http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50183
--- Comment #4 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2011-08-25 21:02:02 UTC --- Here's the backtrace from the failure. (gdb) bt #0 internal_error (gmsgid=0x10e73c80 "verify_ssa failed") at /home/wschmidt/gcc/gcc-4_6-branch/gcc/diagnostic.c:838 #1 0x000000001071b964 in verify_ssa (check_modified_stmt=<value optimized out>) at /home/wschmidt/gcc/gcc-4_6-branch/gcc/tree-ssa.c:1119 #2 0x00000000106b44e4 in verify_loop_closed_ssa (verify_ssa_p=<value optimized out>) at /home/wschmidt/gcc/gcc-4_6-branch/gcc/tree-ssa-loop-manip.c:456 #3 0x0000000010a56adc in rewrite_commutative_reductions_out_of_ssa (scop=0x116311a0) at /home/wschmidt/gcc/gcc-4_6-branch/gcc/graphite-sese-to-poly.c:3218 #4 build_poly_scop (scop=0x116311a0) at /home/wschmidt/gcc/gcc-4_6-branch/gcc/graphite-sese-to-poly.c:3281 #5 0x0000000010a39110 in graphite_transform_loops () at /home/wschmidt/gcc/gcc-4_6-branch/gcc/graphite.c:272 #6 0x00000000106bf3d8 in graphite_transforms () at /home/wschmidt/gcc/gcc-4_6-branch/gcc/tree-ssa-loop.c:256 #7 0x00000000104dddf8 in execute_one_pass (pass=0x11132640) at /home/wschmidt/gcc/gcc-4_6-branch/gcc/passes.c:1556
