[Bug middle-end/50398] New: ICE when compiling openssl-1.0.0d with graphite optimizations

[matt at use dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50398

             Bug #: 50398
           Summary: ICE when compiling openssl-1.0.0d with graphite
                    optimizations
    Classification: Unclassified
           Product: gcc
           Version: 4.6.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: matt@use.net


Created attachment 25276
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25276
pre-processed source of the file that triggers the ICE

During compile of openssl-1.0.0d using trunk r177733.

matt@matt-desktop:~/openssl-1.0.0d/engines/ccgost$
/usr/lib/gcc-snapshot/bin/gcc -I../../include -DZLIB -DOPENSSL_THREADS
-D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -m64 -DL_ENDIAN -DTERMIO -O2 
-floop-flatten -Wa,--noexecstack -g -Wall -DMD32_REG_T=int -DOPENSSL_IA32_SSE2
-DOPENSSL_BN_ASM_MONT -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DMD5_ASM -DAES_ASM
-DWHIRLPOOL_ASM   -c gosthash.c
gosthash.c: In function 'hash_step':
gosthash.c:87:12: internal compiler error: in psct_dynamic_dim, at
graphite-poly.h:659

The crash goes away with "-O1 -floop-flatten", or if I remove -floop-flatten.
valgrind doesn't provide any output related to this issue.

Pre-processed source attached.