compiler-rt/builtins/cpu_model.c

487 static void getAvailableFeatures(unsigned ECX, unsigned EDX, unsigned MaxLeaf,
502   if ((EDX >> 15) & 1)
504   if ((EDX >> 23) & 1)
506   if ((EDX >> 25) & 1)
508   if ((EDX >> 26) & 1)
532   bool HasAVX = ((ECX & AVXBits) == AVXBits) && !getX86XCR0(&EAX, &EDX) &&
540       MaxLeaf >= 0x7 && !getX86CpuIDAndInfoEx(0x7, 0x0, &EAX, &EBX, &ECX, &EDX);
580   if (HasLeaf7 && ((EDX >> 2) & 1) && HasAVX512Save)
582   if (HasLeaf7 && ((EDX >> 3) & 1) && HasAVX512Save)
586   getX86CpuIDAndInfo(0x80000000, &MaxExtLevel, &EBX, &ECX, &EDX);
589                      !getX86CpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
639   unsigned EAX, EBX, ECX, EDX;
654   if (getX86CpuIDAndInfo(0, &MaxLeaf, &Vendor, &ECX, &EDX) || MaxLeaf < 1) {
658   getX86CpuIDAndInfo(1, &EAX, &EBX, &ECX, &EDX);
663   getAvailableFeatures(ECX, EDX, MaxLeaf, &Features, &Features2);