[clang] [Clang][ByteCode] Implement case ranges (PR #168418)

[Timm Baeder via cfe-commits]

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@@ -86,3 +86,71 @@ constexpr int another_test(int val) { // both-note {{declared here}}
 }
 static_assert(another_test(1) == 100, ""); // both-error {{static assertion failed}} \
                                            // both-note {{evaluates to}}
+
+namespace gnurange {
+constexpr int l(int n) {
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tbaederr wrote:

Ident one leven in the namespace

https://github.com/llvm/llvm-project/pull/168418