[clang] [CIR] Upstream minimal support for structure types (PR #135105)

[Erich Keane via cfe-commits]

================
@@ -0,0 +1,9 @@
+// RUN: cir-opt %s | FileCheck %s
+
+!s32i = !cir.int<s, 32>
----------------
erichkeane wrote:

what is this doing?  I dont really see it in the check or definition lines.

https://github.com/llvm/llvm-project/pull/135105