[llvm] [AMDGPU][test]added unique and sort options for update_mc_test_check script (PR #111769)

[Ivan Kosarev via llvm-commits]

================
@@ -298,23 +325,88 @@ def main():
                     else:
                         gen_prefix += getStdCheckLine(prefix, o, mc_mode)
 
-            generated_prefixes.append(gen_prefix.rstrip("\n"))
+            generated_prefixes[input_line] = gen_prefix.rstrip("\n")
 
         # write output
-        prefix_id = 0
         for input_info in ti.iterlines(output_lines):
             input_line = input_info.line
-            if isTestLine(input_line, mc_mode):
+            if input_line in testlines:
                 output_lines.append(input_line)
-                output_lines.append(generated_prefixes[prefix_id])
-                prefix_id += 1
+                output_lines.append(generated_prefixes[input_line])
 
             elif should_add_line_to_output(input_line, prefix_set, mc_mode):
                 output_lines.append(input_line)
 
-            elif input_line in ti.run_lines or input_line == "":
-                output_lines.append(input_line)
+        if ti.args.unique or ti.args.sort:
+            # split with double newlines
+            test_units = "\n".join(output_lines).split("\n\n")
+
+            # select the key line for each test unit
+            test_dic = {}
+            for unit in test_units:
+                lines = unit.split("\n")
+                for l in lines:
+                    # if contains multiple lines, use
+                    # the first testline or runline as key
+                    if isTestLine(l, mc_mode):
+                        test_dic[unit] = l
+                        break
+                    elif isRunLine(l):
----------------
kosarev wrote:

Nit: can be just `if`.

https://github.com/llvm/llvm-project/pull/111769