1. 14 Dec, 2012 1 commit
  2. 19 Sep, 2012 1 commit
  3. 17 Sep, 2012 1 commit
  4. 14 Jul, 2012 1 commit
    • Ian Lynagh's avatar
      Implement FastBytes, and use it for MachStr · 7ae1bec5
      Ian Lynagh authored
      This is a first step on the way to refactoring the FastString type.
      
      FastBytes currently has no unique, mainly because there isn't currently
      a nice way to produce them in Binary.
      
      Also, we don't currently do the "Dictionary" thing with FastBytes in
      Binary. I'm not sure whether this is important.
      
      We can change both decisions later, but in the meantime this gets the
      refactoring underway.
      7ae1bec5
  5. 18 Jun, 2012 1 commit
  6. 12 Jun, 2012 1 commit
  7. 06 Jun, 2012 1 commit
  8. 05 Jun, 2012 1 commit
  9. 09 Nov, 2011 2 commits
  10. 04 Nov, 2011 1 commit
  11. 24 Oct, 2011 1 commit
  12. 21 Oct, 2011 1 commit
    • Simon Peyton Jones's avatar
      Recover proper sharing for Integer literals · ca380cd1
      Simon Peyton Jones authored
      Trac #5549 showed a loss of performance for GHC 7.4.
      What was happening was that an integer literal was being
      allocated each time around a loop, rather than being
      floated to top level and shared.
      
      Two fixes
       * Make the float-out pass float literals that are non-trivial
       * Make the inliner *not* treat Integer literals as size-zero
      ca380cd1
  13. 27 Sep, 2011 1 commit
    • Ian Lynagh's avatar
      Reenable a couple of assertions · 4faae220
      Ian Lynagh authored
      The comment explaining why they were disabled seemed to be out-of-date.
      It claimed we need to be able to write (intToWord# 0xffff0000#) whereas
      we can just write 0xffff0000##.
      
      Validate goes through with
          GhcStage1HcOpts   += -O0 -DDEBUG
          GhcStage2HcOpts   += -O0 -DDEBUG
      4faae220
  14. 23 Sep, 2011 1 commit
  15. 17 Sep, 2011 1 commit
    • Ian Lynagh's avatar
      Improve the handling of Integer literals · 1e87c0a6
      Ian Lynagh authored
      LitInteger now carries around the id of mkInteger, which it uses
      to construct the core to build Integer literals. This way we don't
      have to build in info about lots of Ids.
      
      We also no longer have any special-casing for integer-simple, so
      there is less code involved.
      1e87c0a6
  16. 13 Sep, 2011 1 commit
    • Ian Lynagh's avatar
      change how Integer's are handled in Core · fdac48f3
      Ian Lynagh authored
      We now treat them as literals until CorePrep, when we finally
      convert them into the real Core representation. This makes it a lot
      simpler to implement built-in rules on them.
      fdac48f3
  17. 11 Sep, 2011 2 commits
  18. 25 Aug, 2011 1 commit
  19. 24 Sep, 2010 1 commit
  20. 23 Sep, 2010 1 commit
  21. 30 Mar, 2010 1 commit
  22. 14 Oct, 2009 1 commit
    • Simon Marlow's avatar
      Fixes for cross-compiling to a different word size · 79e9cfa3
      Simon Marlow authored
      This patch eliminates a couple of places where we were assuming that
      the host word size is the same as the target word size.
      
      Also a little refactoring: Constants now exports the types TargetInt
      and TargetWord corresponding to the Int/Word type on the target
      platform, and I moved the definitions of tARGET_INT_MAX and friends
      from Literal to Constants.
      
      Thanks to Barney Stratford <barney_stratford@fastmail.fm> for helping
      track down the problem and fix it.  We now know that GHC can
      successfully cross-compile from 32-bit to 64-bit.
      79e9cfa3
  23. 24 Jul, 2009 1 commit
  24. 03 Apr, 2009 1 commit
    • simonpj@microsoft.com's avatar
      Adjust inlining heursitics · b71760aa
      simonpj@microsoft.com authored
      This patch is the result of a long series of nofib-based experiments
      to improve GHC's inlining heuristics.
      
      In the end, I'm not sure how worthwhile it all was: I only got a 
         1% decrease in code size
         1% decrease in allocation
      and I don't trust the runtime statistics enough to quote.
      
      Still, in doing all this I tidied up the code quite a bit, and 
      I understand it much better now, so I'm going to commit it.
      
      The main changes are in CoreUnfold, which has lots of new comments.
      Other changes:
      
        - litSize moves from Literal to CoreUnfold
        - interestingArg moves from SimplUtils to CoreUnfold
        - the default unfolding threshold (in StaticFlags) 
            reduces from 8 to 6 (since the size calculation 
            has changed a bit)
      
      b71760aa
  25. 06 Feb, 2009 1 commit
    • Ian Lynagh's avatar
      When generating C, don't pretend functions are data · 497302c4
      Ian Lynagh authored
      We used to generated things like:
          extern StgWordArray (newCAF) __attribute__((aligned (8)));
          ((void (*)(void *))(W_)&newCAF)((void *)R1.w);
      (which is to say, pretend that newCAF is some data, then cast it to a
      function and call it).
      This goes wrong on at least IA64, where:
          A function pointer on the ia64 does not point to the first byte of
          code. Intsead, it points to a structure that describes the function.
          The first quadword in the structure is the address of the first byte
          of code
      so we end up dereferencing function pointers one time too many, and
      segfaulting.
      497302c4
  26. 31 Jul, 2008 1 commit
  27. 12 Apr, 2008 1 commit
  28. 26 Jan, 2008 1 commit
  29. 17 Jan, 2008 1 commit
    • Isaac Dupree's avatar
      lots of portability changes (#1405) · 206b4dec
      Isaac Dupree authored
      re-recording to avoid new conflicts was too hard, so I just put it
      all in one big patch :-(  (besides, some of the changes depended on
      each other.)  Here are what the component patches were:
      
      Fri Dec 28 11:02:55 EST 2007  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * document BreakArray better
      
      Fri Dec 28 11:39:22 EST 2007  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * properly ifdef BreakArray for GHCI
      
      Fri Jan  4 13:50:41 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * change ifs on __GLASGOW_HASKELL__ to account for... (#1405)
        for it not being defined. I assume it being undefined implies
        a compiler with relatively modern libraries but without most
        unportable glasgow extensions.
      
      Fri Jan  4 14:21:21 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * MyEither-->EitherString to allow Haskell98 instance
      
      Fri Jan  4 16:13:29 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * re-portabilize Pretty, and corresponding changes
      
      Fri Jan  4 17:19:55 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * Augment FastTypes to be much more complete
      
      Fri Jan  4 20:14:19 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * use FastFunctions, cleanup FastString slightly
      
      Fri Jan  4 21:00:22 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * Massive de-"#", mostly Int# --> FastInt (#1405)
      
      Fri Jan  4 21:02:49 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * miscellaneous unnecessary-extension-removal
      
      Sat Jan  5 19:30:13 EST 2008  Isaac Dupree <id@isaac.cedarswampstudios.org>
        * add FastFunctions
      206b4dec
  30. 04 Sep, 2007 1 commit
  31. 03 Sep, 2007 1 commit
  32. 01 Sep, 2007 1 commit
  33. 11 Jul, 2007 1 commit
  34. 02 May, 2007 1 commit
  35. 11 Oct, 2006 1 commit
    • Simon Marlow's avatar
      Module header tidyup, phase 1 · 49c98d14
      Simon Marlow authored
      This patch is a start on removing import lists and generally tidying
      up the top of each module.  In addition to removing import lists:
      
         - Change DATA.IOREF -> Data.IORef etc.
         - Change List -> Data.List etc.
         - Remove $Id$
         - Update copyrights
         - Re-order imports to put non-GHC imports last
         - Remove some unused and duplicate imports
      49c98d14
  36. 07 Apr, 2006 1 commit
    • Simon Marlow's avatar
      Reorganisation of the source tree · 0065d5ab
      Simon Marlow authored
      Most of the other users of the fptools build system have migrated to
      Cabal, and with the move to darcs we can now flatten the source tree
      without losing history, so here goes.
      
      The main change is that the ghc/ subdir is gone, and most of what it
      contained is now at the top level.  The build system now makes no
      pretense at being multi-project, it is just the GHC build system.
      
      No doubt this will break many things, and there will be a period of
      instability while we fix the dependencies.  A straightforward build
      should work, but I haven't yet fixed binary/source distributions.
      Changes to the Building Guide will follow, too.
      0065d5ab
  37. 06 Jan, 2006 1 commit
    • simonmar's avatar
      [project @ 2006-01-06 16:30:17 by simonmar] · 9d7da331
      simonmar authored
      Add support for UTF-8 source files
      
      GHC finally has support for full Unicode in source files.  Source
      files are now assumed to be UTF-8 encoded, and the full range of
      Unicode characters can be used, with classifications recognised using
      the implementation from Data.Char.  This incedentally means that only
      the stage2 compiler will recognise Unicode in source files, because I
      was too lazy to port the unicode classifier code into libcompat.
      
      Additionally, the following synonyms for keywords are now recognised:
      
        forall symbol 	(U+2200)	forall
        right arrow   	(U+2192)	->
        left arrow   		(U+2190)	<-
        horizontal ellipsis 	(U+22EF)	..
      
      there are probably more things we could add here.
      
      This will break some source files if Latin-1 characters are being used.
      In most cases this should result in a UTF-8 decoding error.  Later on
      if we want to support more encodings (perhaps with a pragma to specify
      the encoding), I plan to do it by recoding into UTF-8 before parsing.
      
      Internally, there were some pretty big changes:
      
        - FastStrings are now stored in UTF-8
      
        - Z-encoding has been moved right to the back end.  Previously we
          used to Z-encode every identifier on the way in for simplicity,
          and only decode when we needed to show something to the user.
          Instead, we now keep every string in its UTF-8 encoding, and
          Z-encode right before printing it out.  To avoid Z-encoding the
          same string multiple times, the Z-encoding is cached inside the
          FastString the first time it is requested.
      
          This speeds up the compiler - I've measured some definite
          improvement in parsing at least, and I expect compilations overall
          to be faster too.  It also cleans up a lot of cruft from the
          OccName interface.  Z-encoding is nicely hidden inside the
          Outputable instance for Names & OccNames now.
      
        - StringBuffers are UTF-8 too, and are now represented as
          ForeignPtrs.
      
        - I've put together some test cases, not by any means exhaustive,
          but there are some interesting UTF-8 decoding error cases that
          aren't obvious.  Also, take a look at unicode001.hs for a demo.
      9d7da331
  38. 31 Mar, 2005 1 commit