*** old/src/share/vm/opto/c2_globals.hpp	Thu Apr 28 15:53:47 2011
--- new/src/share/vm/opto/c2_globals.hpp	Thu Apr 28 15:53:47 2011

*** 181,190 ****
--- 181,205 ----
            "Trace generation of loop predicates")                            \
                                                                              \
    develop(bool, TraceLoopOpts, false,                                       \
            "Trace executed loop optimizations")                              \
                                                                              \
+   diagnostic(bool, LoopLimitCheck, true,                                    \
+           "Generate a loop limits check for overflow")                      \
+                                                                             \
+   develop(bool, TraceLoopLimitCheck, false,                                 \
+           "Trace generation of loop limits checks")                         \
+                                                                             \
+   diagnostic(bool, RangeLimitCheck, true,                                   \
+           "Additional overflow checks during range check elimination")      \
+                                                                             \
+   develop(bool, TraceRangeLimitCheck, false,                                \
+           "Trace additional overflow checks in RCE")                        \
+                                                                             \
+   diagnostic(bool, UnrollLimitCheck, true,                                  \
+           "Additional overflow checks during loop unroll")                  \
+                                                                             \
    product(bool, OptimizeFill, false,                                        \
            "convert fill/copy loops into intrinsic")                         \
                                                                              \
    develop(bool, TraceOptimizeFill, false,                                   \
            "print detailed information about fill conversion")               \