Make sum and product INLINABLE
authorSimon Peyton Jones <simonpj@microsoft.com>
Mon, 24 Dec 2012 14:44:31 +0000 (14:44 +0000)
committerSimon Peyton Jones <simonpj@microsoft.com>
Mon, 24 Dec 2012 14:44:31 +0000 (14:44 +0000)
commit06e36c63fce9aef5d3d8d9efeab14263333d48bf
tree1a7cbcbb3343a2c37cc2448bc21fd90bd5c95eac
parentf07215b83132b9bc9b0078a0e0940934319f3360
Make sum and product INLINABLE

This was causing the bad behaviour in Trac #7507,
because 'sum' wasn't getting specialised to Int64.

It also deals with Trac #4321, which had the same cause.

This has a big effect on some nofib programs too:

--------------------------------------------------------------------------------
        Program           Allocs   Runtime   Elapsed  TotalMem
------------------------------------------------------------------------
     bernouilli            -2.6%     -2.0%     -2.0%     +0.0%
           fft2           -23.8%      0.09      0.09    -16.7%
          fluid            -4.4%      0.01      0.01     +0.0%
         hidden            -3.2%     +2.1%     +1.8%     +0.0%
      integrate           -38.0%    -47.7%    -47.7%     -1.0%
           x2n1           -30.2%      0.01      0.01    -50.0%
------------------------------------------------------------------------
            Min           -38.0%    -47.7%    -47.7%    -50.0%
            Max            +0.4%    +11.2%    +11.8%     +6.9%
 Geometric Mean            -1.3%     +0.2%     +0.2%     -0.8%
Data/List.hs