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Skip including cpuid.h under Windows with Clang-cl #296

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Skip including cpuid.h under Windows with Clang-cl #296

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ef9188f
Skip including cpuid.h under Windows Clang build where _MSC_VER is de…
ericstone93 Apr 29, 2026
7907aa5
Skip _cpuid_count usage under Windows Clang-cl build
ericstone93 Apr 30, 2026
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2 changes: 1 addition & 1 deletion Extensions/DirectXMathAVX2.h
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ namespace DirectX
if ((CPUInfo[2] & 0x38081001) != 0x38081001)
return false;

#if defined(__clang__) || defined(__GNUC__)
#if (defined(__clang__) || defined(__GNUC__)) && !defined(_MSC_VER)
__cpuid_count(7, 0, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
#else
__cpuidex(CPUInfo, 7, 0);
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2 changes: 1 addition & 1 deletion Inc/DirectXMath.h
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Expand Up @@ -124,7 +124,7 @@
#pragma warning(pop)
#endif

#if (defined(__clang__) || defined(__GNUC__)) && (__x86_64__ || __i386__) && !defined(__MINGW32__)
#if (defined(__clang__) || defined(__GNUC__)) && (__x86_64__ || __i386__) && !defined(__MINGW32__) && !defined(_MSC_VER)
#include <cpuid.h>
#endif

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2 changes: 1 addition & 1 deletion Inc/DirectXMathMisc.inl
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Expand Up @@ -2022,7 +2022,7 @@ inline bool XMVerifyCPUSupport() noexcept
return false; // No SSE2/SSE support

#if defined(__AVX2__) || defined(_XM_AVX2_INTRINSICS_)
#if defined(__clang__) || defined(__GNUC__)
#if (defined(__clang__) || defined(__GNUC__)) && !defined(_MSC_VER)
__cpuid_count(7, 0, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
#else
__cpuidex(CPUInfo, 7, 0);
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