[Bug debug/112768] btf: fix asm comment output for BTF_KIND_FUNC* kinds

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112768

--- Comment #1 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Indu Bhagat <ibhagat@gcc.gnu.org>:

https://gcc.gnu.org/g:9b6e2cb7e61ebb7006a89fa75869ec1a3e0a6e33

commit r14-6111-g9b6e2cb7e61ebb7006a89fa75869ec1a3e0a6e33
Author: Indu Bhagat <indu.bhagat@oracle.com>
Date:   Mon Dec 4 01:57:25 2023 -0800

    BTF: fix PR debug/112768

    PR debug/112768 - btf: fix asm comment output for BTF_KIND_FUNC* kinds

    The patch adds a small function to abstract out the detail and return
    the name of the type.  The patch also fixes the issue of BTF_KIND_FUNC
    appearing in the comments with a 'null' string.

    For btf-function-6.c testcase, after the patch:

            .long   0       # TYPE 2 BTF_KIND_FUNC_PROTO ''
            .long   0xd000002       # btt_info: kind=13, kflag=0, vlen=2
            .long   0x1     # btt_type: (BTF_KIND_INT 'int')
            .long   0       # farg_name
            .long   0x1     # farg_type: (BTF_KIND_INT 'int')
            .long   0       # farg_name
            .long   0x1     # farg_type: (BTF_KIND_INT 'int')
            .long   0       # TYPE 3 BTF_KIND_FUNC_PROTO ''
            .long   0xd000001       # btt_info: kind=13, kflag=0, vlen=1
            .long   0x1     # btt_type: (BTF_KIND_INT 'int')
            .long   0x68    # farg_name
            .long   0x1     # farg_type: (BTF_KIND_INT 'int')
            .long   0x5     # TYPE 4 BTF_KIND_FUNC 'extfunc'
            .long   0xc000002       # btt_info: kind=12, kflag=0, linkage=2
            .long   0x2     # btt_type: (BTF_KIND_FUNC_PROTO '')
            .long   0xd     # TYPE 5 BTF_KIND_FUNC 'foo'
            .long   0xc000001       # btt_info: kind=12, kflag=0, linkage=1
            .long   0x3     # btt_type: (BTF_KIND_FUNC_PROTO '')

    gcc/ChangeLog:

            PR debug/112768
            * btfout.cc (get_btf_type_name): New definition.
            (btf_collect_datasec): Update dtd_name to the original type name
            string.
            (btf_asm_type_ref): Use the new get_btf_type_name function
            instead.
            (btf_asm_type): Likewise.
            (btf_asm_func_type): Likewise.

    gcc/testsuite/ChangeLog:

            PR debug/112768
            * gcc.dg/debug/btf/btf-function-6.c: Empty string expected with
            BTF_KIND_FUNC_PROTO.