Remove dead code from vectorizable_store

There's dead code in the else block of a if (!costing_p) block,
after trivial pruning only setting of 'op' remains but that has
no further uses downstream.  I found this looking for remaining
(must-be-dead) uses of vect_get_vec_defs_for_operand.

	* tree-vect-stmts.cc (vectorizable_store): Remove trivially
	dead code.

diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 26a0850a19d81ff2b1217d2f9071e60d5bad3051..26cd19c50f746bafc6869f4289892ab10e2027b5 100644 (file)
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -9069,39 +9069,6 @@ vectorizable_store (vec_info *vinfo,
       if (mask)
        vec_mask = vec_masks[0];
     }
-  else
-    {
-      /* For interleaved stores we collect vectorized defs for all the
-        stores in the group in DR_CHAIN. DR_CHAIN is then used as an
-        input to vect_permute_store_chain().
-
-        If the store is not grouped, DR_GROUP_SIZE is 1, and DR_CHAIN
-        is of size 1.  */
-      stmt_vec_info next_stmt_info = first_stmt_info;
-      for (i = 0; i < group_size; i++)
-       {
-         /* Since gaps are not supported for interleaved stores,
-            DR_GROUP_SIZE is the exact number of stmts in the chain.
-            Therefore, NEXT_STMT_INFO can't be NULL_TREE.  In case
-            that there is no interleaving, DR_GROUP_SIZE is 1,
-            and only one iteration of the loop will be executed.  */
-         op = vect_get_store_rhs (next_stmt_info);
-         if (!costing_p)
-           {
-             vect_get_vec_defs_for_operand (vinfo, next_stmt_info,
-                                            1, op, gvec_oprnds[i]);
-             vec_oprnd = (*gvec_oprnds[i])[0];
-             dr_chain.quick_push (vec_oprnd);
-           }
-         next_stmt_info = DR_GROUP_NEXT_ELEMENT (next_stmt_info);
-       }
-      if (mask && !costing_p)
-       {
-         vect_get_vec_defs_for_operand (vinfo, stmt_info, 1,
-                                        mask, &vec_masks, mask_vectype);
-         vec_mask = vec_masks[0];
-       }
-    }
 
   /* We should have catched mismatched types earlier.  */
   gcc_assert (costing_p