This ICE happens during compilation of PovRay-3.6.1 with -msse2 -ftree-vectorize (also on x86_64). The ICE is in express.cpp.
The reduced testcase is attached, this is the failure with -O -ftree-vectorize: g++ -O -ftree-vectorize -m32 -msse2 reduced.cpp reduced.cpp: In function void pov::Parse_Num_Factor(double*, int*): reduced.cpp:94: internal compiler error: tree check: expected ssa_name, have struct_field_tag in verify_ssa, at tree-ssa.c:776 Please submit a full bug report, [etc] The same failure happens with g++ -O -ftree-vectorize on x86_64. -- Summary: ICE: tree check: expected ssa_name, have struct_field_tag in verify_ssa, at tree-ssa.c:776 Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: uros at kss-loka dot si GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27474