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d60f7fe33f
Saves about 1.4MB from the generated wasm file. The Brotli size is basically unchanged (it's actually slightly larger, by 40K), suggesting that most of the size delta is due to not inlining and other changes that were easily compressible. However, it still seems worthwhile to have a smaller final binary, to reduce parse time and increase likelihood that we fit in the browser's disk cache. Actual performance appears to be unchanged. Updates #5142 Signed-off-by: Mihai Parparita <mihai@tailscale.com>
75 lines
2.0 KiB
Bash
Executable File
75 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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#
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# This script acts like the "wasm-opt" command from the Binaryen toolchain, but
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# uses Tailscale's currently-desired version, downloading it first if necessary.
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set -eu
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BINARYEN_DIR="$HOME/.cache/tailscale-binaryen"
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read -r BINARYEN_REV < "$(dirname "$0")/binaryen.rev"
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# This works for Linux and Darwin, which is sufficient
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# (we do not build for other targets).
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OS=$(uname -s | tr A-Z a-z)
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if [ "$OS" = "darwin" ]; then
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# Binaryen uses the name "macos".
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OS="macos"
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fi
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ARCH="$(uname -m)"
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if [ "$ARCH" = "aarch64" ]; then
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# Binaryen uses the name "arm64".
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ARCH="arm64"
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fi
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install_binaryen() {
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BINARYEN_URL="https://github.com/WebAssembly/binaryen/releases/download/version_${BINARYEN_REV}/binaryen-version_${BINARYEN_REV}-${ARCH}-${OS}.tar.gz"
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install_tool "wasm-opt" $BINARYEN_REV $BINARYEN_DIR $BINARYEN_URL
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}
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install_tool() {
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TOOL=$1
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REV=$2
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TOOLCHAIN=$3
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URL=$4
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archive="$TOOLCHAIN-$REV.tar.gz"
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mark="$TOOLCHAIN.extracted"
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extracted=
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[ ! -e "$mark" ] || read -r extracted junk <$mark
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if [ "$extracted" = "$REV" ] && [ -e "$TOOLCHAIN/bin/$TOOL" ]; then
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# Already extracted, continue silently
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return 0
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fi
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echo ""
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rm -f "$archive.new" "$TOOLCHAIN.extracted"
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if [ ! -e "$archive" ]; then
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log "Need to download $TOOL '$REV' from $URL."
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curl -f -L -o "$archive.new" $URL
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rm -f "$archive"
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mv "$archive.new" "$archive"
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fi
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log "Extracting $TOOL '$REV' into '$TOOLCHAIN'." >&2
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rm -rf "$TOOLCHAIN"
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mkdir -p "$TOOLCHAIN"
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(cd "$TOOLCHAIN" && tar --strip-components=1 -xf "$archive")
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echo "$REV" >$mark
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}
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log() {
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echo "$@" >&2
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}
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if [ "${BINARYEN_DIR}" = "SKIP" ] ||
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[ "${OS}" != "macos" -a "${OS}" != "linux" ] ||
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[ "${ARCH}" != "x86_64" -a "${ARCH}" != "arm64" ]; then
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log "Unsupported OS (${OS}) and architecture (${ARCH}) combination."
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log "Using existing wasm-opt (`which wasm-opt`)."
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exec wasm-opt "$@"
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fi
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install_binaryen
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"$BINARYEN_DIR/bin/wasm-opt" "$@"
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