[Committed] Fix PR tree-opt/32231, Segfault in verify_ssa_name (GC issue)

[Andrew_Pinski@PlayStation.Sony.Com]

Hi,
  The problem here is that we forget to call update_stmt after changing 
the right hand side in the vectorizer while processing calls.  This patch 
adds the needed update_stmt.

Committed as obvious after a bootstrap/test on i686-linux-gnu.

Thanks,
Andrew Pinski

ChangeLog:

        * tree-vect-transform.c (vectorizable_call): Call update_stmt 
after
        changing the right hand side of the assignment.


        * gcc.target/i386/vectorize4.c: New test.

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