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. > 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. > 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 The rest look good to me.
