[tree-ssa] Patch ping

[Zdenek Dvorak]

Hello,

sorry for getting nervous when the patch is not commented in a week, but
most of them are part of a work in progress, so not knowing their status
is problematic for me:

http://gcc.gnu.org/ml/gcc-patches/2003-12/msg00607.html
  -- basic block merging

http://gcc.gnu.org/ml/gcc-patches/2003-12/msg00667.html
  -- basic block splitting

http://gcc.gnu.org/ml/gcc-patches/2003-12/msg00824.html
  -- loop header copying

http://gcc.gnu.org/ml/gcc-patches/2003-12/msg00864.html
  -- accumulator transformation for tail recursion

Zdenek