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

Fix performance regression in NI by fixing totally incorrect hashCode

Browse Source 
The actual problem was introduced in 4f1e85b468, note how `hashCode` is implemented:
```
var currentHashCode = cachedHashCode
if (currentHashCode == 0) return currentHashCode
...
```
It's a silly bug, there should be check `if (currentHashCode != 0) ...` because `0` is used a marker for "uncomputed value".

Now, in the commit 0219b86d06 I added map with `KotlinType` as a key and because of constant `hash` for `KotlinType`, we basically got `List` instead of `Map`, which caused this performance regression

 #KT-34063 Fixed
This commit is contained in:
Mikhail Zarechenskiy
2019-09-30 02:04:39 +03:00
parent 957af741cd
commit 932d84d568
8 changed files with 212 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/testData/diagnostics/tests/inference/commonSystem/manyArgumentsForVararg.kt
Vendored
+178
View File
@@ -0,0 +1,178 @@
// !LANGUAGE: +NewInference
// !DIAGNOSTICS: -UNUSED_PARAMETER
val prop = mapOf(
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b"),
to("a", "b")
)
fun <A, B> to(a: A, b: B): Pair<A, B> = TODO()
fun <K, V> mapOf(vararg pairs: Pair<K, V>): Map<K, V> = TODO()
class Pair<out A, out B>
compiler/testData/diagnostics/tests/inference/commonSystem/manyArgumentsForVararg.txt
Vendored
+12
View File
@@ -0,0 +1,12 @@
package
public val prop: kotlin.collections.Map<kotlin.String, kotlin.String>
public fun </*0*/ K, /*1*/ V> mapOf(/*0*/ vararg pairs: Pair<K, V> /*kotlin.Array<out Pair<K, V>>*/): kotlin.collections.Map<K, V>
public fun </*0*/ A, /*1*/ B> to(/*0*/ a: A, /*1*/ b: B): Pair<A, B>
public final class Pair</*0*/ out A, /*1*/ out B> {
public constructor Pair</*0*/ out A, /*1*/ out B>()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}