Dnia 2015-01-18, o godz. 15:15:22 Matt Turner <matts...@gentoo.org> napisał(a):
> On Sun, Jan 18, 2015 at 12:44 PM, Michał Górny <mgo...@gentoo.org> wrote: > > Hello, > > > > I would like to commit the following flags as cpu_flags_x86_desc. > > The list combines global USE flags with some local USE flags I've been > > able to find. > > > > > > 3dnow - Use the 3DNow! instruction set > > 3dnowext - Use the Enhanced 3DNow! instruction set > > aes-ni - Enable support for Intel's AES instruction set (aes in cpuinfo) > > avx - Adds support for Advanced Vector Extensions instructions > > avx2 - Adds support for Advanced Vector Extensions 2 instructions > > fma - Use the Fused Multiply Add instruction set > > There are fma3 and fma4 instruction sets. We need to determine which > one the packages that have this flag are actually using and name the > flag appropriately. Ok then: fma3 - Use the Fused Multiply Add v3 instruction set fma4 - Use the Fused Multiply Add v4 instruction set > > mmx - Use the MMX instruction set > > mmxext - Use the Extended MMX instruction set (intersection of Enhanced > > 3DNow! and SSE instruction sets) (3dnowext or sse in cpuinfo) > > padlock - Use VIA padlock instructions > > popcnt - Enable popcnt instruction support > > sse - Use the SSE instruction set > > sse2 - Use the SSE2 instruction set > > sse3 - Use the SSE3 instruction set (pni in cpuinfo) > > sse4 - Enable SSE4 instruction support > > We shouldn't have an sse4 USE flag. It's either one of the three > below, but SSE4 by itself isn't a thing. Ok. dev-libs/marisa has --enable for all *four* of them :). And some totally crazy, broken --enable magic which looks very mismatched... > > sse4_1 - Enable SSE4.1 instruction support > > sse4_2 - Enable SSE4.2 instruction support > > sse4a - Enable SSE4a instruction support > > ssse3 - Use the SSSE3 instruction set -- Best regards, Michał Górny
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