[llvm] [Debugify] Add 'error-test' mode for the debugify report script, for CI (PR #147574)

[Stephen Tozer via llvm-commits]

================
@@ -20,28 +19,77 @@ def __init__(self, origin, action, bb_name, fn_name, instr):
         self.fn_name = fn_name
         self.instr = instr
 
-    def __str__(self):
+    def key(self):
         return self.action + self.bb_name + self.fn_name + self.instr
 
+    def to_dict(self):
+        result = {
+            "instr": self.instr,
+            "fn_name": self.fn_name,
+            "bb_name": self.bb_name,
+            "action": self.action,
+        }
+        if self.origin:
+            result["origin"] = self.origin
+        return result
----------------
SLTozer wrote:

Added in latest commit.

https://github.com/llvm/llvm-project/pull/147574