LSL-PyOptimizer/unit_tests/coverage.suite/jump-opt.skp at master - AriasCreations/LSL-PyOptimizer - zontreck's code

AriasCreations/LSL-PyOptimizer

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Sei Lisa 5bfb218505 Perform redundant jump elimination in lastpass

This is a first try at redundant jump removal (jumps that target the very next instruction). It's too basic in several ways.

- The statement is replaced by a ';' instead of removed.
- If the jump was the only statement in an if, when the if becomes empty, it's not folded.
- Jumps that are last in the 'then' branch of if+else are not visible. This would need either to track multiple last statements, or to have some means to anticipate what the next statement is at every statement. A Control Flow Graph would help a lot.
- When a label is immediately followed by a jump, all jumps to that label should target the destination of that jump if it's in scope. Added to TODO.
- It misses some optimizations when not expanding WHILE and FOR into IF/JUMP.

Moving everything to an earlier stage would help with some of these, especially with ';' and 'if' folding. Unconditionally expanding WHILE and FOR would also help.

2019-01-06 22:32:19 +01:00

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This optimization is not implemented.