[clang] [clang][utils] Add auto mode to reduction script (PR #163282)

[Paul Kirth via cfe-commits]

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@@ -472,6 +633,22 @@ def main():
         creduce_flags += ["--n", str(max(4, multiprocessing.cpu_count() // 2))]
 
     r = Reduce(crash_script, file_to_reduce, creduce_flags)
+    if args.auto:
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ilovepi wrote:

If you're OK w/ it, I'd like to keep the `--auto` mechanism in place, until we're happy w/ the extra steps. At that point, I think your idea to only try those other tools would make more sense. My thinking is that this is low risk to degrade any existing workflow until we're satisfied w/ the new methodology.

https://github.com/llvm/llvm-project/pull/163282