[GHC] #8791: Use new primitive bitwise operations on Int in Data.Bits
#8791: Use new primitive bitwise operations on Int in Data.Bits ------------------------------------+------------------------------------- Reporter: cdk | Owner: Type: task | Status: new Priority: normal | Milestone: 7.8.1 Component: libraries/base | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: 7689 | ------------------------------------+------------------------------------- New primitive bitwise primops have been added (`andI#`, `orI#`, etc). They should be used in the `Int` instance of `Data.Bits` to avoid `I# (word2Int# (int2Word# ...))` conversions. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8791> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#8791: Use new primitive bitwise operations on Int in Data.Bits -------------------------------------+------------------------------------ Reporter: cdk | Owner: Type: task | Status: patch Priority: normal | Milestone: 7.8.1 Component: libraries/base | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: 7689 -------------------------------------+------------------------------------ Changes (by cdk): * status: new => patch -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8791#comment:1> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#8791: Use new primitive bitwise operations for Int# in Data.Bits -------------------------------------+------------------------------------ Reporter: cdk | Owner: cdk Type: task | Status: patch Priority: normal | Milestone: 7.8.1 Component: libraries/base | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: 7689 -------------------------------------+------------------------------------ Changes (by cdk): * owner: => cdk -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8791#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#8791: Use new primitive bitwise operations for Int# in Data.Bits -------------------------------------+------------------------------------ Reporter: cdk | Owner: cdk Type: task | Status: patch Priority: normal | Milestone: 7.8.1 Component: libraries/base | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: 7689 -------------------------------------+------------------------------------ Comment (by Herbert Valerio Riedel <hvr@…>): In [changeset:"0fc4fb5477d3ca22a8b6894db5b1112b9badfdc4/base"]: {{{ #!CommitTicketReference repository="base" revision="0fc4fb5477d3ca22a8b6894db5b1112b9badfdc4" Use new bitwise Int# primops in Data.Bits (re #8791) The new primops (see also #7689) allow to optimize `instance Bits Int` by allowing to operate directly on Int# instead of having to convert to Word# and back to Int# again. Authored-by: Chris Dueck <crdueck@uwaterloo.ca> Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org> }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8791#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#8791: Use new primitive bitwise operations for Int# in Data.Bits -------------------------------+------------------------------------------- Reporter: cdk | Owner: cdk Type: feature | Status: merge request | Milestone: 7.8.1 Priority: normal | Version: 7.6.3 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: | Difficulty: Easy (less than 1 hour) Operating System: | Blocked By: Unknown/Multiple | Related Tickets: #7689 Type of failure: | None/Unknown | Test Case: | Blocking: | -------------------------------+------------------------------------------- Changes (by hvr): * status: patch => merge * difficulty: Unknown => Easy (less than 1 hour) * type: task => feature request * related: 7689 => #7689 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8791#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#8791: Use new primitive bitwise operations for Int# in Data.Bits -------------------------------+------------------------------------------- Reporter: cdk | Owner: cdk Type: feature | Status: closed request | Milestone: 7.8.1 Priority: normal | Version: 7.6.3 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: fixed | Difficulty: Easy (less than 1 hour) Operating System: | Blocked By: Unknown/Multiple | Related Tickets: #7689 Type of failure: | None/Unknown | Test Case: | Blocking: | -------------------------------+------------------------------------------- Changes (by hvr): * status: merge => closed * resolution: => fixed Comment: Merged via [c17729feb11b7992089a8cac540dd999b76557bc/base] -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8791#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
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