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Difficulty: Difficult (2-5 days) (8 matches)

Ticket Summary Status Owner Priority Milestone Component
#989 Windows "native" port new normal _|_ Compiler
#599 The Front Panel new normal _|_ Runtime System
#595 Overhaul GHC's overlapping/non-exhaustive pattern checking new normal _|_ Compiler
#605 Optimisation: strict enumerations new normal _|_ Compiler
#634 Implement a more efficient TArray new -- normal _|_ Runtime System
#603 GC-spy connection new normal _|_ Runtime System
#701 Better CSE optimisation new michalt normal _|_ Compiler
#617 Alpha port new normal _|_ Compiler

Difficulty: Easy (less than 1 hour) (1 match)

Ticket Summary Status Owner Priority Milestone Component
#3712 Implement -dynamic-lib option new low 7.6.2 Compiler

Difficulty: Moderate (less than a day) (13 matches)

Ticket Summary Status Owner Priority Milestone Component
#2123 implement waitForProcess using signals new lowest 7.6.2 libraries/process
#602 Warning Suppression new lowest 7.6.2 Compiler
#597 Various error messages have inaccurate source locations new low _|_ Compiler
#609 Useful optimisation for set-cost-centre new simonmar normal 7.6.2 Profiling
#3713 Track -dynamic/-fPIC to avoid obscure linker errors new low 7.6.2 Compiler
#3355 Refactor Template Haskell syntax conversions new lowest 7.6.2 Compiler
#624 Program location for thread error messages new normal _|_ Compiler
#1600 Optimisation: CPR the results of IO new lowest 7.6.2 Compiler
#2437 More accurate package dependencies new -- lowest 7.6.2 Package system
#4001 Implement an atomic readMVar new ezyang low 7.6.2 Runtime System
#1009 GHC Performance Index new normal _|_ Build System
#618 Dependency caching in ghc --make new normal _|_ Compiler
#1371 Add -O3 new normal _|_ Compiler

Difficulty: Unknown (40 matches)

Ticket Summary Status Owner Priority Milestone Component
#5757 zero unexpected failures on all tier 1 platforms new highest 7.6.2 Test Suite
#3559 split ghci modules off into their own package new low 7.6.2 GHCi
#3511 port GHC to OpenBSD/sparc64 (unregisterised is fine) new normal _|_ Compiler
#5793 make nofib awesome new dterei normal _|_ NoFib benchmark suite
#7829 make better/more robust loopbreaker choices new normal 7.8.1 Compiler
#7782 flag to run the demand analysis a second time new nfrisby normal 7.8.1 Compiler
#2968 add test for C trigraphs new kchugalinskiy lowest 7.6.2 Compiler
#5158 Update .git-ignore in all the repos new pcapriotti low 7.6.2 Compiler
#1880 Unify flag descriptions to generate both docs and code new lowest 7.6.2 Compiler
#7371 Supporting old GHC versions in our libraries new igloo normal 7.8.1 Build System
#5143 Soft heap limit flag new simonmar normal 7.6.2 Runtime System
#3024 Rewrite hp2ps in Haskell new normal _|_ Profiling
#7017 Rethink need for tarballs under "friendly" environment new high 7.8.1 Build System
#4374 Remove in-tree gmp new igloo high 7.8.1 Build System
#6017 Reading ./.ghci files raises security issues new high 7.8.1 GHCi
#2233 Overhaul System.Process new simonmar normal _|_ libraries/process
#5794 Nofib nightly regressions with pretty graphs new dterei normal _|_ NoFib benchmark suite
#2451 New signal-handling API new simonmar highest 7.8.1 libraries/unix
#3462 New codegen: allocate large objects using allocateLocal() new low 7.6.2 Compiler
#1631 Make the External Package Table contain ModDetails not ModIface new lowest 7.6.2 Compiler
#1572 Make it easy to find documentation for GHC and installed packages new lowest 7.6.2 Compiler
#1405 Make ghc (stage1) be compilable by non-GHC new normal _|_ Compiler
#4243 Make a proper options parser for the RTS new high 7.8.1 Runtime System
#4211 LLVM: Stack alignment on OSX new dterei normal 7.6.2 Compiler (LLVM)
#7608 LLVM only handles a hard-coded list of triples. new dterei normal 7.8.1 Compiler (LLVM)
#855 Improvements to SpecConstr new normal _|_ Compiler
#1593 Improve runInteractiveProcess error message when working directory does not exist new simonmar low _|_ libraries/process
#932 Improve inlining new simonpj normal _|_ Compiler
#888 Implement the static argument transformation new normal 7.6.2 Compiler
#1349 Generalise the ! and UNPACK mechanism for data types, to unpack function arguments new normal 7.6.2 Compiler
#1377 GHCi debugger tasks new mnislaih lowest 7.6.2 GHCi
#3379 GHC should use the standard binary package new normal 7.6.2 Compiler
#7623 GHC Arm support new normal 7.8.1 Compiler
#5140 Fix LLVM backend for PowerPC new erikd low 7.6.2 Compiler (LLVM)
#3646 Enforce requirement that our repos contains a subset of upstream's patches new lowest 7.6.2 Compiler
#3658 Dynamically link GHCi (and use system linker) on platforms that support it new igloo high 7.8.1 GHCi
#5791 Defer other kinds of errors until runtime, not just type errors new normal 7.6.2 Compiler
#1016 Avoidance of unaligned loads is overly conservative new lowest 7.6.2 Compiler
#7790 Add dummy undefined symbols to indicate ways new ezyang normal 7.8.1 Compiler
#3384 Add HsSyn prettyprinter tests new normal _|_ Test Suite

Difficulty: None (8 matches)

Ticket Summary Status Owner Priority Milestone Component
#7917 update documentation of InstalledPackageInfo new normal -- Documentation
#4196 add more stolen syntax to the user guide new low 7.6.2 Documentation
#4941 SpecConstr generates functions that do not use their arguments new normal _|_ Compiler
#4438 Rename and register the "PArr" language extension when it is judged to be ready new benl normal _|_ Data Parallel Haskell
#4281 Make impredicativity work properly new simonpj low 7.6.2 Compiler
#5567 LLVM: Improve alias analysis / performance new dterei normal 7.6.2 Compiler (LLVM)
#3755 Improve join point inlining new low 7.6.2 Compiler
#3946 Better diagnostic when entering a GC'd CAF new low 7.6.2 Runtime System
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