>-----Original Message----- >From: YunQiang Su [mailto:[email protected]] >Sent: Tuesday, February 11, 2020 6:48 PM >To: Shiyou Yin >Cc: [email protected] >Subject: Re: [Pixman] [PATCH 2/3] build: use '-mloongson-mmi' for Loongson MMI. > >Shiyou Yin <[email protected]> 于2020年2月11日周二 下午6:29写道： >> >> >> >-----Original Message----- >> >From: YunQiang Su [mailto:[email protected]] >> >Sent: Tuesday, February 11, 2020 5:26 PM >> >To: Yin Shiyou >> >Cc: [email protected] >> >Subject: Re: [Pixman] [PATCH 2/3] build: use '-mloongson-mmi' for Loongson >> >MMI. >> > >> >Yin Shiyou <[email protected]> 于2020年2月11日周二 下午3:59写道： >> >> >> >> It's suggested to use '-mloongson-mmi' to enable MMI. >> >> Use '-march=loongson2f' will lead a link error in new platform >> >> while config check and then MMI will be disabled. >> >> --- >> >> configure.ac | 2 +- >> >> meson.build | 2 +- >> >> 2 files changed, 2 insertions(+), 2 deletions(-) >> >> >> >> diff --git a/configure.ac b/configure.ac >> >> index 1ca3974..fd7df47 100644 >> >> --- a/configure.ac >> >> +++ b/configure.ac >> >> @@ -273,7 +273,7 @@ dnl >> >=========================================================================== >> >> dnl Check for Loongson Multimedia Instructions >> >> >> >> if test "x$LS_CFLAGS" = "x" ; then >> >> - LS_CFLAGS="-march=loongson2f" >> >> + LS_CFLAGS="-mloongson-mmi" >> >> fi >> >> > >somebody told me that the opcode of MMI on 2F and 3A is different. >So which set of opcode will -mloongson-mmi generate? > >> > >> >As I know, somebody are still using 2F, such as Gentoo. >> >This change will break these distributions. >> > >> >Keep compatible please. >> > >> Thank you for you reminder. Are you sure this patch will cause break on 2F? >> In my opinion, use these FLAGS is aim to compile MMI instructions. >> From this point, '-mloongson-mmi' may be more appropriate.. >> >> > Okay, will keep compatible and update the patch.
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