Issues · Glasgow Haskell Compiler / GHC · GitLab

Investigate delayed substitutions in types

#19704 · opened Apr 14, 2021 by Simon Peyton Jones Ttask compiler perf
- 1
updated Apr 15, 2021
Performance of type family consistency checks

#19703 · opened Apr 14, 2021 by Pepe Iborra Pnormal Tbug TypeFamilies compiler perf
- 5
updated Apr 16, 2021
Exponential memory use when using lots of <*>

#19695 · opened Apr 13, 2021 by maxigit Pnormal Tbug compiler perf
- 6
updated Apr 14, 2021
Revisit state Monads used inside GHC

#19657 · opened Apr 06, 2021 by Andreas Klebinger 9.4.1 Pnormal Ttask compiler perf
- 1
updated Apr 12, 2021
Potential regression when specializing the linear register allocator

#19656 · opened Apr 06, 2021 by Andreas Klebinger Plow compiler perf specialisation
- 0
updated Apr 08, 2021
Inefficient code generated from matching with pattern synonyms

#19643 · opened Apr 02, 2021 by Olle Fredriksson Pnormal Tbug compiler perf inlining join points
- 1
- 4
updated Apr 16, 2021
Laziness in CoreTidy can double memory usage as

#19625 · opened Apr 01, 2021 by Matthew Pickering Pnormal Tbug compiler perf
- 1
- 4
updated Apr 02, 2021
Lazy OccName field in Name leaves potential for leaks

#19619 · opened Mar 30, 2021 by Matthew Pickering Pnormal Tbug compiler perf
- 4
updated Apr 02, 2021
Use unsafe shifts inside GHC

#19618 · opened Mar 30, 2021 by Andreas Klebinger Ttask compiler perf
- 2
- 1
updated Apr 09, 2021
Split up PState

#19612 · opened Mar 28, 2021 by Sebastian Graf Plow Tbug compiler perf parser
- 1
- 2
updated Apr 03, 2021
Demand Analysis scales quadtratically in the size of the program

#19584 · opened Mar 24, 2021 by Sebastian Graf Pnormal Tbug compiler perf demand analysis
- 23
updated Apr 02, 2021
Idea: Annotating Core to avoid unnecessary traversal of large subexpressions

#19538 · opened Mar 15, 2021 by Ben Gamari Ttask compiler perf
- 5
updated Apr 14, 2021
Opportunity for increased sharing during substitution

#19537 · opened Mar 15, 2021 by Ben Gamari Ttask compiler perf
- 7
updated Mar 16, 2021
Less -fmax-simplifier-iterations in -O1

#19524 · opened Mar 11, 2021 by Sebastian Graf Ttask compiler perf newcomer simplifier
- 1
updated Apr 06, 2021
Compiler memory usage regressions for aeson in GHC 8.8 and 9.0.1

#19478 · opened Mar 02, 2021 by Simon Jakobi Phigh Tbug compiler perf
- 6
updated Mar 18, 2021
2-fold memory and 2.5-fold time usage regression from GHC 8.10.4 to 9.01 in the mmark package

#19471 · opened Mar 02, 2021 by Simon Jakobi Pnormal Tbug compiler perf
- 1
updated Mar 08, 2021
1/3 of heap allocation when compiling Cabal is due to `TyConApp` in generic types

#19459 · opened Feb 28, 2021 by Matthew Pickering Ttask compiler perf
- 5
updated Apr 12, 2021
(Derived) Ord instances generate terrible code

#19445 · opened Feb 26, 2021 by Sebastian Graf Tbug compiler perf deriving pointer tagging
- 0
updated Apr 02, 2021
"Thunk log" from ManyConstructors test

#19426 · opened Feb 23, 2021 by Matthew Pickering Ttask compiler perf
- 2
updated Feb 26, 2021
GNU make job server-alike for GHC --make

#19416 · opened Feb 22, 2021 by Adam Sandberg Eriksson Tfeature request compiler perf
- 2
- 19
updated Mar 04, 2021

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