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diff src/share/vm/opto/macro.cpp @ 3345:bad7ecd0b6ed

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5091921: Sign flip issues in loop optimizer Summary: Fix integer overflow problem in the code generated by loop optimizer. Reviewed-by: never
author kvn
date Wed, 04 May 2011 13:12:42 -0700
parents 149bb459be66
children 293f68bda347
line wrap: on
line diff
--- a/src/share/vm/opto/macro.cpp	Wed May 04 03:42:58 2011 -0700
+++ b/src/share/vm/opto/macro.cpp	Wed May 04 13:12:42 2011 -0700
@@ -2154,6 +2154,11 @@
       debug_only(int old_macro_count = C->macro_count(););
       if (n->is_AbstractLock()) {
         success = eliminate_locking_node(n->as_AbstractLock());
+      } else if (n->Opcode() == Op_LoopLimit) {
+        // Remove it from macro list and put on IGVN worklist to optimize.
+        C->remove_macro_node(n);
+        _igvn._worklist.push(n);
+        success = true;
       } else if (n->Opcode() == Op_Opaque1 || n->Opcode() == Op_Opaque2) {
         _igvn.replace_node(n, n->in(1));
         success = true;