1. 29 May, 2008 2 commits
    • dias@eecs.harvard.edu's avatar
      Replacing copyins and copyouts with data-movement instructions · 0d80489c
      dias@eecs.harvard.edu authored
      o Moved BlockId stuff to a new file to avoid module recursion
      o Defined stack areas for parameter-passing locations and spill slots
      o Part way through replacing copy in and copy out nodes
        - added movement instructions for stack pointer
        - added movement instructions for call and return parameters
          (but not with the proper calling conventions)
      o Inserting spills and reloads for proc points is now procpoint-aware
        (it was relying on the presence of a CopyIn node as a proxy for
         procpoint knowledge)
      o Changed ZipDataflow to expect AGraphs (instead of being polymorphic in
         the type of graph)
      0d80489c
    • dias@eecs.harvard.edu's avatar
      Cmm back end upgrades · 25628e27
      dias@eecs.harvard.edu authored
      Several changes in this patch, partially bug fixes, partially new code:
      o bug fixes in ZipDataflow
         - added some checks to verify that facts converge
         - removed some erroneous checks of convergence on entry nodes
         - added some missing applications of transfer functions
      o changed dataflow clients to use ZipDataflow, making ZipDataflow0 obsolete
      o eliminated DFA monad (no need for separate analysis and rewriting monads with ZipDataflow)
      o started stack layout changes
         - no longer generating CopyIn and CopyOut nodes (not yet fully expunged though)
         - still not using proper calling conventions
      o simple new optimizations:
         - common block elimination
            -- have not yet tried to move the Adams opt out of CmmProcPointZ
         - block concatenation
      o piped optimization fuel up to the HscEnv
         - can be limited by a command-line flag
         - not tested, and probably not yet properly used by clients
      o added unique supply to FuelMonad, also lifted unique supply to DFMonad
      25628e27