Implement liveness analysis #229
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zherczeg
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Implement live variable analysis for function parameters, variables and constants. Define the range from start to end offset where a variable is used and allocate space for used variables. Also define which variables need to be cleared before use. Move constant values to a lower offset on the stack if possibles. Signed-off-by: Adam Laszlo Kulcsar <kuladam@inf.u-szeged.hu>
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With this patch I aim to optimize Walrus stack useage. This patch does not run without errors yet. Currently, there is a variable pushed down the stack for each local variable.
My idea is to analyse the Bytecode and get the maximum amount of variables the code needs at one point and only push down the stack that given number of variables.
The patch is still in draft, I am just curious about things I might have missed or done better! There are definitly parts that can be optimized, which I will try to once I get the patch running properly.