1. 05 Sep, 2007 6 commits
    • Ben.Lippmeier@anu.edu.au's avatar
      Refactor MachRegs.trivColorable to do unboxed accumulation · a8312580
      Ben.Lippmeier@anu.edu.au authored
      trivColorable was soaking up total 31% time, 41% alloc when
      compiling SHA1.lhs with -O2 -fregs-graph on x86.
      
      Refactoring to use unboxed accumulators and walk directly
      over the UniqFM holding the set of conflicts reduces this 
      to 17% time, 6% alloc.
      a8312580
    • nr@eecs.harvard.edu's avatar
      change of representation for GenCmm, GenCmmTop, CmmProc · 16dc208a
      nr@eecs.harvard.edu authored
      The type parameter to a C-- procedure now represents a control-flow
      graph, not a single instruction.  The newtype ListGraph preserves the 
      current representation while enabling other representations and a
      sensible way of prettyprinting.  Except for a few changes in the
      prettyprinter the new compiler binary should be bit-for-bit identical
      to the old.
      16dc208a
    • nr@eecs.harvard.edu's avatar
      807b00a7
    • Simon Marlow's avatar
      fix warnings · 81f944da
      Simon Marlow authored
      81f944da
    • Simon Marlow's avatar
      FIX #1650: ".boot modules interact badly with the ghci debugger" · e2782137
      Simon Marlow authored
      In fact hs-boot files had nothing to do with it: the problem was that
      GHCi would forget the breakpoint information for a module that had
      been reloaded but not recompiled.  It's amazing that we never noticed
      this before.
      
      The ModBreaks were in the ModDetails, which was the wrong place.  When
      we avoid recompiling a module, ModDetails is regenerated from ModIface
      by typecheckIface, and at that point it has no idea what the ModBreaks
      should be, so typecheckIface made it empty.  The right place for the
      ModBreaks to go is with the Linkable, which is retained when
      compilation is avoided.  So now I've placed the ModBreaks in with the
      CompiledByteCode, which also makes it clear that only byte-code
      modules have breakpoints.
      
      This fixes break022/break023
      e2782137
    • Simon Marlow's avatar
      Fix boot: it was avoiding autoreconfing · b1f0cd39
      Simon Marlow authored
      Two problems here: find needs to dereference symbolic links (-L
      option, I really hope that's portable), and we need to notice when
      aclocal.m4 is updated.  
      
      Somehow I think this was easier when it just always ran
      autoreconf... what was wrong with that?
      b1f0cd39
  2. 04 Sep, 2007 4 commits
  3. 05 Sep, 2007 2 commits
  4. 03 Sep, 2007 1 commit
    • Ben.Lippmeier@anu.edu.au's avatar
      Do conservative coalescing in register allocator · a7f409e8
      Ben.Lippmeier@anu.edu.au authored
      Avoid coalescing nodes in the register conflict graph if the
      new node will not be trivially colorable. Also remove the
      front end aggressive coalescing pass.
        
      For typical Haskell code the graph coloring allocator now does
      about as well as the linear allocator.
        
      For code with a large amount of register pressure it does much
      better, but takes longer.
        
      For SHA1.lhs from darcs on x86
         
                spills    reloads    reg-reg-moves
                inserted   inserted  left in code   compile-time
        linear    1068      1311        229            7.69(s)
        graph      387       902        340           16.12(s)
      a7f409e8
  5. 05 Sep, 2007 1 commit
    • rl@cse.unsw.edu.au's avatar
      Use dlsym on OS X if available · 6f69004a
      rl@cse.unsw.edu.au authored
      On OS X 10.4 and newer, we have to use dlsym because the old NS* interface has
      been deprecated. The patch checks for HAVE_DLFCN_H instead of switching on
      the OS version.
      
      There is one additional quirk: although OS X prefixes global symbols with an
      underscore, dlsym expects its argument NOT to have a leading underscore. As a
      hack, we simply strip it off in lookupSymbol. Something a bit more elaborate
      might be cleaner.
      6f69004a
  6. 04 Sep, 2007 2 commits
  7. 05 Sep, 2007 2 commits
  8. 04 Sep, 2007 8 commits
  9. 03 Sep, 2007 9 commits
  10. 28 Aug, 2007 1 commit
  11. 03 Sep, 2007 3 commits
    • Simon Marlow's avatar
      FIX #1623: disable the timer signal when the system is idle (threaded RTS only) · 8d71be7c
      Simon Marlow authored
      Having a timer signal go off regularly is bad for power consumption,
      and generally bad practice anyway (it means the app cannot be
      completely swapped out, for example).  Fortunately the threaded RTS
      already had a way to detect when the system was idle, so that it can
      trigger a GC and thereby find deadlocks.  After performing the GC, we
      now turn off timer signals, and re-enable them again just before
      running any Haskell code.
      8d71be7c
    • Simon Marlow's avatar
      FIX #1648: rts_mkWord64 was missing · 37e27d92
      Simon Marlow authored
      Also noticed a few others from RtsAPI were missing, so I added them all
      37e27d92
    • Ross Paterson's avatar
      FIX for #1080 · 9630111a
      Ross Paterson authored
      Arrow desugaring now uses a private version of collectPatBinders and
      friends, in order to include dictionary bindings from ConPatOut.
      
      It doesn't fix arrowrun004 (#1333), though.
      9630111a
  12. 31 Aug, 2007 1 commit