WABT(1)

💖 WABT — wasm-opcodecnt 💖

okay bestie, so you found your way into the WABT manual (that's the WebAssembly Binary Toolkit, the whole iconique family) and specifically into the page for wasm-opcodecnt. this one is a little stats goblin and honestly? she eats. let's get into it 🎀

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✨ NAME ✨

wasm-opcodecnt — literally just counts how many times each opcode shows up in your instructions. that's the whole job. she's a counter. she's counting. 💅

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🌸 SYNOPSIS 🌸

wasm-opcodecnt [options] file ...

yep, that's it. options first, then one or more files, and she'll do her thing. ✨

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🦋 DESCRIPTION 🦋

So here's the vibe: wasm-opcodecnt reads a file in the wasm binary format and counts opcode usage for instructions. Like, for every instruction she bumps a tally, and then she shows you the receipts. main character behaviour, fr fr. 💖

the options are as follows, and yes we're doing all of them, no skipping, that's the rules:

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💅 OPTIONS 💅

• --help — prints a help message. the "hi bestie what do you need" of flags. 🫶
• --version — prints version information. show her some ID please. 👑
• -v, --verbose — use it multiple times for more info. stack it up, the more -v the more tea. ☕
• --enable-exceptions — enables Experimental exception handling. 🚨
• --disable-mutable-globals — disables Import/export mutable globals.
• --disable-saturating-float-to-int — disables Saturating float-to-int operators.
• --disable-sign-extension — disables Sign-extension operators.
• --disable-simd — disables SIMD support.
• --enable-threads — enables Threading support. 🧵
• --enable-function-references — enables Typed function references.
• --disable-multi-value — disables Multi-value.
• --enable-tail-call — enables Tail-call support.
• --disable-bulk-memory — disables Bulk-memory operations.
• --disable-reference-types — disables Reference types (externref).
• --enable-annotations — enables Custom annotation syntax.
• --enable-code-metadata — enables Code metadata.
• --enable-gc — enables Garbage collection. take out the trash, slay. 🗑️✨
• --enable-memory64 — enables 64-bit memory.
• --enable-multi-memory — enables Multi-memory.
• --enable-extended-const — enables Extended constant expressions.
• --enable-all — enables all features. yes all of them. the whole buffet. 🔥
• -o, --output=FILENAME — output file for the opcode counts, by default use stdout. so if you don't pass it, she just yells the counts directly at your terminal. 💬
• -c, --cutoff=N — cutoff for reporting counts less than N. anything under N doesn't make the cut. sorry not sorry. ✂️
• -s, --separator=SEPARATOR — separator text between element and count when reporting counts. so you can make it pretty. 🎀

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🌈 EXAMPLES 🌈

okay so the example in the manual says: Parse binary file test.wasm and write pcode dist file test.dist. here's the exact move:

$ wasm-opcodecnt test.wasm -o test.dist

and boom, test.dist has your opcode counts. iconic. 💖

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⭐ SEE ALSO ⭐

go read these too, they're all family:

wasm-decompile(1), wasm-interp(1), wasm-objdump(1), wasm-strip(1), wasm-validate(1), wasm2c(1), wasm2wat(1), wast2json(1), wat-desugar(1), wat2wasm(1), spectest-interp(1)

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💀 BUGS 💀

found a bug? don't suffer in silence bestie, report it at https://github.com/WebAssembly/wabt/issues. they wanna know. 🫶

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okay and that's the whole page, no cap. this one comes from the Debian folks, version $Mdocdate$, and yeah it's WABT(1). mwah, go count some opcodes 💋🎀✨