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Fix subleaf in Intel CPUID #1278

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Fix subleaf in Intel CPUID #1278

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12 changes: 6 additions & 6 deletions include/xsimd/config/xsimd_cpu_features_x86.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -528,12 +528,12 @@ namespace xsimd
__cpuidex(buf, leaf, subleaf);
std::memcpy(reg.data(), buf, sizeof(buf));

#elif defined(__INTEL_COMPILER)
int buf[4];
__cpuid(buf, leaf);
std::memcpy(reg.data(), buf, sizeof(buf));

#elif defined(__GNUC__) || defined(__clang__)
// Intel compiler has long had support for `__cpuid`, but only recently for `__cpuidex`.
// Modern Clang and GCC also now support `__cpuidex`.
// It was decided to keep the inline ASM version for maximum compatibility, as the difference
// in ASM is negligible compared to the cost of CPUID.
// https://github.com/xtensor-stack/xsimd/pull/1278
#elif defined(__GNUC__) || defined(__clang__) || defined(__INTEL_COMPILER)

#if defined(__i386__) && defined(__PIC__)
// %ebx may be the PIC register
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