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This patch implements the '--discard-locals' option and an alias of it '-X' which cause temporary local symbols to be dropped in output. The options are intended to match the behaviour of the same options in GNU ld. Some of the code was converted to C++ from C code in GNU ld and libbfd. This patch was tested on x86_64-unknow-linux-gnu and passed all gold tests, including a new one in the patch. -Doug 2009-06-04 Doug Kwan <dougkwan@google.com> * i386.cc (class Target_i386): Define new virtual method to override do_is_local_label_name in parent. * object.cc (Sized_relobj::do_count_local_symbols): Discard local symbols if --discard-locals or -X is given. * options.h (class General_options): Declare new options '--discard-locals' and '-X' for discarding locals. * target.h (class Target): Define new methods is_local_label_name and do_is_local_label_name. * testsuite/Makefile.am (check_PROGRAMS): Add discard_locals_test. (check_SCRIPTS): Add discard_locals_test.sh. (check_DATA): Add discard_local_tests.syms. (discard_locals_test_SOURCES, discard_locals_test_LDFLAGS): Define. (discard_local_tests.syms, discard_locals_test.o): New make rules. * testsuite/Makefile.in: Regenerate. * testsuite/discard_locals_test.c: New file. * testsuite/discard_locals_test.sh: Same.
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