JIT: Optimize memory usage by rewriting jump table immediately #1927
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pguyot
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Signed-off-by: Paul Guyot <[email protected]>
Use a cache to remember tail calls that were already implemented and replace further implementations of the same tail call with a jump to the previous implementation. Coverage shows that all cases are covered in libs/estdlib/src and libs/jit/src: OP_RETURN: 50 misses, 1735 hits (97%) OP_JUMP/OP_CALL_LAST/OP_CALL_ONLY: 656 misses, 389 hits (37%) OP_CALL_LAST: 220 misses, 206 hits (48%) OP_FUNC_INFO: 58 misses, 1619 hits (97%) Signed-off-by: Paul Guyot <[email protected]>
Signed-off-by: Paul Guyot <[email protected]>
Signed-off-by: Paul Guyot <[email protected]>
This is required as flash chips are programmed by setting bits from 1 to 0, and erased by setting all bits to 0, so placeholders set to FF can be replaced without erasing a whole block. Signed-off-by: Paul Guyot <[email protected]>
Signed-off-by: Paul Guyot <[email protected]>
Signed-off-by: Paul Guyot <[email protected]>
Signed-off-by: Paul Guyot <[email protected]>
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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