[llvm] [llubi] Improve diagnostics and add stacktrace (PR #195449)

[Antonio Frighetto via llvm-commits]

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@@ -102,6 +118,35 @@ class ExecutorBase {
   std::optional<ProgramExitInfo> getExitInfo() const;
 
   unsigned getIntSize() const;
+
+  void dumpStackTrace() const;
+};
+
+class DiagnosticReporter {
+  ExecutorBase &Executor;
+  std::string Buf;
+  raw_string_ostream OS;
+  DiagnosticKind Kind;
+
+public:
+  DiagnosticReporter(ExecutorBase &E, DiagnosticKind K)
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antoniofrighetto wrote:

I'd make explicit copy/move constructors and assignments as deleted.

https://github.com/llvm/llvm-project/pull/195449