[clang] [llvm] [X86] Support apxf in attribute target (PR #184078)

[Phoebe Wang via cfe-commits]

================
@@ -185,3 +185,18 @@ int __attribute__((target("default"))) no_priority3(void);
 int __attribute__((target("avx2"))) no_priority3(void);
 // expected-error at +1 {{function multiversioning doesn't support feature 'sha'}}
 int __attribute__((target("sha"))) no_priority3(void);
+
+int __attribute__((target("default"))) apxf_mv(void) { return 0; }
+int __attribute__((target("apxf"))) apxf_mv(void) { return 1; }
----------------
phoebewang wrote:

Should check priorities against avx10.2?

https://github.com/llvm/llvm-project/pull/184078