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diff src/share/vm/opto/loopUnswitch.cpp @ 2383:9dc311b8473e

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7008866: Missing loop predicate for loop with multiple entries Summary: Add predicates when loop head bytecode is parsed instead of when back branch bytecode is parsed. Reviewed-by: never
author kvn
date Mon, 21 Mar 2011 11:28:14 -0700
parents f95d63e2154a
children 1d1603768966 08eb13460b3a
line wrap: on
line diff
--- a/src/share/vm/opto/loopUnswitch.cpp	Mon Mar 21 02:30:49 2011 -0700
+++ b/src/share/vm/opto/loopUnswitch.cpp	Mon Mar 21 11:28:14 2011 -0700
@@ -110,6 +110,13 @@
   IfNode* unswitch_iff = find_unswitching_candidate((const IdealLoopTree *)loop);
   assert(unswitch_iff != NULL, "should be at least one");
 
+#ifndef PRODUCT
+  if (TraceLoopOpts) {
+    tty->print("Unswitch   %d ", head->unswitch_count()+1);
+    loop->dump_head();
+  }
+#endif
+
   // Need to revert back to normal loop
   if (head->is_CountedLoop() && !head->as_CountedLoop()->is_normal_loop()) {
     head->as_CountedLoop()->set_normal_loop();