[Git][ghc/ghc][wip/T18580] 6 commits: Add HomeUnit type

[Ben Gamari]

Ben Gamari pushed to branch wip/T18580 at Glasgow Haskell Compiler / GHC


Commits:
ffc0d578 by Sylvain Henry at 2020-08-13T09:49:56-04:00
Add HomeUnit type

Since Backpack the "home unit" is much more involved than what it was
before (just an identifier obtained with `-this-unit-id`). Now it is
used in conjunction with `-component-id` and `-instantiated-with` to
configure module instantiations and to detect if we are type-checking an
indefinite unit or compiling a definite one.

This patch introduces a new HomeUnit datatype which is much easier to
understand. Moreover to make GHC support several packages in the same
instances, we will need to handle several HomeUnits so having a
dedicated (documented) type is helpful.

Finally in #14335 we will also need to handle the case where we have no
HomeUnit at all because we are only loading existing interfaces for
plugins which live in a different space compared to units used to
produce target code. Several functions will have to be refactored to
accept "Maybe HomeUnit" parameters instead of implicitly querying the
HomeUnit fields in DynFlags. Having a dedicated type will make this
easier.

Bump haddock submodule

- - - - -
8a51b2ab by Sylvain Henry at 2020-08-13T21:09:15-04:00
Make IOEnv monad one-shot (#18202)

On CI (x86_64-linux-deb9-hadrian, compile_time/bytes_allocated):

    T10421     -1.8%    (threshold: +/- 1%)
    T10421a    -1.7%    (threshold: +/- 1%)
    T12150     -4.9%    (threshold: +/- 2%)
    T12227     -1.6     (threshold: +/- 1%)
    T12425     -1.5%    (threshold: +/- 1%)
    T12545     -3.8%    (threshold: +/- 1%)
    T12707     -3.0%    (threshold: +/- 1%)
    T13035     -3.0%    (threshold: +/- 1%)
    T14683     -10.3%   (threshold: +/- 2%)
    T3064      -6.9%    (threshold: +/- 2%)
    T4801      -4.3%    (threshold: +/- 2%)
    T5030      -2.6%    (threshold: +/- 2%)
    T5321FD    -3.6%    (threshold: +/- 2%)
    T5321Fun   -4.6%    (threshold: +/- 2%)
    T5631      -19.7%   (threshold: +/- 2%)
    T5642      -13.0%   (threshold: +/- 2%)
    T783       -2.7     (threshold: +/- 2%)
    T9020      -11.1    (threshold: +/- 2%)
    T9961      -3.4%    (threshold: +/- 2%)

    T1969 (compile_time/bytes_allocated)  -2.2%  (threshold: +/-1%)
    T1969 (compile_time/max_bytes_used)   +24.4% (threshold: +/-20%)

Additionally on other CIs:

    haddock.Cabal                  -10.0%   (threshold: +/- 5%)
    haddock.compiler               -9.5%    (threshold: +/- 5%)
    haddock.base (max bytes used)  +24.6%   (threshold: +/- 15%)
    T10370 (max bytes used, i386)  +18.4%   (threshold: +/- 15%)

Metric Decrease:
    T10421
    T10421a
    T12150
    T12227
    T12425
    T12545
    T12707
    T13035
    T14683
    T3064
    T4801
    T5030
    T5321FD
    T5321Fun
    T5631
    T5642
    T783
    T9020
    T9961
    haddock.Cabal
    haddock.compiler
Metric Decrease 'compile_time/bytes allocated':
    T1969
Metric Increase 'compile_time/max_bytes_used':
    T1969
    T10370
    haddock.base

- - - - -
9f66fdf6 by Ben Gamari at 2020-08-14T15:50:34-04:00
testsuite: Drop --io-manager flag from testsuite configuration

This is no longer necessary as there are now dedicated testsuite ways
which run tests with WinIO.

- - - - -
55fd1dc5 by Ben Gamari at 2020-08-14T15:51:10-04:00
llvm-targets: Add i686 targets

Addresses #18422.

- - - - -
6e2ef839 by Ben Gamari at 2020-08-17T09:18:06-04:00
Clean up TBDs in changelog

- - - - -
f0778044 by Ben Gamari at 2020-08-17T09:21:04-04:00
base: Fail if `timeout` is used when exceptions are masked

As pointed out in #18580, `timeout`'s implementation assumes that
exceptions will be handled. Document and assert this precondition.

Fixes #18580.

- - - - -


30 changed files:

- compiler/GHC.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Data/IOEnv.hs
- compiler/GHC/Driver/Backpack.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
- compiler/GHC/Driver/Types.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Usage.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Recomp/Flags.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Linker.hs
- compiler/GHC/SysTools.hs
- compiler/GHC/SysTools/ExtraObj.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/Utils/Backpack.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bde38aa1fe6a72311af4c650ae0608e057dc6750...f07780443c659b979e73f4c704f11daa8f1bf62e

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bde38aa1fe6a72311af4c650ae0608e057dc6750...f07780443c659b979e73f4c704f11daa8f1bf62e
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