OptimizeInstructions: Optimize StructNew/ArrayNew forms #6495
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kripken
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Apr 23, 2024
…w_with_default (#6523) Before we preferred not to add default values, as that increases code size. But since #6495 we turn more things into struct.new_with default, so it is important to handle this. It seems likely that in most cases the code size downside of adding default values is offset by avoiding a local.set later, so always do this (rather than add some kind of heuristic).
kripken
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May 15, 2024
…quality test (#6596) This existed before #6495 but became noticeable there. We only looked at the fallthrough values in the later part of areConsecutiveInputsEqual, but there can be invalidation due to the non-fallthrough part: (i32.add (local.get $x) (block (local.set $x ..) (local.get $x) ) ) The set can cause the local.get to differ the second time. To fix this, check if the non-fallthrough part invalidates the fallthrough (but only on the right hand side). Fixes #6593
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struct.newwith default values can bestruct.new_default.array.newwith default values can bearray.new_default.array.newof size 1 should bearray.new_fixed(saves the Const).array.new_fixedwith default values can bearray.new_default.array.new_fixedwith equal but non-default values can bearray.new(basically use a Const to say how many copies we want, rather than copy).