patch applied (ghc-6.6/ghc): PowerPC NCG: support conditional branches outside +-32KB

Ian Lynagh <[email protected]> Tue, 19 Dec 2006 12:31:34 -0800

Newsgroups	gmane.comp.lang.haskell.cvs.all
Message-ID	<20061219203134.GA14550__38941.7112259709$1166560338$gmane$org@cvs.haskell.org>

Wed Dec 13 05:38:08 PST 2006  [email protected]
  * PowerPC NCG: support conditional branches outside +-32KB
  
  Work around the PowerPC architecture's +-32KB limitation for conditional
  branches by conditionally skipping an unconditional branch instead
  (unconditional branches have a +-32MB range).
  
  This requires an extra pass over the basic blocks for each CmmTop after
  block sequencing, to determine which branches are "far".
  
  Fixes ticket #709, "Fixup too large" error with -fasm on PowerPC

    M ./compiler/nativeGen/AsmCodeGen.lhs -1 +41
    M ./compiler/nativeGen/MachInstrs.hs -1 +18
    M ./compiler/nativeGen/PprMach.hs +13
    M ./compiler/nativeGen/RegAllocInfo.hs +4