Just in time compilation with armv6m target #1829
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This was referenced Oct 19, 2025
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
Signed-off-by: Paul Guyot <pguyot@kallisys.net>
bettio
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Oct 22, 2025
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…single-precision-floats JIT: add float32 variant for single precision floats Continuation of #1829 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
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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
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Continuation of:
The target is suitable for Pico, Pico2 and STM32.
Benchmark test on a Pico with SMP disabled shows a speed increase from 14% to 62%.
Remark: the current backend requires 64 bits floats. 32 bits floats would need a specific variant.
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