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* Re: c/7277: Casting integers to vector types causes internal compiler error
@ 2002-07-11 8:36 Andrew Pinski
0 siblings, 0 replies; 5+ messages in thread
From: Andrew Pinski @ 2002-07-11 8:36 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR c/7277; it has been noted by GNATS.
From: Andrew Pinski <pinskia@physics.uc.edu>
To: Haakon Riiser <haakon.riiser@fys.uio.no>
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/7277: Casting integers to vector types causes internal compiler error
Date: Thu, 11 Jul 2002 11:34:50 -0400
I did not see the option, -mmmx, before sorry.
Yes it is still causes an ice.
Thanks,
Andrew Pinski
On Thursday, July 11, 2002, at 11:31 , Haakon Riiser wrote:
> -mmmx
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: c/7277: Casting integers to vector types causes internal compiler error
@ 2003-04-02 5:16 Andrew Pinski
0 siblings, 0 replies; 5+ messages in thread
From: Andrew Pinski @ 2003-04-02 5:16 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR c/7277; it has been noted by GNATS.
From: Andrew Pinski <pinskia@physics.uc.edu>
To: gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org,
gcc-prs@gcc.gnu.org, hakonrk@fys.uio.no
Cc: Andrew Pinski <pinskia@physics.uc.edu>
Subject: Re: c/7277: Casting integers to vector types causes internal compiler error
Date: Wed, 2 Apr 2003 00:12:43 -0500
Still fails on the mainline:
===========================
Starting program:
/home/gates/pinskia/linux/lib/gcc-lib/i686-pc-linux-gnu/3.4/cc1 -quiet
-v cast.c -quiet -dumpbase cast.c -mmmx -auxbase cast -version -o
/tmp/ccejuWIv.s
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/home/gates/pinskia/linux/include
/home/gates/pinskia/linux/lib/gcc-lib/i686-pc-linux-gnu/3.4/include
/home/gates/pinskia/linux/i686-pc-linux-gnu/include
/usr/include
End of search list.
GNU C version 3.4 20030401 (experimental) (i686-pc-linux-gnu)
compiled by GNU C version 3.4 20030401 (experimental).
GGC heuristics: --param ggc-min-expand=98 --param
ggc-min-heapsize=128866
cast.c: In function `null':
cast.c:6: internal compiler error: in output_constant_pool, at
varasm.c:3457
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
==========================
a little more information:
x at this point is a CONST_INT, not a CONST_VECTOR which is what is
expecting.
Thanks,
Andrew Pinski
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-
trail&database=gcc&pr=7277
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: c/7277: Casting integers to vector types causes internal compiler error
@ 2002-07-11 8:36 Haakon Riiser
0 siblings, 0 replies; 5+ messages in thread
From: Haakon Riiser @ 2002-07-11 8:36 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR c/7277; it has been noted by GNATS.
From: Haakon Riiser <haakon.riiser@fys.uio.no>
To: Andrew Pinski <pinskia@physics.uc.edu>
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/7277: Casting integers to vector types causes internal compiler error
Date: Thu, 11 Jul 2002 17:31:45 +0200
[Andrew Pinski]
>> # 1 "cast.c"
>> typedef int v8qi __attribute__ ((mode(V8QI)));
>>
>> v8qi null(void)
>> {
>> return (v8qi) 0LL;
>> }
> This has been fixed in: gcc version 3.2 20020709 (experimental)
Really? From gcc version 3.2 20020711 (experimental):
##############################################################################
$ gcc -v -c -mmmx cast.c
Reading specs from /mn/rom/u7/hakonrk/i386/gcc-cvs/lib/gcc-lib/i686-pc-linux-gnu/3.2/specs
Configured with: /mn/rom/u7/hakonrk/local/susy/src/gcc-cvs/gcc/configure --prefix=/mn/rom/u7/hakonrk/i386/gcc-cvs --enable-languages=c --disable-nls
Thread model: single
gcc version 3.2 20020711 (experimental)
/mn/rom/u7/hakonrk/i386/gcc-cvs/lib/gcc-lib/i686-pc-linux-gnu/3.2/cc1 -quiet -v -D__GNUC__=3 -D__GNUC_MINOR__=2 -D__GNUC_PATCHLEVEL__=0 cast.c -quiet -dumpbase cast.c -mmmx -version -o /tmp/ccJDF0nv.s
GNU C version 3.2 20020711 (experimental) (i686-pc-linux-gnu)
compiled by GNU C version 3.2 20020711 (experimental).
ignoring nonexistent directory "/mn/rom/u7/hakonrk/i386/gcc-cvs/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/mn/rom/u7/hakonrk/i386/gcc-cvs/include
/mn/rom/u7/hakonrk/i386/gcc-cvs/lib/gcc-lib/i686-pc-linux-gnu/3.2/include
/usr/include
End of search list.
cast.c: In function `null':
cast.c:6: internal compiler error: Internal compiler error in output_constant_pool, at varasm.c:3465
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
##############################################################################
Same thing, except that the line number in varasm.c has changed from
4064 to 3465.
--
Haakon
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: c/7277: Casting integers to vector types causes internal compiler error
@ 2002-07-11 7:16 Andrew Pinski
0 siblings, 0 replies; 5+ messages in thread
From: Andrew Pinski @ 2002-07-11 7:16 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR c/7277; it has been noted by GNATS.
From: Andrew Pinski <pinskia@physics.uc.edu>
To: hakonrk@fys.uio.no
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/7277: Casting integers to vector types causes internal compiler error
Date: Thu, 11 Jul 2002 10:12:27 -0400
This has been fixed in: gcc version 3.2 20020709 (experimental)
Thanks,
Andrew Pinski
On Thursday, July 11, 2002, at 10:01 , hakonrk@fys.uio.no wrote:
> typedef int v8qi __attribute__ ((mode(V8QI)));
>
> v8qi null(void)
> {
> return (v8qi) 0LL;
> }
^ permalink raw reply [flat|nested] 5+ messages in thread
* c/7277: Casting integers to vector types causes internal compiler error
@ 2002-07-11 7:06 hakonrk
0 siblings, 0 replies; 5+ messages in thread
From: hakonrk @ 2002-07-11 7:06 UTC (permalink / raw)
To: gcc-gnats
>Number: 7277
>Category: c
>Synopsis: Casting integers to vector types causes internal compiler error
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Thu Jul 11 07:06:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: Haakon Riiser
>Release: 3.1
>Organization:
University of Oslo
>Environment:
System: Linux s 2.4.18 #2 Thu Jun 6 00:23:32 CEST 2002 i686 unknown
Distribution: Slackware 8.1
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: /local/build/gcc/gcc-3.1/configure --prefix=/usr/local/gcc-3.1 --enable-languages=c --disable-nls
>Description:
Casting integers into vector types (of the same size) causes
internal compiler errors. The following illustrates what happens
when casting from a constant integer (code shown in How-To-Repeat):
##############################################################################
$ gcc -v -c -mmmx cast.c
Reading specs from /usr/local/gcc-3.1/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
Configured with: /local/build/gcc/gcc-3.1/configure --prefix=/usr/local/gcc-3.1 --enable-languages=c --disable-nls
Thread model: single
gcc version 3.1
/usr/local/gcc-3.1/lib/gcc-lib/i686-pc-linux-gnu/3.1/cc1 -lang-c -v -D__GNUC__=3 -D__GNUC_MINOR__=1 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -D__gnu_linux__ -Dlinux -D__ELF__ -D__unix__ -D__gnu_linux__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i686__ -D__tune_pentiumpro__ cast.c -quiet -dumpbase cast.c -mmmx -version -o /tmp/cc2ubmWE.s
GNU CPP version 3.1 (cpplib) (i386 Linux/ELF)
GNU C version 3.1 (i686-pc-linux-gnu)
compiled by GNU C version 3.1.
ignoring nonexistent directory "/usr/local/gcc-3.1/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/local/gcc-3.1/include
/usr/local/gcc-3.1/lib/gcc-lib/i686-pc-linux-gnu/3.1/include
/usr/include
End of search list.
cast.c: In function `null':
cast.c:6: Internal compiler error in output_constant_pool, at varasm.c:4064
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
##############################################################################
When casting from a non-volatile variable, a new ICE appears if
and only if optimization is enabled:
Internal compiler error in subst, at combine.c:3546
This ICE will also manifest itself if one tries to trick the
compiler by using a union of "long long" and "v8qi", assigning
to the "long long" variable and returning the "v8qi" variable.
Again, the ICE only appears when optimization is enabled.
>How-To-Repeat:
# 1 "cast.c"
typedef int v8qi __attribute__ ((mode(V8QI)));
v8qi null(void)
{
return (v8qi) 0LL;
}
>Fix:
Work-around: Use a volatile temporary variable:
/****************************************************************************/
typedef int v8qi __attribute__ ((mode(V8QI)));
v8qi null(void)
{
volatile long long tmp = 0LL;
return (v8qi) tmp;
}
/****************************************************************************/
>Release-Note:
>Audit-Trail:
>Unformatted:
^ permalink raw reply [flat|nested] 5+ messages in thread
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2002-07-11 8:36 c/7277: Casting integers to vector types causes internal compiler error Andrew Pinski
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2003-04-02 5:16 Andrew Pinski
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2002-07-11 7:06 hakonrk
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