bd870a9d6c
We weren't using the "union" cargo feature for the smallvec crate, which reduces the size of a SmallVec by one machine word. This feature requires Rust 1.49 but we already require much newer versions. When using Wasmtime to compile pulldown-cmark from Sightglass, this saves a decent amount of memory allocations and writes. According to `valgrind --tool=dhat`: - 6.2MiB (3.69%) less memory allocated over the program's lifetime - 0.5MiB (4.13%) less memory allocated at maximum heap size - 5.5MiB (1.88%) fewer bytes written to - 0.44% fewer instructions executed Sightglass reports a statistically significant runtime improvement too: compilation :: cycles :: benchmarks/pulldown-cmark/benchmark.wasm Δ = 24379323.60 ± 20051394.04 (confidence = 99%) shrink-abiarg-0406da67c.so is 1.01x to 1.13x faster than main-be690a468.so! [227506364 355007998.78 423280514] main-be690a468.so [227686018 330628675.18 406025344] shrink-abiarg-0406da67c.so compilation :: cycles :: benchmarks/spidermonkey/benchmark.wasm Δ = 360151622.56 ± 278294316.90 (confidence = 99%) shrink-abiarg-0406da67c.so is 1.01x to 1.07x faster than main-be690a468.so! [8709162212 8911001926.44 9535111576] main-be690a468.so [5058015392 8550850303.88 9282148438] shrink-abiarg-0406da67c.so compilation :: cycles :: benchmarks/bz2/benchmark.wasm Δ = 6936570.28 ± 6897696.38 (confidence = 99%) shrink-abiarg-0406da67c.so is 1.00x to 1.08x faster than main-be690a468.so! [155810934 175260571.20 234737344] main-be690a468.so [119128240 168324000.92 257451074] shrink-abiarg-0406da67c.so
23 lines
596 B
TOML
23 lines
596 B
TOML
[package]
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authors = ["The Cranelift Project Developers"]
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name = "cranelift-reader"
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version = "0.89.0"
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description = "Cranelift textual IR reader"
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license = "Apache-2.0 WITH LLVM-exception"
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documentation = "https://docs.rs/cranelift-reader"
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repository = "https://github.com/bytecodealliance/wasmtime"
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readme = "README.md"
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edition = "2021"
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[dependencies]
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cranelift-codegen = { path = "../codegen", version = "0.89.0" }
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smallvec = { version = "1.6.1", features = ["union"] }
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target-lexicon = "0.12"
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[badges]
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maintenance = { status = "experimental" }
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[features]
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default = []
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experimental_x64 = []
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