re PR tree-optimization/89049 (Unexpected vectorization)

2019-01-25  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/89049
	* tree-vect-loop.c (vect_compute_single_scalar_iteration_cost):
	Look at the pattern stmt to determine if the stmt is vectorized.

From-SVN: r268264

gcc/ChangeLog

+2019-01-25  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/89049
+	* tree-vect-loop.c (vect_compute_single_scalar_iteration_cost):
+	Look at the pattern stmt to determine if the stmt is vectorized.
+
 2019-01-25  Richard Sandiford  <richard.sandiford@arm.com>
 
 	* config/aarch64/aarch64-sve.md (*pred_mov<mode>)

gcc/tree-vect-loop.c

@@ -1100,11 +1100,11 @@ vect_compute_single_scalar_iteration_cost (loop_vec_info loop_vinfo)
             continue;
 
           /* Skip stmts that are not vectorized inside the loop.  */
-          if (stmt_info
-              && !STMT_VINFO_RELEVANT_P (stmt_info)
-              && (!STMT_VINFO_LIVE_P (stmt_info)
-                  || !VECTORIZABLE_CYCLE_DEF (STMT_VINFO_DEF_TYPE (stmt_info)))
-	      && !STMT_VINFO_IN_PATTERN_P (stmt_info))
+	  stmt_vec_info vstmt_info = vect_stmt_to_vectorize (stmt_info);
+          if (!STMT_VINFO_RELEVANT_P (vstmt_info)
+              && (!STMT_VINFO_LIVE_P (vstmt_info)
+                  || !VECTORIZABLE_CYCLE_DEF
+			(STMT_VINFO_DEF_TYPE (vstmt_info))))
             continue;
 
 	  vect_cost_for_stmt kind;