patch applied (ghc): DPH options updated

[Manuel Chakravarty]

Sun Jan 23 20:36:17 PST 2011  Manuel M T Chakravarty <chak at cse.unsw.edu.au>
  * DPH options updated
  - '-Odph' is now '-O2 -fsimplifier-phases=3 -fsimplifier-iterations=20'
  - The new option '-fdph-none' is the default; it indicates that no DPH
    backend is selected and is the only valid option if the DPH libraries
    are not installed.  If vectorisation is attempted with -fdph-none a
    suitable error message is generated.
  - Hence, '-fdph-par' (or '-fdph-seq') needs to be explicitly selected
    when using vectorisation and when linking vectorised code.  (There
    seems to be no elegant way to avoid that.)

    M ./compiler/basicTypes/Module.lhs -1 +1
    M ./compiler/main/DynFlags.hs -28 +26
    M ./compiler/main/Packages.lhs -8 +13

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc;a=darcs_commitdiff;h=20110124043617-6295e-e93f5e61a00409ae14d591318b70abeb9ab108a4.gz