http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50343
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-09-09 22:05:16 UTC --- The same error on 252.eon in SPEC CPU 2K: g++ -c -o ggPlane.o -DSPEC_CPU2000_LP64 -DHAS_ERRLIST -I. -DNDEBUG -O3 -funroll-loops -ffast-math -fwhole-program -flto=jobserver -fuse-linker-plugin ggPlane.cc ggPlane.cc: In member function 'ggPlane::initialize(ggTrain<ggPoint3> const&)': ggPlane.cc:47:6: internal compiler error: tree check: expected ssa_name, have real_cst in vect_recog_dot_prod_pattern, at tree-vect-patterns.c:261 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. specmake[3]: *** [ggPlane.o] Error 1