4c78c26b80
2009-06-27 Paolo Bonzini <bonzini@gnu.org>
* df-problems.c (df_set_seen, df_unset_seen): Delete.
(df_rd_local_compute, df_md_local_compute): Inline them.
(df_md_scratch): New.
(df_md_alloc, df_md_free): Allocate/free it.
(df_md_local_compute): Only include live registers in init.
(df_md_transfer_function): Prune the in-set computed by
the confluence function, and the gen-set too.
From-SVN: r149011
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