[clang] [clang-tools-extra] [Clang] [C2y] Implement N3355 ‘NamedLoops’ (PR #152870)

[via cfe-commits]

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@@ -3056,26 +3045,51 @@ class IndirectGotoStmt : public Stmt {
   }
 };
 
-/// ContinueStmt - This represents a continue.
-class ContinueStmt : public Stmt {
-public:
-  ContinueStmt(SourceLocation CL) : Stmt(ContinueStmtClass) {
-    setContinueLoc(CL);
+/// Base class for BreakStmt and ContinueStmt.
+class LoopControlStmt : public Stmt {
+  /// If this is a labeled break/continue, the label whose statement we're
+  /// targeting.
+  LabelDecl *TargetLabel = nullptr;
+
+  /// Location of the label, if any.
+  SourceLocation Label;
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Sirraide wrote:

Ah, no, we need this because the `LabelDecl*` that is looked up when we parse a labeled break/continue specifically finds an existing label decl which points to the label that names the loop, i.e.
```c++
a: // <-- LabelDecl
for (;;)
    break a; <-- Label
```
So we still need the source location to keep track of where the label after the break/continue is in source.

https://github.com/llvm/llvm-project/pull/152870