[Bug middle-end/34317] New: [4.3 Regression] -fno-tree-store-copy-prop causes an ICE

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

a small empty file will reproduce this bug.
Invoke cc1 with -fno-tree-store-copy-prop and you get an ICE:
cc1: internal compiler error: in common_handle_option, at opts.c:1786
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Obviously caused by:
r129734 | rguenth | 2007-10-29 14:16:45 -0700 (Mon, 29 Oct 2007) | 25 lines

2007-10-29  Richard Guenther  <rguenther@suse.de>

        * passes.c (init_optimization_passes): Exchange store_copy_prop
        with copy_prop.
        * tree-pass.h (pass_store_copy_prop): Remove.
        * tree-ssa-copy.c (do_store_copy_prop): Remove.
        (stmt_may_generate-copy): Do not handle store_copy_prop.
        (get_copy_of_val): Likewise.
        (set_copy_of_val): Likewise.
        (copy_prop_visit_assignment): Likewise.
        (copy_prop_visit_stmt): Likewise.
        (copy_prop_visit_phi_node): Likewise.
        (init_copy_prop): Likewise.
        (execute_copy_prop): Likewise.
        (do_copy_prop): Remove.
        (gate_store_copy_prop): Likewise.
        (store_copy_prop): Likewise.
        (pass_store_copy_prop): Likewise.
        (pass_copy_prop): Call execute_copy_prop.
        * opts.c (decode_options): Do not set flag_tree_store_copy_prop.
        * common.opt (ftree-store-copy-prop): Mark obsolete.
        * doc/invoke.texi (ftree-store-copy-prop): Remove documentation.


-- 
           Summary: [4.3 Regression] -fno-tree-store-copy-prop causes an ICE
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34317