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Add perm_var_cond_block rule #160

Draft

twevs wants to merge 1 commit into simonlindholm:main from twevs:perm_var_cond_block

twevs commented Apr 3, 2023 •

edited

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This helps with useless moves emitted by gcc 2.8.1 by turning

[statements]

into

if (variable)
{
    [statements]
}
else
{
    [statements]
}

Examples:
https://decomp.me/scratch/hQYzv -> https://decomp.me/scratch/LJdek
https://decomp.me/scratch/U0w1R -> https://decomp.me/scratch/S9QUe

Marking this as a draft for now as the code to generate if (variable1 || variable2) by trying to weed out duplicate expressions doesn't yet work.


          Added perm_var_cond_block rule.

d17cb97

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