[Bug middle-end/50333] New: internal compiler error: in extract_ops_from_tree, at gimple.h:1909

[gmaxwell at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50333

             Bug #: 50333
           Summary: internal compiler error: in extract_ops_from_tree, at
                    gimple.h:1909
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: gmaxwell@gmail.com


Created attachment 25230
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25230
trigger case

Compiling libopus
http://git.xiph.org/?p=opus.git;a=snapshot;h=f329fa6f0f1e08506a210608bc6de34b5949ec6b;sf=tgz

libcelt/cwrs.c: In function 'encode_pulses':
libcelt/cwrs.c:589:6: internal compiler error: in extract_ops_from_tree, at
gimple.h:1909

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/gmaxwell/gcc/libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ./configure --enable-lto --prefix=/home/gmaxwell/gcc/
--enable-cloog-backend=isl --disable-java --disable-libgcj --enable-lipo
--enable-graphite --enable-languages=c --disable-bootstrap
--enable-stage1-languages=c --disable-libstdcxx-v3
Thread model: posix
gcc version 4.7.0 20110908 (experimental) (GCC) 

CFLAGS='-O2 -ftree-vectorize' ; make

(-O3 fails too, -O2 + -ftree-vectorize seems to me the minimal failure case)

Preprocessed file attached.