[patch] vectorizer: switch to use standard_iv_increment_position

[Dorit Naishlos]

The tree-vectorizer.c part for
http://gcc.gnu.org/ml/gcc-patches/2005-01/msg02128.html.

Bootstrapped and tested on powerpc-darwin.

ok for mainline?

thanks,
dorit

Changelog:

      * tree-vectorizer.c (slpeel_make_loop_iterate_ntimes): Call
      standard_iv_increment_position. Remove call to bsi_next
      (no need to bump the iterator anymore).
      (vect_create_index_for_vector_ref): Call
      standard_iv_increment_position. Remove second function argument.
      (vect_finish_stmt_generation): Remove call to bsi_next
      (no need to bump the iterator anymore).
      (vect_create_data_ref_ptr): Remove second argument (bsi) in call
      to vect_create_index_for_vector_ref.

Patch:

(See attached file: increment3.patch)
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