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This switches the compiler/ component to get compiled with
-XNoImplicitPrelude and a `import GhcPrelude` is inserted in all
modules.
This is motivated by the upcoming "Prelude" re-export of
`Semigroup((<>))` which would cause lots of name clashes in every
modulewhich imports also `Outputable`
Reviewers: austin, goldfire, bgamari, alanz, simonmar
Reviewed By: bgamari
Subscribers: goldfire, rwbarton, thomie, mpickering, bgamari
Differential Revision: https://phabricator.haskell.org/D3989
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Previously this logic was duplicated needlessly.
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These were previously just represented as Ints which was needlessly
vague.
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Summary:
Rework llvmGen to use LLVM 3.6 exclusively. The plans for the 7.12 release are to ship LLVM alongside GHC in the interests of user (and developer) sanity.
Along the way, refactor TNTC support to take advantage of the new `prefix` data support in LLVM 3.6. This allows us to drop the section-reordering component of the LLVM mangler.
Test Plan: Validate, look at emitted code
Reviewers: dterei, austin, scpmw
Reviewed By: austin
Subscribers: erikd, awson, spacekitteh, thomie, carter
Differential Revision: https://phabricator.haskell.org/D530
GHC Trac Issues: #10074
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Signed-off-by: Austin Seipp <austin@well-typed.com>
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Slightly more documentation, removed unused label map (huh),
removed MonadIO instance on LlvmM to improve encapsulation.
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This patch reworks some parts of the LLVM pretty-printing code that were
still using Show and String. Now we should be using SDoc and Outputable
throughout. Note that many get*Name functions become pp*Name
here as a side-effect.
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- MetaArgs is not needed, as variables are already meta data
- Same goes for MetaVal - its only reason for existing seems to be to
support LLVM's strange pretty-printing for meta-data annotations, and
I feel that is better to keep the data structure clean and handle it in
the pretty-printing instead.
- Rename "MetaData" to "MetaAnnot". Meta-data is still meta-data when it
is not associated with an expression or statement - for example compile
unit data for debugging. I feel the old name was a bit misleading.
- Make the renamed MetaAnnot a proper data type instead of a type alias
for a pair.
- Rename "MetaExpr" constructor to "MetaStruct". As the data is much more
like a LLVM structure (not array, as it can contain values).
- Fix a warning
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backend.
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