[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 16 commits: Add test for T18574

Thu Oct 1 23:10:06 UTC 2020

 Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC

Commits:
0bb02873 by Sylvain Henry at 2020-10-01T18:34:53-04:00
Add test for T18574

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e393f213 by Sylvain Henry at 2020-10-01T18:34:53-04:00
Allow fusion with catMaybes (#18574)

Metric Decrease:
   T18574

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d2cfad96 by Fendor at 2020-10-01T18:35:33-04:00
Add mainModuleNameIs and demote mainModIs

Add `mainModuleNameIs` to DynFlags and demote
`mainModIs` to function which uses the homeUnit from DynFlags
it is created from.

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fc351ab8 by Fendor at 2020-10-01T18:35:33-04:00
Use HomeUnit for main module without module declaration

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dca1cb22 by Fendor at 2020-10-01T18:35:33-04:00
Remove mAIN completely

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a5aaceec by Sylvain Henry at 2020-10-01T18:36:11-04:00
Use ADTs for parser errors/warnings

Haskell and Cmm parsers/lexers now report errors and warnings using ADTs
defined in GHC.Parser.Errors. They can be printed using functions in
GHC.Parser.Errors.Ppr.

Some of the errors provide hints with a separate ADT (e.g. to suggest to
turn on some extension). For now, however, hints are not consistent
across all messages. For example some errors contain the hints in the
main message. I didn't want to change any message with this patch. I
expect these changes to be discussed and implemented later.

Surprisingly, this patch enhances performance. On CI
(x86_64/deb9/hadrian, ghc/alloc):

   parsing001         -11.5%
   T13719             -2.7%
   MultiLayerModules  -3.5%
   Naperian           -3.1%

Bump haddock submodule

Metric Decrease:
    MultiLayerModules
    Naperian
    T13719
    parsing001

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a946c7ef by Sylvain Henry at 2020-10-01T18:36:11-04:00
Less DynFlags in Header parsing

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dafe7943 by Sylvain Henry at 2020-10-01T18:36:11-04:00
Parser: remove some unused imports

These are not reported by GHC because Happy adds {-# OPTIONS_GHC -w #-}

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93d5de16 by Sylvain Henry at 2020-10-01T18:36:11-04:00
Don't import GHC.Unit to reduce the number of dependencies

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e3655f81 by Sebastian Graf at 2020-10-01T18:36:47-04:00
Don't attach CPR signatures to NOINLINE data structures (#18154)

Because the generated `KindRep`s don't have an unfolding, !3230 did not
actually stop to compute, attach and serialise unnecessary CPR
signatures for them. As already said in
`Note [CPR for data structures]`, that leads to bloated interface
files which is ultimately quadratic for Nested CPR.

So we don't attach any CPR signature to bindings that

  * Are not thunks (because thunks are not in WHNF)
  * Have arity 0 (which means the top-level constructor is not a lambda)

If the data structure has an unfolding, we continue to look through it.
If not (as is the case for `KindRep`s), we look at the unchanged CPR
signature and see `topCprType`, as expected.

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ba5965eb by Richard Eisenberg at 2020-10-01T18:37:23-04:00
Add regression test for #18755.

Close #18755

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a8018c17 by Vladislav Zavialov at 2020-10-01T18:37:58-04:00
Fix pretty-printing of the mult-polymorphic arrow

A follow-up to !4020 (5830a12c46e7227c276a8a71213057595ee4fc04)

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e5523324 by Sylvain Henry at 2020-10-01T18:38:35-04:00
Bignum: add integerNegate RULE

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1edd6d21 by Vladislav Zavialov at 2020-10-01T18:39:10-04:00
Refactor: remove rnHsDoc

It did not do any useful work.

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9895abc9 by Krzysztof Gogolewski at 2020-10-01T19:09:57-04:00
Fix typos in comments

[skip ci]

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556bd11e by Icelandjack at 2020-10-01T19:09:59-04:00
Replaced MkT1 with T1 in type signatures.
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30 changed files:

- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/Lexer.x
- compiler/GHC/Cmm/Monad.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToByteCode.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/Backpack/Syntax.hs
- compiler/GHC/Driver/Finder.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Session.hs

The diff was not included because it is too large.

View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b07ba5ea2b680f3653b67552d16178f06cf84ddd...556bd11e3a607ca5ddd2006e46cd9e7b5683f068

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b07ba5ea2b680f3653b67552d16178f06cf84ddd...556bd11e3a607ca5ddd2006e46cd9e7b5683f068
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