From: Dongjiu Geng <gengdongjiu1@gmail.com>
To: gcc@gcc.gnu.org
Subject: what is the difference with and without crc extension support
Date: Thu, 3 Mar 2022 21:41:45 +0800 [thread overview]
Message-ID: <CABSBigQ5vBkj-CtQuDMfCVmYxVQ9est_2LXMZ8Heu5Y1Cixd+g@mail.gmail.com> (raw)
Hi,
My program does not use CRC instructions,but I find the compiled
binary has much difference between using "-march=armv8-a+crc" and
using "-march=armv8-a". Even stranger, when I use
"-march=armv8-a+crc", I find my compiled binary can not run. but when
I change -O2 to -O0 based on "-march=armv8-a+crc", it can run. I do
not know what is the reason.. can you answer it? Thanks.
next reply other threads:[~2022-03-03 13:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-03 13:41 Dongjiu Geng [this message]
2022-03-03 13:48 ` Martin Liška
2022-03-03 13:52 ` Dongjiu Geng
2022-03-04 13:05 ` Martin Liška
2022-03-04 18:20 ` Richard Earnshaw
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