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+2009-08-05 Sriraman Tallam <tmsriram@google.com>
+
+ * icf.cc: New file.
+ * icf.h: New file.
+ * Makefile.am (CCFILES): Add icf.cc.
+ (HFILES): Add icf.h
+ * Makefile.in: Regenerate.
+ * dynobj.h (Sized_dynobj::do_section_entsize): New function.
+ * gc.h (gc_process_relocs): Populate lists used by icf to contain
+ section, symbol and addend information for the relocs.
+ * gold.cc (queue_middle_tasks): Call identical code folding.
+ * gold.h: Add defines for multimap.
+ * layout.cc (Layout::create_symtab_sections): Add symtab as parameter
+ to the call of finalize_local_symbols.
+ * main.cc (main): Create object of class Icf.
+ * object.cc (Sized_relobj::do_layout): Allow this function to be
+ called twice during icf.
+ (Sized_relobj::do_finalize_local_symbols): Fold symbols corresponding
+ to sections marked as identical by icf.
+ (Sized_relobj::do_section_flags): Get section_flags from Symbols_data
+ when available.
+ (Sized_relobj::do_section_entsize): New function.
+ * object.h (Object::section_entsize): New function.
+ (Object::do_section_entsize): New pure virtual function.
+ (Relobj::finalize_local_symbols): Add new parameter.
+ (Relobj::do_section_entsize): New function.
+ * options.h (General_options::icf): New option.
+ (General_options::icf_iterations): New option.
+ (General_options::print_icf_sections): New option.
+ * plugin.cc (Sized_pluginobj::do_section_entsize): New function.
+ * plugin.h (Sized_pluginobj::do_section_entsize): New function.
+ * reloc.cc (Read_relocs::run): Delay scanning relocs when doing
+ icf.
+ * symtab.cc (Symbol_table::is_section_folded): New function.
+ (Symbol_table::sized_finalize_symbol): Fold symbols corresponding
+ to sections marked as identical by icf.
+ * symtab.h (Symbol_table::set_icf): New function.
+ (Symbol_table::icf): New function.
+ (Symbol_table::is_section_folded): New function.
+ (Symbol_table::icf_): New data member.
+ * target-reloc.h (relocate_section): Ignore sections folded by icf.
+ * testsuite/Makefile.am: Add commands to build icf_test.
+ * testsuite/Makefile.in: Regenerate.
+ * testsuite/icf_test.sh: New file.
+ * testsuite/icf_test.cc: New file.
+
2009-07-24 Chris Demetriou <cgd@google.com>
* layout.cc (is_compressible_debug_section): Fix incorrect