[llvm] Fix thinko in getVendorSignature(), where expected values of ECX and EDX were flipped for the AMD case.

Follow up to D97504

Differential Revision: https://reviews.llvm.org/D98322

(cherry picked from commit 64d2c32)

Author: oontvoo

llvm/lib/Support/Host.cpp

@@ -509,11 +509,11 @@ VendorSignatures getVendorSignature(unsigned *MaxLeaf) {
     return VendorSignatures::UNKNOWN;
 
   // "Genu ineI ntel"
-  if (EBX == 0x756e6547 && ECX == 0x6c65746e && EDX == 0x49656e69)
+  if (EBX == 0x756e6547 && EDX == 0x49656e69 && ECX == 0x6c65746e)
     return VendorSignatures::GENUINE_INTEL;
 
   // "Auth enti cAMD"
-  if (EBX == 0x68747541 && ECX == 0x69746e65 && EDX == 0x444d4163)
+  if (EBX == 0x68747541 && EDX == 0x69746e65 && ECX == 0x444d4163)
     return VendorSignatures::AUTHENTIC_AMD;
 
   return VendorSignatures::UNKNOWN;