[PATCH, updated] Vtable pointer verification, main gcc changes (patch 2 of 3)

[Caroline Tice]

Ping?

-- Caroline
cmtice@google.com


On Mon, Feb 25, 2013 at 11:27 AM, Caroline Tice <cmtice@google.com> wrote:
> Here are the latest changes to the vtable pointer verification patches
> (again there are 3 patches: c++ front end, main gcc, and c++ runtime
> library).  I think these address all the review comments I have
> received so far.  This patch is the for main gcc.  Please review these
> changes and let me know if they will be ok to commit once stage 1
> opens.
>
> -- Caroline Tice
> cmtice@google.com
>
> 2013-02-25  Caroline Tice  <cmtice@google.com>
>
>         * configure (CXX_FOR_TARGET): Add libstdc++-v3/libsupc++/.libs to the
>         library search path.
>         * ligbcc/config.host (extra_parts):  Add vtv_start.o and vtv_end.o to
>         the list.
>         * libgcc/Makefile.in: Add definitin for gcc_srcdir; add rules for
>         building vtv_start.o and vtv_end.o.
>         * passes.c (init_optimization_pass): Add pass_vtable_verify.
>         * vtv_start.c:  New file.
>         * tree-pass.h (pass_vtable_verify): Declare new pass.
>         * tree-vtable-verify.c:  New file, contains vtable verification tree
>         pass.
>         * tree-vtable-verify.h: New file.
>         * common.opt: (fvtable-verify=): New option. Also define vtv_priority
>         values for the option.
>         * timevar.def (TV_VTABLE_VERIFICATION):  Declare new time var.
>         * config/gnu-user.h: Add vtv_start.o to STARTFILE_SPEC if
>         fvtable-verify is present; Add vtv_end.o to ENDFILE_SPEC if
>         fvtable-verify is present.
>         * tree.h: Add extern function declaration for save_vtable_map_decl.
>         * vtv_end.c:  New file.
>         * flag-types.h (vtv_priority):  New enum, for values for new
>         '-fvtable-verify=' option.
>         * Makefile.in (OBJS):  Add tree-vtable-verify.o to list of object
>         files.
>         (tree-vtable-verify.o):  Add rule for building object file.
>         (GTFILES): Add tree-vtable-verify.c to list of files that use GCC's
>         garbage collector.
>         * varasm.c (assemble_variable): Add code for handling variables that
>         go into the ".vtable_map_vars" section.
>         (assemble_vtv_perinit_initializer):  New function.
>         (default_section_type_flags):  Add SECTION_LINKONCE to
>         ".vtable_map_vars" section items.
>         * output.h (assemble_vtv_preinit_initializer):  External function decl.