This patch extends the fix in
http://gcc.gnu.org/ml/gcc-patches/2007-06/msg01557.html
to handle the case of clobbers inside conditional calls.

This problem caused the regression of gfortran.dg/matmul_3.f90 on the
ia-64 in addition to the regression cited in this pr.

Tested on ppc-32, ia-64 and x86-64.

2007-07-26  Kenneth Zadeck <zadeck@naturalbridge.com>

    PR middle-end/32749
   
    * df-problems.c (df_note_bb_compute): Handle case of clobber
    inside conditional call.  
   

ok to commit?

kenny