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py: Replace POP_BLOCK and POP_EXCEPT opcodes with POP_EXCEPT_JUMP.

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POP_BLOCK and POP_EXCEPT are now the same, and are always followed by a
JUMP.  So this optimisation reduces code size, and RAM usage of bytecode by
two bytes for each try-except handler.
This commit is contained in:
Damien George
2019-02-15 12:18:59 +11:00
parent 6f9e3ff719
commit 5a2599d962
11 changed files with 35 additions and 65 deletions
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12
tests/cmdline/cmd_showbc.py.exp
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@@ -257,13 +257,11 @@ Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
\\d\+ JUMP \\d\+
\\d\+ LOAD_FAST 0
\\d\+ POP_JUMP_IF_TRUE \\d\+
\\d\+ POP_BLOCK
\\d\+ JUMP \\d\+
\\d\+ POP_EXCEPT_JUMP \\d\+
\\d\+ POP_TOP
\\d\+ LOAD_DEREF 14
\\d\+ POP_TOP
\\d\+ POP_EXCEPT
\\d\+ JUMP \\d\+
\\d\+ POP_EXCEPT_JUMP \\d\+
\\d\+ END_FINALLY
\\d\+ LOAD_CONST_NONE
\\d\+ LOAD_FAST 1
@@ -272,11 +270,9 @@ Raw bytecode (code_info_size=\\d\+, bytecode_size=\\d\+):
\\d\+ JUMP \\d\+
\\d\+ SETUP_EXCEPT \\d\+
\\d\+ UNWIND_JUMP \\d\+ 1
\\d\+ POP_BLOCK
\\d\+ JUMP \\d\+
\\d\+ POP_EXCEPT_JUMP \\d\+
\\d\+ POP_TOP
\\d\+ POP_EXCEPT
\\d\+ JUMP \\d\+
\\d\+ POP_EXCEPT_JUMP \\d\+
\\d\+ END_FINALLY
\\d\+ LOAD_FAST 0
\\d\+ POP_JUMP_IF_TRUE \\d\+