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On 17 Apr 2003, Arjan van de Ven wrote: > > it can do that ANYWAY for all kinds of things. > We really should ask the gcc folks to add a > -fdontyoudareusefloatingpoint flag (well different name probably) Well, _most_ architectures actually have that flag already. It's not called -fdontyoudareusefloatingpoint on any of them, though ;) It's most commonly called "-mno-fpu", but sh calls it "-mno-implicit-fp", and alpha calls it "-mno-fp-regs". On x86, gcc doesn't have such an option, although "-mno-sse" and "-mno-sse2" probably come closest (and we should probably use them, but since older gcc's don't know about it and it hasn't been an issue yet we haven't). HOWEVER, that doesn't fix the memcpy() issue. The fact is, the kernel _can_ and does use SSE instructions - it's just that it has to do magic crap before it does so. Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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