[Bug target/48108] lto should be containerized in a single mach-o section on darwin

[iains at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48108

--- Comment #23 from Iain Sandoe <iains at gcc dot gnu.org> 2011-11-13 13:58:47 UTC ---
Author: iains
Date: Sun Nov 13 13:58:43 2011
New Revision: 181336

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181336
Log:

gcc:

    PR target/48108
    Backport from mainline r180523
    * config/darwin.c (top level): Amend comments concerning LTO output.
    (lto_section_num): New variable.  (darwin_lto_section_e): New GTY.
    (LTO_SECTS_SECTION, LTO_INDEX_SECTION): New.
    (LTO_NAMES_SECTION): Rename.
    (darwin_asm_named_section): Record LTO section counts and switches
    in a vec of darwin_lto_section_e.
    (darwin_file_start): Remove unused code.
    (darwin_file_end): Put an LTO section termination label.  Handle
    output of the wrapped LTO sections, index and names table.

libiberty:

    PR target/48108
    Backport from mainline r180523
    * simple-object-mach-o.c  (GNU_WRAPPER_SECTS, GNU_WRAPPER_INDEX,
    GNU_WRAPPER_NAMES): New macros.
    (simple_object_mach_o_segment): Handle wrapper scheme.
    (simple_object_mach_o_write_section_header): Allow the segment name
    to be supplied.
    (simple_object_mach_o_write_segment): Handle wrapper scheme.  Ensure
    that the top-level segment name in the load command is empty.
    (simple_object_mach_o_write_to_file): Determine the number of
    sections during segment output, use that in writing the header.


Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/config/darwin.c
    branches/gcc-4_6-branch/libiberty/ChangeLog
    branches/gcc-4_6-branch/libiberty/simple-object-mach-o.c