From mboxrd@z Thu Jan  1 00:00:00 1970
From: harinath@cs.umn.edu
To: gcc-gnats@gcc.gnu.org
Subject: c/3835: ICE in eliminate_regs, at reload1.c:2584 -- gcc version 3.1 20010724 (experimental)
Date: Thu, 26 Jul 2001 16:56:00 -0000
Message-id: <20010726234759.3682.qmail@sourceware.cygnus.com>
X-SW-Source: 2001-07/msg00724.html
List-Id: <gcc-prs.sourceware.org>

>Number:         3835
>Category:       c
>Synopsis:       ICE in eliminate_regs, at reload1.c:2584 -- gcc version 3.1 20010724 (experimental)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 26 16:56:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     harinath@cs.umn.edu
>Release:        gcc version 3.1 20010724 (experimental)
>Organization:
>Environment:
i686-pc-linux-gnu
>Description:
The following is a heavily distilled testcase for a ICE in eliminate_regs.

The testcase uses an 'asm' statement, but I believe it is machine 
independent.  The asm body proper is empty, and the only constraints
used are 'r' and 'm'.
--------------------------------------------------
// test.c

extern void foo (void);
int bar ()
{
  char code = 0;
  for (;;)
    {
      asm ("" : : "r" (0));
      if (code < 0)
	foo ();
      if (({ char res; asm ("" : "=r" (res) : "r" (0), "m" (code)); res; }))
	foo ();
    }
}
>How-To-Repeat:
han ~/z/z > gcc -c -O2 -Wall test.c
test.c: In function `bar':
test.c:15: Internal compiler error in eliminate_regs, at reload1.c:2584
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.
han ~/z/z > gcc -v
Reading specs from /home/grad04/harinath/linux/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
Configured with: ../../configure --prefix=/home/grad04/harinath --exec-prefix=/home/grad04/harinath/linux --enable-threads=posix --enable-shared --enable-languages=c,c++,f77,objc,java --enable-java-awt=xlib
Thread model: posix
gcc version 3.1 20010724 (experimental)
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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