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<h3>
Marge Bot pushed to branch wip/marge_bot_batch_merge_job
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/e1aa40525ddac370766907a49682976e2ea78422">e1aa4052</a></strong>
<div>
<span>by PHO</span>
<i>at 2020-03-17T11:36:09Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Don't use non-portable operator "==" in configure.ac
The test operator "==" is a Bash extension and produces a wrong result
if /bin/sh is not Bash.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/89f034ddeb4ad7d93c877d5bdbcf2cca7a44f79c">89f034dd</a></strong>
<div>
<span>by Maximilian Tagher</span>
<i>at 2020-03-17T11:36:48Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Document the units of -ddump-timings
Right now, in the output of -ddump-timings to a file, you can't tell what the units are:
```
CodeGen [TemplateTestImports]: alloc=22454880 time=14.597
```
I believe bytes/milliseconds are the correct units, but confirmation would be appreciated. I'm basing it off of this snippet from `withTiming'`:
```
when (verbosity dflags >= 2 && prtimings == PrintTimings)
$ liftIO $ logInfo dflags (defaultUserStyle dflags)
(text "!!!" <+> what <> colon <+> text "finished in"
<+> doublePrec 2 time
<+> text "milliseconds"
<> comma
<+> text "allocated"
<+> doublePrec 3 (realToFrac alloc / 1024 / 1024)
<+> text "megabytes")
```
which implies time is in milliseconds, and allocations in bytes (which divided by 1024 would be KB, and again would be MB)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/beffa14771ebd6ba24b20337f29045364621c5fa">beffa147</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-03-17T11:37:25Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Implement mapTyCo like foldTyCo
This patch makes mapType use the successful idiom described
in TyCoRep
Note [Specialising foldType]
I have not yet changed any functions to use mapType, though there
may be some suitable candidates.
This patch should be a no-op in terms of functionality but,
because it inlines the mapper itself, I'm hoping that there may
be some modest perf improvements.
Metric Decrease:
T5631
T5642
T3064
T9020
T14683
hie002
haddock.Cabal
haddock.base
haddock.compiler
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/5800ebfeb2fe3e3ed985cdf08a66defea73db71d">5800ebfe</a></strong>
<div>
<span>by Ömer Sinan Ağacan</span>
<i>at 2020-03-17T11:38:08Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Don't update ModDetails with CafInfos when opts are disabled
This is consistent with the interface file behavior where we omit
HsNoCafRefs annotations with -fomit-interface-pragmas (implied by -O0).
ModDetails and ModIface are just different representations of the same
thing, so they really need to be in sync. This patch does the right
thing and does not need too much explanation, but here's an example of a
problem not doing this causes in !2842:
-- MyInteger.hs
module MyInteger
( MyInteger (MyInteger)
, ToMyInteger (toMyInteger)
) where
newtype MyInteger = MyInteger Integer
class ToMyInteger a where
toMyInteger :: a -> MyInteger
instance ToMyInteger Integer where
toMyInteger = MyInteger {- . succ -}
-- Main.hs
module Main
( main
) where
import MyInteger (MyInteger (MyInteger), toMyInteger)
main :: IO ()
main = do
let (MyInteger i) = (id . toMyInteger) (41 :: Integer)
print i
If I build this with -O0, without this fix, we generate a ModDetails with
accurate LFInfo for toMyInteger (MyInteger.$fToMyIntegerInteger) which says that
it's a LFReEntrant with arity 1. This means in the use site (Main) we tag the
value:
R3 = MyInteger.$fToMyIntegerInteger_closure + 1;
R2 = GHC.Base.id_closure;
R1 = GHC.Base.._closure;
Sp = Sp - 16;
call stg_ap_ppp_fast(R4, R3, R2, R1) args: 24, res: 0, upd: 24;
Now we change the definition by uncommenting the `succ` part and it becomes a thunk:
MyInteger.$fToMyIntegerInteger [InlPrag=INLINE (sat-args=0)]
:: MyInteger.ToMyInteger GHC.Integer.Type.Integer
[GblId[DFunId(nt)]] =
{} \u [] $ctoMyInteger_rEA;
and its LFInfo is now LFThunk. This change in LFInfo makes a difference in the
use site: we can no longer tag it.
But becuase the interface fingerprint does not change (because ModIface does not
change) we don't rebuild Main and tag the thunk.
(1.2% increase in allocations when building T12545 on armv7 because we
generate more code without CafInfos)
Metric Increase:
T12545
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/5b632dad2e1d373606fe29f7eee0daf15641560f">5b632dad</a></strong>
<div>
<span>by Paavo</span>
<i>at 2020-03-17T11:38:48Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add example for Data.Semigroup.diff
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/4d85d68b004a3d577c0e27d9e6fdddd118e8a9f3">4d85d68b</a></strong>
<div>
<span>by Paavo</span>
<i>at 2020-03-17T11:38:48Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Clean up
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/75168d07c9c30289709423fc184bbab8dcad0f4e">75168d07</a></strong>
<div>
<span>by Paavo</span>
<i>at 2020-03-17T11:38:48Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Make example collapsible
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/53ff2cd0c49735e8f709ac8a5ceab68483eb89df">53ff2cd0</a></strong>
<div>
<span>by Richard Eisenberg</span>
<i>at 2020-03-17T13:46:57Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix #17021 by checking more return kinds
All the details are in new Note [Datatype return kinds] in
TcTyClsDecls.
Test case: typecheck/should_fail/T17021{,b}
typecheck/should_compile/T17021a
Updates haddock submodule
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/093188bf6ebb8e4dc6f8f2c37346e5df7ce1831d">093188bf</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-03-17T23:15:17Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Modules: Core operations (#13009)
</pre>
</li>
</ul>
<h4>30 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#182d6a315e784018aa9c8b2ad736036b97bd5d48">
compiler/GHC/Core.hs
</a>
</li>
<li class="file-stats">
<a href="#783e5dae6e86931f06700fc088fb7d48c8a07386">
compiler/GHC/Core/Coercion.hs
</a>
</li>
<li class="file-stats">
<a href="#f10ed7a2470454dfdd8691a08beba67d8b78ee70">
compiler/GHC/Core/Coercion/Axiom.hs
</a>
</li>
<li class="file-stats">
<a href="#91648438362e5a35363d2bb7abb04016dedd7d7e">
compiler/GHC/Core/FamInstEnv.hs
</a>
</li>
<li class="file-stats">
<a href="#36a42448a83a9d1f6df8475f03ead2eed199dd8e">
compiler/GHC/Core/Lint.hs
</a>
</li>
<li class="file-stats">
<a href="#35cff95f9f44690fc50b44bbe8ac3c554c7d5a5e">
compiler/GHC/Core/Make.hs
</a>
</li>
<li class="file-stats">
<a href="#e5041b26fef1c846489ee5e1c883bc3d52cc775b">
compiler/simplCore/CSE.hs
→
compiler/GHC/Core/Op/CSE.hs
</a>
</li>
<li class="file-stats">
<a href="#3bb380152f7a13d926e48fe380cdce86d60cf92e">
compiler/simplCore/CallArity.hs
→
compiler/GHC/Core/Op/CallArity.hs
</a>
</li>
<li class="file-stats">
<a href="#7685262a8a145335ec922d0a92ebb4a789bf0a3e">
compiler/prelude/PrelRules.hs
→
compiler/GHC/Core/Op/ConstantFold.hs
</a>
</li>
<li class="file-stats">
<a href="#71a1d84a4a197005a392c1b5efa3eaab370d404b">
compiler/stranal/CprAnal.hs
→
compiler/GHC/Core/Op/CprAnal.hs
</a>
</li>
<li class="file-stats">
<a href="#1419e35d2402c23209a644b054c5a67aa4463451">
compiler/stranal/DmdAnal.hs
→
compiler/GHC/Core/Op/DmdAnal.hs
</a>
</li>
<li class="file-stats">
<a href="#187bf3c2475a80fadeea64106cb7cf84a228c5b8">
compiler/simplCore/Exitify.hs
→
compiler/GHC/Core/Op/Exitify.hs
</a>
</li>
<li class="file-stats">
<a href="#c91bc01a4374fd510bfd57e3818d888393902e29">
compiler/simplCore/FloatIn.hs
→
compiler/GHC/Core/Op/FloatIn.hs
</a>
</li>
<li class="file-stats">
<a href="#e1d5e8c787a59117885861198e4c24effc067d7a">
compiler/simplCore/FloatOut.hs
→
compiler/GHC/Core/Op/FloatOut.hs
</a>
</li>
<li class="file-stats">
<a href="#225664ec66ad2a4158da295cbc31b7e2c5808bdb">
compiler/simplCore/LiberateCase.hs
→
compiler/GHC/Core/Op/LiberateCase.hs
</a>
</li>
<li class="file-stats">
<a href="#2c46e128f5d223ead314574438b750e7d87194f0">
compiler/simplCore/CoreMonad.hs
→
compiler/GHC/Core/Op/Monad.hs
</a>
</li>
<li class="file-stats">
<a href="#bb009683fed637eb9645156acfd483d41af83f10">
compiler/simplCore/CoreMonad.hs-boot
→
compiler/GHC/Core/Op/Monad.hs-boot
</a>
</li>
<li class="file-stats">
<a href="#9e2ce77a946950b2d19d75c55f671c048a5645bd">
compiler/simplCore/OccurAnal.hs
→
compiler/GHC/Core/Op/OccurAnal.hs
</a>
</li>
<li class="file-stats">
<a href="#de7d9d388885ce6e3a45a39fac6e2c36a7f94f69">
compiler/simplCore/SetLevels.hs
→
compiler/GHC/Core/Op/SetLevels.hs
</a>
</li>
<li class="file-stats">
<a href="#e3fe84599ec044fc7aacb062dada32b067732fc8">
compiler/simplCore/Simplify.hs
→
compiler/GHC/Core/Op/Simplify.hs
</a>
</li>
<li class="file-stats">
<a href="#c771c9d0f7d7409d86e6cf310f1a054c6ffc53bd">
compiler/simplCore/SimplCore.hs
→
compiler/GHC/Core/Op/Simplify/Driver.hs
</a>
</li>
<li class="file-stats">
<a href="#f5d3277e26ee59b6887797a464b2745b38dd3c52">
compiler/simplCore/SimplEnv.hs
→
compiler/GHC/Core/Op/Simplify/Env.hs
</a>
</li>
<li class="file-stats">
<a href="#a7f383a05314501084d5d684b61442ce52cd6146">
compiler/simplCore/SimplMonad.hs
→
compiler/GHC/Core/Op/Simplify/Monad.hs
</a>
</li>
<li class="file-stats">
<a href="#b73ea2c5744c45878c8939cf97da70308baa7e48">
compiler/simplCore/SimplUtils.hs
→
compiler/GHC/Core/Op/Simplify/Utils.hs
</a>
</li>
<li class="file-stats">
<a href="#6fd97a6cb77fefdde9bb59d009ce990a69e83d97">
compiler/specialise/SpecConstr.hs
→
compiler/GHC/Core/Op/SpecConstr.hs
</a>
</li>
<li class="file-stats">
<a href="#d52bc1e90d7432064a2998de2a2751b6fecb7680">
compiler/specialise/Specialise.hs
→
compiler/GHC/Core/Op/Specialise.hs
</a>
</li>
<li class="file-stats">
<a href="#6366061090330659c9edb95514cdc1b33b998359">
compiler/simplCore/SAT.hs
→
compiler/GHC/Core/Op/StaticArgs.hs
</a>
</li>
<li class="file-stats">
<a href="#90cd28e7814e722dce869e8376f48cb85b968791">
compiler/GHC/Core/Op/Tidy.hs
</a>
</li>
<li class="file-stats">
<a href="#78f9bff92a7c86d0c1d22ff3449f963bf73f2aab">
compiler/stranal/WorkWrap.hs
→
compiler/GHC/Core/Op/WorkWrap.hs
</a>
</li>
<li class="file-stats">
<a href="#12b764912308026ebf73c88bcb2f60c19c2eaaf9">
compiler/stranal/WwLib.hs
→
compiler/GHC/Core/Op/WorkWrap/Lib.hs
</a>
</li>
</ul>
<h5>The diff was not included because it is too large.</h5>
</div>
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