ChangeLog:
* configure.ac (--enable-lto): Add x86_64-apple-darwin* as
a platform that supports LTO.
* configure: Regenerate.
gcc/ChangeLog:
* config.gcc (i[34567]86-*-darwin*, x86_64-*-darwin*): Add
lto-macho as lto_binary_reader.
* target.h (struct gcc_target): New hooks lto_start and lto_end.
* target-def.h (TARGET_ASM_LTO_START, TARGET_ASM_LTO_END): Define.
* cgraphunit.c (ipa_passes): Wrap LTO assembler output generation
in lto_start and lto_end calls.
(is_elf_or_coff): Rename to maybe_lto_object_file. Add Mach-O
magic numbers.
(scan_prog_file): Update is_elf_or_coff call.
* doc/tm.text (TARGET_ASM_LTO_START, TARGET_ASM_LTO_END): Document.
* collect2.c (main): Fix enum comparison.
* config/darwin-protos.h (darwin_asm_lto_start, darwin_asm_lto_end):
Add prototypes.
* darwin9.h (LINK_COMMAND_SPEC): Pass -flto and -fwhopr to the linker.
* darwin.h (LINK_COMMAND_SPEC): Likewise. Define TARGET_ASM_LTO_START
and TARGET_ASM_LTO_END.
* darwin.c: Include obstack.h and lto-streamer.h.
(lto_section_names_offset, lto_section_names_obstack,
lto_asm_out_file, lto_asm_out_name, saved_asm_out_file): New static
global variables.
(LTO_SEGMENT_NAME, LTO_NAMES_SECTION): New defines.
(darwin_asm_lto_start): New function. Redirect output to asm_out_file
to a temporary file.
(darwin_asm_lto_end): New function. Restore asm_out_file.
(darwin_asm_named_section): For LTO sections, replace the name with
the offset of the section name in a string table, and build this
table.
(darwin_file_start): Initialize global vars for LTO support.
(darwin_file_end): If output to asm_out_file was redirected, append it
to the proper asm_out_file here. Add the section names section.
lto/ChangeLog:
* lto.h (struct lto_file_struct): Document offset member.
* lto-endian.h: New file.
* lto-macho.h: New file.
* lto-macho.c: New file.
* Make-lang.in: Add rule for lto-macho.o.
From-SVN: r159173
Steven Bosscher