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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/96383] [8/9/10/11 Regression] Full ABI information
 missing from GCC compiled C
Date: Thu, 30 Jul 2020 12:34:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96383

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 48960
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D48960&action=3Dedit
updated patch

Avoid aliases and thunks, avoid not declared builtins w/o body.  Updates
stats for cc1 to

    FILE SIZE        VM SIZE=20=20=20=20
 --------------  --------------=20
  +1.0% +1.21Mi  [ =3D ]       0    .debug_info
  +4.4% +92.0Ki  [ =3D ]       0    .debug_abbrev
  +0.1% +6.76Ki  [ =3D ]       0    .debug_str
  +0.0% +5.80Ki  [ =3D ]       0    .debug_line
  +0.0%    +426  [ =3D ]       0    .debug_loc
  +0.0%    +144  [ =3D ]       0    .debug_ranges
  +0.0%     +80  +0.0%     +80    .text
  +0.0%     +52  [ =3D ]       0    .strtab
  +0.0%     +32  +0.0%     +32    .rodata
  +0.0%     +24  [ =3D ]       0    .symtab
  +0.0%     +16  +0.0%     +16    .eh_frame
  +0.0%      +8  +0.0%      +8    .eh_frame_hdr
  -1.9%    -138  [ =3D ]       0    [Unmapped]
  +0.4% +1.31Mi  +0.0%    +136    TOTAL

and after applying DWZ to both:

    FILE SIZE        VM SIZE=20=20=20=20
 --------------  --------------=20
  +1.0%  +751Ki  [ =3D ]       0    .debug_info
  +4.8% +87.8Ki  [ =3D ]       0    .debug_abbrev
  +0.1% +6.76Ki  [ =3D ]       0    .debug_str
  +0.0% +5.80Ki  [ =3D ]       0    .debug_line
  +0.0%    +426  [ =3D ]       0    .debug_loc
  +0.0%    +144  [ =3D ]       0    .debug_ranges
  +0.0%     +80  +0.0%     +80    .text
  +0.0%     +52  [ =3D ]       0    .strtab
  +0.0%     +32  +0.0%     +32    .rodata
  +0.0%     +24  [ =3D ]       0    .symtab
  +0.0%     +16  +0.0%     +16    .eh_frame
  +0.0%      +8  +0.0%      +8    .eh_frame_hdr
  -1.9%    -137  [ =3D ]       0    [Unmapped]
  +0.3%  +852Ki  +0.0%    +136    TOTAL=