[clang] [Clang] Add fake use emission to Clang with -fextend-lifetimes (PR #110102)

[Jeremy Morse via cfe-commits]

================
@@ -0,0 +1,18 @@
+// RUN: %clang -S -O2 -emit-llvm -fextend-lifetimes %s -o - | FileCheck %s
+// REQUIRES: asserts
----------------
jmorse wrote:

Is this REQUIRES a proxy for needing value-names, as above?

https://github.com/llvm/llvm-project/pull/110102