LLVM-REDUCE(1)

💖 NAME 💖

okay bestie, welcome to LLVM-REDUCE(1) — LLVM’s llvm-reduce page, aka the LLVM automatic testcase reducer. ✨

🌸 SYNOPSIS 🌸

llvm-reduce [options] [input...]

🦋 DESCRIPTION 🦋

The llvm-reduce tool project is literally here to reduce the size of LLVM test cases. 💅 It works by removing redundant or unnecessary code from LLVM test cases while still preserving their ability to detect bugs. no cap, that’s the whole point.

If input is -, llvm-reduce reads from standard input. Otherwise, it will read from the specified filenames. 🫶

LLVM-Reduce is a useful tool for reducing the size and complexity of LLVM test cases, making it easier to identify and debug issues in the LLVM compiler infrastructure. iconic behavior, honestly. 🎀

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💅 GENERIC OPTIONS 💅

• --help — Display available options (--help-hidden for more). ✨
• --abort-on-invalid-reduction — Abort if any reduction results in invalid IR. 🛑
• --in-place — WARNING: This option will replace your input file with the reduced version! bestie please read that twice. 😭
• --ir-passes=<string> — A textual description of the pass pipeline, same as what’s passed to opt -passes. 🧚
• -j <uint> — Maximum number of threads to use to process chunks. Set to 1 to disable parallelism. ⚡
• --max-pass-iterations=<int> — Maximum number of times to run the full set of delta passes (default=5). 🔁
• --mtriple=<string> — Set the target triple. 🎯
• --preserve-debug-environment — Don’t disable features used for crash debugging (crash reports, llvm-symbolizer and core dumps). 🔍
• --print-delta-passes — Print list of delta passes, passable to --delta-passes as a comma separated liste. (yes, liste, that’s what the page says 😌)
• --skip-delta-passes=<string> — Delta passes to not run, separated by commas. By default, run all delta passes. 🚫
• --starting-granularity-level=<uint> — Number of times to divide chunks prior to first test. 🧩

Note : Granularity refers to the level of detail at which the reduction process operates. A lower granularity means that the reduction process operates at a more coarse-grained level, while a higher granularity means that it operates at a more fine-grained level. 💭

• --test=<string> — Name of the interesting-ness test to be run. 🧪
• --test-arg=<string> — Arguments passed onto the interesting-ness test. 📝
• --verbose — Print extra debugging information. 🔊
• --write-tmp-files-as-bitcode — Always write temporary files as bitcode instead of textual IR. 💾
• -x={ir|mir} — Input language as ir or mir. 🌐

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🎀 EXIT STATUS 🎀

llvm-reduce returns 0 under normal operation. It returns a non-zero exit code if there were any errors. fr fr, that’s the whole vibe check. 💀

🌈 AUTHOR 🌈

Maintained by the LLVM Team (https://llvm.org/). 🫶

👑 COPYRIGHT 👑

2003-2023, LLVM Project 🎀

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that’s the page, bestie — signed LLVM-REDUCE(1), source/version 17, dated 2023-12-01, mwah 💋🌸