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* [Bug tree-optimization/36181] New: Simple for loop generates ICE with -ftree-parallelize-loops=2
@ 2008-05-08 17:04 runeerle at stud dot ntnu dot no
2008-05-09 9:11 ` [Bug tree-optimization/36181] " rguenth at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: runeerle at stud dot ntnu dot no @ 2008-05-08 17:04 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 2296 bytes --]
This simple test case fails:
--------------------------
#include <stdio.h>
int main(int argc, const char* argv[])
{
int data[1024];
int sum = 0;
int i = 0;
for(; i<1024; i++)
sum += data[i];
printf("%d", sum);
return 0;
}
--------------------------
Options and output:
$ gcc-4.3 -O3 -ftree-parallelize-loops=2 main2.c -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure linux gnu
Thread model: posix
gcc version 4.3.0 (Ubuntu 4.3.0-1ubuntu1)
COLLECT_GCC_OPTIONS='-O3' '-ftree-parallelize-loops=2' '-v' '-mtune=generic'
'-pthread'
/usr/lib/gcc/x86_64-linux-gnu/4.3.0/cc1 -quiet -v -D_REENTRANT main2.c -quiet
-dumpbase main2.c -mtune=generic -auxbase main2 -O3 -version
-ftree-parallelize-loops=2 -fstack-protector -fstack-protector -o
/tmp/cclHEQpb.s
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/4.3.0/../../../../x86_64-linux-gnu/include"
ignoring nonexistent directory "/usr/include/x86_64-linux-gnu"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/4.3.0/include
/usr/lib/gcc/x86_64-linux-gnu/4.3.0/include-fixed
/usr/include
End of search list.
GNU C (Ubuntu 4.3.0-1ubuntu1) version 4.3.0 (x86_64-linux-gnu)
compiled by GNU C version 4.3.0, GMP version 4.2.2, MPFR version 2.3.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 1cbb7f16ebc5c81a75d8a2ed8f02da6b
main2.c: In function main:
main2.c:4: internal compiler error: in canonicalize_loop_ivs, at
tree-parloops.c:1329
Please submit a full bug report,
with preprocessed source if appropriate.
--
Summary: Simple for loop generates ICE with -ftree-parallelize-
loops=2
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: runeerle at stud dot ntnu dot no
GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36181
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/36181] Simple for loop generates ICE with -ftree-parallelize-loops=2
2008-05-08 17:04 [Bug tree-optimization/36181] New: Simple for loop generates ICE with -ftree-parallelize-loops=2 runeerle at stud dot ntnu dot no
@ 2008-05-09 9:11 ` rguenth at gcc dot gnu dot org
2008-05-20 19:18 ` spop at gcc dot gnu dot org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-05-09 9:11 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-05-09 09:10 -------
The integer vector operation
(gdb) call debug_generic_expr (phi)
vect_var_.32_20 = PHI <vect_var_.32_21(4), { 0, 0, 0, 0 }(9)>
is not considered a simple iv.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rakdver at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |ice-on-valid-code
Known to fail| |4.3.0 4.4.0
Last reconfirmed|0000-00-00 00:00:00 |2008-05-09 09:10:34
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36181
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/36181] Simple for loop generates ICE with -ftree-parallelize-loops=2
2008-05-08 17:04 [Bug tree-optimization/36181] New: Simple for loop generates ICE with -ftree-parallelize-loops=2 runeerle at stud dot ntnu dot no
2008-05-09 9:11 ` [Bug tree-optimization/36181] " rguenth at gcc dot gnu dot org
@ 2008-05-20 19:18 ` spop at gcc dot gnu dot org
2008-05-20 19:24 ` spop at gcc dot gnu dot org
2008-05-21 15:58 ` spop at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: spop at gcc dot gnu dot org @ 2008-05-20 19:18 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from spop at gcc dot gnu dot org 2008-05-20 19:17 -------
Subject: Bug 36181
Author: spop
Date: Tue May 20 19:17:12 2008
New Revision: 135673
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135673
Log:
2008-05-20 Sebastian Pop <sebastian.pop@amd.com>
Jan Sjodin <jan.sjodin@amd.com>
PR tree-optimization/36181
* tree-parloops.c (loop_has_vector_phi_nodes): New.
(parallelize_loops): Don't parallelize when the loop has vector
phi nodes.
* gcc.dg/tree-ssa/pr36181.c: New.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr36181.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-parloops.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36181
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/36181] Simple for loop generates ICE with -ftree-parallelize-loops=2
2008-05-08 17:04 [Bug tree-optimization/36181] New: Simple for loop generates ICE with -ftree-parallelize-loops=2 runeerle at stud dot ntnu dot no
2008-05-09 9:11 ` [Bug tree-optimization/36181] " rguenth at gcc dot gnu dot org
2008-05-20 19:18 ` spop at gcc dot gnu dot org
@ 2008-05-20 19:24 ` spop at gcc dot gnu dot org
2008-05-21 15:58 ` spop at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: spop at gcc dot gnu dot org @ 2008-05-20 19:24 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from spop at gcc dot gnu dot org 2008-05-20 19:23 -------
Fixed.
--
spop at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36181
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/36181] Simple for loop generates ICE with -ftree-parallelize-loops=2
2008-05-08 17:04 [Bug tree-optimization/36181] New: Simple for loop generates ICE with -ftree-parallelize-loops=2 runeerle at stud dot ntnu dot no
` (2 preceding siblings ...)
2008-05-20 19:24 ` spop at gcc dot gnu dot org
@ 2008-05-21 15:58 ` spop at gcc dot gnu dot org
3 siblings, 0 replies; 5+ messages in thread
From: spop at gcc dot gnu dot org @ 2008-05-21 15:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from spop at gcc dot gnu dot org 2008-05-21 15:57 -------
Subject: Bug 36181
Author: spop
Date: Wed May 21 15:56:57 2008
New Revision: 135722
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135722
Log:
2008-05-15 Sebastian Pop <sebastian.pop@amd.com>
Jan Sjodin <jan.sjodin@amd.com>
PR tree-optimization/36181
Backport from mainline:
* tree-parloops.c (loop_has_vector_phi_nodes): New.
(parallelize_loops): Don't parallelize when the loop has vector
phi nodes.
* gcc.dg/tree-ssa/pr36181.c: New.
Added:
branches/gcc-4_3-branch/gcc/testsuite/gcc.dg/tree-ssa/pr36181.c
Modified:
branches/gcc-4_3-branch/gcc/ChangeLog
branches/gcc-4_3-branch/gcc/testsuite/ChangeLog
branches/gcc-4_3-branch/gcc/tree-parloops.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36181
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2008-05-21 15:58 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2008-05-08 17:04 [Bug tree-optimization/36181] New: Simple for loop generates ICE with -ftree-parallelize-loops=2 runeerle at stud dot ntnu dot no
2008-05-09 9:11 ` [Bug tree-optimization/36181] " rguenth at gcc dot gnu dot org
2008-05-20 19:18 ` spop at gcc dot gnu dot org
2008-05-20 19:24 ` spop at gcc dot gnu dot org
2008-05-21 15:58 ` spop at gcc dot gnu dot org
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