cvs commit: fptools/ghc/compiler/codeGen CgStackery.lhs

[Simon Marlow]

simonmar    2001/09/12 06:01:02 PDT

  Modified files:        (Branch: ghc-5-02-branch)
    ghc/compiler/codeGen CgStackery.lhs 
  Log:
  Bugfix: there was an implicit assumption that the list of slots passed
  to freeStackSlots was already sorted, whereas in fact this wasn't the
  case for at least one call.  Now we explicitly sort the list in
  freeStackSlots, removing the hidden assumption.
  
  The symptoms of this bug include crashes (perhaps the "AsmCodeGen"
  crash), and a tendency to grow the stack a lot when let-no-escapes are
  involved (because the bug caused fragmentation of the stack free list,
  so we weren't re-using free slots properly).
  
  Revision  Changes    Path
  1.17.2.1  +3 -2      fptools/ghc/compiler/codeGen/CgStackery.lhs