[Bug middle-end/32749] [4.3 regression]: gfortran.dg/auto_array_1.f90

[Kenneth Zadeck]

This patch rearranges the updating of the local dataflow info when
building reg_dead notes.  The need for this was that processing was not
correctly handled for clobbers that occurred within conditional call
insns.  A rare case but one that at least happens on the ia-64.

This patch not only fixes the regressions listed in pr32749, but also
fixes the gfortran.dg/matmul_3.f90 on the ia-64 regressions. 

This patch was bootstrapped and regression tested yesterday on x86-64
and ia-64 and was again bootstrapped this morning on x86-64 (just to
make sure there were no interactions with richard sandiford's fixes to
closely related code that was just committed.)

Committed as revision 126987.

Kenny

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

    PR middle-end/32749
   
    * df-problems.c (df_create_unused_note): Removed do_not_gen parm
    and the updating of the live and do_not_gen sets.
    (df_note_bb_compute): Added updating of live and do_not_gen sets
    for regular defs so that the case of clobber inside conditional
    call is processed correctly.
   
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