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gccemacs

macOS

brew install libgccjit

brew --prefix libgccjit

GNU/Linux

build libgccjit

GCC_VERSION=$(gcc -dumpversion)
PREFIX="$HOME/.local/gcc-$GCC_VERSION"

git clone --depth 1 --branch releases/gcc-"$GCC_VERSION" git://gcc.gnu.org/git/gcc.git "$PREFIX/src"

cd "$PREFIX/src"

./configure \
    --enable-languages=jit \
    --enable-host-shared \
    --enable-checking=release \
    --disable-bootstrap \
    --disable-multilib \
    --prefix="$PREFIX" \
    --build="$(gcc -dumpmachine)"

make -j"$(nproc)"
make install-strip

Build using build.sh script:

Adjust paths to libgccjit

./deps.sh

CFLAGS="-O2 -I/usr/local/opt/libgccjit/include" \
LDFLAGS="-L/usr/local/opt/libgccjit/lib/gcc/10" \
LD_LIBRARY_PATH="/usr/local/opt/libgccjit/lib/gcc/10" \
FEATURES="--with-nativecomp" \
BYTE_COMPILE_EXTRA_FLAGS='--eval "(setq comp-speed 3)"' \
  ./build.sh -B feature/native-comp -c -b -i

Use NATIVE_FULL_AOT=1 for full AOT compilation

You might want to add this to your init.el

(setq comp-speed 3
      comp-deferred-compilation t)
image not found

emacs: dlopen(...eln-cache..., 1): image not found

cd ./Emacs.app/Contents/
ln -s ./MacOS/libexec/emacs/VER/ARCH/eln-cache eln-cache

Benchmarks (macOS Big Sur)

https://elpa.gnu.org/packages/elisp-benchmarks.html

./emacs -batch -l ~/.emacs.d/data/packages/elisp-benchmarks-1.8/elisp-benchmarks.el --eval '(progn (setq comp-speed 3) (elisp-benchmarks-run))' -Q

master (0a5a1adab986de39a147771b8f9aa21656ecc001)

test non-gc avg (s) gc avg (s) gcs avg tot avg (s) tot avg err (s)
bubble-no-cons 5.38 0.05 4 5.42 0.01
bubble 2.19 5.35 485 7.54 0.02
dhrystone 5.58 0.00 0 5.58 0.02
fibn-rec 4.61 0.00 0 4.61 0.12
fibn-tc 4.27 0.00 0 4.27 0.07
fibn 6.32 0.00 0 6.32 0.02
flet 6.96 0.00 0 6.96 0.07
inclist-type-hints 8.06 0.01 1 8.07 0.07
inclist 6.72 0.01 1 6.74 0.62
listlen-tc 3.91 0.00 0 3.91 0.01
map-closure 6.48 0.00 0 6.48 0.06
nbody 2.36 9.92 899 12.28 0.02
pcase 6.32 0.00 0 6.32 0.03
pidigits 5.96 8.58 457 14.54 0.39
-------------------- ---------------- ------------ --------- ------------- -----------------
total 75.11 23.92 1847 99.03 0.76

feature/native-comp (323200044f0c3f716f8f78a6f5e39349fe039117)

test non-gc avg (s) gc avg (s) gcs avg tot avg (s) tot avg err (s)
bubble-no-cons 2.21 0.01 1 2.23 0.01
bubble 1.42 0.14 1 1.56 0.03
dhrystone 2.54 0.00 0 2.54 0.04
fibn-rec 0.00 0.00 0 0.00 0.00
fibn-tc 0.01 0.00 0 0.01 0.00
fibn 0.00 0.00 0 0.00 0.00
flet 1.99 0.00 0 1.99 0.01
inclist-type-hints 0.71 0.00 0 0.71 0.02
inclist 1.35 0.00 0 1.35 0.01
listlen-tc 0.14 0.00 0 0.14 0.00
map-closure 6.35 0.00 0 6.35 0.05
nbody 1.49 0.30 1 1.78 0.02
pcase 1.79 0.00 0 1.79 0.01
pidigits 11.49 3.14 1 14.62 0.07
-------------------- ---------------- ------------ --------- ------------- -----------------
total 31.48 3.59 4 35.08 0.10