PR10026: Read marker/tracepoint args directly

We already stash the context variables for markers and tracepoints into
the locals for the probe body, but then we were using separate functions
to read those locals for each particular probe body.

This patch instead teaches the unparser how to emit the local name
directly for those context variables.  The resulting code from the
translator is much simpler now.

1 files changed, 5 insertions, 0 deletions

diff --git a/elaborate.h b/elaborate.h
index 0ad5b4b2..d927177b 100644
--- a/elaborate.h
+++ b/elaborate.h
@@ -129,6 +129,11 @@ struct derived_probe: public probe
   void printsig_nested (std::ostream &o) const;
   virtual void collect_derivation_chain (std::vector<probe*> &probes_list);
 
+  virtual void print_dupe_stamp(std::ostream&) {}
+  // To aid duplication elimination, print a stamp which uniquely identifies
+  // the code that will be added to the probe body.  (Doesn't need to be the
+  // actual code...)
+
   virtual void emit_probe_context_vars (translator_output*) {}
   // From within unparser::emit_common_header, add any extra variables
   // to this probe's context locals.