nanogui: How to get the smallest code size with mipsel-linux-gcc
Subject:
Re: How to get the smallest code size with mipsel-linux-gcc
From:
Alex Holden ####@####.####
Date:
22 Feb 2001 20:03:34 -0000
Message-Id: <Pine.LNX.4.04.10102222001480.627-100000@hyperspace.linuxhacker.org>
On Thu, 22 Feb 2001, Robert Hartley wrote:
> mipsel-linux-gcc -c -ansi -pedantic -O6 -fno-strength-reduce somefile.c
> Is there some other option I can use to shrink it more?
-O3 (and greater) enables automatic loop unrolling, which can increase the
code size quite a bit. Try -O2 or -Os instead. I've found experimentally
that on x86 -O2 is probably the best compromise of speed and code size,
whilst -Os is slightly smaller and quite a bit slower. I would guess
the Mips GCC probably behaves similarly.
--
------- Alex Holden -------
http://www.linuxhacker.org/
http://www.robogeeks.org/
