azalea/kotlin-fork
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Do not spill fake variables

Browse Source 
#KT-28309
This commit is contained in:
Ilmir Usmanov
2018-12-12 20:18:07 +03:00
parent ab472793ed
commit 666fec41b9
1 changed files with 10 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/backend/src/org/jetbrains/kotlin/codegen/coroutines/CoroutineTransformerMethodVisitor.kt
+10 -2
View File
@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.codegen.optimization.transformer.MethodTransformer
import org.jetbrains.kotlin.config.LanguageVersionSettings
import org.jetbrains.kotlin.config.isReleaseCoroutines
import org.jetbrains.kotlin.diagnostics.DiagnosticSink
import org.jetbrains.kotlin.load.java.JvmAbi
import org.jetbrains.kotlin.psi.KtElement
import org.jetbrains.kotlin.resolve.jvm.AsmTypes
import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm
@@ -496,6 +497,12 @@ class CoroutineTransformerMethodVisitor(
val frames = performRefinedTypeAnalysis(methodNode, containingClassInternalName)
fun AbstractInsnNode.index() = instructions.indexOf(this)
fun Int.isInlinerFakeVariable(index: Int) = methodNode.localVariables.any {
(it.name.startsWith(JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_ARGUMENT) || it.name.startsWith(JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_FUNCTION))
&& it.index == this
&& it.start.index() <= index && index <= it.end.index()
}
// We postpone these actions because they change instruction indices that we use when obtaining frames
val postponedActions = mutableListOf<() -> Unit>()
val maxVarsCountByType = mutableMapOf<Type, Int>()
@@ -537,8 +544,9 @@ class CoroutineTransformerMethodVisitor(
// k + 2 - exception
val variablesToSpill =
(0 until localsCount)
.filter { it !in setOf(continuationIndex, dataIndex, exceptionIndex) }
.map { Pair(it, frame.getLocal(it)) }
.filterNot {
it in setOf(continuationIndex, dataIndex, exceptionIndex) || it.isInlinerFakeVariable(suspensionCallBegin.index())
}.map { Pair(it, frame.getLocal(it)) }
.filter { (index, value) ->
(index == 0 && needDispatchReceiver && isForNamedFunction) ||
(value != StrictBasicValue.UNINITIALIZED_VALUE && livenessFrame.isAlive(index))