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Produce cleaner bytecode for 'with' and 'async with' by generating separate code for normal and exceptional paths. (#6641)

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Remove BEGIN_FINALLY, END_FINALLY, CALL_FINALLY and POP_FINALLY bytecodes. Implement finally blocks by code duplication.
Reimplement frame.lineno setter using line numbers rather than bytecode offsets.
This commit is contained in:
Mark Shannon 2019-11-21 09:11:43 +00:00 • committed by GitHub
parent 5dcc06f6e0
commit fee552669f
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GPG key ID: 4AEE18F83AFDEB23
15 changed files with 4789 additions and 4754 deletions
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16
Python/opcode_targets.h generated
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@ -47,12 +47,12 @@ static void *opcode_targets[256] = {
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,
&&TARGET_RERAISE,
&&TARGET_WITH_EXCEPT_START,
&&TARGET_GET_AITER,
&&TARGET_GET_ANEXT,
&&TARGET_BEFORE_ASYNC_WITH,
&&TARGET_BEGIN_FINALLY,
&&_unknown_opcode,
&&TARGET_END_ASYNC_FOR,
&&TARGET_INPLACE_ADD,
&&TARGET_INPLACE_SUBTRACT,
@ -80,14 +80,14 @@ static void *opcode_targets[256] = {
&&TARGET_INPLACE_XOR,
&&TARGET_INPLACE_OR,
&&_unknown_opcode,
&&TARGET_WITH_CLEANUP_START,
&&TARGET_WITH_CLEANUP_FINISH,
&&_unknown_opcode,
&&_unknown_opcode,
&&TARGET_RETURN_VALUE,
&&TARGET_IMPORT_STAR,
&&TARGET_SETUP_ANNOTATIONS,
&&TARGET_YIELD_VALUE,
&&TARGET_POP_BLOCK,
&&TARGET_END_FINALLY,
&&_unknown_opcode,
&&TARGET_POP_EXCEPT,
&&TARGET_STORE_NAME,
&&TARGET_DELETE_NAME,
@ -161,8 +161,8 @@ static void *opcode_targets[256] = {
&&_unknown_opcode,
&&TARGET_LOAD_METHOD,
&&TARGET_CALL_METHOD,
&&TARGET_CALL_FINALLY,
&&TARGET_POP_FINALLY,
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,
&&_unknown_opcode,