55 Commits

Author	SHA1	Message	Date
Raymond Hettinger	dd80f76265	SF patch #910929: Optimize list comprehensions ... Add a new opcode, LIST_APPEND, and apply it to the code generation for list comprehensions. Reduces the per-loop overhead by about a third.	2004-03-07 07:31:06 +00:00
Walter Dörwald	70a6b49821	Replace backticks with repr() or "%r" ... From SF patch #852334.	2004-02-12 17:35:32 +00:00
Raymond Hettinger	f4cf76dd5e	Revert the previous enhancement to the bytecode optimizer. ... The additional code complexity and new NOP opcode were not worth it.	2003-04-24 05:45:23 +00:00
Raymond Hettinger	060641d511	Improved the bytecode optimizer. ... * Can now test for basic blocks. * Optimize inverted comparisions. * Optimize unary_not followed by a conditional jump. * Added a new opcode, NOP, to keep code size constant. * Applied NOP to previous transformations where appropriate. Note, the NOP would not be necessary if other functions were added to re-target jump addresses and update the co_lnotab mapping. That would yield slightly faster and cleaner bytecode at the expense of optimizer simplicity and of keeping it decoupled from the line-numbering structure.	2003-04-22 06:49:11 +00:00
Skip Montanaro	3249ccd06a	new opcode module - extract opcode definitions from dis.py - eventually ... should be generated automatically	2003-02-27 21:27:52 +00:00