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| #pragma once
|
| #include <cstdint>
|
| #ifdef _MSC_VER
| #include <intrin.h>
| #endif
|
| #include "caffe2/core/common.h"
|
| namespace caffe2 {
|
| class CpuId;
|
| CAFFE2_API const CpuId& GetCpuId();
|
| ///////////////////////////////////////////////////////////////////////////////
| // Implementation of CpuId that is borrowed from folly.
| ///////////////////////////////////////////////////////////////////////////////
|
| /**
| * Identification of an Intel CPU.
| * Supports CPUID feature flags (EAX=1) and extended features (EAX=7, ECX=0).
| * Values from
| * http://www.intel.com/content/www/us/en/processors/processor-identification-cpuid-instruction-note.html
| */
| class CpuId {
| public:
| CpuId();
|
| #define X(name, r, bit) \
| inline bool name() const { \
| return ((r) & (1U << bit)) != 0; \
| }
|
| // cpuid(1): Processor Info and Feature Bits.
| #define C(name, bit) X(name, f1c_, bit)
| C(sse3, 0)
| C(pclmuldq, 1)
| C(dtes64, 2)
| C(monitor, 3)
| C(dscpl, 4)
| C(vmx, 5)
| C(smx, 6)
| C(eist, 7)
| C(tm2, 8)
| C(ssse3, 9)
| C(cnxtid, 10)
| C(fma, 12)
| C(cx16, 13)
| C(xtpr, 14)
| C(pdcm, 15)
| C(pcid, 17)
| C(dca, 18)
| C(sse41, 19)
| C(sse42, 20)
| C(x2apic, 21)
| C(movbe, 22)
| C(popcnt, 23)
| C(tscdeadline, 24)
| C(aes, 25)
| C(xsave, 26)
| C(osxsave, 27)
| C(avx, 28)
| C(f16c, 29)
| C(rdrand, 30)
| #undef C
|
| #define D(name, bit) X(name, f1d_, bit)
| D(fpu, 0)
| D(vme, 1)
| D(de, 2)
| D(pse, 3)
| D(tsc, 4)
| D(msr, 5)
| D(pae, 6)
| D(mce, 7)
| D(cx8, 8)
| D(apic, 9)
| D(sep, 11)
| D(mtrr, 12)
| D(pge, 13)
| D(mca, 14)
| D(cmov, 15)
| D(pat, 16)
| D(pse36, 17)
| D(psn, 18)
| D(clfsh, 19)
| D(ds, 21)
| D(acpi, 22)
| D(mmx, 23)
| D(fxsr, 24)
| D(sse, 25)
| D(sse2, 26)
| D(ss, 27)
| D(htt, 28)
| D(tm, 29)
| D(pbe, 31)
| #undef D
|
| // cpuid(7): Extended Features.
| #define B(name, bit) X(name, f7b_, bit)
| B(bmi1, 3)
| B(hle, 4)
| B(avx2, 5)
| B(smep, 7)
| B(bmi2, 8)
| B(erms, 9)
| B(invpcid, 10)
| B(rtm, 11)
| B(mpx, 14)
| B(avx512f, 16)
| B(avx512dq, 17)
| B(rdseed, 18)
| B(adx, 19)
| B(smap, 20)
| B(avx512ifma, 21)
| B(pcommit, 22)
| B(clflushopt, 23)
| B(clwb, 24)
| B(avx512pf, 26)
| B(avx512er, 27)
| B(avx512cd, 28)
| B(sha, 29)
| B(avx512bw, 30)
| B(avx512vl, 31)
| #undef B
|
| #define E(name, bit) X(name, f7c_, bit)
| E(prefetchwt1, 0)
| E(avx512vbmi, 1)
| #undef E
|
| #undef X
|
| private:
| CAFFE2_API static uint32_t f1c_;
| CAFFE2_API static uint32_t f1d_;
| CAFFE2_API static uint32_t f7b_;
| CAFFE2_API static uint32_t f7c_;
| };
|
| } // namespace caffe2
|
|
