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return architecture levels for micromamba #2921

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merged 6 commits into from
Oct 23, 2023
Merged

return architecture levels for micromamba #2921

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798bf52
return architecture levels for micromamba
isuruf Oct 18, 2023
a10bf03
fix formatting
isuruf Oct 18, 2023
e07c8cf
use function multiversioning only on x86
isuruf Oct 18, 2023
e9c3ac3
fix formatting
isuruf Oct 18, 2023
151f21d
update test
isuruf Oct 18, 2023
e0bdded
use __builtin_cpu_supports and check for more features
isuruf Oct 18, 2023
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29 changes: 28 additions & 1 deletion libmamba/src/core/virtual_packages.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -163,6 +163,33 @@ namespace mamba
return res;
}

std::string get_archspec_x86_64()
{
#if (defined(__GNUC__) || defined(__clang__)) && __x86_64__
/* if (__builtin_cpu_supports ("x86-64-v4")) */
if (__builtin_cpu_supports("avx512f") && __builtin_cpu_supports("avx512bw")
&& __builtin_cpu_supports("avx512cd") && __builtin_cpu_supports("avx512dq")
&& __builtin_cpu_supports("avx512vl"))
{
return "x86_64-v4";
}
/* if (__builtin_cpu_supports ("x86-64-v3")) */
if (__builtin_cpu_supports("avx") && __builtin_cpu_supports("avx2")
&& __builtin_cpu_supports("bmi") && __builtin_cpu_supports("bmi2")
&& __builtin_cpu_supports("fma"))
{
return "x86_64-v3";
}
/* if (__builtin_cpu_supports ("x86-64-v2")) */
if (__builtin_cpu_supports("popcnt") && __builtin_cpu_supports("sse3")
&& __builtin_cpu_supports("ssse3") && __builtin_cpu_supports("sse4.1")
&& __builtin_cpu_supports("sse4.2"))
{
return "x86_64-v2";
}
#endif
return "x86_64";
}
std::vector<PackageInfo> dist_packages(const Context& context)
{
LOG_DEBUG << "Loading distribution virtual packages";
Expand Down Expand Up @@ -222,7 +249,7 @@ namespace mamba

if (arch == "64")
{
arch = "x86_64";
arch = get_archspec_x86_64();
}
else if (arch == "32")
{
Expand Down
2 changes: 1 addition & 1 deletion libmamba/tests/src/core/test_virtual_packages.cpp
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Expand Up @@ -73,7 +73,7 @@ namespace mamba
}
#if __x86_64__ || defined(_WIN64)
CHECK_EQ(pkgs.back().name, "__archspec");
CHECK_EQ(pkgs.back().build_string, "x86_64");
CHECK_EQ(pkgs.back().build_string.find("x86_64"), 0);
#endif

// This is bad design, tests should not interfer
Expand Down