689 static bool supports_popcnt() { return (_cpuFeatures & CPU_POPCNT) != 0; }
690 static bool supports_avx() { return (_cpuFeatures & CPU_AVX) != 0; }
691 static bool supports_avx2() { return (_cpuFeatures & CPU_AVX2) != 0; }
692 static bool supports_tsc() { return (_cpuFeatures & CPU_TSC) != 0; }
693 static bool supports_aes() { return (_cpuFeatures & CPU_AES) != 0; }
694 static bool supports_erms() { return (_cpuFeatures & CPU_ERMS) != 0; }
695 static bool supports_clmul() { return (_cpuFeatures & CPU_CLMUL) != 0; }
696 static bool supports_rtm() { return (_cpuFeatures & CPU_RTM) != 0; }
697 static bool supports_bmi1() { return (_cpuFeatures & CPU_BMI1) != 0; }
698 static bool supports_bmi2() { return (_cpuFeatures & CPU_BMI2) != 0; }
699 static bool supports_adx() { return (_cpuFeatures & CPU_ADX) != 0; }
700 static bool supports_evex() { return (_cpuFeatures & CPU_AVX512F) != 0; }
701 static bool supports_avx512dq() { return (_cpuFeatures & CPU_AVX512DQ) != 0; }
702 static bool supports_avx512pf() { return (_cpuFeatures & CPU_AVX512PF) != 0; }
703 static bool supports_avx512er() { return (_cpuFeatures & CPU_AVX512ER) != 0; }
704 static bool supports_avx512cd() { return (_cpuFeatures & CPU_AVX512CD) != 0; }
705 static bool supports_avx512bw() { return (_cpuFeatures & CPU_AVX512BW) != 0; }
706 static bool supports_avx512vl() { return (_cpuFeatures & CPU_AVX512VL) != 0; }
707 static bool supports_avx512vlbw() { return (supports_avx512bw() && supports_avx512vl()); }
708 static bool supports_avx512novl() { return (supports_evex() && !supports_avx512vl()); }
709 // Intel features
710 static bool is_intel_family_core() { return is_intel() &&
711 extended_cpu_family() == CPU_FAMILY_INTEL_CORE; }
712
713 static bool is_intel_tsc_synched_at_init() {
714 if (is_intel_family_core()) {
715 uint32_t ext_model = extended_cpu_model();
716 if (ext_model == CPU_MODEL_NEHALEM_EP ||
717 ext_model == CPU_MODEL_WESTMERE_EP ||
718 ext_model == CPU_MODEL_SANDYBRIDGE_EP ||
719 ext_model == CPU_MODEL_IVYBRIDGE_EP) {
720 // <= 2-socket invariant tsc support. EX versions are usually used
721 // in > 2-socket systems and likely don't synchronize tscs at
722 // initialization.
723 // Code that uses tsc values must be prepared for them to arbitrarily
724 // jump forward or backward.
725 return true;
726 }
727 }
728 return false;
|
689 static bool supports_popcnt() { return (_cpuFeatures & CPU_POPCNT) != 0; }
690 static bool supports_avx() { return (_cpuFeatures & CPU_AVX) != 0; }
691 static bool supports_avx2() { return (_cpuFeatures & CPU_AVX2) != 0; }
692 static bool supports_tsc() { return (_cpuFeatures & CPU_TSC) != 0; }
693 static bool supports_aes() { return (_cpuFeatures & CPU_AES) != 0; }
694 static bool supports_erms() { return (_cpuFeatures & CPU_ERMS) != 0; }
695 static bool supports_clmul() { return (_cpuFeatures & CPU_CLMUL) != 0; }
696 static bool supports_rtm() { return (_cpuFeatures & CPU_RTM) != 0; }
697 static bool supports_bmi1() { return (_cpuFeatures & CPU_BMI1) != 0; }
698 static bool supports_bmi2() { return (_cpuFeatures & CPU_BMI2) != 0; }
699 static bool supports_adx() { return (_cpuFeatures & CPU_ADX) != 0; }
700 static bool supports_evex() { return (_cpuFeatures & CPU_AVX512F) != 0; }
701 static bool supports_avx512dq() { return (_cpuFeatures & CPU_AVX512DQ) != 0; }
702 static bool supports_avx512pf() { return (_cpuFeatures & CPU_AVX512PF) != 0; }
703 static bool supports_avx512er() { return (_cpuFeatures & CPU_AVX512ER) != 0; }
704 static bool supports_avx512cd() { return (_cpuFeatures & CPU_AVX512CD) != 0; }
705 static bool supports_avx512bw() { return (_cpuFeatures & CPU_AVX512BW) != 0; }
706 static bool supports_avx512vl() { return (_cpuFeatures & CPU_AVX512VL) != 0; }
707 static bool supports_avx512vlbw() { return (supports_avx512bw() && supports_avx512vl()); }
708 static bool supports_avx512novl() { return (supports_evex() && !supports_avx512vl()); }
709 static bool supports_avx512nobw() { return (supports_evex() && !supports_avx512bw()); }
710 static bool supports_avx256only() { return (supports_avx2() && !supports_evex()); }
711 // Intel features
712 static bool is_intel_family_core() { return is_intel() &&
713 extended_cpu_family() == CPU_FAMILY_INTEL_CORE; }
714
715 static bool is_intel_tsc_synched_at_init() {
716 if (is_intel_family_core()) {
717 uint32_t ext_model = extended_cpu_model();
718 if (ext_model == CPU_MODEL_NEHALEM_EP ||
719 ext_model == CPU_MODEL_WESTMERE_EP ||
720 ext_model == CPU_MODEL_SANDYBRIDGE_EP ||
721 ext_model == CPU_MODEL_IVYBRIDGE_EP) {
722 // <= 2-socket invariant tsc support. EX versions are usually used
723 // in > 2-socket systems and likely don't synchronize tscs at
724 // initialization.
725 // Code that uses tsc values must be prepared for them to arbitrarily
726 // jump forward or backward.
727 return true;
728 }
729 }
730 return false;
|