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add windows ssse3,sse4_1,sse4_2 detection for non avx path (#251)

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* add windows ssse3,sse4_1,sse4_2 detection for non avx path

* remove special WESTMERE case

* move windows conditional redefinition to separate header

* fix minor issues
This commit is contained in:
Andrei Kurushin
2022-07-21 22:56:50 +03:00
committed by GitHub
parent 8eb944f55d
commit 38ae5d095c
5 changed files with 64 additions and 28 deletions
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18
src/impl_x86_windows.c
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@ -24,7 +24,7 @@ static void OverrideOsPreserves(OsPreserves* os_preserves) {
// No override
}
#include <windows.h> // IsProcessorFeaturePresent
#include "internal/windows_utils.h"
#if defined(CPU_FEATURES_MOCK_CPUID_X86)
extern bool GetWindowsIsProcessorFeaturePresent(DWORD);
@ -43,15 +43,15 @@ static void DetectFeaturesFromOs(X86Info* info, X86Features* features) {
GetWindowsIsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE);
features->sse3 =
GetWindowsIsProcessorFeaturePresent(PF_SSE3_INSTRUCTIONS_AVAILABLE);
features->ssse3 =
GetWindowsIsProcessorFeaturePresent(PF_SSSE3_INSTRUCTIONS_AVAILABLE);
features->sse4_1 =
GetWindowsIsProcessorFeaturePresent(PF_SSE4_1_INSTRUCTIONS_AVAILABLE);
features->sse4_2 =
GetWindowsIsProcessorFeaturePresent(PF_SSE4_2_INSTRUCTIONS_AVAILABLE);
// https://github.com/google/cpu_features/issues/200
#if (_WIN32_WINNT >= 0x0601) // Win7+
if (GetX86Microarchitecture(info) == INTEL_WSM) {
features->ssse3 = true;
features->sse4_1 = true;
features->sse4_2 = true;
}
#endif
// do not bother checking PF_AVX*
// cause AVX enabled processor will have XCR0 be exposed and this function will be skipped at all
}
#endif // CPU_FEATURES_OS_WINDOWS