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"Duncan" <1i5t5.duncan@×××.net> posted efqqvt$sqh$6@×××××××××.org, |
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excerpted below, on Mon, 02 Oct 2006 10:51:41 +0000: |
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> -ftree-vectorize just came up on the gentoo-dev list. |
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|
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... And here's something from Flame-eyes (and Donnie) on x86 (and PPC) and |
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amd64 specifically... |
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|
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< quote from Flame-eyes > |
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On Sunday 01 October 2006 18:49, Donnie Berkholz wrote: |
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> I can't give you reasons, but I can tell you it totally broke my x86 |
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> system a while back. |
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-ftree-vectorize on x86 and PowerPC is known to create broken executables |
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(when it comes to actually create the executable). I'm using it on AMD64 |
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fine since 4.0 pre-releases though (suggested for the daredevils by |
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Halcy0n iirc), and never had problems with it. Most likely this is due |
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either to the usual limitations of x86 (registers, PIC, 387 fpmath), or to |
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not be able to ensure the availability of extra instructions on x86. |
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</quote> |
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-- |
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Duncan - List replies preferred. No HTML msgs. |
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"Every nonfree program has a lord, a master -- |
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and if you use the program, he is your master." Richard Stallman |
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-- |
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gentoo-amd64@g.o mailing list |
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