions -foptimize-sibling-calls -ftree-pre
-ftree-switch-conversion -ftree-vrp -fpartial-inlining -finline-functions
-fkeep-inline-functions -fcompare-debug ada-langn.i
The difference in dumps is small:
$ diff *gkd
107804c107804
< (const_int 32 [0x20])) [ MEM[(struct type *)0B].main_type+0
S8 A64])) ada-langn.i:15638# {*movdi_internal_rex64}
---
> (const_int 32 [0x20])) [ 0B->main_type+0 S8 A64])) ada-langn.i:15638# {*movdi_internal_rex64}
"MEM[(struct type *)0B]." <=> "0B->"
Tested revision:
r164287 - fail
r164280 - fail
r164228 - fail
--
Summary: -fcompare-debug failure with minor difference in dumps
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zsojka at seznam dot cz
GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45673
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug debug/45673] -fcompare-debug failure with minor difference in dumps 2010-09-14 23:40 [Bug debug/45673] New: " zsojka at seznam dot cz @ 2010-09-14 23:43 ` zsojka at seznam dot cz 2010-09-15 9:49 ` rguenth at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 6+ messages in thread From: zsojka at seznam dot cz @ 2010-09-14 23:43 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from zsojka at seznam dot cz 2010-09-14 23:43 ------- Created an attachment (id=21797) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21797&action=view) testcase, preprocessed ada-lang.c from GDB (licensed under GPLv2) Reducing is very slow, after 4 hours of delta run I got to ~16000 lines. So I am uploading the original testcase. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45673 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/45673] -fcompare-debug failure with minor difference in dumps 2010-09-14 23:40 [Bug debug/45673] New: " zsojka at seznam dot cz 2010-09-14 23:43 ` [Bug debug/45673] " zsojka at seznam dot cz @ 2010-09-15 9:49 ` rguenth at gcc dot gnu dot org 2010-09-21 8:02 ` aoliva at gcc dot gnu dot org 2010-09-21 8:53 ` aoliva at gcc dot gnu dot org 3 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu dot org @ 2010-09-15 9:49 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from rguenth at gcc dot gnu dot org 2010-09-15 09:49 ------- Another dumping artifact probably. At some point I'd like to dump all MEM_REFs as MEM[(...)p + cst] and drop the fancy ways. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45673 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/45673] -fcompare-debug failure with minor difference in dumps 2010-09-14 23:40 [Bug debug/45673] New: " zsojka at seznam dot cz 2010-09-14 23:43 ` [Bug debug/45673] " zsojka at seznam dot cz 2010-09-15 9:49 ` rguenth at gcc dot gnu dot org @ 2010-09-21 8:02 ` aoliva at gcc dot gnu dot org 2010-09-21 8:53 ` aoliva at gcc dot gnu dot org 3 siblings, 0 replies; 6+ messages in thread From: aoliva at gcc dot gnu dot org @ 2010-09-21 8:02 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from aoliva at gcc dot gnu dot org 2010-09-21 08:02 ------- Mine -- aoliva at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |aoliva at gcc dot gnu dot |dot org |org Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2010-09-21 08:02:06 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45673 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/45673] -fcompare-debug failure with minor difference in dumps 2010-09-14 23:40 [Bug debug/45673] New: " zsojka at seznam dot cz ` (2 preceding siblings ...) 2010-09-21 8:02 ` aoliva at gcc dot gnu dot org @ 2010-09-21 8:53 ` aoliva at gcc dot gnu dot org 3 siblings, 0 replies; 6+ messages in thread From: aoliva at gcc dot gnu dot org @ 2010-09-21 8:53 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from aoliva at gcc dot gnu dot org 2010-09-21 08:53 ------- Created an attachment (id=21854) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21854&action=view) Patch that fixes the problem Here's the patch I'm testing. Turns out it's not enough to take only the second pointer type into account, the first also matters because we'll get different dump output depending on whether they're equal or not. In this case, we failed to distinguish (void*)0B and (struct type*)0B in the first operands. Richi, care to pre-approve it in case it passes regstrap? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45673 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-10-08 5:50 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-45673-4@http.gcc.gnu.org/bugzilla/>
2010-10-08 4:41 ` [Bug debug/45673] -fcompare-debug failure with minor difference in dumps aoliva at gcc dot gnu.org
2010-10-08 5:50 ` aoliva at gcc dot gnu.org
2010-09-14 23:40 [Bug debug/45673] New: " zsojka at seznam dot cz
2010-09-14 23:43 ` [Bug debug/45673] " zsojka at seznam dot cz
2010-09-15 9:49 ` rguenth at gcc dot gnu dot org
2010-09-21 8:02 ` aoliva at gcc dot gnu dot org
2010-09-21 8:53 ` aoliva at gcc dot gnu dot org
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