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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/110167] excessive compile time when optimizing
 std::to_array
Date: Thu, 08 Jun 2023 10:22:49 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110167

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #2)
> The "obvious" alternative impl using a lambda expression is even slower:

Actually for GCC 13 it's faster:

$ time ~/gcc/13/bin/g++ 110167.cc -c -O3=20

real    0m9.422s
user    0m9.232s
sys     0m0.170s

$ time ~/gcc/13/bin/g++ 110167.cc -c -O3  -DUSE_LAMBDA

real    0m6.403s
user    0m6.342s
sys     0m0.048s

So that's nice.=