Add -fclang-abi-compat=latest to aarch64-sve-vector-init.cpp

Author: aemerson

clang/test/CodeGenCXX/aarch64-sve-vector-init.cpp

@@ -1,5 +1,5 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 2
-// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -fclang-abi-compat=latest -triple aarch64-none-linux-gnu -target-feature +sve -emit-llvm -o - %s | FileCheck %s
 
 // CHECK-LABEL: define dso_local void @_Z11test_localsv
 // CHECK-SAME: () #[[ATTR0:[0-9]+]] {