target/9090: arm ICE with >= -O2; regression from 2.95

[Matthias Klose]

>Number:         9090
>Category:       target
>Synopsis:       arm ICE with >= -O2; regression from 2.95
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Sun Dec 29 07:36:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     James Troup <james@nocrew.org>
>Release:        3.2.1 (Debian) (Debian unstable)
>Organization:
The Debian Project
>Environment:
System: Debian GNU/Linux (unstable)
Architecture: arm
host: arm-linux
Configured with: /home/packages/gcc/3.2/gcc-3.2-3.2.1ds5/src/configure -v --enable-languages=c,c++,java,f77,proto,objc --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-gxx-include-dir=/usr/include/c++/3.2 --enable-shared --with-system-zlib --enable-nls --without-included-gettext --enable-__cxa_atexit --enable-clocale=gnu --enable-java-gc=boehm --enable-objc-gc arm-linux
>Description:
[ Reported to the Debian BTS as report #168086.
  Please CC 168086@bugs.debian.org on replies.
  Log of report can be found at http://bugs.debian.org/168086 ]

The attached testcase ICEs on arm-linux with 3.2 branch 20021212 (-O2 
only, not -O). As the 3.3 branch doesn't bootstrap, I cannot check with 3.3. 
g++-2.95 did work ok, so this is a regression. 
 
$ gcc-3.2  -O2 -c bug-168086-3.2.ii  
GLinkGLvar/FGLvarHigh.C: In member function `virtual void  
   FGLvarHigh::xIdentify(short int)': 
GLinkGLvar/FGLvarHigh.C:736: Internal compiler error in elimination_effects, at   reload1.c:2837 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions. 
 
$ gcc-3.2  -O -c bug-168086-3.2.ii  
$ 

>How-To-Repeat:
	
>Fix:
	
>Release-Note:
>Audit-Trail:
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