[autovect, patch] Handle vector shift with scalar argument in SLP

[Ira Rosen <IRAR at il dot ibm dot com>]

Vector shifts with scalar shift argument require that all the scalar stmts
packed together into one vector shift will have the same shift value. This
patch adds support of such operations by loop-aware SLP.

Bootstrapped and tested on x86_64-linux and ppc-linux. Committed to
autovect-branch.

Ira

ChangeLog:

      * tree-vect-analyze.c: Include recog.h.
      (vect_build_slp_tree): Check that the shift values are equal
      for vector shift with scalar shift argument. Fix typo in error
message.
      * tree-vect-transform.c (vectorizable_operation): Don't fail in case
of
      shift in SLP.
      * Makefile.in (tree-vect-analyze.o): Depend on recog.h.

(See attached file: shifts.txt)

Attachment: shifts.txt
Description: Text document