[PATCH] [PR rtl-optimization/97249]Simplify vec_select of paradoxical subreg.

[Hongtao Liu]

Hi:
  For rtx like
  (vec_select:V2SI (subreg:V4SI (inner:V2SI) 0)
                   (parallel [(const_int 0) (const_int 1)]))
 it could be simplified as inner.

  Bootstrap is ok, regression test on i386 backend is ok.

gcc/ChangeLog
        PR rtl-optimization/97249
        * simplify-rtx.c (simplify_binary_operation_1): Simplify
        vec_select of paradoxical subreg.

gcc/testsuite/ChangeLog

        * gcc.target/i386/pr97249-1.c: New test.

-- 
BR,
Hongtao
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