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Hardware: Query sysctl for instructon sets

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This may be more accurate than guessing.
This commit is contained in:
Misty De Meo 2013-07-02 16:08:03 -05:00
parent 53c97c3c96
commit 22576e87a0
1 changed files with 8 additions and 5 deletions
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13
Library/Homebrew/os/mac/hardware.rb
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@ -76,20 +76,23 @@ module MacCPUs
end
def altivec?
type == :ppc && family != :g3
@altivec ||= sysctl_bool('hw.optional.altivec')
end
def avx?
pre_sandy = [:core, :core2, :penryn, :nehalem, :arrandale].include? family
type == :intel && !pre_sandy
@avx ||= sysctl_bool('hw.optional.avx1_0')
end
def sse3?
type == :intel
@sse3 ||= sysctl_bool('hw.optional.sse3')
end
def sse4?
type == :intel && (family != :core && family != :core2)
@sse4 ||= sysctl_bool('hw.optional.sse4_1')
end
def sse4_2?
@sse4 ||= sysctl_bool('hw.optional.sse4_2')
end
protected