java/openjdk6/files/icedtea/security/7198606.patch


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# HG changeset patch
# User andrew
# Date 1349974451 -3600
# Node ID 8319efc7c840d099832e06db7a50dcfb95bfd4aa
# Parent  a148157cd348fe4c251063db7d3973a83cfcf483
7198606: Improve VM optimization
Reviewed-by: roland, twisti

diff --git a/src/share/vm/opto/loopTransform.cpp b/src/share/vm/opto/loopTransform.cpp
--- hotspot/src/share/vm/opto/loopTransform.cpp
+++ hotspot/src/share/vm/opto/loopTransform.cpp
@@ -2721,6 +2721,8 @@
   result_mem = new (C, 1) ProjNode(call,TypeFunc::Memory);
   _igvn.register_new_node_with_optimizer(result_mem);
 
+/* Disable following optimization until proper fix (add missing checks).
+
   // If this fill is tightly coupled to an allocation and overwrites
   // the whole body, allow it to take over the zeroing.
   AllocateNode* alloc = AllocateNode::Ideal_allocation(base, this);
@@ -2744,6 +2746,7 @@
 #endif
     }
   }
+*/
 
   // Redirect the old control and memory edges that are outside the loop.
   Node* exit = head->loopexit()->proj_out(0);