[clang] Add support for builtin_verbose_trap (PR #79230)

[Dan Liew via cfe-commits]

================
@@ -0,0 +1,49 @@
+// RUN: %clang_cc1 -triple arm64-apple-ios -std=c++20 -emit-llvm -debug-info-kind=limited %s -o - | FileCheck %s
----------------
delcypher wrote:

Could we add a separate test that tests the trap merging behavior in optimized code?

https://github.com/llvm/llvm-project/pull/79230