[clang] [LifetimeSafety] Add bailout for large CFGs (PR #170444)

[Utkarsh Saxena via cfe-commits]

================
@@ -0,0 +1,47 @@
+// RUN: %clang_cc1 -fsyntax-only -fexperimental-lifetime-safety -Wexperimental-lifetime-safety -fexperimental-lifetime-safety-max-cfg-blocks=3 -Wno-dangling %s 2>&1 | FileCheck %s --check-prefix=CHECK-BAILOUT
+// RUN: %clang_cc1 -fsyntax-only -fexperimental-lifetime-safety -Wexperimental-lifetime-safety -Wno-dangling %s 2>&1 | FileCheck %s --check-prefix=CHECK-NOBAILOUT
----------------
usx95 wrote:

Please use -verify=foo,bar to verify clang diagnostics instead of using FileCheck

https://clang.llvm.org/docs/InternalsManual.html#verifying-diagnostics

https://github.com/llvm/llvm-project/pull/170444