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* compiler: introduce custom "GhcPrelude" PreludeHerbert Valerio Riedel2017-09-191-0/+2
| | | | | | | | | | | | | | | | | | 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
* Upgrade UniqSet to a newtypeDavid Feuer2017-03-011-3/+3
| | | | | | | | | | | | | | | | | | | | | The fundamental problem with `type UniqSet = UniqFM` is that `UniqSet` has a key invariant `UniqFM` does not. For example, `fmap` over `UniqSet` will generally produce nonsense. * Upgrade `UniqSet` from a type synonym to a newtype. * Remove unused and shady `extendVarSet_C` and `addOneToUniqSet_C`. * Use cached unique in `tyConsOfType` by replacing `unitNameEnv (tyConName tc) tc` with `unitUniqSet tc`. Reviewers: austin, hvr, goldfire, simonmar, niteria, bgamari Reviewed By: niteria Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D3146
* Document some codegen nondeterminismBartosz Nitka2016-07-071-2/+3
| | | | | | | | | Bit-for-bit reproducible binaries are not a goal for now, so this is just marking places that could be a problem. Doing this will allow eltsUFM to be removed and will leave only nonDetEltsUFM. GHC Trac: #4012
* Remove uniqSetToListBartosz Nitka2016-07-011-3/+6
| | | | | | | This documents nondeterminism in code generation and removes the nondeterministic ufmToList function. In the future someone will have to use nonDetEltsUFM (with proper explanation) or pprUFM.
* Remove redundant constraints in the compiler itself, found by ↵Simon Peyton Jones2015-01-061-5/+4
| | | | -fwarn-redundant-constraints
* utils: detabify/dewhitespace GraphPprAustin Seipp2014-08-201-136/+128
| | | | Signed-off-by: Austin Seipp <austin@well-typed.com>
* Add LANGUAGE pragmas to compiler/ source filesHerbert Valerio Riedel2014-05-151-1/+1
| | | | | | | | | | | | | | | | | | In some cases, the layout of the LANGUAGE/OPTIONS_GHC lines has been reorganized, while following the convention, to - place `{-# LANGUAGE #-}` pragmas at the top of the source file, before any `{-# OPTIONS_GHC #-}`-lines. - Moreover, if the list of language extensions fit into a single `{-# LANGUAGE ... -#}`-line (shorter than 80 characters), keep it on one line. Otherwise split into `{-# LANGUAGE ... -#}`-lines for each individual language extension. In both cases, try to keep the enumeration alphabetically ordered. (The latter layout is preferable as it's more diff-friendly) While at it, this also replaces obsolete `{-# OPTIONS ... #-}` pragma occurences by `{-# OPTIONS_GHC ... #-}` pragmas.
* Globally replace "hackage.haskell.org" with "ghc.haskell.org"Simon Marlow2013-10-011-1/+1
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* Use -fwarn-tabs when validatingIan Lynagh2011-11-041-0/+7
| | | | | We only use it for "compiler" sources, i.e. not for libraries. Many modules have a -fno-warn-tabs kludge for now.
* Fix Haddock errors.Thomas Schilling2008-07-201-3/+3
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* Make some more modules use LazyUniqFM instead of UniqFMIan Lynagh2008-02-071-1/+1
| | | | | If these modules use UniqFM then we get a stack overflow when compiling modules that use fundeps. I haven't tracked down the actual cause.
* Make some more modules use LazyUniqFM instead of UniqFMIan Lynagh2008-02-071-1/+1
| | | | | If these modules use UniqFM then we get a stack overflow when compiling modules that use fundeps. I haven't tracked down the actual cause.
* move generic graph-colouring code into utilSimon Marlow2007-09-121-0/+169
It is needed by cmm/StackColor, and hence is needed even when there is no native code generator.
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