re PR tree-optimization/87117 (ICE in…

re PR tree-optimization/87117 (ICE in eliminate_dom_walker::eliminate_cleanup(bool) at gcc/gcc/tree-ssa-sccvn.c:5431 since r263875)

2018-08-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87117
	* tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_cleanup):
	Handle removed stmt without LHS (GIMPLE_NOP).

From-SVN: r263912

gcc/ChangeLog

 2018-08-28  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/87117
+	* tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_cleanup):
+	Handle removed stmt without LHS (GIMPLE_NOP).
+
+2018-08-28  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/87117
 	* tree-ssa-sccvn.c (fully_constant_vn_reference_p): Exclude
 	void which is is_gimple_reg_type by checking for COMPLETE_TYPE_P.
 

gcc/tree-ssa-sccvn.c

@@ -5425,9 +5425,7 @@ eliminate_dom_walker::eliminate_cleanup (bool region_p)
 		  do_release_defs = false;
 		}
 	    }
-	  else
-	    {
-	      tree lhs = gimple_get_lhs (stmt);
+	  else if (tree lhs = gimple_get_lhs (stmt))
 	    if (TREE_CODE (lhs) == SSA_NAME
 		&& !has_zero_uses (lhs))
 	      {
@@ -5450,7 +5448,6 @@ eliminate_dom_walker::eliminate_cleanup (bool region_p)
 		  }
 	      }
 	}
-	}
 
       if (dump_file && (dump_flags & TDF_DETAILS))
 	{