[Bug driver/47785] GCC with -flto does not pass -Wa/-Xassembler options to the assembler

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47785

--- Comment #17 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Prathamesh Kulkarni
<prathamesh3492@gcc.gnu.org>:

https://gcc.gnu.org/g:f1a681a174cdfb82e62c246d6f4add9a25fc2e43

commit r10-6807-gf1a681a174cdfb82e62c246d6f4add9a25fc2e43
Author: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
Date:   Mon Feb 24 11:55:45 2020 +0530

    PR47785: Add support for handling Xassembler/Wa options with LTO.

    2020-02-24  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
            Kugan Vivekandarajah  <kugan.vivekanandarajah@linaro.org>

        PR driver/47785
        * gcc.c (putenv_COLLECT_AS_OPTIONS): New function.
        (driver::main): Call putenv_COLLECT_AS_OPTIONS.
        * opts-common.c (parse_options_from_collect_gcc_options): New function.
        (prepend_xassembler_to_collect_as_options): Likewise.
        * opts.h (parse_options_from_collect_gcc_options): Declare prototype.
        (prepend_xassembler_to_collect_as_options): Likewise.
        * lto-opts.c (lto_write_options): Stream assembler options
        in COLLECT_AS_OPTIONS.
        * lto-wrapper.c (xassembler_options_error): New static variable.
        (get_options_from_collect_gcc_options): Move parsing options code to
        parse_options_from_collect_gcc_options and call it.
        (merge_and_complain): Validate -Xassembler options.
        (append_compiler_options): Handle OPT_Xassembler.
        (run_gcc): Append command line -Xassembler options to
        collect_gcc_options.
        * doc/invoke.texi: Add documentation about using Xassembler
        options with LTO.

    testsuite/
        * gcc.target/arm/pr78353-1.c: New test.
        * gcc.target/arm/pr78353-2.c: Likewise.