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author | Sebastian Graf <sebastian.graf@kit.edu> | 2022-04-07 17:21:08 +0200 |
---|---|---|
committer | Sebastian Graf <sebastian.graf@kit.edu> | 2022-04-12 17:54:57 +0200 |
commit | 4d2ee313f23a4454d12c9f94ff132f078dd64d31 (patch) | |
tree | e7bd7b66f35660864f19feb998ab1d9ca96665fa /testsuite/tests | |
parent | 0090ad7b8b436961fe1e225aae214d0ea1381c07 (diff) | |
download | haskell-4d2ee313f23a4454d12c9f94ff132f078dd64d31.tar.gz |
Specialising through specialised method calls (#19644)
In #19644, we discovered that the ClassOp/DFun rules from
Note [ClassOp/DFun selection] inhibit transitive specialisation in a scenario
like
```
class C a where m :: Show b => a -> b -> ...; n :: ...
instance C Int where m = ... -- $cm :: Show b => Int -> b -> ...
f :: forall a b. (C a, Show b) => ...
f $dC $dShow = ... m @a $dC @b $dShow ...
main = ... f @Int @Bool ...
```
After we specialise `f` for `Int`, we'll see `m @a $dC @b $dShow` in the body of
`$sf`. But before this patch, Specialise doesn't apply the ClassOp/DFun rule to
rewrite to a call of the instance method for `C Int`, e.g., `$cm @Bool $dShow`.
As a result, Specialise couldn't further specialise `$cm` for `Bool`.
There's a better example in `Note [Specialisation modulo dictionary selectors]`.
This patch enables proper Specialisation, as follows:
1. In the App case of `specExpr`, try to apply the CalssOp/DictSel rule on the
head of the application
2. Attach an unfolding to freshly-bound dictionary ids such as `$dC` and
`$dShow` in `bindAuxiliaryDict`
NB: Without (2), (1) would be pointless, because `lookupRule` wouldn't be able
to look into the RHS of `$dC` to see the DFun.
(2) triggered #21332, because the Specialiser floats around dictionaries without
accounting for them in the `SpecEnv`'s `InScopeSet`, triggering a panic when
rewriting dictionary unfoldings.
Fixes #19644 and #21332.
Diffstat (limited to 'testsuite/tests')
-rw-r--r-- | testsuite/tests/perf/compiler/T4007.stdout | 1 | ||||
-rw-r--r-- | testsuite/tests/perf/compiler/all.T | 1 | ||||
-rw-r--r-- | testsuite/tests/simplCore/should_compile/Makefile | 5 | ||||
-rw-r--r-- | testsuite/tests/simplCore/should_compile/T17966.stderr | 310 | ||||
-rw-r--r-- | testsuite/tests/simplCore/should_compile/T19644.hs | 20 | ||||
-rw-r--r-- | testsuite/tests/simplCore/should_compile/T19644.stderr | 246 | ||||
-rw-r--r-- | testsuite/tests/simplCore/should_compile/T6056.stderr | 1 | ||||
-rw-r--r-- | testsuite/tests/simplCore/should_compile/T7785.stderr | 410 | ||||
-rw-r--r-- | testsuite/tests/simplCore/should_compile/all.T | 12 |
9 files changed, 990 insertions, 16 deletions
diff --git a/testsuite/tests/perf/compiler/T4007.stdout b/testsuite/tests/perf/compiler/T4007.stdout index c83de9cfd9..fc69f2c1c3 100644 --- a/testsuite/tests/perf/compiler/T4007.stdout +++ b/testsuite/tests/perf/compiler/T4007.stdout @@ -3,7 +3,6 @@ Rule fired: Class op return (BUILTIN) Rule fired: unpack (GHC.Base) Rule fired: fold/build (GHC.Base) Rule fired: Class op >> (BUILTIN) -Rule fired: Class op >> (BUILTIN) Rule fired: SPEC/T4007 sequence__c @IO _ _ (T4007) Rule fired: <# (BUILTIN) Rule fired: tagToEnum# (BUILTIN) diff --git a/testsuite/tests/perf/compiler/all.T b/testsuite/tests/perf/compiler/all.T index 5cbe3b6e51..17bb717ee9 100644 --- a/testsuite/tests/perf/compiler/all.T +++ b/testsuite/tests/perf/compiler/all.T @@ -54,6 +54,7 @@ test('T3064', compile, ['']) +# The foldr/build rule is the important one test('T4007', normal, makefile_test, ['T4007']) test('T5030', diff --git a/testsuite/tests/simplCore/should_compile/Makefile b/testsuite/tests/simplCore/should_compile/Makefile index b5041800ed..02358e1746 100644 --- a/testsuite/tests/simplCore/should_compile/Makefile +++ b/testsuite/tests/simplCore/should_compile/Makefile @@ -13,11 +13,6 @@ T18815: $(RM) -f T18815.o T18815.hi - '$(TEST_HC)' $(TEST_HC_OPTS) -O -c -ddump-simpl T18815.hs 2> /dev/null | grep 'join ' -T17966: - $(RM) -f T17966.o T17966.hi - - '$(TEST_HC)' $(TEST_HC_OPTS) -O -c -ddump-spec T17966.hs 2> /dev/null | grep 'SPEC' - # Expecting a SPEC rule for $cm - T17409: $(RM) -f T17409.o T17409.hi - '$(TEST_HC)' $(TEST_HC_OPTS) -O -c -dverbose-core2core -dsuppress-uniques T17409.hs 2> /dev/null | grep '\<id\>' diff --git a/testsuite/tests/simplCore/should_compile/T17966.stderr b/testsuite/tests/simplCore/should_compile/T17966.stderr new file mode 100644 index 0000000000..24e09d538f --- /dev/null +++ b/testsuite/tests/simplCore/should_compile/T17966.stderr @@ -0,0 +1,310 @@ + +==================== Specialise ==================== +Result size of Specialise + = {terms: 166, types: 158, coercions: 24, joins: 0/0} + +-- RHS size: {terms: 2, types: 1, coercions: 0, joins: 0/0} +$dShow_sRN :: Show (Maybe Integer) +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=False, Value=False, ConLike=True, + WorkFree=False, Expandable=True, Guidance=IF_ARGS [] 20 0}] +$dShow_sRN = GHC.Show.$fShowMaybe @Integer GHC.Show.$fShowInteger + +Rec { +-- RHS size: {terms: 2, types: 1, coercions: 4, joins: 0/0} +$dC_sRM :: C Bool () +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=False, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 20 60}] +$dC_sRM + = ($cm_aHo @() GHC.Show.$fShow()) + `cast` (Sym (T17966.N:C[0] <Bool>_N <()>_N) + :: (forall c. Show c => Bool -> () -> c -> String) ~R# C Bool ()) + +-- RHS size: {terms: 30, types: 24, coercions: 0, joins: 0/0} +$s$cm_sRQ [InlPrag=[0]] + :: forall {c}. Show c => Bool -> () -> c -> [Char] +[LclId, Arity=4] +$s$cm_sRQ + = \ (@c_aHr) + ($dShow_aHs :: Show c_aHr) + (a_aBf :: Bool) + (b_aBg :: ()) + (c_aBh :: c_aHr) -> + GHC.Base.augment + @Char + (\ (@b_aQg) + (c_aQh [OS=OneShot] :: Char -> b_aQg -> b_aQg) + (n_aQi [OS=OneShot] :: b_aQg) -> + GHC.Base.foldr + @Char + @b_aQg + c_aQh + n_aQi + (case a_aBf of { + False -> GHC.Show.$fShowBool5; + True -> GHC.Show.$fShowBool4 + })) + (GHC.Base.augment + @Char + (\ (@b_aQg) + (c_aQh [OS=OneShot] :: Char -> b_aQg -> b_aQg) + (n_aQi [OS=OneShot] :: b_aQg) -> + GHC.Base.foldr + @Char @b_aQg c_aQh n_aQi (GHC.Show.$fShow()_$cshow b_aBg)) + (show @c_aHr $dShow_aHs c_aBh)) + +-- RHS size: {terms: 33, types: 28, coercions: 0, joins: 0/0} +$cm_aHo [InlPrag=INLINABLE[0]] + :: forall b c. (Show b, Show c) => Bool -> b -> c -> String +[LclId, + Arity=5, + Unf=Unf{Src=InlineStable, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, + Guidance=IF_ARGS [30 30 30 0 0] 140 0 + Tmpl= \ (@b_aHl) + ($dShow_aHm [Occ=Once1] :: Show b_aHl) + (@c_aHr) + ($dShow_aHs [Occ=Once1] :: Show c_aHr) + (a_aBf [Occ=Once1!] :: Bool) + (b_aBg [Occ=Once1] :: b_aHl) + (c_aBh [Occ=Once1] :: c_aHr) -> + ++ + @Char + (case a_aBf of { + False -> GHC.Show.$fShowBool5; + True -> GHC.Show.$fShowBool4 + }) + (++ + @Char + (show @b_aHl $dShow_aHm b_aBg) + (show @c_aHr $dShow_aHs c_aBh))}, + RULES: "SPEC $cm @()" [0] + forall ($dShow_sRP :: Show ()). $cm_aHo @() $dShow_sRP = $s$cm_sRQ] +$cm_aHo + = \ (@b_aHl) + ($dShow_aHm :: Show b_aHl) + (@c_aHr) + ($dShow_aHs :: Show c_aHr) + (a_aBf :: Bool) + (b_aBg :: b_aHl) + (c_aBh :: c_aHr) -> + GHC.Base.augment + @Char + (\ (@b_aQg) + (c_aQh [OS=OneShot] :: Char -> b_aQg -> b_aQg) + (n_aQi [OS=OneShot] :: b_aQg) -> + GHC.Base.foldr + @Char + @b_aQg + c_aQh + n_aQi + (case a_aBf of { + False -> GHC.Show.$fShowBool5; + True -> GHC.Show.$fShowBool4 + })) + (GHC.Base.augment + @Char + (\ (@b_aQg) + (c_aQh [OS=OneShot] :: Char -> b_aQg -> b_aQg) + (n_aQi [OS=OneShot] :: b_aQg) -> + GHC.Base.foldr + @Char @b_aQg c_aQh n_aQi (show @b_aHl $dShow_aHm b_aBg)) + (show @c_aHr $dShow_aHs c_aBh)) +end Rec } + +-- RHS size: {terms: 1, types: 0, coercions: 10, joins: 0/0} +T17966.$fCBoolb [InlPrag=INLINE (sat-args=0)] + :: forall b. Show b => C Bool b +[LclIdX[DFunId(nt)], + Arity=5, + Unf=Unf{Src=InlineStable, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, + Guidance=ALWAYS_IF(arity=1,unsat_ok=False,boring_ok=True) + Tmpl= $cm_aHo + `cast` (forall (b :: <*>_N). + <Show b>_R %<'Many>_N ->_R Sym (T17966.N:C[0] <Bool>_N <b>_N) + :: (forall {b} c. (Show b, Show c) => Bool -> b -> c -> String) + ~R# (forall {b}. Show b => C Bool b))}] +T17966.$fCBoolb + = $cm_aHo + `cast` (forall (b :: <*>_N). + <Show b>_R %<'Many>_N ->_R Sym (T17966.N:C[0] <Bool>_N <b>_N) + :: (forall {b} c. (Show b, Show c) => Bool -> b -> c -> String) + ~R# (forall {b}. Show b => C Bool b)) + +-- RHS size: {terms: 18, types: 15, coercions: 3, joins: 0/0} +$sf_sRO [InlPrag=[0]] :: Bool -> () -> Maybe Integer -> [Char] +[LclId, Arity=3] +$sf_sRO + = \ (a_aBl :: Bool) (b_aBm :: ()) (c_aBn :: Maybe Integer) -> + GHC.Base.build + @Char + (\ (@b_aQz) + (c_aQA [OS=OneShot] :: Char -> b_aQz -> b_aQz) + (n_aQB [OS=OneShot] :: b_aQz) -> + GHC.Base.foldr + @Char + @b_aQz + c_aQA + (GHC.CString.unpackFoldrCString# @b_aQz "!"# c_aQA n_aQB) + (($dC_sRM + `cast` (T17966.N:C[0] <Bool>_N <()>_N + :: C Bool () ~R# (forall c. Show c => Bool -> () -> c -> String))) + @(Maybe Integer) $dShow_sRN a_aBl b_aBm c_aBn)) + +-- RHS size: {terms: 23, types: 21, coercions: 3, joins: 0/0} +f [InlPrag=INLINABLE[0]] + :: forall a b c. (C a b, Show c) => a -> b -> c -> String +[LclIdX, + Arity=5, + Unf=Unf{Src=InlineStable, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [60 0 0 0 0] 120 0 + Tmpl= \ (@a_aFi) + (@b_aFj) + (@c_aFk) + ($dC_aFl [Occ=Once1] :: C a_aFi b_aFj) + ($dShow_aFm [Occ=Once1] :: Show c_aFk) + (a_aBl [Occ=Once1] :: a_aFi) + (b_aBm [Occ=Once1] :: b_aFj) + (c_aBn [Occ=Once1] :: c_aFk) -> + ++ + @Char + (($dC_aFl + `cast` (T17966.N:C[0] <a_aFi>_N <b_aFj>_N + :: C a_aFi b_aFj + ~R# (forall c. Show c => a_aFi -> b_aFj -> c -> String))) + @c_aFk $dShow_aFm a_aBl b_aBm c_aBn) + (GHC.CString.unpackCString# "!"#)}, + RULES: "SPEC f @Bool @() @(Maybe Integer)" [0] + forall ($dC_sRM :: C Bool ()) ($dShow_sRN :: Show (Maybe Integer)). + f @Bool @() @(Maybe Integer) $dC_sRM $dShow_sRN + = $sf_sRO] +f = \ (@a_aFi) + (@b_aFj) + (@c_aFk) + ($dC_aFl :: C a_aFi b_aFj) + ($dShow_aFm :: Show c_aFk) + (a_aBl :: a_aFi) + (b_aBm :: b_aFj) + (c_aBn :: c_aFk) -> + GHC.Base.build + @Char + (\ (@b_aQz) + (c_aQA [OS=OneShot] :: Char -> b_aQz -> b_aQz) + (n_aQB [OS=OneShot] :: b_aQz) -> + GHC.Base.foldr + @Char + @b_aQz + c_aQA + (GHC.CString.unpackFoldrCString# @b_aQz "!"# c_aQA n_aQB) + (($dC_aFl + `cast` (T17966.N:C[0] <a_aFi>_N <b_aFj>_N + :: C a_aFi b_aFj + ~R# (forall c. Show c => a_aFi -> b_aFj -> c -> String))) + @c_aFk $dShow_aFm a_aBl b_aBm c_aBn)) + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$trModule_sRG :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 20 0}] +$trModule_sRG = "main"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$trModule_sRH :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$trModule_sRH = GHC.Types.TrNameS $trModule_sRG + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$trModule_sRI :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 30 0}] +$trModule_sRI = "T17966"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$trModule_sRJ :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$trModule_sRJ = GHC.Types.TrNameS $trModule_sRI + +-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0} +T17966.$trModule :: GHC.Types.Module +[LclIdX, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +T17966.$trModule = GHC.Types.Module $trModule_sRH $trModule_sRJ + +-- RHS size: {terms: 3, types: 1, coercions: 0, joins: 0/0} +$krep_aPr [InlPrag=[~]] :: GHC.Types.KindRep +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$krep_aPr + = GHC.Types.KindRepTyConApp + GHC.Types.$tcConstraint (GHC.Types.[] @GHC.Types.KindRep) + +-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0} +$krep_aPq [InlPrag=[~]] :: GHC.Types.KindRep +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$krep_aPq = GHC.Types.KindRepFun GHC.Types.krep$* $krep_aPr + +-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0} +$krep_aPp [InlPrag=[~]] :: GHC.Types.KindRep +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$krep_aPp = GHC.Types.KindRepFun GHC.Types.krep$* $krep_aPq + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$tcC_sRK :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 20 0}] +$tcC_sRK = "C"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$tcC_sRL :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$tcC_sRL = GHC.Types.TrNameS $tcC_sRK + +-- RHS size: {terms: 7, types: 0, coercions: 0, joins: 0/0} +T17966.$tcC :: GHC.Types.TyCon +[LclIdX, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +T17966.$tcC + = GHC.Types.TyCon + 12503088876068780286##64 + 926716241154773768##64 + T17966.$trModule + $tcC_sRL + 0# + $krep_aPp + +-- RHS size: {terms: 10, types: 7, coercions: 4, joins: 0/0} +x :: String +[LclIdX, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=False, ConLike=False, + WorkFree=False, Expandable=False, Guidance=IF_ARGS [] 120 0}] +x = f @Bool + @() + @(Maybe Integer) + (($cm_aHo @() GHC.Show.$fShow()) + `cast` (Sym (T17966.N:C[0] <Bool>_N <()>_N) + :: (forall c. Show c => Bool -> () -> c -> String) ~R# C Bool ())) + (GHC.Show.$fShowMaybe @Integer GHC.Show.$fShowInteger) + GHC.Types.True + GHC.Tuple.() + (GHC.Maybe.Just @Integer (GHC.Num.Integer.IS 42#)) + + + diff --git a/testsuite/tests/simplCore/should_compile/T19644.hs b/testsuite/tests/simplCore/should_compile/T19644.hs new file mode 100644 index 0000000000..01f9f54f5e --- /dev/null +++ b/testsuite/tests/simplCore/should_compile/T19644.hs @@ -0,0 +1,20 @@ +-- {-# OPTIONS_GHC -Wincomplete-patterns -fforce-recomp #-} +-- {-# OPTIONS_GHC -O2 -fforce-recomp #-} +-- {-# LANGUAGE PatternSynonyms #-} +-- {-# LANGUAGE BangPatterns #-} +-- {-# LANGUAGE MagicHash, UnboxedTuples #-} +module T19644 where + +class C a where + m :: Show b => a -> b -> String + dummy :: a -> () -- Force a datatype dictionary representation + +instance C Int where + m a b = show a ++ show b + dummy _ = () + +f :: (C a, Show b) => a -> b -> String +f a b = m a b ++ "!" +{-# INLINABLE[0] f #-} + +main = putStrLn (f (42::Int) (True::Bool)) diff --git a/testsuite/tests/simplCore/should_compile/T19644.stderr b/testsuite/tests/simplCore/should_compile/T19644.stderr new file mode 100644 index 0000000000..e2c0e09e66 --- /dev/null +++ b/testsuite/tests/simplCore/should_compile/T19644.stderr @@ -0,0 +1,246 @@ + +==================== Specialise ==================== +Result size of Specialise + = {terms: 134, types: 114, coercions: 3, joins: 0/0} + +-- RHS size: {terms: 2, types: 1, coercions: 0, joins: 0/0} +$cdummy_aPi :: Int -> () +[LclId, + Arity=1, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, + Guidance=ALWAYS_IF(arity=1,unsat_ok=True,boring_ok=True)}] +$cdummy_aPi = \ _ [Occ=Dead] -> GHC.Tuple.() + +-- RHS size: {terms: 17, types: 13, coercions: 0, joins: 0/0} +$s$cm_sZO :: Int -> Bool -> [Char] +[LclId, Arity=2] +$s$cm_sZO + = \ (a_aBe :: Int) (b_aBf :: Bool) -> + GHC.Base.augment + @Char + (\ (@b_aQs) + (c_aQt [OS=OneShot] :: Char -> b_aQs -> b_aQs) + (n_aQu [OS=OneShot] :: b_aQs) -> + GHC.Base.foldr + @Char + @b_aQs + c_aQt + n_aQu + (case a_aBe of { GHC.Types.I# n_aQz -> + GHC.Show.itos n_aQz (GHC.Types.[] @Char) + })) + (GHC.Show.$fShowBool_$cshow b_aBf) + +-- RHS size: {terms: 20, types: 17, coercions: 0, joins: 0/0} +$cm_aP5 :: forall b. Show b => Int -> b -> String +[LclId, + Arity=3, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [30 20 0] 130 40}, + RULES: "SPEC $cm @Bool" + forall ($dShow_sZN :: Show Bool). + $cm_aP5 @Bool $dShow_sZN + = $s$cm_sZO] +$cm_aP5 + = \ (@b_aP8) + ($dShow_aP9 :: Show b_aP8) + (a_aBe :: Int) + (b_aBf :: b_aP8) -> + GHC.Base.augment + @Char + (\ (@b_aQs) + (c_aQt [OS=OneShot] :: Char -> b_aQs -> b_aQs) + (n_aQu [OS=OneShot] :: b_aQs) -> + GHC.Base.foldr + @Char + @b_aQs + c_aQt + n_aQu + (case a_aBe of { GHC.Types.I# n_aQz -> + GHC.Show.itos n_aQz (GHC.Types.[] @Char) + })) + (show @b_aP8 $dShow_aP9 b_aBf) + +-- RHS size: {terms: 3, types: 1, coercions: 0, joins: 0/0} +T19644.$fCInt [InlPrag=CONLIKE] :: C Int +[LclIdX[DFunId], + Unf=DFun: \ -> T19644.C:C TYPE: Int $cm_aP5 $cdummy_aPi] +T19644.$fCInt = T19644.C:C @Int $cm_aP5 $cdummy_aPi + +-- RHS size: {terms: 16, types: 12, coercions: 0, joins: 0/0} +$sf_sZM [InlPrag=[0]] :: Int -> Bool -> [Char] +[LclId, Arity=2] +$sf_sZM + = \ (a_aBi :: Int) (b_aBj :: Bool) -> + GHC.Base.build + @Char + (\ (@b_aQT) + (c_aQU [OS=OneShot] :: Char -> b_aQT -> b_aQT) + (n_aQV [OS=OneShot] :: b_aQT) -> + GHC.Base.foldr + @Char + @b_aQT + c_aQU + (GHC.CString.unpackFoldrCString# @b_aQT "!"# c_aQU n_aQV) + ($cm_aP5 @Bool GHC.Show.$fShowBool a_aBi b_aBj)) + +-- RHS size: {terms: 21, types: 19, coercions: 0, joins: 0/0} +f [InlPrag=INLINABLE[0]] + :: forall a b. (C a, Show b) => a -> b -> String +[LclIdX, + Arity=4, + Unf=Unf{Src=InlineStable, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [30 0 0 0] 120 0 + Tmpl= \ (@a_aOm) + (@b_aOn) + ($dC_aOo [Occ=Once1] :: C a_aOm) + ($dShow_aOp [Occ=Once1] :: Show b_aOn) + (a_aBi [Occ=Once1] :: a_aOm) + (b_aBj [Occ=Once1] :: b_aOn) -> + ++ + @Char + (m @a_aOm $dC_aOo @b_aOn $dShow_aOp a_aBi b_aBj) + (GHC.CString.unpackCString# "!"#)}, + RULES: "SPEC f @Int @Bool" [0] + forall ($dC_sZK :: C Int) ($dShow_sZL :: Show Bool). + f @Int @Bool $dC_sZK $dShow_sZL + = $sf_sZM] +f = \ (@a_aOm) + (@b_aOn) + ($dC_aOo :: C a_aOm) + ($dShow_aOp :: Show b_aOn) + (a_aBi :: a_aOm) + (b_aBj :: b_aOn) -> + GHC.Base.build + @Char + (\ (@b_aQT) + (c_aQU [OS=OneShot] :: Char -> b_aQT -> b_aQT) + (n_aQV [OS=OneShot] :: b_aQT) -> + GHC.Base.foldr + @Char + @b_aQT + c_aQU + (GHC.CString.unpackFoldrCString# @b_aQT "!"# c_aQU n_aQV) + (m @a_aOm $dC_aOo @b_aOn $dShow_aOp a_aBi b_aBj)) + +-- RHS size: {terms: 6, types: 2, coercions: 0, joins: 0/0} +main_sZC :: String +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=False, ConLike=False, + WorkFree=False, Expandable=False, Guidance=IF_ARGS [] 60 0}] +main_sZC + = f @Int + @Bool + T19644.$fCInt + GHC.Show.$fShowBool + (GHC.Types.I# 42#) + GHC.Types.True + +-- RHS size: {terms: 4, types: 0, coercions: 0, joins: 0/0} +main_sZD + :: GHC.Prim.State# GHC.Prim.RealWorld + -> (# GHC.Prim.State# GHC.Prim.RealWorld, () #) +[LclId, + Arity=1, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 40 60}] +main_sZD + = GHC.IO.Handle.Text.hPutStr2 + GHC.IO.Handle.FD.stdout main_sZC GHC.Types.True + +-- RHS size: {terms: 1, types: 0, coercions: 3, joins: 0/0} +main :: IO () +[LclIdX, + Arity=1, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, + Guidance=ALWAYS_IF(arity=0,unsat_ok=True,boring_ok=True)}] +main + = main_sZD + `cast` (Sym (GHC.Types.N:IO[0] <()>_R) + :: (GHC.Prim.State# GHC.Prim.RealWorld + -> (# GHC.Prim.State# GHC.Prim.RealWorld, () #)) + ~R# IO ()) + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$trModule_sZE :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 20 0}] +$trModule_sZE = "main"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$trModule_sZF :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$trModule_sZF = GHC.Types.TrNameS $trModule_sZE + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$trModule_sZG :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 30 0}] +$trModule_sZG = "T19644"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$trModule_sZH :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$trModule_sZH = GHC.Types.TrNameS $trModule_sZG + +-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0} +T19644.$trModule :: GHC.Types.Module +[LclIdX, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +T19644.$trModule = GHC.Types.Module $trModule_sZF $trModule_sZH + +-- RHS size: {terms: 3, types: 1, coercions: 0, joins: 0/0} +$krep_aPH [InlPrag=[~]] :: GHC.Types.KindRep +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$krep_aPH + = GHC.Types.KindRepTyConApp + GHC.Types.$tcConstraint (GHC.Types.[] @GHC.Types.KindRep) + +-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0} +$krep_aPG [InlPrag=[~]] :: GHC.Types.KindRep +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$krep_aPG = GHC.Types.KindRepFun GHC.Types.krep$* $krep_aPH + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$tcC_sZI :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 20 0}] +$tcC_sZI = "C"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$tcC_sZJ :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$tcC_sZJ = GHC.Types.TrNameS $tcC_sZI + +-- RHS size: {terms: 7, types: 0, coercions: 0, joins: 0/0} +T19644.$tcC :: GHC.Types.TyCon +[LclIdX, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +T19644.$tcC + = GHC.Types.TyCon + 3363473062474234294##64 + 5379444656532611026##64 + T19644.$trModule + $tcC_sZJ + 0# + $krep_aPG + + + diff --git a/testsuite/tests/simplCore/should_compile/T6056.stderr b/testsuite/tests/simplCore/should_compile/T6056.stderr index 7706318b4d..461ba97c70 100644 --- a/testsuite/tests/simplCore/should_compile/T6056.stderr +++ b/testsuite/tests/simplCore/should_compile/T6056.stderr @@ -1,5 +1,4 @@ Rule fired: SPEC/T6056 $wsmallerAndRest @Int (T6056) Rule fired: SPEC/T6056 $wsmallerAndRest @Int (T6056) -Rule fired: Class op < (BUILTIN) Rule fired: SPEC/T6056 $wsmallerAndRest @Int (T6056) Rule fired: SPEC/T6056 $wsmallerAndRest @Int (T6056) diff --git a/testsuite/tests/simplCore/should_compile/T7785.stderr b/testsuite/tests/simplCore/should_compile/T7785.stderr index f0187fe958..f2f819f89a 100644 --- a/testsuite/tests/simplCore/should_compile/T7785.stderr +++ b/testsuite/tests/simplCore/should_compile/T7785.stderr @@ -1,8 +1,408 @@ -==================== Tidy Core rules ==================== -"SPEC shared @[]" - forall ($dMyFunctor :: MyFunctor []) (irred :: Domain [] Int). - shared @[] $dMyFunctor irred - = bar_$sshared +==================== Specialise ==================== +Result size of Specialise + = {terms: 293, types: 99, coercions: 11, joins: 0/2} + +-- RHS size: {terms: 5, types: 10, coercions: 0, joins: 0/0} +$cmyfmap_aG0 + :: forall a b. (Domain [] a, Domain [] b) => (a -> b) -> [a] -> [b] +[LclId, + Arity=4, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, + Guidance=ALWAYS_IF(arity=2,unsat_ok=True,boring_ok=True)}] +$cmyfmap_aG0 + = \ (@a_aG3) (@b_aG4) _ [Occ=Dead] _ [Occ=Dead] -> + map @a_aG3 @b_aG4 + +-- RHS size: {terms: 1, types: 0, coercions: 3, joins: 0/0} +Foo.$fMyFunctor[] [InlPrag=CONLIKE] :: MyFunctor [] +[LclIdX[DFunId(nt)], + Arity=4, + Unf=DFun: \ -> Foo.C:MyFunctor TYPE: [] $cmyfmap_aG0] +Foo.$fMyFunctor[] + = $cmyfmap_aG0 + `cast` (Sym (Foo.N:MyFunctor[0] <[]>_N) + :: (forall a b. + (Domain [] a, Domain [] b) => + (a -> b) -> [a] -> [b]) + ~R# MyFunctor []) + +-- RHS size: {terms: 114, types: 12, coercions: 0, joins: 0/1} +$sshared_sHu :: Domain [] Int => [Int] -> [Int] +[LclId, Arity=1] +$sshared_sHu + = \ (irred_azD :: Domain [] Int) -> + let { + f_sHt :: [Int] -> [Int] + [LclId] + f_sHt + = myfmap + @[] + Foo.$fMyFunctor[] + @Int + @Int + irred_azD + irred_azD + GHC.Num.$fNumInt_$cnegate } in + \ (x_X4N :: [Int]) -> + f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + (f_sHt + x_X4N)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) + +-- RHS size: {terms: 116, types: 16, coercions: 0, joins: 0/1} +shared + :: forall (f :: * -> *). + (MyFunctor f, Domain f Int) => + f Int -> f Int +[LclIdX, + Arity=2, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=NEVER}, + RULES: "SPEC shared @[]" + forall ($dMyFunctor_sHr :: MyFunctor []). + shared @[] $dMyFunctor_sHr + = $sshared_sHu] +shared + = \ (@(f_azB :: * -> *)) + ($dMyFunctor_azC :: MyFunctor f_azB) + (irred_azD :: Domain f_azB Int) -> + let { + f_sHq :: f_azB Int -> f_azB Int + [LclId] + f_sHq + = myfmap + @f_azB + $dMyFunctor_azC + @Int + @Int + irred_azD + irred_azD + GHC.Num.$fNumInt_$cnegate } in + \ (x_X4N :: f_azB Int) -> + f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + (f_sHq + x_X4N)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) + +-- RHS size: {terms: 8, types: 4, coercions: 4, joins: 0/0} +foo :: [Int] -> [Int] +[LclIdX, + Arity=1, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [0] 60 0}] +foo + = \ (xs_axd :: [Int]) -> + shared + @[] + Foo.$fMyFunctor[] + (GHC.Classes.(%%) + `cast` (Sub (Sym (Foo.D:R:Domain[]a[0] <Int>_N)) + :: (() :: Constraint) ~R# Domain [] Int)) + (GHC.Types.: @Int (GHC.Types.I# 0#) xs_axd) + +-- RHS size: {terms: 8, types: 4, coercions: 4, joins: 0/0} +bar :: [Int] -> [Int] +[LclIdX, + Arity=1, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [0] 60 10}] +bar + = \ (xs_axe :: [Int]) -> + GHC.Types.: + @Int + (GHC.Types.I# 0#) + (shared + @[] + Foo.$fMyFunctor[] + (GHC.Classes.(%%) + `cast` (Sub (Sym (Foo.D:R:Domain[]a[0] <Int>_N)) + :: (() :: Constraint) ~R# Domain [] Int)) + xs_axe) + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$trModule_sHj :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 20 0}] +$trModule_sHj = "main"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$trModule_sHk :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$trModule_sHk = GHC.Types.TrNameS $trModule_sHj + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$trModule_sHl :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 20 0}] +$trModule_sHl = "Foo"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$trModule_sHm :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$trModule_sHm = GHC.Types.TrNameS $trModule_sHl + +-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0} +Foo.$trModule :: GHC.Types.Module +[LclIdX, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +Foo.$trModule = GHC.Types.Module $trModule_sHk $trModule_sHm + +-- RHS size: {terms: 3, types: 1, coercions: 0, joins: 0/0} +$krep_aGA [InlPrag=[~]] :: GHC.Types.KindRep +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$krep_aGA + = GHC.Types.KindRepTyConApp + GHC.Types.$tcConstraint (GHC.Types.[] @GHC.Types.KindRep) + +-- RHS size: {terms: 3, types: 0, coercions: 0, joins: 0/0} +$krep_aGz [InlPrag=[~]] :: GHC.Types.KindRep +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$krep_aGz = GHC.Types.KindRepFun GHC.Types.krep$*Arr* $krep_aGA + +-- RHS size: {terms: 1, types: 0, coercions: 0, joins: 0/0} +$tcMyFunctor_sHn :: GHC.Prim.Addr# +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 40 0}] +$tcMyFunctor_sHn = "MyFunctor"# + +-- RHS size: {terms: 2, types: 0, coercions: 0, joins: 0/0} +$tcMyFunctor_sHo :: GHC.Types.TrName +[LclId, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +$tcMyFunctor_sHo = GHC.Types.TrNameS $tcMyFunctor_sHn + +-- RHS size: {terms: 7, types: 0, coercions: 0, joins: 0/0} +Foo.$tcMyFunctor :: GHC.Types.TyCon +[LclIdX, + Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, + WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 10}] +Foo.$tcMyFunctor + = GHC.Types.TyCon + 12837160846121910345##64 + 787075802864859973##64 + Foo.$trModule + $tcMyFunctor_sHo + 0# + $krep_aGz + diff --git a/testsuite/tests/simplCore/should_compile/all.T b/testsuite/tests/simplCore/should_compile/all.T index 8cdf5a5417..02a5de56c6 100644 --- a/testsuite/tests/simplCore/should_compile/all.T +++ b/testsuite/tests/simplCore/should_compile/all.T @@ -136,7 +136,9 @@ test('T5366', test('T7796', [], makefile_test, ['T7796']) test('T5550', omit_ways(prof_ways), compile, ['']) test('T7865', normal, makefile_test, ['T7865']) -test('T7785', only_ways(['optasm']), compile, ['-ddump-rules']) +# T7785: Check that we generate the specialising RULE. Might not be listed in +# -ddump-rules because of Note [Trimming auto-rules], hence grep +test('T7785', [ only_ways(['optasm']), grep_errmsg(r'RULE') ], compile, ['-ddump-spec']) test('T7702', [extra_files(['T7702plugin']), pre_cmd('$MAKE -s --no-print-directory -C T7702plugin package.T7702 TOP={top}'), @@ -308,9 +310,6 @@ test('T17901', makefile_test, ['T17901']) test('T17930', [ grep_errmsg(r'^\$sfoo') ], compile, ['-O -ddump-spec -dsuppress-uniques -dsuppress-idinfo']) test('spec004', [ grep_errmsg(r'\$sfoo') ], compile, ['-O -ddump-spec -dsuppress-uniques']) -test('T17966', - normal, - makefile_test, ['T17966']) # NB: T17810: -fspecialise-aggressively test('T17810', normal, multimod_compile, ['T17810', '-fspecialise-aggressively -dcore-lint -O -v0']) test('T18013', normal, multimod_compile, ['T18013', '-v0 -O']) @@ -399,3 +398,8 @@ test('T20040', [ grep_errmsg(r'ifoldl\''), expect_broken(20040) ], compile, ['-O # Key here is that yes* become visibly trivial due to eta-reduction, while no* are not eta-reduced. test('T21261', [ grep_errmsg(r'^(yes|no)') ], compile, ['-O -ddump-simpl -dno-typeable-binds -dsuppress-all -dsuppress-uniques']) + +# We expect to see a SPEC rule for $cm +test('T17966', [ grep_errmsg(r'SPEC') ], compile, ['-O -ddump-spec']) +# We expect to see a SPEC rule for $cm +test('T19644', [ grep_errmsg(r'SPEC') ], compile, ['-O -ddump-spec']) |