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* [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results
@ 2004-09-14 5:48 ovidr at users dot sourceforge dot net
2004-09-14 6:07 ` [Bug tree-optimization/17474] " pinskia at gcc dot gnu dot org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: ovidr at users dot sourceforge dot net @ 2004-09-14 5:48 UTC (permalink / raw)
To: gcc-bugs
Thread model: win32
gcc version 4.0.0 20040913 (experimental)
gcj --main=codes codes.java (works)
gcj -O1 --main=codes codes.java (gives different results)
class codes {
static int[] lengths;
static int[] codeValues;
public static void main(String[] args) {
lengths = new int[] {6,0,0,7,5,5,4,5,4,4,4,3,3,3,3,4,4,7,0};
codeValues = new int[lengths.length];
for (int i = 0; i < codeValues.length; i++) {
codeValues[i] = i;
}
// Sort the values. Primary key is code size. Secondary key is value.
for (int i = 0; i < lengths.length - 1; i++) {
for (int j = i + 1; j < lengths.length; j++) {
if (lengths[j] < lengths[i]
|| (lengths[j] == lengths[i]
&& codeValues[j] < codeValues[i]))
{
int tmp;
tmp = lengths[j];
lengths[j] = lengths[i];
lengths[i] = tmp;
tmp = codeValues[j];
codeValues[j] = codeValues[i];
codeValues[i] = tmp;
}
}
}
int[] codes = new int[lengths.length];
int lastLength = 0;
int code = 0;
for (int i = 0; i < lengths.length; i++) {
while (lastLength != lengths[i]) {
lastLength++;
code <<= 1;
System.out.println("SET CODE: " + code);
}
if (lastLength != 0) {
codes[i] = code;
System.out.println("(Should be equal) SET CODES[" + i + "] = " + code
+ " = " + codes[i]);
code++;
}
}
}
}
--
Summary: [4.0 Regression] Compiling at -01 yields different
results
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: java
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ovidr at users dot sourceforge dot net
CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
@ 2004-09-14 6:07 ` pinskia at gcc dot gnu dot org
2004-09-15 3:41 ` pinskia at gcc dot gnu dot org
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-09-14 6:07 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-09-14 06:07 -------
These all look wrong:
- T.235_214 = codes_85->data[i_910];
+ codes_880 = T.291_849;
+ T.235_214 = *codes_880;
- codes_85->data[i_910] = code_19;
+ T.287_876 = &codes_85->data[0];
+ T.288_873 = (<unnamed type>) i_910;
+ T.289_856 = (int *) T.288_873;
+ T.290_851 = T.289_856 * 4B;
+ T.291_849 = T.290_851 + T.287_876;
+ codes_847 = T.291_849;
+ codes_847->length = code_298;
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
Component|java |tree-optimization
Keywords| |wrong-code
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
2004-09-14 6:07 ` [Bug tree-optimization/17474] " pinskia at gcc dot gnu dot org
@ 2004-09-15 3:41 ` pinskia at gcc dot gnu dot org
2004-09-17 1:50 ` giovannibajo at libero dot it
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-09-15 3:41 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-09-15 03:41 -------
Confirmed, -fno-ivopts fixes the problem.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |rakdver at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2004-09-15 03:41:02
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
2004-09-14 6:07 ` [Bug tree-optimization/17474] " pinskia at gcc dot gnu dot org
2004-09-15 3:41 ` pinskia at gcc dot gnu dot org
@ 2004-09-17 1:50 ` giovannibajo at libero dot it
2004-09-19 21:53 ` rakdver at gcc dot gnu dot org
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: giovannibajo at libero dot it @ 2004-09-17 1:50 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From giovannibajo at libero dot it 2004-09-17 01:49 -------
Assigning to Zdenek, as ivopts is his beast.
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rakdver at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
` (2 preceding siblings ...)
2004-09-17 1:50 ` giovannibajo at libero dot it
@ 2004-09-19 21:53 ` rakdver at gcc dot gnu dot org
2004-09-24 20:43 ` rakdver at gcc dot gnu dot org
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rakdver at gcc dot gnu dot org @ 2004-09-19 21:53 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rakdver at gcc dot gnu dot org 2004-09-19 21:53 -------
Patch:
http://gcc.gnu.org/ml/gcc-patches/2004-09/msg01897.html
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
` (3 preceding siblings ...)
2004-09-19 21:53 ` rakdver at gcc dot gnu dot org
@ 2004-09-24 20:43 ` rakdver at gcc dot gnu dot org
2004-09-25 11:07 ` cvs-commit at gcc dot gnu dot org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rakdver at gcc dot gnu dot org @ 2004-09-24 20:43 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From rakdver at gcc dot gnu dot org 2004-09-24 20:43 -------
And one more patch:
http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02591.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
` (4 preceding siblings ...)
2004-09-24 20:43 ` rakdver at gcc dot gnu dot org
@ 2004-09-25 11:07 ` cvs-commit at gcc dot gnu dot org
2004-11-27 2:14 ` neroden at gcc dot gnu dot org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-09-25 11:07 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-09-25 11:07 -------
Subject: Bug 17474
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: rakdver@gcc.gnu.org 2004-09-25 11:06:46
Modified files:
gcc : ChangeLog tree-ssa-ccp.c
Log message:
PR tree-optimization/17474
* tree-ssa-ccp.c (maybe_fold_offset_to_component_ref): Determine
offset of the field correctly when DECL_FIELD_BIT_OFFSET != 0.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.5618&r2=2.5619
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-ccp.c.diff?cvsroot=gcc&r1=2.44&r2=2.45
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
` (5 preceding siblings ...)
2004-09-25 11:07 ` cvs-commit at gcc dot gnu dot org
@ 2004-11-27 2:14 ` neroden at gcc dot gnu dot org
2004-11-27 21:20 ` neroden at gcc dot gnu dot org
2004-12-05 21:02 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: neroden at gcc dot gnu dot org @ 2004-11-27 2:14 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From neroden at gcc dot gnu dot org 2004-11-27 02:14 -------
One of the patches is in; the other one generated a lot of debate and is
apparently not sufficient, so removing patch tag.
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords|patch |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
` (6 preceding siblings ...)
2004-11-27 2:14 ` neroden at gcc dot gnu dot org
@ 2004-11-27 21:20 ` neroden at gcc dot gnu dot org
2004-12-05 21:02 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: neroden at gcc dot gnu dot org @ 2004-11-27 21:20 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
OtherBugsDependingO| |18693
nThis| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/17474] [4.0 Regression] Compiling at -01 yields different results
2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
` (7 preceding siblings ...)
2004-11-27 21:20 ` neroden at gcc dot gnu dot org
@ 2004-12-05 21:02 ` pinskia at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-12-05 21:02 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-05 21:02 -------
The testcase has already been fixed so closing.
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|critical |normal
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17474
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2004-12-05 21:02 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
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2004-09-14 5:48 [Bug java/17474] New: [4.0 Regression] Compiling at -01 yields different results ovidr at users dot sourceforge dot net
2004-09-14 6:07 ` [Bug tree-optimization/17474] " pinskia at gcc dot gnu dot org
2004-09-15 3:41 ` pinskia at gcc dot gnu dot org
2004-09-17 1:50 ` giovannibajo at libero dot it
2004-09-19 21:53 ` rakdver at gcc dot gnu dot org
2004-09-24 20:43 ` rakdver at gcc dot gnu dot org
2004-09-25 11:07 ` cvs-commit at gcc dot gnu dot org
2004-11-27 2:14 ` neroden at gcc dot gnu dot org
2004-11-27 21:20 ` neroden at gcc dot gnu dot org
2004-12-05 21:02 ` pinskia at gcc dot gnu dot org
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