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This commit is contained in:
Irmen de Jong
2022-07-03 14:44:04 +02:00
parent fee58e98c5
commit beea6bc794
2 changed files with 21 additions and 12 deletions
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11
codeGenVirtual/src/prog8/codegen/virtual/VmPeepholeOptimizer.kt
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@@ -41,12 +41,13 @@ internal class VmPeepholeOptimizer(private val vmprog: AssemblyProgram, private
var changed = false
indexedInstructions.forEach { (idx, ins) ->
// TODO: detect multiple loads to the same target, only keep first
// TODO: detect multiple stores to the same target, only keep first
// TODO: detect multiple ffrom/fto to the same target, only keep first
// TODO: detect multiple loads to the same target registers, only keep first (if source is not I/O memory)
// TODO: detect multiple stores to the same target, only keep first (if target is not I/O memory)
// TODO: detect multiple float ffrom/fto to the same target, only keep first
// TODO: detect multiple sequential rnd with same reg1, only keep one
// TODO: double same xors/nots/negs, remove the pair completely as they cancel out
// TODO: multiple same ands, ors, only keep first
// TODO: detect subsequent same xors/nots/negs, remove the pairs completely as they cancel out
// TODO: detect multiple same ands, ors; only keep first
// ...
}
return changed
}