optimization/6856: -O2 options causes Internal compiler error on hpux11.00

[corrado.giacomini@trema.com]

>Number:         6856
>Category:       optimization
>Synopsis:       -O2 options causes Internal compiler error on hpux11.00
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 29 05:06:03 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Corrado Giacomini
>Release:        gcc version 3.1.1 20020517 (prerelease)
>Organization:
>Environment:
hppa2.0w-hp-hpux11.00
>Description:
In compiling the test.cc file using optimization options
I have the following error message, while compile properly if I take off the -O2 options.

The same code compile well in both cases on linux and 
on hpux as well using KCC compiler.

g++ -c -O2 test.cc
test.cc: In function `void __static_initialization_and_destruction_0(int,
   int)':
test.cc:16: Internal compiler error in simplify_gen_subreg, at simplify-rtx.c:
   2711
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>How-To-Repeat:
Compile the attached test file using the following options:
g++ -c -O2  test.c
>Fix:

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