[Bug tree-optimization/23546] New: ICE in for_each_index, at tree-ssa-loop-im.c:202

["ma1flfs at bath dot ac dot uk" <gcc-bugzilla at gcc dot gnu dot org>]

When compiling xorg-cvs gcc throws the following ICE in 
programs/Xserver/fb/fbmmx.c  
fbmmx.c: In function 'mmxCombineAddU':  
fbmmx.c:564: internal compiler error: in for_each_index, at  
tree-ssa-loop-im.c:202  
  
gcc (GCC) 4.0.2 20050823 (prerelease)  
  
Configured with: ../gcc-4.0-20050824/configure --prefix=/usr  
--libexecdir=/usr/lib --enable-shared --enable-threads=posix  
--enable-__cxa_atexit --enable-clocale=gnu --enable-languages=c,c++  
  
Condensed command line:  
gcc -c -O2 -march=pentium4 fbmmx.i 
 
Compiling the file without -O2 works. 
  
As the preprocessed file is very long I will attach it to this report instead  
of including it in the comment.

-- 
           Summary: ICE in for_each_index, at tree-ssa-loop-im.c:202
           Product: gcc
           Version: 4.0.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ma1flfs at bath dot ac dot uk
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23546