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Re: [GHC] #7898: SpecConstr explodes when compiling module BSP of frag-1.1.2
by GHC 07 Oct '14

07 Oct '14

#7898: SpecConstr explodes when compiling module BSP of frag-1.1.2 -------------------------------------+------------------------------------- Reporter: tinctorius | Owner: Type: bug | Status: closed Priority: normal | Milestone: 7.8.4 Component: Compiler | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: Compile- | Blocked By: time crash | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by tibbe): * milestone: => 7.8.4 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7898#comment:18> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8852: 7.8.1 uses a lot of memory when compiling attoparsec programs using <|>
by GHC 07 Oct '14

07 Oct '14

#8852: 7.8.1 uses a lot of memory when compiling attoparsec programs using <|> -------------------------+------------------------------------------------- Reporter: | Owner: joelteon | Status: new Type: bug | Milestone: Priority: | Version: 7.8.1-rc2 normal | Operating System: Unknown/Multiple Component: | Type of failure: Compile-time performance bug Compiler | Test Case: Keywords: | Blocking: Architecture: | Unknown/Multiple | Difficulty: | Unknown | Blocked By: | Related Tickets: | -------------------------+------------------------------------------------- To reproduce, install a pre-`0.11.2.1` version of attoparsec. This bug was worked around in 0.11.2.1 by removing the `INLINE` on `plus` in attoparsec. With this test program: {{{#!haskell {-# LANGUAGE OverloadedStrings #-} import Control.Applicative import Data.Attoparsec.Text import Data.Text (Text) parser :: Parser Text parser = string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" main :: IO () main = parseTest parser "a" }}} and using GHC 7.8.1.rc2: Compiling using `-O2`, GHC tops out at ~1GB of RAM and takes 25s. Using `-O0`, GHC takes 0.47s and uses <150MB of RAM. Compare this with GHC 7.6.3: Compiling using `-O2`, GHC uses <150MB and takes 3.7s. Memory usage is similar with `-O0` although compile time goes down to 0.36s. An extreme version of this bug can be found in the `thyme` package here: https://github.com/liyang/thyme/blob/master/src/Data/Thyme/Format.hs#L589-L…. Compiling that module with an unfixed attoparsec makes GHC use all available memory and stall out, forcing kill -9. Replacing the function body with `undefined` makes the package compile as expected. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8852> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #5942, #8621, #8859, #9393, #3980, #5063, #1487, #8293
by GHC 07 Oct '14

07 Oct '14

Batch modification to #5942, #8621, #8859, #9393, #3980, #5063, #1487, #8293 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=5942%2C8621%2C8859%2C9393%2C3980%2…> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #427, #2280, #3575, #3620, #5278
by GHC 07 Oct '14

07 Oct '14

Batch modification to #427, #2280, #3575, #3620, #5278 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=427%2C2280%2C3575%2C3620%2C5278> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #3998, #5761, #7997, #8419, #8844, #8943, #9135, #9292, #9322, #3649, #5376, #2123
by GHC 07 Oct '14

07 Oct '14

Batch modification to #3998, #5761, #7997, #8419, #8844, #8943, #9135, #9292, #9322, #3649, #5376, #2123 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=3998%2C5761%2C7997%2C8419%2C8844%2…> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #1062, #7666
by GHC 07 Oct '14

07 Oct '14

Batch modification to #1062, #7666 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=1062%2C7666> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #8695, #9079
by GHC 07 Oct '14

07 Oct '14

Batch modification to #8695, #9079 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=8695%2C9079> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #5966, #7473, #7604, #8342, #8482, #9044, #9266, #4215, #5014, #5251
by GHC 07 Oct '14

07 Oct '14

Batch modification to #5966, #7473, #7604, #8342, #8482, #9044, #9266, #4215, #5014, #5251 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=5966%2C7473%2C7604%2C8342%2C8482%2…> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #4144, #9345, #806, #1473, #2189, #2408, #2496, #2528, #2628, #3231, #3628, #4102, #5364, #5466, #5797, #5859, #5982, #5983, #7045, #7161, #7353, #7373, #7634, #7985, #8010, #8345, #8517, #8684, #8767, #8793, #8850, #9043, #9114, #9132, #9236, #9240, #9306, #9330, #9368, #9395, #9434, #9496, #9510, #9526, #9527, #9537, #9542, #9586, #9588, #9631, #9638, #9644, #2614, #3517, #3977, #4413, #4861, #8532, #9283, #9385, #2140, #3065
by GHC 07 Oct '14

07 Oct '14

Batch modification to #4144, #9345, #806, #1473, #2189, #2408, #2496, #2528, #2628, #3231, #3628, #4102, #5364, #5466, #5797, #5859, #5982, #5983, #7045, #7161, #7353, #7373, #7634, #7985, #8010, #8345, #8517, #8684, #8767, #8793, #8850, #9043, #9114, #9132, #9236, #9240, #9306, #9330, #9368, #9395, #9434, #9496, #9510, #9526, #9527, #9537, #9542, #9586, #9588, #9631, #9638, #9644, #2614, #3517, #3977, #4413, #4861, #8532, #9283, #9385, #2140, #3065 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=4144%2C9345%2C806%2C1473%2C2189%2C…> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #229, #3676, #5666, #5672, #5827, #6101, #7011, #7104, #7309, #7860, #8354, #8362, #8647, #8664, #8666, #8752, #8772, #9169, #9220, #9281, #9539, #9594, #4442, #3606, #4022
by GHC 07 Oct '14

07 Oct '14

Batch modification to #229, #3676, #5666, #5672, #5827, #6101, #7011, #7104, #7309, #7860, #8354, #8362, #8647, #8664, #8666, #8752, #8772, #9169, #9220, #9281, #9539, #9594, #4442, #3606, #4022 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=229%2C3676%2C5666%2C5672%2C5827%2C…> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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