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Issues list

Optimise simple tuple extraction area:desugar Desugaring happens after parsing but before typing, see desugar.scala itype:performance
#23224 opened May 21, 2025 by noti0na1
1
quote pattern match too slow compared to low-level api area:metaprogramming:quotes Issues related to quotes and splices itype:performance stat:needs info stat:needs minimization Needs a self contained minimization
#22432 opened Jan 22, 2025 by xuwei-k
1
case class overriding a type causes sbt component used by compiler to throw stack overflow itype:bug itype:performance stat:needs fix upstream Progress on ticket needs a fix in an upstream dependency.
#22026 opened Nov 26, 2024 by tribbloid
5
Slow performance in a combination of features area:infer area:typer backlog No work planned on this by the core team for the time being. help wanted itype:enhancement itype:performance stat:needs minimization Needs a self contained minimization
#18763 opened Oct 25, 2023 by kubukoz
1
10
TupleMirror inflates bundle size for Scala.JS area:scala.js area:tuples itype:performance
#16013 opened Sep 9, 2022 by strelec
3
Inlining an extension method produces bad bytecode area:inline area:opaque-types itype:performance
#15585 opened Jul 4, 2022 by strelec
3
very slow compiles on large ADT with pattern matches area:typer itype:performance
#14224 opened Jan 6, 2022 by fommil
2
Emit more efficient code for simple for-comprehensions itype:enhancement itype:performance
#8880 opened May 4, 2020 by danlehmann
30
Optimize bytecode generation for synchronized methods area:transform itype:performance prio:low
#5933 opened Feb 15, 2019 by smarter
Investigate changes to the trait encoding that could improve (cold) performance area:benchmarks area:transform exp:expert itype:performance prio:low
#5928 opened Feb 15, 2019 by smarter
1
Enum ordinals -> tableswitch area:backend itype:performance
#5537 opened Nov 28, 2018 by tpolecat
5
Generate more efficient code when pattern matching on a tuple area:pattern-matching itype:performance
#4783 opened Jul 10, 2018 by smarter
Slow memory leak in Dotty's parser itype:performance
#1584 opened Oct 12, 2016 by Blaisorblade
24
ProTip! Updated in the last three days: updated:>2025-05-25.