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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/96729] [11 Regression] slow compile with `-g -O3` since
 r11-39-gf9e1ea10e657af9f
Date: Tue, 25 Aug 2020 19:59:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96729

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 49121
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D49121&action=3Dedit
gcc11-pr96729.patch

Untested fix for the next real insn caching.
$ time ./cc1.vanilla -quiet -g -O3 pr96729.c -dA

real 0m2.756s
user 0m2.728s
sys 0m0.022s
$ time ./cc1 -quiet -g -O3 pr96729.c -dA

real 0m1.040s
user 0m1.018s
sys 0m0.020s

and the generated assembly is identical.  The times are with -O0 built
debugging cc1, so I really can't reproduce spending 60s on that, that would
need extremely slow machine.=