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py: Change jump-if-x-or-pop opcodes to have unsigned offset argument.

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These jumps are always forwards, and it's more efficient in the VM to
decode an unsigned argument.  These opcodes are already optimised versions
of the sequence "dup-top pop-jump-if-x pop" so it doesn't hurt generality
to optimise them further.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2022-03-21 16:36:13 +11:00
parent acd2c5c834
commit 6d11c69983
5 changed files with 11 additions and 13 deletions
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6
tools/mpy-tool.py
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@@ -246,8 +246,8 @@ class Opcodes:
MP_BC_JUMP = (MP_BC_BASE_JUMP_E + 0x02) # signed relative bytecode offset
MP_BC_POP_JUMP_IF_TRUE = (MP_BC_BASE_JUMP_E + 0x03) # signed relative bytecode offset
MP_BC_POP_JUMP_IF_FALSE = (MP_BC_BASE_JUMP_E + 0x04) # signed relative bytecode offset
MP_BC_JUMP_IF_TRUE_OR_POP = (MP_BC_BASE_JUMP_E + 0x05) # signed relative bytecode offset
MP_BC_JUMP_IF_FALSE_OR_POP = (MP_BC_BASE_JUMP_E + 0x06) # signed relative bytecode offset
MP_BC_JUMP_IF_TRUE_OR_POP = (MP_BC_BASE_JUMP_E + 0x05) # unsigned relative bytecode offset
MP_BC_JUMP_IF_FALSE_OR_POP = (MP_BC_BASE_JUMP_E + 0x06) # unsigned relative bytecode offset
MP_BC_SETUP_WITH = (MP_BC_BASE_JUMP_E + 0x07) # unsigned relative bytecode offset
MP_BC_SETUP_EXCEPT = (MP_BC_BASE_JUMP_E + 0x08) # unsigned relative bytecode offset
MP_BC_SETUP_FINALLY = (MP_BC_BASE_JUMP_E + 0x09) # unsigned relative bytecode offset
@@ -295,8 +295,6 @@ class Opcodes:
MP_BC_JUMP,
MP_BC_POP_JUMP_IF_TRUE,
MP_BC_POP_JUMP_IF_FALSE,
MP_BC_JUMP_IF_TRUE_OR_POP,
MP_BC_JUMP_IF_FALSE_OR_POP,
)
# Create a dict mapping opcode value to opcode name.