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Optimize vtable building [KT-40652]

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This commit is contained in:
Elena Lepilkina
2020-08-07 11:36:31 +03:00
committed by LepilkinaElena
parent 4f725387ff
commit b57b81afa8
1 changed files with 22 additions and 12 deletions
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backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/descriptors/ClassLayoutBuilder.kt
+22 -12
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@@ -286,6 +286,7 @@ internal class ClassLayoutBuilder(val irClass: IrClass, val context: Context, va
val methods = irClass.sortedOverridableOrOverridingMethods
val newVtableSlots = mutableListOf<OverriddenFunctionInfo>()
val overridenVtableSlots = mutableMapOf<IrSimpleFunction, OverriddenFunctionInfo>()
DEBUG_OUTPUT(0) {
println()
@@ -300,19 +301,28 @@ internal class ClassLayoutBuilder(val irClass: IrClass, val context: Context, va
println("BUILDING INHERITED vTable")
}
val superVtableMap = superVtableEntries.groupBy { it.function }
methods.forEach { overridingMethod ->
overridingMethod.allOverriddenFunctions.forEach {
val superMethods = superVtableMap[it]
if (superMethods?.isNotEmpty() == true) {
newVtableSlots.add(OverriddenFunctionInfo(overridingMethod, it))
superMethods.forEach { superMethod ->
overridenVtableSlots[superMethod.overriddenFunction] =
OverriddenFunctionInfo(overridingMethod, superMethod.overriddenFunction)
}
}
}
}
val inheritedVtableSlots = superVtableEntries.map { superMethod ->
val overridingMethod = methods.singleOrNull { it.overrides(superMethod.function) }
if (overridingMethod == null) {
DEBUG_OUTPUT(0) { println("Taking super ${superMethod.overriddenFunction.render()} -> ${superMethod.function.render()}") }
superMethod
} else {
newVtableSlots.add(OverriddenFunctionInfo(overridingMethod, superMethod.function))
DEBUG_OUTPUT(0) { println("Taking overridden ${superMethod.overriddenFunction.render()} -> ${overridingMethod.render()}") }
OverriddenFunctionInfo(overridingMethod, superMethod.overriddenFunction)
overridenVtableSlots[superMethod.overriddenFunction]?.also {
DEBUG_OUTPUT(0) {
println("Taking overridden ${superMethod.overriddenFunction.render()} -> ${it.function.render()}")
}
} ?: superMethod.also {
DEBUG_OUTPUT(0) {
println("Taking super ${superMethod.overriddenFunction.render()} -> ${superMethod.function.render()}")
}
}
}