genmatch.c (dt_simplify::gen_1): For generic wrap all multi-result-use captures in a SAVE_EXPR.

2015-11-26  Richard Biener  <rguenther@suse.de>

	* genmatch.c (dt_simplify::gen_1): For generic wrap all
	multi-result-use captures in a SAVE_EXPR.

From-SVN: r230955

gcc/ChangeLog

+2015-11-26  Richard Biener  <rguenther@suse.de>
+
+	* genmatch.c (dt_simplify::gen_1): For generic wrap all
+	multi-result-use captures in a SAVE_EXPR.
+
 2015-11-26  Matthew Wahab  <matthew.wahab@arm.com>
 
 	* config/aarch64/aarch64.h (AARCH64_ISA_RDMA): New.

gcc/genmatch.c

@@ -3112,16 +3112,10 @@ dt_simplify::gen_1 (FILE *f, int indent, bool gimple, operand *result)
 	      {
 		if (cinfo.info[i].same_as != (unsigned)i)
 		  continue;
-		if (!cinfo.info[i].force_no_side_effects_p
-		    && cinfo.info[i].result_use_count > 1)
-		  {
-		    fprintf_indent (f, indent,
-				    "if (TREE_SIDE_EFFECTS (captures[%d]))\n",
-				    i);
-		    fprintf_indent (f, indent,
-				    "  captures[%d] = save_expr (captures[%d]);\n",
-				    i, i);
-		  }
+		if (cinfo.info[i].result_use_count > 1)
+		  fprintf_indent (f, indent,
+				  "captures[%d] = save_expr (captures[%d]);\n",
+				  i, i);
 	      }
 	  for (unsigned j = 0; j < e->ops.length (); ++j)
 	    {