JIT: optimize op_return by not always returning to VM #1838
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
pguyot
force-pushed
the
w39/optimize_op_return
branch
5 times, most recently
from
e85b52b to
a7d75a7
Compare
pguyot
force-pushed
the
w39/optimize_op_return
branch
3 times, most recently
from
a5d7ad3 to
04f4c63
Compare
pguyot
force-pushed
the
w39/optimize_op_return
branch
3 times, most recently
from
f3e67bc to
481c11c
Compare
pguyot
force-pushed
the
w39/optimize_op_return
branch
from
481c11c to
4e7c382
Compare
This was referenced Oct 19, 2025
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
pguyot
force-pushed
the
w39/optimize_op_return
branch
from
4e7c382 to
100d522
Compare
bettio
approved these changes
Oct 23, 2025
bettio
added a commit
that referenced
this pull request
Oct 25, 2025
…tforms-with-3-operands JIT: optimize shift right for platforms with 3 operands Continuation of #1838 These changes are made under both the "Apache 2.0" and the "GNU Lesser General Public License 2.1 or later" license terms (dual license). SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later
bettio
added a commit
that referenced
this pull request
Nov 6, 2025
Embedded JIT mode for Pico Continuation of: - #1829 - #1838 - #1881 - #1891 - #1893 - #1900 - #1901 - #1903 - #1907 Add the ability to perform just in time compilation directly on Raspberry Pi Pico. Erlang bytecode is compiled to armv6m on the first run and directly executed on subsequent runs. In this PR, the native code compilation does not take advantage of being done on the device, it still generates position independent code. If Erlang modules include `Type` chunk, the same optimizations that happen on the desktop with precompilation could be done on the Pico, however current release (0.7.5) of [`packbeam`](https://github.com/atomvm/atomvm_packbeam) prunes the `Type` chunk. Just in time compilation on the Pico is achieved by: - Adding a flush call after JIT is performed, which is noop on all platforms except on armv6m where we flush the literal pool (normally a noop, though, as the pool should have been flushed earlier). - Updating avm API to fetch the last section named end. - Adding a `jit_stream_flash` for RP2 platform and adding a cache native code mechanism that rely on the avm end section on RP2 to find out where to flash jit code (after the last end) and detect if avm were updated. These changes are made under both the "Apache 2.0" and the "GNU Lesser General Public License 2.1 or later" license terms (dual license). SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later
bettio
added a commit
that referenced
this pull request
Dec 9, 2025
Just in time compilation for riscv32 architecture Continuation of: - #1881 - #1829 - #1891 - #1838 - #1900 - #1901 - #1903 - #1981 These changes are made under both the "Apache 2.0" and the "GNU Lesser General Public License 2.1 or later" license terms (dual license). SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
op_return implementation is expensive as it's returning to VM. Optimize it if we're staying in the same module.
This yields a 4% speed increase on the prng_test from the benchmark.
These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).
SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later