[Git][ghc/ghc][wip/cpr-expandable-unfoldings] CprAnal: Don't attach CPR sigs to expandable bindings (#18154)
Sebastian Graf
gitlab at gitlab.haskell.org
Mon May 11 16:40:23 UTC 2020
Sebastian Graf pushed to branch wip/cpr-expandable-unfoldings at Glasgow Haskell Compiler / GHC
Commits:
b971d0ba by Sebastian Graf at 2020-05-11T18:40:12+02:00
CprAnal: Don't attach CPR sigs to expandable bindings (#18154)
Instead, look through expandable unfoldings in `cprTransform`.
See the new Note [CPR for expandable unfoldings]:
```
Long static data structures (whether top-level or not) like
xs = x1 : xs1
xs1 = x2 : xs2
xs2 = x3 : xs3
should not get CPR signatures, because they
* Never get WW'd, so their CPR signature should be irrelevant after analysis
(in fact the signature might even be harmful for that reason)
* Would need to be inlined/expanded to see their constructed product
* Recording CPR on them blows up interface file sizes and is redundant with
their unfolding. In case of Nested CPR, this blow-up can be quadratic!
But we can't just stop giving DataCon application bindings the CPR property,
for example
fac 0 = 1
fac n = n * fac (n-1)
fac certainly has the CPR property and should be WW'd! But FloatOut will
transform the first clause to
lvl = 1
fac 0 = lvl
If lvl doesn't have the CPR property, fac won't either. But lvl doesn't have a
CPR signature to extrapolate into a CPR transformer ('cprTransform'). So
instead we keep on cprAnal'ing through *expandable* unfoldings for these arity
0 bindings via 'cprExpandUnfolding_maybe'.
In practice, GHC generates a lot of (nested) TyCon and KindRep bindings, one
for each data declaration. It's wasteful to attach CPR signatures to each of
them (and intractable in case of Nested CPR).
```
Fixes #18154.
- - - - -
29 changed files:
- compiler/GHC/Core/Opt/CprAnal.hs
- testsuite/tests/numeric/should_compile/T14170.stdout
- testsuite/tests/numeric/should_compile/T14465.stdout
- testsuite/tests/numeric/should_compile/T7116.stdout
- testsuite/tests/simplCore/should_compile/T13143.stderr
- testsuite/tests/simplCore/should_compile/T13543.stderr
- testsuite/tests/simplCore/should_compile/T18013.stderr
- testsuite/tests/simplCore/should_compile/T3717.stderr
- testsuite/tests/simplCore/should_compile/T3772.stdout
- testsuite/tests/simplCore/should_compile/T4908.stderr
- testsuite/tests/simplCore/should_compile/T4930.stderr
- testsuite/tests/simplCore/should_compile/T7360.stderr
- testsuite/tests/simplCore/should_compile/noinline01.stderr
- testsuite/tests/simplCore/should_compile/par01.stderr
- testsuite/tests/simplCore/should_compile/spec-inline.stderr
- testsuite/tests/stranal/should_compile/T10694.stderr
- testsuite/tests/stranal/sigs/BottomFromInnerLambda.stderr
- testsuite/tests/stranal/sigs/CaseBinderCPR.stderr
- testsuite/tests/stranal/sigs/DmdAnalGADTs.hs
- testsuite/tests/stranal/sigs/DmdAnalGADTs.stderr
- testsuite/tests/stranal/sigs/HyperStrUse.stderr
- testsuite/tests/stranal/sigs/NewtypeArity.stderr
- testsuite/tests/stranal/sigs/StrAnalExample.stderr
- testsuite/tests/stranal/sigs/T12370.stderr
- testsuite/tests/stranal/sigs/T17932.stderr
- testsuite/tests/stranal/sigs/T5075.stderr
- testsuite/tests/stranal/sigs/T8569.stderr
- testsuite/tests/stranal/sigs/T8598.stderr
- testsuite/tests/stranal/sigs/UnsatFun.stderr
Changes:
=====================================
compiler/GHC/Core/Opt/CprAnal.hs
=====================================
@@ -21,7 +21,6 @@ import GHC.Core.Seq
import GHC.Utils.Outputable
import GHC.Types.Var.Env
import GHC.Types.Basic
-import Data.List
import GHC.Core.DataCon
import GHC.Types.Id
import GHC.Types.Id.Info
@@ -34,6 +33,9 @@ import GHC.Utils.Misc
import GHC.Utils.Error ( dumpIfSet_dyn, DumpFormat (..) )
import GHC.Data.Maybe ( isJust, isNothing )
+import Control.Monad ( guard )
+import Data.List
+
{- Note [Constructed Product Result]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The goal of Constructed Product Result analysis is to identify functions that
@@ -231,9 +233,14 @@ cprTransform env id
sig
where
sig
- | isGlobalId id -- imported function or data con worker
+ -- See Note [CPR for expandable unfoldings]
+ | Just rhs <- cprExpandUnfolding_maybe id
+ = fst $ cprAnal env rhs
+ -- Imported function or data con worker
+ | isGlobalId id
= getCprSig (idCprInfo id)
- | Just sig <- lookupSigEnv env id -- local let-bound
+ -- Local let-bound
+ | Just sig <- lookupSigEnv env id
= getCprSig sig
| otherwise
= topCprType
@@ -303,6 +310,8 @@ cprAnalBind top_lvl env id rhs
| stays_thunk = trimCprTy rhs_ty
-- See Note [CPR for sum types]
| returns_sum = trimCprTy rhs_ty
+ -- See Note [CPR for expandable unfoldings]
+ | will_expand = topCprType
| otherwise = rhs_ty
-- See Note [Arity trimming for CPR signatures]
sig = mkCprSigForArity (idArity id) rhs_ty'
@@ -316,6 +325,15 @@ cprAnalBind top_lvl env id rhs
(_, ret_ty) = splitPiTys (idType id)
not_a_prod = isNothing (deepSplitProductType_maybe (ae_fam_envs env) ret_ty)
returns_sum = not (isTopLevel top_lvl) && not_a_prod
+ -- See Note [CPR for expandable unfoldings]
+ will_expand = isJust (cprExpandUnfolding_maybe id)
+
+cprExpandUnfolding_maybe :: Id -> Maybe CoreExpr
+cprExpandUnfolding_maybe id = do
+ guard (idArity id == 0)
+ -- There are only phase 0 Simplifier runs after CPR analysis
+ guard (isActiveIn 0 (idInlineActivation id))
+ expandUnfolding_maybe (idUnfolding id)
{- Note [Arity trimming for CPR signatures]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -626,6 +644,48 @@ fac won't have the CPR property here when we trim every thunk! But the
assumption is that error cases are rarely entered and we are diverging anyway,
so WW doesn't hurt.
+Should we also trim CPR on DataCon application bindings?
+See Note [CPR for expandable unfoldings]!
+
+Note [CPR for expandable unfoldings]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Long static data structures (whether top-level or not) like
+
+ xs = x1 : xs1
+ xs1 = x2 : xs2
+ xs2 = x3 : xs3
+
+should not get CPR signatures, because they
+
+ * Never get WW'd, so their CPR signature should be irrelevant after analysis
+ (in fact the signature might even be harmful for that reason)
+ * Would need to be inlined/expanded to see their constructed product
+ * Recording CPR on them blows up interface file sizes and is redundant with
+ their unfolding. In case of Nested CPR, this blow-up can be quadratic!
+
+But we can't just stop giving DataCon application bindings the CPR property,
+for example
+
+ fac 0 = 1
+ fac n = n * fac (n-1)
+
+fac certainly has the CPR property and should be WW'd! But FloatOut will
+transform the first clause to
+
+ lvl = 1
+ fac 0 = lvl
+
+If lvl doesn't have the CPR property, fac won't either. But lvl doesn't have a
+CPR signature to extrapolate into a CPR transformer ('cprTransform'). So
+instead we keep on cprAnal'ing through *expandable* unfoldings for these arity
+0 bindings via 'cprExpandUnfolding_maybe'.
+
+In practice, GHC generates a lot of (nested) TyCon and KindRep bindings, one
+for each data declaration. It's wasteful to attach CPR signatures to each of
+them (and intractable in case of Nested CPR).
+
+Tracked by #18154.
+
Note [CPR examples]
~~~~~~~~~~~~~~~~~~~~
Here are some examples (stranal/should_compile/T10482a) of the
=====================================
testsuite/tests/numeric/should_compile/T14170.stdout
=====================================
@@ -13,7 +13,6 @@ NatVal.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
NatVal.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
NatVal.$trModule3 = GHC.Types.TrNameS NatVal.$trModule4
@@ -28,7 +27,6 @@ NatVal.$trModule2 = "NatVal"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
NatVal.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
NatVal.$trModule1 = GHC.Types.TrNameS NatVal.$trModule2
@@ -36,7 +34,6 @@ NatVal.$trModule1 = GHC.Types.TrNameS NatVal.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
NatVal.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
NatVal.$trModule
=====================================
testsuite/tests/numeric/should_compile/T14465.stdout
=====================================
@@ -20,7 +20,6 @@ M.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
M.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
M.$trModule3 = GHC.Types.TrNameS M.$trModule4
@@ -35,7 +34,6 @@ M.$trModule2 = "M"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
M.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
M.$trModule1 = GHC.Types.TrNameS M.$trModule2
@@ -43,7 +41,6 @@ M.$trModule1 = GHC.Types.TrNameS M.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
M.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
M.$trModule = GHC.Types.Module M.$trModule3 M.$trModule1
=====================================
testsuite/tests/numeric/should_compile/T7116.stdout
=====================================
@@ -13,7 +13,6 @@ T7116.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T7116.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T7116.$trModule3 = GHC.Types.TrNameS T7116.$trModule4
@@ -28,7 +27,6 @@ T7116.$trModule2 = "T7116"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T7116.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T7116.$trModule1 = GHC.Types.TrNameS T7116.$trModule2
@@ -36,7 +34,6 @@ T7116.$trModule1 = GHC.Types.TrNameS T7116.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
T7116.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
T7116.$trModule
=====================================
testsuite/tests/simplCore/should_compile/T13143.stderr
=====================================
@@ -33,7 +33,6 @@ T13143.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T13143.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T13143.$trModule3 = GHC.Types.TrNameS T13143.$trModule4
@@ -48,7 +47,6 @@ T13143.$trModule2 = "T13143"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T13143.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T13143.$trModule1 = GHC.Types.TrNameS T13143.$trModule2
@@ -56,7 +54,6 @@ T13143.$trModule1 = GHC.Types.TrNameS T13143.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
T13143.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
T13143.$trModule
=====================================
testsuite/tests/simplCore/should_compile/T13543.stderr
=====================================
@@ -7,7 +7,7 @@ Foo.g: <S(SS),1*U(1*U(U),1*U(U))>
==================== Cpr signatures ====================
-Foo.$trModule: m1
+Foo.$trModule:
Foo.f: m1
Foo.g: m1
=====================================
testsuite/tests/simplCore/should_compile/T18013.stderr
=====================================
@@ -177,7 +177,6 @@ T18013.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T18013.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T18013.$trModule3 = GHC.Types.TrNameS T18013.$trModule4
@@ -192,7 +191,6 @@ T18013.$trModule2 = "T18013"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T18013.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T18013.$trModule1 = GHC.Types.TrNameS T18013.$trModule2
@@ -200,7 +198,6 @@ T18013.$trModule1 = GHC.Types.TrNameS T18013.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
T18013.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
T18013.$trModule
=====================================
testsuite/tests/simplCore/should_compile/T3717.stderr
=====================================
@@ -13,7 +13,6 @@ T3717.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T3717.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T3717.$trModule3 = GHC.Types.TrNameS T3717.$trModule4
@@ -28,7 +27,6 @@ T3717.$trModule2 = "T3717"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T3717.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T3717.$trModule1 = GHC.Types.TrNameS T3717.$trModule2
@@ -36,7 +34,6 @@ T3717.$trModule1 = GHC.Types.TrNameS T3717.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
T3717.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
T3717.$trModule
=====================================
testsuite/tests/simplCore/should_compile/T3772.stdout
=====================================
@@ -13,7 +13,6 @@ T3772.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T3772.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T3772.$trModule3 = GHC.Types.TrNameS T3772.$trModule4
@@ -28,7 +27,6 @@ T3772.$trModule2 = "T3772"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T3772.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T3772.$trModule1 = GHC.Types.TrNameS T3772.$trModule2
@@ -36,7 +34,6 @@ T3772.$trModule1 = GHC.Types.TrNameS T3772.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
T3772.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
T3772.$trModule
=====================================
testsuite/tests/simplCore/should_compile/T4908.stderr
=====================================
@@ -13,7 +13,6 @@ T4908.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T4908.$trModule3 :: TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T4908.$trModule3 = GHC.Types.TrNameS T4908.$trModule4
@@ -28,7 +27,6 @@ T4908.$trModule2 = "T4908"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T4908.$trModule1 :: TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T4908.$trModule1 = GHC.Types.TrNameS T4908.$trModule2
@@ -36,7 +34,6 @@ T4908.$trModule1 = GHC.Types.TrNameS T4908.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
T4908.$trModule :: Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
T4908.$trModule
=====================================
testsuite/tests/simplCore/should_compile/T4930.stderr
=====================================
@@ -13,7 +13,6 @@ T4930.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T4930.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T4930.$trModule3 = GHC.Types.TrNameS T4930.$trModule4
@@ -28,7 +27,6 @@ T4930.$trModule2 = "T4930"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T4930.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T4930.$trModule1 = GHC.Types.TrNameS T4930.$trModule2
@@ -36,7 +34,6 @@ T4930.$trModule1 = GHC.Types.TrNameS T4930.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
T4930.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
T4930.$trModule
=====================================
testsuite/tests/simplCore/should_compile/T7360.stderr
=====================================
@@ -64,7 +64,6 @@ T7360.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T7360.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T7360.$trModule3 = GHC.Types.TrNameS T7360.$trModule4
@@ -79,7 +78,6 @@ T7360.$trModule2 = "T7360"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T7360.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T7360.$trModule1 = GHC.Types.TrNameS T7360.$trModule2
@@ -87,7 +85,6 @@ T7360.$trModule1 = GHC.Types.TrNameS T7360.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
T7360.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
T7360.$trModule
@@ -110,7 +107,6 @@ T7360.$tcFoo2 = "Foo"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T7360.$tcFoo1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T7360.$tcFoo1 = GHC.Types.TrNameS T7360.$tcFoo2
@@ -118,7 +114,6 @@ T7360.$tcFoo1 = GHC.Types.TrNameS T7360.$tcFoo2
-- RHS size: {terms: 7, types: 0, coercions: 0, joins: 0/0}
T7360.$tcFoo :: GHC.Types.TyCon
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 70}]
T7360.$tcFoo
@@ -147,7 +142,6 @@ T7360.$tc'Foo6 = "'Foo1"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T7360.$tc'Foo5 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T7360.$tc'Foo5 = GHC.Types.TrNameS T7360.$tc'Foo6
@@ -155,7 +149,6 @@ T7360.$tc'Foo5 = GHC.Types.TrNameS T7360.$tc'Foo6
-- RHS size: {terms: 7, types: 0, coercions: 0, joins: 0/0}
T7360.$tc'Foo1 :: GHC.Types.TyCon
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 70}]
T7360.$tc'Foo1
@@ -177,7 +170,6 @@ T7360.$tc'Foo8 = "'Foo2"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T7360.$tc'Foo7 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T7360.$tc'Foo7 = GHC.Types.TrNameS T7360.$tc'Foo8
@@ -185,7 +177,6 @@ T7360.$tc'Foo7 = GHC.Types.TrNameS T7360.$tc'Foo8
-- RHS size: {terms: 7, types: 0, coercions: 0, joins: 0/0}
T7360.$tc'Foo2 :: GHC.Types.TyCon
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 70}]
T7360.$tc'Foo2
@@ -212,7 +203,6 @@ T7360.$tc'Foo11 = "'Foo3"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T7360.$tc'Foo10 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T7360.$tc'Foo10 = GHC.Types.TrNameS T7360.$tc'Foo11
@@ -220,7 +210,6 @@ T7360.$tc'Foo10 = GHC.Types.TrNameS T7360.$tc'Foo11
-- RHS size: {terms: 7, types: 0, coercions: 0, joins: 0/0}
T7360.$tc'Foo3 :: GHC.Types.TyCon
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 70}]
T7360.$tc'Foo3
=====================================
testsuite/tests/simplCore/should_compile/noinline01.stderr
=====================================
@@ -14,7 +14,7 @@ Noinline01.$trModule4 :: GHC.Prim.Addr#
"main"#;
Noinline01.$trModule3 :: GHC.Types.TrName
-[GblId, Cpr=m1, Unf=OtherCon []] =
+[GblId, Unf=OtherCon []] =
CCS_DONT_CARE GHC.Types.TrNameS! [Noinline01.$trModule4];
Noinline01.$trModule2 :: GHC.Prim.Addr#
@@ -22,11 +22,11 @@ Noinline01.$trModule2 :: GHC.Prim.Addr#
"Noinline01"#;
Noinline01.$trModule1 :: GHC.Types.TrName
-[GblId, Cpr=m1, Unf=OtherCon []] =
+[GblId, Unf=OtherCon []] =
CCS_DONT_CARE GHC.Types.TrNameS! [Noinline01.$trModule2];
Noinline01.$trModule :: GHC.Types.Module
-[GblId, Cpr=m1, Unf=OtherCon []] =
+[GblId, Unf=OtherCon []] =
CCS_DONT_CARE GHC.Types.Module! [Noinline01.$trModule3
Noinline01.$trModule1];
=====================================
testsuite/tests/simplCore/should_compile/par01.stderr
=====================================
@@ -21,7 +21,7 @@ Par01.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
Par01.$trModule3 :: GHC.Types.TrName
-[GblId, Cpr=m1, Unf=OtherCon []]
+[GblId, Unf=OtherCon []]
Par01.$trModule3 = GHC.Types.TrNameS Par01.$trModule4
-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0}
@@ -31,12 +31,12 @@ Par01.$trModule2 = "Par01"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
Par01.$trModule1 :: GHC.Types.TrName
-[GblId, Cpr=m1, Unf=OtherCon []]
+[GblId, Unf=OtherCon []]
Par01.$trModule1 = GHC.Types.TrNameS Par01.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
Par01.$trModule :: GHC.Types.Module
-[GblId, Cpr=m1, Unf=OtherCon []]
+[GblId, Unf=OtherCon []]
Par01.$trModule
= GHC.Types.Module Par01.$trModule3 Par01.$trModule1
=====================================
testsuite/tests/simplCore/should_compile/spec-inline.stderr
=====================================
@@ -13,7 +13,6 @@ Roman.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
Roman.$trModule3 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
Roman.$trModule3 = GHC.Types.TrNameS Roman.$trModule4
@@ -28,7 +27,6 @@ Roman.$trModule2 = "Roman"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
Roman.$trModule1 :: GHC.Types.TrName
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
Roman.$trModule1 = GHC.Types.TrNameS Roman.$trModule2
@@ -36,7 +34,6 @@ Roman.$trModule1 = GHC.Types.TrNameS Roman.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
Roman.$trModule :: GHC.Types.Module
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
Roman.$trModule
@@ -132,7 +129,6 @@ Roman.foo_go
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
Roman.foo2 :: Int
[GblId,
- Cpr=m1,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
Roman.foo2 = GHC.Types.I# 6#
@@ -140,7 +136,6 @@ Roman.foo2 = GHC.Types.I# 6#
-- RHS size: {terms: 2, types: 1, coercions: 0, joins: 0/0}
Roman.foo1 :: Maybe Int
[GblId,
- Cpr=m2,
Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True,
WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
Roman.foo1 = GHC.Maybe.Just @Int Roman.foo2
=====================================
testsuite/tests/stranal/should_compile/T10694.stderr
=====================================
@@ -6,26 +6,26 @@ Result size of Tidy Core = {terms: 74, types: 65, coercions: 0, joins: 0/4}
T10694.$wpm [InlPrag=NOINLINE] :: Int -> Int -> (# Int, Int #)
[GblId, Arity=2, Str=<L,U(U)><L,U(U)>, Unf=OtherCon []]
T10694.$wpm
- = \ (w_s1vj :: Int) (w1_s1vk :: Int) ->
+ = \ (w_s1v1 :: Int) (w1_s1v2 :: Int) ->
let {
- l_s1uR :: Int
+ l_s1uz :: Int
[LclId]
- l_s1uR
- = case w_s1vj of { GHC.Types.I# x_aJ9 -> case w1_s1vk of { GHC.Types.I# y_aJc -> GHC.Types.I# (GHC.Prim.+# x_aJ9 y_aJc) } } } in
+ l_s1uz
+ = case w_s1v1 of { GHC.Types.I# x_aJ0 -> case w1_s1v2 of { GHC.Types.I# y_aJ3 -> GHC.Types.I# (GHC.Prim.+# x_aJ0 y_aJ3) } } } in
let {
- l1_s1uS :: Int
+ l1_s1uA :: Int
[LclId]
- l1_s1uS
- = case w_s1vj of { GHC.Types.I# x_aJh -> case w1_s1vk of { GHC.Types.I# y_aJk -> GHC.Types.I# (GHC.Prim.-# x_aJh y_aJk) } } } in
+ l1_s1uA
+ = case w_s1v1 of { GHC.Types.I# x_aJ8 -> case w1_s1v2 of { GHC.Types.I# y_aJb -> GHC.Types.I# (GHC.Prim.-# x_aJ8 y_aJb) } } } in
let {
- l2_s1uT :: [Int]
+ l2_s1uB :: [Int]
[LclId, Unf=OtherCon []]
- l2_s1uT = GHC.Types.: @Int l1_s1uS (GHC.Types.[] @Int) } in
+ l2_s1uB = GHC.Types.: @Int l1_s1uA (GHC.Types.[] @Int) } in
let {
- l3_sJv :: [Int]
+ l3_sJm :: [Int]
[LclId, Unf=OtherCon []]
- l3_sJv = GHC.Types.: @Int l_s1uR l2_s1uT } in
- (# GHC.List.$w!! @Int l3_sJv 0#, GHC.List.$w!! @Int l3_sJv 1# #)
+ l3_sJm = GHC.Types.: @Int l_s1uz l2_s1uB } in
+ (# GHC.List.$w!! @Int l3_sJm 0#, GHC.List.$w!! @Int l3_sJm 1# #)
-- RHS size: {terms: 10, types: 11, coercions: 0, joins: 0/0}
pm [InlPrag=NOUSERINLINE[0]] :: Int -> Int -> (Int, Int)
@@ -35,9 +35,9 @@ pm [InlPrag=NOUSERINLINE[0]] :: Int -> Int -> (Int, Int)
Cpr=m1,
Unf=Unf{Src=InlineStable, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True,
Guidance=ALWAYS_IF(arity=2,unsat_ok=True,boring_ok=False)
- Tmpl= \ (w_s1vj [Occ=Once] :: Int) (w1_s1vk [Occ=Once] :: Int) ->
- case T10694.$wpm w_s1vj w1_s1vk of { (# ww1_s1vp [Occ=Once], ww2_s1vq [Occ=Once] #) -> (ww1_s1vp, ww2_s1vq) }}]
-pm = \ (w_s1vj :: Int) (w1_s1vk :: Int) -> case T10694.$wpm w_s1vj w1_s1vk of { (# ww1_s1vp, ww2_s1vq #) -> (ww1_s1vp, ww2_s1vq) }
+ Tmpl= \ (w_s1v1 [Occ=Once] :: Int) (w1_s1v2 [Occ=Once] :: Int) ->
+ case T10694.$wpm w_s1v1 w1_s1v2 of { (# ww1_s1v7 [Occ=Once], ww2_s1v8 [Occ=Once] #) -> (ww1_s1v7, ww2_s1v8) }}]
+pm = \ (w_s1v1 :: Int) (w1_s1v2 :: Int) -> case T10694.$wpm w_s1v1 w1_s1v2 of { (# ww1_s1v7, ww2_s1v8 #) -> (ww1_s1v7, ww2_s1v8) }
-- RHS size: {terms: 8, types: 9, coercions: 0, joins: 0/0}
m :: Int -> Int -> Int
@@ -46,9 +46,9 @@ m :: Int -> Int -> Int
Str=<L,U(U)><L,U(U)>,
Unf=Unf{Src=InlineStable, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True,
Guidance=ALWAYS_IF(arity=2,unsat_ok=True,boring_ok=False)
- Tmpl= \ (x_awt [Occ=Once] :: Int) (y_awu [Occ=Once] :: Int) ->
- case pm x_awt y_awu of { (_ [Occ=Dead], mr_aww [Occ=Once]) -> mr_aww }}]
-m = \ (x_awt :: Int) (y_awu :: Int) -> case T10694.$wpm x_awt y_awu of { (# ww1_s1vp, ww2_s1vq #) -> ww2_s1vq }
+ Tmpl= \ (x_awo [Occ=Once] :: Int) (y_awp [Occ=Once] :: Int) ->
+ case pm x_awo y_awp of { (_ [Occ=Dead], mr_awr [Occ=Once]) -> mr_awr }}]
+m = \ (x_awo :: Int) (y_awp :: Int) -> case T10694.$wpm x_awo y_awp of { (# ww1_s1v7, ww2_s1v8 #) -> ww2_s1v8 }
-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0}
T10694.$trModule4 :: GHC.Prim.Addr#
@@ -57,9 +57,7 @@ T10694.$trModule4 = "main"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T10694.$trModule3 :: GHC.Types.TrName
-[GblId,
- Cpr=m1,
- Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
+[GblId, Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T10694.$trModule3 = GHC.Types.TrNameS T10694.$trModule4
-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0}
@@ -69,17 +67,13 @@ T10694.$trModule2 = "T10694"#
-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0}
T10694.$trModule1 :: GHC.Types.TrName
-[GblId,
- Cpr=m1,
- Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
+[GblId, Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 20}]
T10694.$trModule1 = GHC.Types.TrNameS T10694.$trModule2
-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0}
-T10694.$trModule :: GHC.Unit.Module
-[GblId,
- Cpr=m1,
- Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
-T10694.$trModule = GHC.Unit.Module T10694.$trModule3 T10694.$trModule1
+T10694.$trModule :: GHC.Types.Module
+[GblId, Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 30}]
+T10694.$trModule = GHC.Types.Module T10694.$trModule3 T10694.$trModule1
=====================================
testsuite/tests/stranal/sigs/BottomFromInnerLambda.stderr
=====================================
@@ -7,7 +7,7 @@ BottomFromInnerLambda.f: <S(S),1*U(U)>
==================== Cpr signatures ====================
-BottomFromInnerLambda.$trModule: m1
+BottomFromInnerLambda.$trModule:
BottomFromInnerLambda.expensive: m1
BottomFromInnerLambda.f:
=====================================
testsuite/tests/stranal/sigs/CaseBinderCPR.stderr
=====================================
@@ -6,7 +6,7 @@ CaseBinderCPR.f_list_cmp: <L,C(C1(U(U)))><S,1*U><S,1*U>
==================== Cpr signatures ====================
-CaseBinderCPR.$trModule: m1
+CaseBinderCPR.$trModule:
CaseBinderCPR.f_list_cmp: m1
=====================================
testsuite/tests/stranal/sigs/DmdAnalGADTs.hs
=====================================
@@ -7,11 +7,13 @@ data D a where
A :: D Int
B :: D (Int -> Int)
+-- Doesn't have the CPR property anymore (#18154), but an expandable unfolding.
+-- The point of this test is that f' has the CPR property.
hasCPR :: Int
hasCPR = 1
hasStrSig :: Int -> Int
-hasStrSig x = x
+hasStrSig x = x + 1
diverges :: Int
diverges = diverges
=====================================
testsuite/tests/stranal/sigs/DmdAnalGADTs.stderr
=====================================
@@ -9,21 +9,21 @@ DmdAnalGADTs.f: <S,1*U>
DmdAnalGADTs.f': <S,1*U>
DmdAnalGADTs.g: <S,1*U>
DmdAnalGADTs.hasCPR:
-DmdAnalGADTs.hasStrSig: <S,1*U>
+DmdAnalGADTs.hasStrSig: <S,1*U(U)>
==================== Cpr signatures ====================
-DmdAnalGADTs.$tc'A: m1
-DmdAnalGADTs.$tc'B: m1
-DmdAnalGADTs.$tcD: m1
-DmdAnalGADTs.$trModule: m1
+DmdAnalGADTs.$tc'A:
+DmdAnalGADTs.$tc'B:
+DmdAnalGADTs.$tcD:
+DmdAnalGADTs.$trModule:
DmdAnalGADTs.diverges: b
DmdAnalGADTs.f:
DmdAnalGADTs.f': m1
DmdAnalGADTs.g:
-DmdAnalGADTs.hasCPR: m1
-DmdAnalGADTs.hasStrSig:
+DmdAnalGADTs.hasCPR:
+DmdAnalGADTs.hasStrSig: m1
@@ -37,6 +37,6 @@ DmdAnalGADTs.f: <S,1*U>
DmdAnalGADTs.f': <S,1*U>
DmdAnalGADTs.g: <S,1*U>
DmdAnalGADTs.hasCPR:
-DmdAnalGADTs.hasStrSig: <S,1*U>
+DmdAnalGADTs.hasStrSig: <S,1*U(U)>
=====================================
testsuite/tests/stranal/sigs/HyperStrUse.stderr
=====================================
@@ -6,7 +6,7 @@ HyperStrUse.f: <S(SL),1*U(1*U(U),A)><S,1*U>
==================== Cpr signatures ====================
-HyperStrUse.$trModule: m1
+HyperStrUse.$trModule:
HyperStrUse.f: m1
=====================================
testsuite/tests/stranal/sigs/NewtypeArity.stderr
=====================================
@@ -9,9 +9,9 @@ Test.t2: <S,1*U(U)><S,1*U(U)>
==================== Cpr signatures ====================
-Test.$tc'MkT: m1
-Test.$tcT: m1
-Test.$trModule: m1
+Test.$tc'MkT:
+Test.$tcT:
+Test.$trModule:
Test.t: m1
Test.t2: m1
=====================================
testsuite/tests/stranal/sigs/StrAnalExample.stderr
=====================================
@@ -6,7 +6,7 @@ StrAnalExample.foo: <S,1*U>
==================== Cpr signatures ====================
-StrAnalExample.$trModule: m1
+StrAnalExample.$trModule:
StrAnalExample.foo:
=====================================
testsuite/tests/stranal/sigs/T12370.stderr
=====================================
@@ -7,7 +7,7 @@ T12370.foo: <S(SS),1*U(1*U(U),1*U(U))>
==================== Cpr signatures ====================
-T12370.$trModule: m1
+T12370.$trModule:
T12370.bar: m1
T12370.foo: m1
=====================================
testsuite/tests/stranal/sigs/T17932.stderr
=====================================
@@ -10,11 +10,11 @@ T17932.flags: <S(SS),1*U(1*U,1*U)>
==================== Cpr signatures ====================
-T17932.$tc'Options: m1
-T17932.$tc'X: m1
-T17932.$tcOptions: m1
-T17932.$tcX: m1
-T17932.$trModule: m1
+T17932.$tc'Options:
+T17932.$tc'X:
+T17932.$tcOptions:
+T17932.$tcX:
+T17932.$trModule:
T17932.flags:
=====================================
testsuite/tests/stranal/sigs/T5075.stderr
=====================================
@@ -6,7 +6,7 @@ T5075.loop: <S(LLC(C(S))LLLLL),U(A,A,C(C1(U)),A,A,A,A,A)><L,U(A,A,C(C1(U)),A,A,A
==================== Cpr signatures ====================
-T5075.$trModule: m1
+T5075.$trModule:
T5075.loop:
=====================================
testsuite/tests/stranal/sigs/T8569.stderr
=====================================
@@ -9,10 +9,10 @@ T8569.addUp: <S,1*U><L,U>
==================== Cpr signatures ====================
-T8569.$tc'Rdata: m1
-T8569.$tc'Rint: m1
-T8569.$tcRep: m1
-T8569.$trModule: m1
+T8569.$tc'Rdata:
+T8569.$tc'Rint:
+T8569.$tcRep:
+T8569.$trModule:
T8569.addUp:
=====================================
testsuite/tests/stranal/sigs/T8598.stderr
=====================================
@@ -6,7 +6,7 @@ T8598.fun: <S,1*U(U)>
==================== Cpr signatures ====================
-T8598.$trModule: m1
+T8598.$trModule:
T8598.fun: m1
=====================================
testsuite/tests/stranal/sigs/UnsatFun.stderr
=====================================
@@ -12,7 +12,7 @@ UnsatFun.h3: <C(S),1*C1(U)>
==================== Cpr signatures ====================
-UnsatFun.$trModule: m1
+UnsatFun.$trModule:
UnsatFun.f: b
UnsatFun.g:
UnsatFun.g':
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b971d0ba91afa44ba6085dc58845759aa872cc82
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b971d0ba91afa44ba6085dc58845759aa872cc82
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