1. 19 Oct, 2012 1 commit
    • Simon Marlow's avatar
      Remove the old codegen · 6fbd46b0
      Simon Marlow authored
      Except for CgUtils.fixStgRegisters that is used in the NCG and LLVM
      backends, and should probably be moved somewhere else.
      6fbd46b0
  2. 08 Oct, 2012 1 commit
    • Simon Marlow's avatar
      Produce new-style Cmm from the Cmm parser · a7c0387d
      Simon Marlow authored
      The main change here is that the Cmm parser now allows high-level cmm
      code with argument-passing and function calls.  For example:
      
      foo ( gcptr a, bits32 b )
      {
        if (b > 0) {
           // we can make tail calls passing arguments:
           jump stg_ap_0_fast(a);
        }
      
        return (x,y);
      }
      
      More details on the new cmm syntax are in Note [Syntax of .cmm files]
      in CmmParse.y.
      
      The old syntax is still more-or-less supported for those occasional
      code fragments that really need to explicitly manipulate the stack.
      However there are a couple of differences: it is now obligatory to
      give a list of live GlobalRegs on every jump, e.g.
      
        jump %ENTRY_CODE(Sp(0)) [R1];
      
      Again, more details in Note [Syntax of .cmm files].
      
      I have rewritten most of the .cmm files in the RTS into the new
      syntax, except for AutoApply.cmm which is generated by the genapply
      program: this file could be generated in the new syntax instead and
      would probably be better off for it, but I ran out of enthusiasm.
      
      Some other changes in this batch:
      
       - The PrimOp calling convention is gone, primops now use the ordinary
         NativeNodeCall convention.  This means that primops and "foreign
         import prim" code must be written in high-level cmm, but they can
         now take more than 10 arguments.
      
       - CmmSink now does constant-folding (should fix #7219)
      
       - .cmm files now go through the cmmPipeline, and as a result we
         generate better code in many cases.  All the object files generated
         for the RTS .cmm files are now smaller.  Performance should be
         better too, but I haven't measured it yet.
      
       - RET_DYN frames are removed from the RTS, lots of code goes away
      
       - we now have some more canned GC points to cover unboxed-tuples with
         2-4 pointers, which will reduce code size a little.
      a7c0387d
  3. 20 Jun, 2012 1 commit
  4. 04 Nov, 2011 1 commit
  5. 24 Jan, 2011 1 commit
    • Simon Marlow's avatar
      Merge in new code generator branch. · 889c084e
      Simon Marlow authored
      This changes the new code generator to make use of the Hoopl package
      for dataflow analysis.  Hoopl is a new boot package, and is maintained
      in a separate upstream git repository (as usual, GHC has its own
      lagging darcs mirror in http://darcs.haskell.org/packages/hoopl).
      
      During this merge I squashed recent history into one patch.  I tried
      to rebase, but the history had some internal conflicts of its own
      which made rebase extremely confusing, so I gave up. The history I
      squashed was:
      
        - Update new codegen to work with latest Hoopl
        - Add some notes on new code gen to cmm-notes
        - Enable Hoopl lag package.
        - Add SPJ note to cmm-notes
        - Improve GC calls on new code generator.
      
      Work in this branch was done by:
         - Milan Straka <fox@ucw.cz>
         - John Dias <dias@cs.tufts.edu>
         - David Terei <davidterei@gmail.com>
      
      Edward Z. Yang <ezyang@mit.edu> merged in further changes from GHC HEAD
      and fixed a few bugs.
      889c084e
  6. 09 Dec, 2008 1 commit
  7. 14 Aug, 2008 1 commit
    • dias@eecs.harvard.edu's avatar
      Merging in the new codegen branch · 176fa33f
      dias@eecs.harvard.edu authored
      This merge does not turn on the new codegen (which only compiles
      a select few programs at this point),
      but it does introduce some changes to the old code generator.
      
      The high bits:
      1. The Rep Swamp patch is finally here.
         The highlight is that the representation of types at the
         machine level has changed.
         Consequently, this patch contains updates across several back ends.
      2. The new Stg -> Cmm path is here, although it appears to have a
         fair number of bugs lurking.
      3. Many improvements along the CmmCPSZ path, including:
         o stack layout
         o some code for infotables, half of which is right and half wrong
         o proc-point splitting
      176fa33f
  8. 21 Sep, 2007 1 commit
  9. 04 Sep, 2007 1 commit
  10. 03 Sep, 2007 1 commit
  11. 01 Sep, 2007 1 commit
  12. 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
  13. 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
  14. 18 Mar, 2005 1 commit
    • simonmar's avatar
      [project @ 2005-03-18 13:37:27 by simonmar] · d1c1b7d0
      simonmar authored
      Flags cleanup.
      
      Basically the purpose of this commit is to move more of the compiler's
      global state into DynFlags, which is moving in the direction we need
      to go for the GHC API which can have multiple active sessions
      supported by a single GHC instance.
      
      Before:
      
      $ grep 'global_var' */*hs | wc -l
           78
      
      After:
      
      $ grep 'global_var' */*hs | wc -l
           27
      
      Well, it's an improvement.  Most of what's left won't really affect
      our ability to host multiple sessions.
      
      Lots of static flags have become dynamic flags (yay!).  Notably lots
      of flags that we used to think of as "driver" flags, like -I and -L,
      are now dynamic.  The most notable static flags left behind are the
      "way" flags, eg. -prof.  It would be nice to fix this, but it isn't
      urgent.
      
      On the way, lots of cleanup has happened.  Everything related to
      static and dynamic flags lives in StaticFlags and DynFlags
      respectively, and they share a common command-line parser library in
      CmdLineParser.  The flags related to modes (--makde, --interactive
      etc.) are now private to the front end: in fact private to Main
      itself, for now.
      d1c1b7d0
  15. 13 Aug, 2004 1 commit