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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/23710] gdb is slow and memory hungry consuming debug
 generated with LTO by GCC
Date: Thu, 02 Apr 2020 12:39:27 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D23710

--- Comment #15 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #8)
> (In reply to Tom de Vries from comment #6)
> > (In reply to Richard Biener from comment #0)
> > > "Mirror" of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D87432 wher=
e we try
> > > to improve the GCC side.  Input from gdb folks is needed here.
> > >=20
> > > gdb takes ~10s to process a LTO bootstrapped cc1 binary and another t=
wo
> > > seconds
> > > when setting the first breakpoint.  It also has allocated 1.6GB memor=
y at
> > > that point (compared to ~200MB for a non-LTO binary).
> >=20
> > The proposed patch at
> > https://sourceware.org/ml/gdb-patches/2020-02/msg00974.html allows a sp=
eedup
> > when manually specifying the source language before loading, which take=
s 17%
> > off the execution time of loading and setting the first breakpoint.
>=20
> That patch has been accepted.
>=20
> I've submitted a RFC patch that automates this workaround:
> https://sourceware.org/ml/gdb-patches/2020-03/msg00009.html .

Committed:
https://sourceware.org/git/?p=3Dbinutils-gdb.git;a=3Dcommit;h=3Dd3214198119=
c1a2f9a6a2b8fcc56d8c324e1a245

--=20
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