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[JS IR DCE] Add CLI option to print reachability info

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This commit is contained in:
Zalim Bashorov
2020-01-10 18:43:57 +03:00
parent 16cd3f0cef
commit 2a7e32d3ae
5 changed files with 23 additions and 33 deletions
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compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/Dce.kt
+7 -5
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@@ -19,10 +19,9 @@ import org.jetbrains.kotlin.ir.util.*
import org.jetbrains.kotlin.ir.visitors.IrElementVisitorVoid
import org.jetbrains.kotlin.ir.visitors.acceptChildrenVoid
import org.jetbrains.kotlin.ir.visitors.acceptVoid
import org.jetbrains.kotlin.js.config.JSConfigurationKeys
import java.util.*
private val PRINT_REACHABILITY_INFO = java.lang.Boolean.getBoolean("kotlin.js.ir.dce.print.reachability.info")
fun eliminateDeadDeclarations(
module: IrModuleFragment,
context: JsIrBackendContext,
@@ -99,7 +98,10 @@ private fun removeUselessDeclarations(module: IrModuleFragment, usefulDeclaratio
}
fun usefulDeclarations(roots: Iterable<IrDeclaration>, context: JsIrBackendContext): Set<IrDeclaration> {
val reachabilityInfo: MutableSet<String> = if (PRINT_REACHABILITY_INFO) linkedSetOf() else Collections.emptySet()
val printReachabilityInfo =
context.configuration.getBoolean(JSConfigurationKeys.PRINT_REACHABILITY_INFO) ||
java.lang.Boolean.getBoolean("kotlin.js.ir.dce.print.reachability.info")
val reachabilityInfo: MutableSet<String> = if (printReachabilityInfo) linkedSetOf() else Collections.emptySet()
val queue = ArrayDeque<IrDeclaration>()
val result = hashSetOf<IrDeclaration>()
@@ -116,7 +118,7 @@ fun usefulDeclarations(roots: Iterable<IrDeclaration>, context: JsIrBackendConte
return
}
if (PRINT_REACHABILITY_INFO) {
if (printReachabilityInfo) {
val fromFqn = (from as? IrDeclarationWithName)?.fqNameWhenAvailable?.asString() ?: altFromFqn ?: "<unknown>"
val toFqn = (this as? IrDeclarationWithName)?.fqNameWhenAvailable?.asString() ?: "<unknown>"
@@ -342,7 +344,7 @@ fun usefulDeclarations(roots: Iterable<IrDeclaration>, context: JsIrBackendConte
}
}
if (PRINT_REACHABILITY_INFO) {
if (printReachabilityInfo) {
reachabilityInfo.forEach(::println)
}