* tree-ssa-loop-unswitch.c (tree_unswitch_single_loop): Check that
loop is optimized for speed.
From-SVN: r139834
+2008-08-31 Jan Hubicka <jh@suse.cz>
+
+ * tree-ssa-loop-unswitch.c (tree_unswitch_single_loop): Check that
+ loop is optimized for speed.
+
2008-08-31 Richard Guenther <rguenther@suse.de>
PR middle-end/37289
return false;
}
+ /* Do not unswitch in cold regions. */
+ if (optimize_loop_for_size_p (loop))
+ {
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ fprintf (dump_file, ";; Not unswitching cold loops\n");
+ return false;
+ }
+
/* The loop should not be too large, to limit code growth. */
if (tree_num_loop_insns (loop, &eni_size_weights)
> (unsigned) PARAM_VALUE (PARAM_MAX_UNSWITCH_INSNS))