File default-to-i586.patch of Package llvm18

Index: cfe-6.0.0rc1.src/lib/Driver/ToolChains/Arch/X86.cpp
===================================================================
--- cfe-6.0.0rc1.src.orig/lib/Driver/ToolChains/Arch/X86.cpp
+++ cfe-6.0.0rc1.src/lib/Driver/ToolChains/Arch/X86.cpp
@@ -102,8 +102,8 @@ const char *x86::getX86TargetCPU(const A
   case llvm::Triple::FreeBSD:
     return "i686";
   default:
-    // Fallback to p4.
-    return "pentium4";
+    // Fallback to i586.
+    return "i586";
   }
 }