forked from mirrors/nixpkgs
78 lines
3.6 KiB
Nix
78 lines
3.6 KiB
Nix
{ lib }:
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rec {
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# platform.gcc.arch to its features (as in /proc/cpuinfo)
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features = {
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default = [ ];
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# x86_64 Intel
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westmere = [ "sse3" "ssse3" "sse4_1" "sse4_2" "aes" ];
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sandybridge = [ "sse3" "ssse3" "sse4_1" "sse4_2" "aes" "avx" ];
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ivybridge = [ "sse3" "ssse3" "sse4_1" "sse4_2" "aes" "avx" ];
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haswell = [ "sse3" "ssse3" "sse4_1" "sse4_2" "aes" "avx" "avx2" "fma" ];
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broadwell = [ "sse3" "ssse3" "sse4_1" "sse4_2" "aes" "avx" "avx2" "fma" ];
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skylake = [ "sse3" "ssse3" "sse4_1" "sse4_2" "aes" "avx" "avx2" "fma" ];
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skylake-avx512 = [ "sse3" "ssse3" "sse4_1" "sse4_2" "aes" "avx" "avx2" "avx512" "fma" ];
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# x86_64 AMD
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btver1 = [ "sse3" "ssse3" "sse4_1" "sse4_2" ];
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btver2 = [ "sse3" "ssse3" "sse4_1" "sse4_2" "aes" "avx" ];
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bdver1 = [ "sse3" "ssse3" "sse4_1" "sse4_2" "sse4a" "aes" "avx" "fma" "fma4" ];
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bdver2 = [ "sse3" "ssse3" "sse4_1" "sse4_2" "sse4a" "aes" "avx" "fma" "fma4" ];
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bdver3 = [ "sse3" "ssse3" "sse4_1" "sse4_2" "sse4a" "aes" "avx" "fma" "fma4" ];
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bdver4 = [ "sse3" "ssse3" "sse4_1" "sse4_2" "sse4a" "aes" "avx" "avx2" "fma" "fma4" ];
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znver1 = [ "sse3" "ssse3" "sse4_1" "sse4_2" "sse4a" "aes" "avx" "avx2" "fma" ];
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znver2 = [ "sse3" "ssse3" "sse4_1" "sse4_2" "sse4a" "aes" "avx" "avx2" "fma" ];
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# other
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armv5te = [ ];
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armv6 = [ ];
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armv7-a = [ ];
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armv8-a = [ ];
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mips32 = [ ];
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loongson2f = [ ];
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};
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# a superior CPU has all the features of an inferior and is able to build and test code for it
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inferiors = {
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# x86_64 Intel
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default = [ ];
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westmere = [ ];
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sandybridge = [ "westmere" ] ++ inferiors.westmere;
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ivybridge = [ "sandybridge" ] ++ inferiors.sandybridge;
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haswell = [ "ivybridge" ] ++ inferiors.ivybridge;
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broadwell = [ "haswell" ] ++ inferiors.haswell;
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skylake = [ "broadwell" ] ++ inferiors.broadwell;
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skylake-avx512 = [ "skylake" ] ++ inferiors.skylake;
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# x86_64 AMD
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btver1 = [ ];
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btver2 = [ ]; # TODO: fill this (need testing)
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bdver1 = [ ]; # TODO: fill this (need testing)
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bdver2 = [ ]; # TODO: fill this (need testing)
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bdver3 = [ ]; # TODO: fill this (need testing)
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bdver4 = [ ]; # TODO: fill this (need testing)
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znver1 = [ ]; # TODO: fill this (need testing)
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znver2 = [ ]; # TODO: fill this (need testing)
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# other
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armv5te = [ ];
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armv6 = [ ];
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armv7-a = [ ];
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armv8-a = [ ];
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mips32 = [ ];
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loongson2f = [ ];
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};
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predicates = let
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featureSupport = feature: x: builtins.elem feature features.${x};
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in {
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sse3Support = featureSupport "sse3";
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ssse3Support = featureSupport "ssse3";
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sse4_1Support = featureSupport "sse4_1";
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sse4_2Support = featureSupport "sse4_2";
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sse4_aSupport = featureSupport "sse4a";
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avxSupport = featureSupport "avx";
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avx2Support = featureSupport "avx2";
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avx512Support = featureSupport "avx512";
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aesSupport = featureSupport "aes";
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fmaSupport = featureSupport "fma";
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fma4Support = featureSupport "fma4";
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};
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}
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