Search results

Pathological (effectively non-terminating) compilation times of quote-matching multiple types

area:match-types

area:metaprogramming:quotesIssues related to quotes and splicesIssues related to quotes and splices

itype:bug

itype:performance

Status: Open.

#23317 In scala/scala3;

· TomasMikula opened on Jun 4, 2025

Performance concern regarding NumericRange.contains

area:libraryStandard libraryStandard library

itype:performance

Status: Open.

#23285 In scala/scala3;

· klaeufer opened on May 29, 2025

JEP: Classifier API to Map Finite Sets to Indexes

compat:java:jepIssues corresponding to a JEP (JDK Enhancement Proposal)Issues corresponding to a JEP (JDK Enhancement Proposal)

compat:java:jep:unstableIssues corresponding to a JEP (JDK Enhancement Proposal) which is not stable yet.Issues corresponding to a JEP (JDK Enhancement Proposal) which is not stable yet.

itype:performance

Status: Open.

#23264 In scala/scala3;

· He-Pin opened on May 25, 2025

Optimise simple tuple extraction

area:desugarDesugaring happens after parsing but before typing, see desugar.scalaDesugaring happens after parsing but before typing, see desugar.scala

itype:performance

Status: Open.

#23224 In scala/scala3;

· noti0na1 opened on May 21, 2025

quote pattern match too slow compared to low-level api

area:metaprogramming:quotesIssues related to quotes and splicesIssues related to quotes and splices

itype:performance

stat:needs info

stat:needs minimizationNeeds a self contained minimizationNeeds a self contained minimization

Status: Open.

#22432 In scala/scala3;

· xuwei-k opened on Jan 22, 2025

case class overriding a type causes sbt component used by compiler to throw stack overflow

itype:bug

itype:performance

stat:needs fix upstreamProgress on ticket needs a fix in an upstream dependency.Progress on ticket needs a fix in an upstream dependency.

Status: Open.

#22026 In scala/scala3;

· tribbloid opened on Nov 26, 2024

Slow performance in a combination of features

area:infer

area:typer

backlogNo work planned on this by the core team for the time being.No work planned on this by the core team for the time being.

help wanted

itype:enhancement

itype:performance

stat:needs minimizationNeeds a self contained minimizationNeeds a self contained minimization

Status: Open.

#18763 In scala/scala3;

· kubukoz opened on Oct 25, 2023

TupleMirror inflates bundle size for Scala.JS

area:scala.js

area:tuples

itype:performance

Status: Open.

#16013 In scala/scala3;

· strelec opened on Sep 9, 2022

Inlining an extension method produces bad bytecode

area:inline

area:opaque-types

itype:performance

Status: Open.

#15585 In scala/scala3;

· strelec opened on Jul 4, 2022

very slow compiles on large ADT with pattern matches

area:typer

itype:performance

Status: Open.

#14224 In scala/scala3;

· fommil opened on Jan 6, 2022

Emit more efficient code for simple for-comprehensions

itype:enhancement

itype:performance

Status: Open.

#8880 In scala/scala3;

· danlehmann opened on May 4, 2020

Optimize bytecode generation for synchronized methods

area:transform

itype:performance

prio:low

Status: Open.

#5933 In scala/scala3;

· smarter opened on Feb 15, 2019