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* Replace calls to `ptext . sLit` with `text`Jan Stolarek2016-01-181-9/+9
| | | | | | | | | | | | | | | | | | | | Summary: In the past the canonical way for constructing an SDoc string literal was the composition `ptext . sLit`. But for some time now we have function `text` that does the same. Plus it has some rules that optimize its runtime behaviour. This patch takes all uses of `ptext . sLit` in the compiler and replaces them with calls to `text`. The main benefits of this patch are clener (shorter) code and less dependencies between module, because many modules now do not need to import `FastString`. I don't expect any performance benefits - we mostly use SDocs to report errors and it seems there is little to be gained here. Test Plan: ./validate Reviewers: bgamari, austin, goldfire, hvr, alanz Subscribers: goldfire, thomie, mpickering Differential Revision: https://phabricator.haskell.org/D1784
* Implement function-sections for Haskell code, #8405Simon Brenner2015-11-121-10/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a flag -split-sections that does similar things to -split-objs, but using sections in single object files instead of relying on the Satanic Splitter and other abominations. This is very similar to the GCC flags -ffunction-sections and -fdata-sections. The --gc-sections linker flag, which allows unused sections to actually be removed, is added to all link commands (if the linker supports it) so that space savings from having base compiled with sections can be realized. Supported both in LLVM and the native code-gen, in theory for all architectures, but really tested on x86 only. In the GHC build, a new SplitSections variable enables -split-sections for relevant parts of the build. Test Plan: validate with both settings of SplitSections Reviewers: dterei, Phyx, austin, simonmar, thomie, bgamari Reviewed By: simonmar, thomie, bgamari Subscribers: hsyl20, erikd, kgardas, thomie Differential Revision: https://phabricator.haskell.org/D1242 GHC Trac Issues: #8405
* Revert "Place static closures in their own section."Edward Z. Yang2014-10-201-1/+0
| | | | | | | | | | This reverts commit b23ba2a7d612c6b466521399b33fe9aacf5c4f75. Conflicts: compiler/cmm/PprCmmDecl.hs compiler/nativeGen/PPC/Ppr.hs compiler/nativeGen/SPARC/Ppr.hs compiler/nativeGen/X86/Ppr.hs
* Indentation and non-semantic changes only.Edward Z. Yang2014-10-191-7/+7
| | | | | | | | | | | | | | | Summary: Get these lines fitting in 80 columns, and replace ptext (sLit ...) with text Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu> Test Plan: validate Reviewers: simonmar, austin Subscribers: thomie, carter, ezyang, simonmar Differential Revision: https://phabricator.haskell.org/D342
* Place static closures in their own section.Edward Z. Yang2014-10-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | Summary: The primary reason for doing this is assisting debuggability: if static closures are all in the same section, they are guaranteed to be adjacent to one another. This will help later when we add some code that takes section start/end and uses this to sanity-check the sections. Part of remove HEAP_ALLOCED patch set (#8199) Signed-off-by: Edward Z. Yang <ezyang@mit.edu> Test Plan: validate Reviewers: simonmar, austin Subscribers: simonmar, ezyang, carter, thomie Differential Revision: https://phabricator.haskell.org/D263 GHC Trac Issues: #8199
* Add LANGUAGE pragmas to compiler/ source filesHerbert Valerio Riedel2014-05-151-0/+2
| | | | | | | | | | | | | | | | | | 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.
* Attach global register liveness info to Cmm procedures.Geoffrey Mainland2012-10-301-2/+2
| | | | | | | All Cmm procedures now include the set of global registers that are live on procedure entry, i.e., the global registers used to pass arguments to the procedure. Only global registers that are use to pass arguments are included in this list.
* Remove a couple of unneccesary Platform argumentsIan Lynagh2012-09-201-6/+3
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* Make StgHalfWord a portable typeIan Lynagh2012-09-181-1/+1
| | | | | It's now a newtyped Integer. Perhaps a newtyped Word32 would make more sense, though.
* New codegen: do not split proc-points when using the NCGSimon Marlow2012-07-301-2/+0
| | | | | | | | | Proc-point splitting is only required by backends that do not support having proc-points within a code block (that is, everything except the native backend, i.e. LLVM and C). Not doing proc-point splitting saves some compilation time, and might produce slightly better code in some cases.
* Move -fno-warn-orphan flag into individual modulesIan Lynagh2012-07-151-0/+1
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* Fix whitespace in cmm/PprCmmDecl.hsIan Lynagh2012-06-201-9/+2
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* Remove some more redundant Platform argumentsIan Lynagh2012-06-201-8/+8
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* Remove some redundant Platform argumentsIan Lynagh2012-06-201-4/+4
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* Remove more redundant Platform argumentsIan Lynagh2012-06-131-9/+7
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* Remove PlatformOutputableIan Lynagh2012-06-131-30/+26
| | | | | We can now get the Platform from the DynFlags inside an SDoc, so we no longer need to pass the Platform in.
* Pass DynFlags down to printForC and printForAsmIan Lynagh2012-06-111-2/+4
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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.
* More CPP removal: pprDynamicLinkerAsmLabel in CLabelIan Lynagh2011-10-021-29/+35
| | | | And some knock-on changes
* Renaming onlySimon Peyton Jones2011-08-251-8/+8
| | | | | CmmTop -> CmmDecl CmmPgm -> CmmGroup
* Snapshot of codegen refactoring to share with simonpjSimon Marlow2011-08-251-62/+23
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* More work towards cross-compilationIan Lynagh2011-07-151-17/+22
| | | | | | | | | | | | There's now a variant of the Outputable class that knows what platform we're targetting: class PlatformOutputable a where pprPlatform :: Platform -> a -> SDoc pprPlatformPrec :: Platform -> Rational -> a -> SDoc and various instances have had to be converted to use that class, and we pass Platform around accordingly.
* Don't export the _info symbol for the data constructor worker bindingsMax Bolingbroke2011-07-071-2/+3
| | | | | | | This is safe because GHC never generates a fast call to a data constructor worker: if the call is seen statically it will be eta-expanded and the allocation of the data will be inlined. We still need to export the _closure in case the constructor is used in an unapplied fashion.
* Remove the unused CmmAlign and CmmDataLabel from CmmStaticMax Bolingbroke2011-07-051-3/+1
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* Refactoring: use a structured CmmStatics type rather than [CmmStatic]Max Bolingbroke2011-07-051-3/+9
| | | | | | | | | | | | | | | | | | I observed that the [CmmStatics] within CmmData uses the list in a very stylised way. The first item in the list is almost invariably a CmmDataLabel. Many parts of the compiler pattern match on this list and fail if this is not true. This patch makes the invariant explicit by introducing a structured type CmmStatics that holds the label and the list of remaining [CmmStatic]. There is one wrinkle: the x86 backend sometimes wants to output an alignment directive just before the label. However, this can be easily fixed up by parameterising the native codegen over the type of CmmStatics (though the GenCmmTop parameterisation) and using a pair (Alignment, CmmStatics) there instead. As a result, I think we will be able to remove CmmAlign and CmmDataLabel from the CmmStatic data type, thus nuking a lot of code and failing pattern matches. This change will come as part of my next patch.
* Merge in new code generator branch.Simon Marlow2011-01-241-0/+196
This changes the new code generator to make use of the Hoopl package for dataflow analysis. Hoopl is a new boot package, and is maintained in a separate upstream git repository (as usual, GHC has its own lagging darcs mirror in http://darcs.haskell.org/packages/hoopl). During this merge I squashed recent history into one patch. I tried to rebase, but the history had some internal conflicts of its own which made rebase extremely confusing, so I gave up. The history I squashed was: - Update new codegen to work with latest Hoopl - Add some notes on new code gen to cmm-notes - Enable Hoopl lag package. - Add SPJ note to cmm-notes - Improve GC calls on new code generator. Work in this branch was done by: - Milan Straka <fox@ucw.cz> - John Dias <dias@cs.tufts.edu> - David Terei <davidterei@gmail.com> Edward Z. Yang <ezyang@mit.edu> merged in further changes from GHC HEAD and fixed a few bugs.
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