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| author | Sebastian Graf <sebastian.graf@kit.edu> | 2020-04-08 17:26:55 +0200 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2020-04-09 23:11:21 -0400 |
| commit | 101fab6ee6cee72b9ffce40e45ebf39466d1c01a (patch) | |
| tree | c122df48ecbc2e1db472e43d2b6fac5be7b9a9d4 /compiler/prelude | |
| parent | 045139f40089f288866c1c59c7379be82ecdaf34 (diff) | |
| download | haskell-101fab6ee6cee72b9ffce40e45ebf39466d1c01a.tar.gz | |
Special case `isConstraintKindCon` on `AlgTyCon`
Previously, the `tyConUnique` record selector would unfold into a huge
case expression that would be inlined in all call sites, such as the
`INLINE`-annotated `coreView`, see #18026. `constraintKindTyConKey` only
occurs as the `Unique` of an `AlgTyCon` anyway, so we can make the code
a lot more compact, but have to move it to GHC.Core.TyCon.
Metric Decrease:
T12150
T12234
Diffstat (limited to 'compiler/prelude')
| -rw-r--r-- | compiler/prelude/TysWiredIn.hs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/prelude/TysWiredIn.hs b/compiler/prelude/TysWiredIn.hs index 4bf7ad6642..682c9d7d8a 100644 --- a/compiler/prelude/TysWiredIn.hs +++ b/compiler/prelude/TysWiredIn.hs @@ -639,6 +639,7 @@ typeNatKind = mkTyConTy typeNatKindCon typeSymbolKind = mkTyConTy typeSymbolKindCon constraintKindTyCon :: TyCon +-- 'TyCon.isConstraintKindCon' assumes that this is an AlgTyCon! constraintKindTyCon = pcTyCon constraintKindTyConName Nothing [] [] liftedTypeKind, typeToTypeKind, constraintKind :: Kind |