1. 07 May, 2012 1 commit
  2. 25 Apr, 2012 1 commit
  3. 24 Apr, 2012 3 commits
  4. 18 Dec, 2011 1 commit
  5. 14 Dec, 2011 1 commit
  6. 23 Nov, 2011 1 commit
  7. 18 Nov, 2011 1 commit
  8. 17 Nov, 2011 1 commit
  9. 14 Nov, 2011 1 commit
  10. 09 Nov, 2011 1 commit
  11. 02 Nov, 2011 1 commit
    • Simon Marlow's avatar
      Overhaul of infrastructure for profiling, coverage (HPC) and breakpoints · 7bb0447d
      Simon Marlow authored
      User visible changes
      ====================
      
      Profilng
      --------
      
      Flags renamed (the old ones are still accepted for now):
      
        OLD            NEW
        ---------      ------------
        -auto-all      -fprof-auto
        -auto          -fprof-exported
        -caf-all       -fprof-cafs
      
      New flags:
      
        -fprof-auto              Annotates all bindings (not just top-level
                                 ones) with SCCs
      
        -fprof-top               Annotates just top-level bindings with SCCs
      
        -fprof-exported          Annotates just exported bindings with SCCs
      
        -fprof-no-count-entries  Do not maintain entry counts when profiling
                                 (can make profiled code go faster; useful with
                                 heap profiling where entry counts are not used)
      
      Cost-centre stacks have a new semantics, which should in most cases
      result in more useful and intuitive profiles.  If you find this not to
      be the case, please let me know.  This is the area where I have been
      experimenting most, and the current solution is probably not the
      final version, however it does address all the outstanding bugs and
      seems to be better than GHC 7.2.
      
      Stack traces
      ------------
      
      +RTS -xc now gives more information.  If the exception originates from
      a CAF (as is common, because GHC tends to lift exceptions out to the
      top-level), then the RTS walks up the stack and reports the stack in
      the enclosing update frame(s).
      
      Result: +RTS -xc is much more useful now - but you still have to
      compile for profiling to get it.  I've played around a little with
      adding 'head []' to GHC itself, and +RTS -xc does pinpoint the problem
      quite accurately.
      
      I plan to add more facilities for stack tracing (e.g. in GHCi) in the
      future.
      
      Coverage (HPC)
      --------------
      
       * derived instances are now coloured yellow if they weren't used
       * likewise record field names
       * entry counts are more accurate (hpc --fun-entry-count)
       * tab width is now correct (markup was previously off in source with
         tabs)
      
      Internal changes
      ================
      
      In Core, the Note constructor has been replaced by
      
              Tick (Tickish b) (Expr b)
      
      which is used to represent all the kinds of source annotation we
      support: profiling SCCs, HPC ticks, and GHCi breakpoints.
      
      Depending on the properties of the Tickish, different transformations
      apply to Tick.  See CoreUtils.mkTick for details.
      
      Tickets
      =======
      
      This commit closes the following tickets, test cases to follow:
      
        - Close #2552: not a bug, but the behaviour is now more intuitive
          (test is T2552)
      
        - Close #680 (test is T680)
      
        - Close #1531 (test is result001)
      
        - Close #949 (test is T949)
      
        - Close #2466: test case has bitrotted (doesn't compile against current
          version of vector-space package)
      7bb0447d
  12. 10 Sep, 2011 1 commit
  13. 18 Aug, 2011 1 commit
  14. 21 Jul, 2011 1 commit
    • Simon Peyton Jones's avatar
      Change loop breaker terminology · e815d4b1
      Simon Peyton Jones authored
      We used to have "loop breaker" and "non-rule loop breaker", but
      the unqualified version in particualr was pretty confusing.  So
      now we have "strong loop breaker" and "weak loop breaker";
      comments in BasicTypes and OccurAnal.
      e815d4b1
  15. 19 Jun, 2011 1 commit
  16. 19 Apr, 2011 1 commit
    • Simon Peyton Jones's avatar
      This BIG PATCH contains most of the work for the New Coercion Representation · fdf86568
      Simon Peyton Jones authored
      See the paper "Practical aspects of evidence based compilation in System FC"
      
      * Coercion becomes a data type, distinct from Type
      
      * Coercions become value-level things, rather than type-level things,
        (although the value is zero bits wide, like the State token)
        A consequence is that a coerion abstraction increases the arity by 1
        (just like a dictionary abstraction)
      
      * There is a new constructor in CoreExpr, namely Coercion, to inject
        coercions into terms
      fdf86568
  17. 30 Nov, 2010 1 commit
  18. 29 Nov, 2010 1 commit
  19. 15 Nov, 2010 1 commit
  20. 05 Mar, 2011 1 commit
    • chak@cse.unsw.edu.au.'s avatar
      Completed the implementation of VECTORISE SCALAR · 2db562c7
      chak@cse.unsw.edu.au. authored
      - The pragma {-# VECTORISE SCALAR foo #-} marks 'foo' as a
        scalar function for for vectorisation and generates a
        vectorised version by applying 'scalar_map' and friends.
      - The set of scalar functions is not yet emitted into
        interface files.  This will be added in a subsequent
        patch via 'VectInfo'.
      2db562c7
  21. 20 Feb, 2011 1 commit
    • chak@cse.unsw.edu.au.'s avatar
      Added a VECTORISE pragma · f2aaae97
      chak@cse.unsw.edu.au. authored
      - Added a pragma {-# VECTORISE var = exp #-} that prevents
        the vectoriser from vectorising the definition of 'var'.
        Instead it uses the binding '$v_var = exp' to vectorise
        'var'.  The vectoriser checks that the Core type of 'exp'
        matches the vectorised Core type of 'var'.  (It would be
        quite complicated to perform that check in the type checker
        as the vectorisation of a type needs the state of the VM
        monad.)
      - Added parts of a related VECTORISE SCALAR pragma
      - Documented -ddump-vect
      - Added -ddump-vt-trace
      - Some clean up
      f2aaae97
  22. 15 Feb, 2011 1 commit
  23. 14 Feb, 2011 2 commits
  24. 09 Feb, 2011 1 commit
  25. 02 Feb, 2011 2 commits
  26. 01 Feb, 2011 1 commit
  27. 15 Sep, 2010 1 commit
  28. 09 Sep, 2010 2 commits
  29. 08 Sep, 2010 4 commits
  30. 31 Aug, 2010 1 commit
  31. 30 Aug, 2010 2 commits