[clang] [CIR] Introduce LocalInitOp, & lower static locals (PR #193576)

[Henrich Lauko via cfe-commits]

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@@ -3848,6 +3803,67 @@ def CIR_FuncOp : CIR_Op<"func", [
   }];
 }
 
+//===----------------------------------------------------------------------===//
+// LocalInitOp
+//===----------------------------------------------------------------------===//
+
+def CIR_LocalInitOp : CIR_Op<"local_init", [
+  DeclareOpInterfaceMethods<SymbolUserOpInterface>, NoRegionArguments,
+  ParentOneOf<["cir::FuncOp"]>,
+  HasAtMostOneOfAttrs<["tls", "static_local"]>
+]> {
+  let summary = "initialize a static or thread local object";
+  let description = [{
+    The 'cir.local_init' operation has no result, but is responsible for
+    containing the regions to initialize and destroy the static local
+    variable. This will be handled during lowering-prepare to include the
+    guard variables correctly for the variable.
+
+    Example:
+    ```
+    cir.local_init static_local @GlobalName ctor {
+      %4 = cir.get_global static_local @GlobalName : !cir.ptr<!rec_CtorDtor>
+      %5 = cir.call @_Z5get_iv() : () -> !s32i
+      cir.call @_ZN8CtorDtorC1Ei(%4, %5) : !cir.ptr<!rec_CtorDtor>
+      cir.yield
+    }, dtor {
+      %4 = cir.get_global static_local @_ZZ3foovE8localCD2 :
+                                                  !cir.ptr<!rec_CtorDtor>
+      cir.call @_ZN8CtorDtorD1Ev(%4) : (!cir.ptr<!rec_CtorDtor>) -> ()
+      cir.yield
+    }
+  }];
+  let arguments = (ins
+    FlatSymbolRefAttr : $globalName,
+    UnitAttr : $tls,
+    UnitAttr : $static_local
+  );
+  let regions = (region
+      MaxSizedRegion<1>:$ctorRegion,
+      MaxSizedRegion<1>:$dtorRegion
+  );
+
+  let assemblyFormat = [{
+    (`thread_local` $tls^)?
+    (`static_local` $static_local^)?
+    $globalName attr-dict
+    (`ctor` $ctorRegion^)?
+    (`dtor` $dtorRegion^)?
+  }];
+
+  let extraClassDeclaration = [{
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xlauko wrote:

Can you fix indent here please

https://github.com/llvm/llvm-project/pull/193576