[X86] Correct CPUID checks for AVX10 (#172350)

This corrects a wrong condition for avx10 (AVX10Ver is always set to
0/1) and corrects how CPUID for avx10 is queried: per ISE table 1-3 we
should query with EAX = 0x24 and ECX = 0x0 -- previously we omitted the
latter.

Issue reported by user Seraphimt here
https://discourse.llvm.org/t/test-for-sys-gethostcpufeatures/89130

Author: mikolaj-pirog

compiler-rt/lib/builtins/cpu_model/x86.c

@@ -1090,8 +1090,8 @@ static void getAvailableFeatures(unsigned ECX, unsigned EDX, unsigned MaxLeaf,
   if (HasLeaf1E && (EAX & 0x100))
     setFeature(FEATURE_AMX_MOVRS);
 
-  bool HasLeaf24 =
-      MaxLevel >= 0x24 && !getX86CpuIDAndInfo(0x24, &EAX, &EBX, &ECX, &EDX);
+  bool HasLeaf24 = MaxLevel >= 0x24 &&
+                   !getX86CpuIDAndInfoEx(0x24, 0x0, &EAX, &EBX, &ECX, &EDX);
   if (HasLeaf7Subleaf1 && ((EDX >> 19) & 1) && HasLeaf24) {
     int AVX10Ver = EBX & 0xff;
     if (AVX10Ver >= 1)

llvm/lib/TargetParser/Host.cpp

@@ -2192,10 +2192,10 @@ StringMap<bool> sys::getHostCPUFeatures() {
   Features["amx-avx512"] = HasLeaf1E && ((EAX >> 7) & 1) && HasAMXSave;
   Features["amx-movrs"] = HasLeaf1E && ((EAX >> 8) & 1) && HasAMXSave;
 
-  bool HasLeaf24 =
-      MaxLevel >= 0x24 && !getX86CpuIDAndInfo(0x24, &EAX, &EBX, &ECX, &EDX);
+  bool HasLeaf24 = MaxLevel >= 0x24 &&
+                   !getX86CpuIDAndInfoEx(0x24, 0x0, &EAX, &EBX, &ECX, &EDX);
 
-  int AVX10Ver = HasLeaf24 && (EBX & 0xff);
+  int AVX10Ver = HasLeaf24 ? (EBX & 0xff) : 0;
   Features["avx10.1"] = HasAVX10 && AVX10Ver >= 1;
   Features["avx10.2"] = HasAVX10 && AVX10Ver >= 2;