Re: Bug fix for glibc broke freebsd build in REL_11_STABLE
От | Andrew Gierth |
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Тема | Re: Bug fix for glibc broke freebsd build in REL_11_STABLE |
Дата | |
Msg-id | 871sa8vmg0.fsf@news-spur.riddles.org.uk обсуждение исходный текст |
Ответ на | Re: Bug fix for glibc broke freebsd build in REL_11_STABLE (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Bug fix for glibc broke freebsd build in REL_11_STABLE
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Список | pgsql-hackers |
>>>>> "Tom" == Tom Lane <tgl@sss.pgh.pa.us> writes: >> I kinda wonder if we should add -mno-x87 or such in configure when >> we detect clang, obviously it doesn't deal correctly with this. Tom> Seems worth looking into, but what happens if someone tries to Tom> compile for x87 hardware? Or do we care anymore? Already discussed this one on IRC with Andres, but to put this on record for future reference: we can't use -mno-x87 on 32bit intel, even with an -march= option with an SSE2 capable CPU, because the 32-bit ABI requires floats to be returned in the x87 registers and breaking that either results in silently wrong results or in clang dying with "fatal error: error in backend: X87 register return with X87 disabled" or similar. -- Andrew (irc:RhodiumToad)
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