[clang] [CIR][CodeGen] Support DesignatedInitUpdateExpr in constant emission (PR #194238)

[Andy Kaylor via cfe-commits]

================
@@ -0,0 +1,112 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
----------------
andykaylor wrote:

We're trying to combine LLVM and OGCG checks to use the same prefix when they match, which they appear to here. Can you make this update?

https://github.com/llvm/llvm-project/pull/194238