--- old/src/share/vm/opto/chaitin.hpp	2013-10-09 23:37:37.765890686 +0200
+++ new/src/share/vm/opto/chaitin.hpp	2013-10-09 23:37:37.693890686 +0200
@@ -46,6 +46,7 @@
 
 #define OPTO_DEBUG_SPLIT_FREQ  BLOCK_FREQUENCY(0.001)
 #define OPTO_LRG_HIGH_FREQ     BLOCK_FREQUENCY(0.25)
+#define LRG_All_STACK_SIZE     1048575
 
 //------------------------------LRG--------------------------------------------
 // Live-RanGe structure.
@@ -95,9 +96,9 @@
   RegMask _mask;                // Allowed registers for this LRG
   uint _mask_size;              // cache of _mask.Size();
 public:
-  int compute_mask_size() const { return _mask.is_AllStack() ? 65535 : _mask.Size(); }
+  int compute_mask_size() const { return _mask.is_AllStack() ? LRG_All_STACK_SIZE : _mask.Size(); }
   void set_mask_size( int size ) {
-    assert((size == 65535) || (size == (int)_mask.Size()), "");
+    assert((size == LRG_All_STACK_SIZE) || (size == (int)_mask.Size()), "");
     _mask_size = size;
 #ifdef ASSERT
     _msize_valid=1;
--- old/src/share/vm/opto/ifg.cpp	2013-10-09 23:37:37.765890686 +0200
+++ new/src/share/vm/opto/ifg.cpp	2013-10-09 23:37:37.693890686 +0200
@@ -677,7 +677,7 @@
             } else {            // Common case: size 1 bound removal
               if( lrg.mask().Member(r_reg) ) {
                 lrg.Remove(r_reg);
-                lrg.set_mask_size(lrg.mask().is_AllStack() ? 65535:old_size-1);
+                lrg.set_mask_size(lrg.mask().is_AllStack() ? LRG_All_STACK_SIZE : old_size - 1);
               }
             }
             // If 'l' goes completely dry, it must spill.