Issues · Glasgow Haskell Compiler / GHC · GitLab

Performance regression in for_ alternatives from GHC 8.2.2 to newer GHCs

#15717 · opened Oct 07, 2018 by Niklas Hambüchen 9.2.1 5 Pnormal Trac import bug runtime perf simplifier
- 7
updated Jan 25, 2021
Take exhaustiveness checking into consideration when using MonadFailDesugaring

#15681 · opened Sep 27, 2018 by Dmitrii Kovanikov 9.2.1 5 Pnormal Trac import bug
- 19
updated Jan 25, 2021
Valid hole fits and GADT type variable names

#15677 · opened Sep 26, 2018 by Ryan Scott 9.2.1 5 GADTs Pnormal Trac import bug error messages typed holes valid hole fits
- 5
updated Jan 25, 2021
Provide the provenance of unification variables in error messages when possible

#15678 · opened Sep 26, 2018 by Ryan Scott 9.2.1 5 Pnormal Trac import bug error messages typechecker
- 2
updated Jan 25, 2021
Use TcLevels to decide about floating out of implications

#15378 · opened Jul 14, 2018 by Richard Eisenberg 9.2.1 5 Pnormal Trac import task
- 2
updated Jan 25, 2021
When a type application cannot be applied to an identifier due to the absence of an explicit type signature, let the error just say so!

#15596 · opened Sep 03, 2018 by kindaro 9.2.1 5 Pnormal Trac import TypeApplications error messages feature request typechecker
- 3
updated Jan 25, 2021
Error message involving type families points to wrong location

#15621 · opened Sep 08, 2018 by Ryan Scott 9.2.1 5 Pnormal Trac import TypeFamilies bug error messages typechecker
- 11
updated Jan 25, 2021
Test Suite Unexpected failure for ghci062(ghci-ext)

#15644 · opened Sep 14, 2018 by Julian Leviston 9.2.1 5 Pnormal Trac import bug remote GHCi testsuite
- 2
updated Jan 25, 2021
Type/data family instances in kind checking

#12088 · opened May 19, 2016 by alexvieth 9.2.1 7 CUSKs Phigh Trac import bug feature request typechecker
- 1
- 55
updated Jan 25, 2021
Make a proper options parser for the RTS

#4243 · opened Aug 05, 2010 by Ian Lynagh <igloo@earth.li> 8.0.1 5 Pnormal RTS Trac import task
- 19
updated Jan 26, 2021
CPR optimisation for sum types if only one constructor is used

#5075 · opened Apr 01, 2011 by batterseapower 8.0.1 5 CPR analysis Pnormal Trac import feature request
- 1
- 34
updated Jan 26, 2021
Interaction between ORF and record pattern synonyms needs to be resolved.

#11228 · opened Dec 15, 2015 by Matthew Pickering 9.2.1 5 OverloadedRecordFields Pnormal PatternSynonyms Trac import bug records
- 2
- 1
- 9
updated Jan 27, 2021
Investigate performance of CoreTidy

#14738 · opened Jan 30, 2018 by Tobias Dammers 5 Pnormal Trac import bug compiler perf
- 5
updated Jan 28, 2021
GHC -M mode fails to ensure that boot files are built before source files

#14482 · opened Nov 17, 2017 by Ben Gamari 5 Pnormal Trac import bug
- 9
updated Jan 29, 2021
Regression in -fregs-graph performance

#7679 · opened Feb 11, 2013 by Simon Marlow 8.0.2 3 NCG backend Plow Trac import bug runtime perf
- 13
updated Jan 29, 2021
Improve link times on Windows

#16084 · opened Dec 22, 2018 by Ben Gamari 7 Phigh Trac import Windows bug compiler perf upstream
- 14
updated Jan 29, 2021
Prettier error messages?

#8809 · opened Feb 20, 2014 by joelteon 5 Pnormal Trac import error messages feature request well-typed priorities
- 74
updated Jan 29, 2021
Improve fregs-graph.

#16243 · opened Jan 27, 2019 by Andreas Klebinger 5 Pnormal Trac import code generation task
- 10
updated Jan 29, 2021
Deriving Generic of a big type takes a long time and lots of space

#5642 · opened Nov 17, 2011 by basvandijk 9.2.1 5 Phigh Trac import bug compiler perf deriving
- 59
updated Jan 30, 2021
Deriving instances is slow

#9557 · opened Sep 06, 2014 by Feuerbach 5 Pnormal Trac import bug compiler perf deriving
- 23
updated Jan 30, 2021