[clang] [CIR] Integral types; simple global variables (PR #118743)

[Erich Keane via cfe-commits]

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@@ -74,6 +75,32 @@ class LLVMLoweringInfo {
 class CIR_Op<string mnemonic, list<Trait> traits = []> :
     Op<CIR_Dialect, mnemonic, traits>, LLVMLoweringInfo;
 
+//===----------------------------------------------------------------------===//
+// GlobalOp
+//===----------------------------------------------------------------------===//
+
+// TODO(CIR): For starters, cir.global has only name and type.  The other
+// properties of a global variable will be added over time as more of ClangIR
+// is upstreamed.
+
+def GlobalOp : CIR_Op<"global"> {
+  let summary = "Declare or define a global variable";
+  let description = [{
+    ... lots of text to be added later ...
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erichkeane wrote:

Would still prefer a bit of a stub here, even if it is incomplete (rather than just a 'todo') as this makes it to our documentation.

https://github.com/llvm/llvm-project/pull/118743