Bigger core size in ghc8 compared to ghc7
Generated core size (as reported by ghc -v) is much bigger in ghc 8.0.2 compared to ghc 7.10.1. Things are slightly better in ghc 8.2.0rc2, but not as good as in ghc7
I think that results in a slight runtime performance problem.
steps to reproduce:
ghc -O A.hs
Result size of CorePrep = {terms: 5,016, types: 9,813, coercions: 1,443} -- ghc8
Result size of CorePrep = {terms: 975, types: 2,375, coercions: 150} -- ghc7
Result size of CorePrep = {terms: 1,342, types: 2,838, coercions: 320, joins: 0/66} -- ghc8.2
Trac metadata
Trac field | Value |
---|---|
Version | 8.2.1-rc2 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
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Blocking | |
CC | |
Operating system | |
Architecture |