[clang codegen] Fix the ci fail for PR98704 (#99267)

Different targets may have different flag on arguments, so restrict the
triple to avoid ci fail.

Author: vfdff

clang/test/CodeGen/math-libcalls-tbaa.cpp

@@ -1,7 +1,7 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
 
-// RUN:  %clang_cc1 -fmath-errno -O3 -emit-llvm -o - -x c++ %s | FileCheck %s -check-prefixes=CHECK,NoNewStructPathTBAA
-// RUN:  %clang_cc1 -fmath-errno -O3 -new-struct-path-tbaa -emit-llvm -o - -x c++ %s | FileCheck %s -check-prefixes=CHECK,NewStructPathTBAA
+// RUN:  %clang_cc1 -triple=aarch64-unknown-linux-gnu -fmath-errno -O3 -emit-llvm -o - -x c++ %s | FileCheck %s -check-prefixes=CHECK,NoNewStructPathTBAA
+// RUN:  %clang_cc1 -triple=aarch64-unknown-linux-gnu -fmath-errno -O3 -new-struct-path-tbaa -emit-llvm -o - -x c++ %s | FileCheck %s -check-prefixes=CHECK,NewStructPathTBAA
 
 extern "C" float expf(float);