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JVM don't optimize if there are too many data on exception edges

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This commit is contained in:
Dmitry Petrov
2021-07-20 18:39:42 +03:00
committed by teamcityserver
parent c1a5ce6e61
commit ca84aa4f2c
1 changed files with 18 additions and 13 deletions
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compiler/backend/src/org/jetbrains/kotlin/codegen/optimization/OptimizationMethodVisitor.kt
+18 -13
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@@ -73,24 +73,29 @@ class OptimizationMethodVisitor(
companion object {
private const val MEMORY_LIMIT_BY_METHOD_MB = 50
private const val TRY_CATCH_BLOCKS_LIMIT = 512
private const val TRY_CATCH_BLOCKS_SOFT_LIMIT = 16
fun canBeOptimized(node: MethodNode): Boolean {
if (node.tryCatchBlocks.size > TRY_CATCH_BLOCKS_LIMIT)
return false
val totalFramesSizeMb = node.instructions.size() * (node.maxLocals + node.maxStack) / (1024 * 1024)
return totalFramesSizeMb < MEMORY_LIMIT_BY_METHOD_MB
if (node.tryCatchBlocks.size > TRY_CATCH_BLOCKS_SOFT_LIMIT) {
if (getTotalFramesWeight(getTotalTcbSize(node), node) > MEMORY_LIMIT_BY_METHOD_MB)
return false
}
return getTotalFramesWeight(node.instructions.size(), node) < MEMORY_LIMIT_BY_METHOD_MB
}
fun canBeOptimizedUsingSourceInterpreter(node: MethodNode): Boolean {
if (node.tryCatchBlocks.size > TRY_CATCH_BLOCKS_LIMIT)
return false
val frameSize = node.maxLocals + node.maxStack
val methodSize = node.instructions.size().toLong()
val totalFramesSizeMb = methodSize * methodSize * frameSize / (1024 * 1024)
return totalFramesSizeMb < MEMORY_LIMIT_BY_METHOD_MB
val methodSize = node.instructions.size()
if (node.tryCatchBlocks.size > TRY_CATCH_BLOCKS_SOFT_LIMIT) {
if (getTotalFramesWeight(getTotalTcbSize(node) * methodSize, node) > MEMORY_LIMIT_BY_METHOD_MB)
return false
}
return getTotalFramesWeight(methodSize * methodSize, node) < MEMORY_LIMIT_BY_METHOD_MB
}
private fun getTotalFramesWeight(size: Int, node: MethodNode) =
size.toLong() * (node.maxLocals + node.maxStack) / (1024 * 1024)
private fun getTotalTcbSize(node: MethodNode) =
node.tryCatchBlocks.sumOf { node.instructions.indexOf(it.end) - node.instructions.indexOf(it.start) }
}
}