[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 8 commits: Introduce OutputableP

[Marge Bot]

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


Commits:
ca48076a by Sylvain Henry at 2020-09-17T20:04:08-04:00
Introduce OutputableP

Some types need a Platform value to be pretty-printed: CLabel, Cmm
types, instructions, etc.

Before this patch they had an Outputable instance and the Platform value
was obtained via sdocWithDynFlags. It meant that the *renderer* of the
SDoc was responsible of passing the appropriate Platform value (e.g. via
the DynFlags given to showSDoc).  It put the burden of passing the
Platform value on the renderer while the generator of the SDoc knows the
Platform it is generating the SDoc for and there is no point passing a
different Platform at rendering time.

With this patch, we introduce a new OutputableP class:

   class OutputableP a where
      pdoc :: Platform -> a -> SDoc

With this class we still have some polymorphism as we have with `ppr`
(i.e. we can use `pdoc` on a variety of types instead of having a
dedicated `pprXXX` function for each XXX type).

One step closer removing `sdocWithDynFlags` (#10143) and supporting
several platforms (#14335).

- - - - -
e45c8544 by Sylvain Henry at 2020-09-17T20:04:08-04:00
Generalize OutputableP

Add a type parameter for the environment required by OutputableP. It
avoids tying Platform with OutputableP.

- - - - -
37aa224a by Sylvain Henry at 2020-09-17T20:04:08-04:00
Add note about OutputableP

- - - - -
7f2785f2 by Sylvain Henry at 2020-09-17T20:04:08-04:00
Remove pprPrec from Outputable (unused)

- - - - -
b689f3db by Sylvain Henry at 2020-09-17T20:04:46-04:00
Bignum: add clamping naturalToWord (fix #18697)

- - - - -
bddc268a by Ben Gamari at 2020-09-17T20:35:32-04:00
rts/nonmoving: Add missing STM write barrier

When updating a TRec for a TVar already part of a transaction we
previously neglected to add the old value to the update remembered set.
I suspect this was the cause of #18587.

- - - - -
40ab5ee1 by Ben Gamari at 2020-09-17T20:35:33-04:00
rts: Refactor foreign export tracking

This avoids calling `libc` in the initializers which are responsible for
registering foreign exports. We believe this should avoid the corruption
observed in #18548.

See Note [Tracking foreign exports] in rts/ForeignExports.c for an
overview of the new scheme.

- - - - -
6fa917e0 by Ben Gamari at 2020-09-17T20:35:33-04:00
rts: Refactor unloading of foreign export StablePtrs

Previously we would allocate a linked list cell for each foreign export.
Now we can avoid this by taking advantage of the fact that they are
already broken into groups.

- - - - -


30 changed files:

- compiler/GHC/Cmm.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/DebugBlock.hs
- compiler/GHC/Cmm/Info/Build.hs
- compiler/GHC/Cmm/LayoutStack.hs
- compiler/GHC/Cmm/Lint.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Pipeline.hs
- compiler/GHC/Cmm/Ppr.hs
- compiler/GHC/Cmm/Ppr/Decl.hs
- compiler/GHC/Cmm/Ppr/Expr.hs
- compiler/GHC/Cmm/ProcPoint.hs
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/CFG.hs
- compiler/GHC/CmmToAsm/Dwarf.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/Ppr.hs
- compiler/GHC/CmmToAsm/Reg/Graph.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Stats.hs
- compiler/GHC/CmmToAsm/Reg/Liveness.hs
- compiler/GHC/CmmToAsm/SPARC.hs
- compiler/GHC/CmmToAsm/SPARC/CodeGen.hs
- compiler/GHC/CmmToAsm/SPARC/CodeGen/CondCode.hs
- compiler/GHC/CmmToAsm/SPARC/CodeGen/Gen64.hs
- compiler/GHC/CmmToAsm/SPARC/CodeGen/Sanity.hs
- compiler/GHC/CmmToAsm/SPARC/Ppr.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bd73fa40bf83d4f37b69f1bcda30152a84413aa1...6fa917e05113518b24225c3ef85205be22c4b005

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/bd73fa40bf83d4f37b69f1bcda30152a84413aa1...6fa917e05113518b24225c3ef85205be22c4b005
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