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[GHC] #10962: Improved arithmetic primops
by GHC 07 Dec '16

07 Dec '16

#10962: Improved arithmetic primops -------------------------------------+------------------------------------- Reporter: nkaretnikov | Owner: nkaretnikov Type: task | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.11 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: | https://ghc.haskell.org/trac/ghc/wiki/ImprovedArithmeticPrimops -------------------------------------+------------------------------------- See the todo list on the wiki page. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10962> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7289: Mingw FPU init not Windows compatible.
by GHC 07 Dec '16

07 Dec '16

#7289: Mingw FPU init not Windows compatible. -----------------------------------+-------------------------------- Reporter: Lennart | Owner: Type: bug | Status: upstream Priority: normal | Milestone: 8.2.1 Component: Runtime System | Version: 7.2.2 Resolution: | Keywords: Operating System: Windows | Architecture: x86 Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -----------------------------------+-------------------------------- Comment (by bgamari): Phyx, do you think we could make this happen? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7289#comment:9> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5835: Make better use of known dictionaries
by GHC 07 Dec '16

07 Dec '16

#5835: Make better use of known dictionaries -------------------------------------+------------------------------------- Reporter: rl | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.5 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * milestone: 8.2.1 => Comment: De-milestoning due to lack of progress. If you, the motivated reader, would like to see this happen please do pick it up! -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5835#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2496: Invalid Eq/Ord instances in Data.Version
by GHC 07 Dec '16

07 Dec '16

#2496: Invalid Eq/Ord instances in Data.Version -------------------------------------+------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Core Libraries | Version: 6.8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D395 Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * milestone: 8.2.1 => Comment: De-milestoning due to lack of progress. If you want this to happen please feel free to pick it up! -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2496#comment:30> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1880: Unify flag descriptions to generate both docs and code
by GHC 07 Dec '16

07 Dec '16

#1880: Unify flag descriptions to generate both docs and code -------------------------------------+------------------------------------- Reporter: simonmar | Owner: Type: task | Status: closed Priority: lowest | Milestone: Component: Compiler | Version: 6.8.1 Resolution: duplicate | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #11654 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: new => closed * resolution: => duplicate * related: => #11654 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1880#comment:27> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1880: Unify flag descriptions to generate both docs and code
by GHC 07 Dec '16

07 Dec '16

#1880: Unify flag descriptions to generate both docs and code -------------------------------------+------------------------------------- Reporter: simonmar | Owner: Type: task | Status: new Priority: lowest | Milestone: Component: Compiler | Version: 6.8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: closed => new * resolution: fixed => -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1880#comment:26> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1880: Unify flag descriptions to generate both docs and code
by GHC 07 Dec '16

07 Dec '16

#1880: Unify flag descriptions to generate both docs and code -------------------------------------+------------------------------------- Reporter: simonmar | Owner: Type: task | Status: closed Priority: lowest | Milestone: Component: Compiler | Version: 6.8.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: new => closed * resolution: => fixed Comment: Things have changed a great deal since this bug was opened 9 years ago. This still isn't fixed per se (see #11654) but this particular instance of this issue can be closed. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1880#comment:25> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8224: Excessive system time -- new IO manager problem?
by GHC 07 Dec '16

07 Dec '16

#8224: Excessive system time -- new IO manager problem? -------------------------------------+------------------------------------- Reporter: rrnewton | Owner: Type: bug | Status: new Priority: high | Milestone: 7.8.1 Component: Runtime System | Version: 7.7 Keywords: IO Manager, | Operating System: Linux System Time | Type of failure: Runtime Architecture: x86_64 (amd64) | performance bug Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- This is an issue that came to light when testing the patches on #910. You can see some of the numbers there. Basically, recent GHC HEAD builds, running a large number of threads blocked on MVars will result in burning a lot of system time. The attached file provides a mediocre reproducer. With it, you can see that building with HEAD as of Aug 31st and running with `-RTS -N32` will result in around 200ms system time, whereas GHC 7.6.3 spends about 30ms in system time. This shows the disparity, but the result is not that egregious. A more noticeable example is on ticket #910, where when running on 31 threads, there is an 8 minutes of system time for 17 minutes of user time, and yet at one thread that system time drops to under two seconds! {{{ 1 thread: real 1m20.028s user 1m17.921s sys 0m1.768s 31 threads: real 1m27.445s user 17m0.314s sys 8m0.175s }}} It needs to be determined whether this system time is a result of the parallel compilation patches on #910, or whether it is a new problem with the runtime system, and in particular with the parallel IO manager. I am inclined to believe that compiling in parallel involves extra IO (repeatedly reading interface files?), but not eight minutes of it!! -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8224> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #229: Integer overflow in array allocation
by GHC 07 Dec '16

07 Dec '16

#229: Integer overflow in array allocation -------------------------------------+------------------------------------- Reporter: josefs | Owner: bgamari Type: bug | Status: patch Priority: high | Milestone: 8.2.1 Component: Core Libraries | Version: 7.9 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * owner: rwbarton => bgamari -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/229#comment:28> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #229: Integer overflow in array allocation
by GHC 07 Dec '16

07 Dec '16

#229: Integer overflow in array allocation -------------------------------------+------------------------------------- Reporter: josefs | Owner: rwbarton Type: bug | Status: patch Priority: high | Milestone: 8.2.1 Component: Core Libraries | Version: 7.9 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: new => patch Comment: Here's a patch. https://github.com/bgamari/array/commit/73144bda5cf4f5ba2e73206ea0a53200e30… -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/229#comment:27> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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