[clang] [CIR] Upstream LabelOp (PR #152802)

[Morris Hafner via cfe-commits]

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@@ -429,6 +443,32 @@ CIRGenFunction::emitContinueStmt(const clang::ContinueStmt &s) {
   return mlir::success();
 }
 
+mlir::LogicalResult CIRGenFunction::emitLabel(const clang::LabelDecl *d) {
+  // Create a new block to tag with a label and add a branch from
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mmha wrote:

The labels as values gcc extension is not part of this patch, but I wonder how that will look like. Should `cir.label` be a value in general or do we need a new op for `AddrLabelExpr`s`?

https://github.com/llvm/llvm-project/pull/152802