Exponential compilation time with RWST & ReaderT stack with `-02`
See the attached file. The compilation time grows exponentially with additional fields in HuteStruct. Tried with GHC-8.0.1 and quite recent HEAD (8.2)
adding a field doubles the compilation time with -O2.
- 9: 17s
- 10: 34s
- 11: 83s
on my machine. With
-01around 3sec, independently of the struct size.
The original issue: https://github.com/yesodweb/yesod/issues/1348
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.0.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |