[clang] [CIR] Add GlobalOp ctor and dtor regions (PR #160779)

[Henrich Lauko via cfe-commits]

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@@ -1815,24 +1819,34 @@ def CIR_GlobalOp : CIR_Op<"global", [
     (`comdat` $comdat^)?
     (`dso_local` $dso_local^)?
     $sym_name
-    custom<GlobalOpTypeAndInitialValue>($sym_type, $initial_value)
+    custom<GlobalOpTypeAndInitialValue>($sym_type, $initial_value,
+                                        $ctorRegion, $dtorRegion)
     attr-dict
   }];
 
   let extraClassDeclaration = [{
-    bool isDeclaration() { return !getInitialValue(); }
+    bool isDeclaration() {
+      return !getInitialValue() && getCtorRegion().empty() && getDtorRegion().empty();
+    }
     bool hasInitializer() { return !isDeclaration(); }
   }];
 
   let skipDefaultBuilders = 1;
 
-  let builders = [OpBuilder<(ins
-    "llvm::StringRef":$sym_name,
-    "mlir::Type":$sym_type,
-    CArg<"bool", "false">:$isConstant,
-    // CIR defaults to external linkage.
-    CArg<"cir::GlobalLinkageKind",
-    "cir::GlobalLinkageKind::ExternalLinkage">:$linkage)>];
+  let builders = [
+    OpBuilder<(ins
+      "llvm::StringRef":$sym_name,
+      "mlir::Type":$sym_type,
+      CArg<"bool", "false">:$isConstant,
+      // CIR defaults to external linkage.
+      CArg<"cir::GlobalLinkageKind",
+      "cir::GlobalLinkageKind::ExternalLinkage">:$linkage,
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xlauko wrote:

maybe align linkage the same way as builder below?

https://github.com/llvm/llvm-project/pull/160779