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path: root/compiler/codeGen/CgTailCall.lhs
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* Remove the old codegenSimon Marlow2012-10-191-509/+0
| | | | | Except for CgUtils.fixStgRegisters that is used in the NCG and LLVM backends, and should probably be moved somewhere else.
* Some alpha renamingIan Lynagh2012-10-161-1/+1
| | | | | Mostly d -> g (matching DynFlag -> GeneralFlag). Also renamed if* to when*, matching the Haskell if/when names
* Move more constants into platformConstantsIan Lynagh2012-09-141-3/+4
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* Pass DynFlags down to wordWidthIan Lynagh2012-09-121-3/+3
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* Pass DynFlags down to bWordIan Lynagh2012-09-121-1/+1
| | | | | | I've switched to passing DynFlags rather than Platform, as (a) it's simpler to not have to extract targetPlatform in so many places, and (b) it may be useful to have DynFlags around in future.
* Add "Unregisterised" as a field in the settings fileIan Lynagh2012-08-071-2/+3
| | | | | | To explicitly choose whether you want an unregisterised build you now need to use the "--enable-unregisterised"/"--disable-unregisterised" configure flags.
* Make tablesNextToCode "dynamic"Ian Lynagh2012-08-061-4/+5
| | | | | This is a bit odd by itself, but it's a stepping stone on the way to putting "target unregisterised" into the settings file.
* Make -fscc-profiling a dynamic flagIan Lynagh2012-07-241-7/+8
| | | | All the flags that 'ways' imply are now dynamic
* Change how macros like ASSERT are definedIan Lynagh2012-06-051-0/+1
| | | | | By using Haskell's debugIsOn rather than CPP's "#ifdef DEBUG", we don't need to kludge things to keep the warning checker happy etc.
* Track STG live register information for use in LLVMDavid Terei2012-01-091-38/+50
| | | | | | | | | We now carry around with CmmJump statements a list of the STG registers that are live at that jump site. This is used by the LLVM backend so it can avoid unnesecarily passing around dead registers, improving perfromance. This gives us the framework to finally fix trac #4308.
* Remove unused argument field on CmmJumpDavid Terei2012-01-051-5/+5
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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 refactoring (CgRep)Simon Peyton Jones2011-08-251-1/+0
| | | | | | * Move CgRep (private to old codgen) from SMRep to ClosureInfo * Avoid using CgRep in new codegen * Move SMRep and Bitmap from codeGen/ to cmm/
* Merge in new code generator branch.Simon Marlow2011-01-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Add PrimCall to the STG layer and update Core -> STG translationDuncan Coutts2009-06-091-2/+11
| | | | | | | | | | It adds a third case to StgOp which already hold StgPrimOp and StgFCallOp. The code generation for the new StgPrimCallOp case is almost exactly the same as for out-of-line primops. They now share the tailCallPrim function. In the Core -> STG translation we map foreign calls using the "prim" calling convention to the StgPrimCallOp case. This is because in Core we represent prim calls using the ForeignCall stuff. At the STG level however the prim calls are really much more like primops than foreign calls.
* Removed a tracedias@eecs.tufts.edu2009-03-181-1/+1
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* Calling convention bug and cleanupdias@eecs.tufts.edu2009-03-171-1/+1
| | | | | - yet another wrong calling convention; this one was a special case for returning one value.
* FIX biographical profiling (#3039, probably #2297)Simon Marlow2009-03-171-1/+5
| | | | | | | | | Since we introduced pointer tagging, we no longer always enter a closure to evaluate it. However, the biographical profiler relies on closures being entered in order to mark them as "used", so we were getting spurious amounts of data attributed to VOID. It turns out there are various places that need to be fixed, and I think at least one of them was also wrong before pointer tagging (CgCon.cgReturnDataCon).
* Use DynFlags to work out if we are doing ticky ticky profilingIan Lynagh2008-12-181-1/+2
| | | | We used to use StaticFlags
* Fix warnings in CgTailCallIan Lynagh2008-12-171-13/+7
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* Remove a little dead code from CgTailCallIan Lynagh2008-12-171-1/+0
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* Merging in the new codegen branchdias@eecs.harvard.edu2008-08-141-2/+5
| | | | | | | | | | | | | | | | | | This merge does not turn on the new codegen (which only compiles a select few programs at this point), but it does introduce some changes to the old code generator. The high bits: 1. The Rep Swamp patch is finally here. The highlight is that the representation of types at the machine level has changed. Consequently, this patch contains updates across several back ends. 2. The new Stg -> Cmm path is here, although it appears to have a fair number of bugs lurking. 3. Many improvements along the CmmCPSZ path, including: o stack layout o some code for infotables, half of which is right and half wrong o proc-point splitting
* Don't import FastString in HsVersions.hIan Lynagh2008-03-291-5/+0
| | | | Modules that need it import it themselves instead.
* massive changes to add a 'zipper' representation of C--Norman Ramsey2007-09-061-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changes too numerous to comment on, but here is some old history that I saved: Wed Aug 15 11:07:13 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * type synonyms made consistent with new Cmm types M ./compiler/nativeGen/MachInstrs.hs -2 +2 Mon Aug 20 19:22:14 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * pushing return info beyond cmm into codegen M ./compiler/codeGen/Bitmap.hs r3 M ./compiler/codeGen/CgBindery.lhs r3 M ./compiler/codeGen/CgCallConv.hs r3 M ./compiler/codeGen/CgCase.lhs r3 M ./compiler/codeGen/CgClosure.lhs r3 M ./compiler/codeGen/CgCon.lhs r3 M ./compiler/codeGen/CgExpr.lhs r3 M ./compiler/codeGen/CgForeignCall.hs -6 +7 r3 M ./compiler/codeGen/CgHeapery.lhs r3 M ./compiler/codeGen/CgHpc.hs +1 r3 M ./compiler/codeGen/CgInfoTbls.hs r3 M ./compiler/codeGen/CgLetNoEscape.lhs r3 M ./compiler/codeGen/CgMonad.lhs r3 M ./compiler/codeGen/CgParallel.hs r3 M ./compiler/codeGen/CgPrimOp.hs +3 r3 M ./compiler/codeGen/CgProf.hs r3 M ./compiler/codeGen/CgStackery.lhs r3 M ./compiler/codeGen/CgTailCall.lhs r3 M ./compiler/codeGen/CgTicky.hs r3 M ./compiler/codeGen/CgUtils.hs -1 +1 r3 M ./compiler/codeGen/ClosureInfo.lhs r3 M ./compiler/codeGen/CodeGen.lhs r3 M ./compiler/codeGen/SMRep.lhs r3 M ./compiler/nativeGen/AsmCodeGen.lhs -2 +2 r1 M ./compiler/nativeGen/MachCodeGen.hs -3 +3 r1 M ./compiler/nativeGen/MachInstrs.hs r1 M ./compiler/nativeGen/MachRegs.lhs r1 M ./compiler/nativeGen/NCGMonad.hs r1 M ./compiler/nativeGen/PositionIndependentCode.hs r1 M ./compiler/nativeGen/PprMach.hs r1 M ./compiler/nativeGen/RegAllocInfo.hs r1 M ./compiler/nativeGen/RegisterAlloc.hs r1 Mon Aug 20 20:54:41 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * put CmmReturnInfo into a CmmCall (and related types) M ./compiler/cmm/Cmm.hs -2 +1 r3 M ./compiler/cmm/CmmBrokenBlock.hs -13 +12 r1 M ./compiler/cmm/CmmCPS.hs -3 +3 M ./compiler/cmm/CmmCPSGen.hs -8 +6 r1 M ./compiler/cmm/CmmLint.hs -1 +1 M ./compiler/cmm/CmmLive.hs -1 +1 M ./compiler/cmm/CmmOpt.hs -3 +3 M ./compiler/cmm/CmmParse.y -6 +6 r3 M ./compiler/cmm/PprC.hs -3 +3 M ./compiler/cmm/PprCmm.hs -7 +4 r2 M ./compiler/codeGen/CgForeignCall.hs -7 +6 r2 M ./compiler/codeGen/CgHpc.hs -1 r1 M ./compiler/codeGen/CgPrimOp.hs -3 r1 M ./compiler/codeGen/CgUtils.hs -1 +1 r1 M ./compiler/nativeGen/AsmCodeGen.lhs -2 +2 M ./compiler/nativeGen/MachCodeGen.hs -3 +3 r1 Tue Aug 21 18:09:13 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * add call info in nativeGen M ./compiler/nativeGen/AsmCodeGen.lhs r1 M ./compiler/nativeGen/MachInstrs.hs r1 M ./compiler/nativeGen/MachRegs.lhs r1 M ./compiler/nativeGen/NCGMonad.hs r1 M ./compiler/nativeGen/PositionIndependentCode.hs r1 M ./compiler/nativeGen/PprMach.hs r1 M ./compiler/nativeGen/RegAllocInfo.hs r1 Wed Aug 22 16:41:58 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * ListGraph is now a newtype, not a synonym The resultant bookkeepping is unenviable, but the change greatly simplifies our ability to make Cmm things propertly Outputable for both list-graph and zipper-graph representations. M ./compiler/cmm/Cmm.hs -5 +3 M ./compiler/cmm/CmmCPS.hs -2 +2 M ./compiler/cmm/CmmCPSGen.hs -1 +1 M ./compiler/cmm/CmmContFlowOpt.hs -3 +3 M ./compiler/cmm/CmmCvt.hs -2 +2 M ./compiler/cmm/CmmInfo.hs -2 +3 M ./compiler/cmm/CmmLint.hs -1 +1 M ./compiler/cmm/CmmOpt.hs -2 +2 M ./compiler/cmm/PprC.hs -1 +1 M ./compiler/cmm/PprCmm.hs -5 +8 M ./compiler/cmm/PprCmmZ.hs -7 +1 M ./compiler/codeGen/CgMonad.lhs -1 +1 M ./compiler/nativeGen/AsmCodeGen.lhs -15 +15 M ./compiler/nativeGen/MachCodeGen.hs -2 +2 M ./compiler/nativeGen/PositionIndependentCode.hs -6 +6 M ./compiler/nativeGen/PprMach.hs -3 +2 M ./compiler/nativeGen/RegAllocColor.hs +1 M ./compiler/nativeGen/RegAllocLinear.hs -4 +5 M ./compiler/nativeGen/RegCoalesce.hs -6 +6 M ./compiler/nativeGen/RegLiveness.hs -12 +12 Thu Aug 23 13:44:49 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * diagnostic assistance in case fromJust fails M ./compiler/nativeGen/MachCodeGen.hs -2 +5 Thu Aug 23 14:07:28 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * give every block, even the first, a label With branch-chain elimination, the first block of a procedure might be the target of a branch. This actually happens to a dozen or more procedures in the run-time system. M ./compiler/nativeGen/PprMach.hs -8 +3 Fri Aug 24 17:27:04 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * clean up the code in PprMach M ./compiler/nativeGen/PprMach.hs -16 +14 Fri Aug 24 19:35:03 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * a bunch of impedance matching to get the compiler to build, plus * the plus is diagnostics for unreachable code, which required moving a lot of prettyprinting code M ./compiler/cmm/Cmm.hs -7 +5 M ./compiler/cmm/CmmCPSZ.hs -1 +1 M ./compiler/cmm/CmmCvt.hs -8 +8 M ./compiler/cmm/CmmParse.y -4 +3 M ./compiler/cmm/MkZipCfg.hs -19 +9 M ./compiler/cmm/PprCmmZ.hs -118 +4 M ./compiler/cmm/ZipCfg.hs -1 +13 M ./compiler/cmm/ZipCfgCmm.hs -10 +129 M ./compiler/main/HscMain.lhs -4 +4 M ./compiler/nativeGen/NCGMonad.hs -2 +2 M ./compiler/nativeGen/RegAllocInfo.hs -3 +3 Fri Aug 31 14:38:02 BST 2007 Norman Ramsey <nr@eecs.harvard.edu> * fix a warning about an import M ./compiler/nativeGen/RegAllocColor.hs -1 +1
* Fix CodingStyle#Warnings URLsIan Lynagh2007-09-041-1/+1
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* Use OPTIONS rather than OPTIONS_GHC for pragmasIan Lynagh2007-09-031-2/+2
| | | | | | | Older GHCs can't parse OPTIONS_GHC. This also changes the URL referenced for the -w options from WorkingConventions#Warnings to CodingStyle#Warnings for the compiler modules.
* Add {-# OPTIONS_GHC -w #-} and some blurb to all compiler modulesIan Lynagh2007-09-011-0/+7
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* Add a missing "entryCode"Ian Lynagh2007-08-251-1/+1
| | | | | This was causing us to try to jump to the address of an infotable when unregisterised, leading to a segfault.
* Change the strategy to determine dynamic data accessClemens Fruhwirth2007-07-311-1/+1
| | | | | | | | | | | | | Instead of attaching the information whether a Label is going to be accessed dynamically or not (distinction between IdLabel/DynLabel and additional flags in ModuleInitLabel and PlainModuleInitLabel), we hand dflags through the CmmOpt monad and the NatM monad. Before calling labelDynamic in PositionIndependentCode, we extract thisPackage from dflags and supply the current package to labelDynamic, so it can take this information into account instead of extracting it from the labels itself. This simplifies a lot of code in codeGen that just hands through this_pkg.
* Pointer TaggingSimon Marlow2007-07-271-5/+65
| | | | | | | | | | | | | | | | | | | | | | This patch implements pointer tagging as per our ICFP'07 paper "Faster laziness using dynamic pointer tagging". It improves performance by 10-15% for most workloads, including GHC itself. The original patches were by Alexey Rodriguez Yakushev <mrchebas@gmail.com>, with additions and improvements by me. I've re-recorded the development as a single patch. The basic idea is this: we use the low 2 bits of a pointer to a heap object (3 bits on a 64-bit architecture) to encode some information about the object pointed to. For a constructor, we encode the "tag" of the constructor (e.g. True vs. False), for a function closure its arity. This enables some decisions to be made without dereferencing the pointer, which speeds up some common operations. In particular it enables us to avoid costly indirect jumps in many cases. More information in the commentary: http://hackage.haskell.org/trac/ghc/wiki/Commentary/Rts/HaskellExecution/PointerTagging
* Remove vectored returns.Simon Marlow2007-02-281-44/+8
| | | | | We recently discovered that they aren't a win any more, and just cost code size.
* Semi-tagging optimisationSimon Marlow2007-01-221-1/+1
| | | | | | In the generated code for case-of-variable, test the tag of the scrutinee closure and only enter if it is unevaluated. Also turn *off* vectored returns.
* Semi-tagging optimisationSimon Marlow2007-01-221-1/+1
| | | | | | In the generated code for case-of-variable, test the tag of the scrutinee closure and only enter if it is unevaluated. Also turn *off* vectored returns.
* Module header tidyup, phase 1Simon Marlow2006-10-111-25/+16
| | | | | | | | | | | | This patch is a start on removing import lists and generally tidying up the top of each module. In addition to removing import lists: - Change DATA.IOREF -> Data.IORef etc. - Change List -> Data.List etc. - Remove $Id$ - Update copyrights - Re-order imports to put non-GHC imports last - Remove some unused and duplicate imports
* Generalise Package SupportSimon Marlow2006-07-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch pushes through one fundamental change: a module is now identified by the pair of its package and module name, whereas previously it was identified by its module name alone. This means that now a program can contain multiple modules with the same name, as long as they belong to different packages. This is a language change - the Haskell report says nothing about packages, but it is now necessary to understand packages in order to understand GHC's module system. For example, a type T from module M in package P is different from a type T from module M in package Q. Previously this wasn't an issue because there could only be a single module M in the program. The "module restriction" on combining packages has therefore been lifted, and a program can contain multiple versions of the same package. Note that none of the proposed syntax changes have yet been implemented, but the architecture is geared towards supporting import declarations qualified by package name, and that is probably the next step. It is now necessary to specify the package name when compiling a package, using the -package-name flag (which has been un-deprecated). Fortunately Cabal still uses -package-name. Certain packages are "wired in". Currently the wired-in packages are: base, haskell98, template-haskell and rts, and are always referred to by these versionless names. Other packages are referred to with full package IDs (eg. "network-1.0"). This is because the compiler needs to refer to entities in the wired-in packages, and we didn't want to bake the version of these packages into the comiler. It's conceivable that someone might want to upgrade the base package independently of GHC. Internal changes: - There are two module-related types: ModuleName just a FastString, the name of a module Module a pair of a PackageId and ModuleName A mapping from ModuleName can be a UniqFM, but a mapping from Module must be a FiniteMap (we provide it as ModuleEnv). - The "HomeModules" type that was passed around the compiler is now gone, replaced in most cases by the current package name which is contained in DynFlags. We can tell whether a Module comes from the current package by comparing its package name against the current package. - While I was here, I changed PrintUnqual to be a little more useful: it now returns the ModuleName that the identifier should be qualified with according to the current scope, rather than its original module. Also, PrintUnqual tells whether to qualify module names with package names (currently unused). Docs to follow.
* Reorganisation of the source treeSimon Marlow2006-04-071-0/+455
Most of the other users of the fptools build system have migrated to Cabal, and with the move to darcs we can now flatten the source tree without losing history, so here goes. The main change is that the ghc/ subdir is gone, and most of what it contained is now at the top level. The build system now makes no pretense at being multi-project, it is just the GHC build system. No doubt this will break many things, and there will be a period of instability while we fix the dependencies. A straightforward build should work, but I haven't yet fixed binary/source distributions. Changes to the Building Guide will follow, too.
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