[clang] [clang][X86] Support __attribute__((model("small"/"large"))) (PR #124834)

[Arthur Eubanks via cfe-commits]

================
@@ -5,7 +5,7 @@
 // RUN: %clang_cc1 -triple riscv64 -verify=expected,riscv64 -fsyntax-only %s
 // RUN: %clang_cc1 -triple x86_64 -verify=expected,x86_64 -fsyntax-only %s
----------------
aeubanks wrote:

done

https://github.com/llvm/llvm-project/pull/124834