Merge pull request eclipse-omr#8056 from mpirvu/knot

Add options to control KnownObjectTable caching

Author: dsouzai

compiler/control/OMROptions.cpp

@@ -651,6 +651,8 @@ TR::OptionTable OMR::Options::_jitOptions[] = {
      "F", NOT_IN_SUBSET },
     { "disableKnownObjectTable", "O\tdisable support for including heap object info in symbol references",
      SET_OPTION_BIT(TR_DisableKnownObjectTable), "F" },
+    { "disableKnownObjectTableCaching", "O\tdisable JITServer caching of known object info",
+     SET_OPTION_BIT(TR_DisableKnownObjectTableCaching), "F" },
     { "disableLastITableCache", "C\tdisable using class lastITable cache for interface dispatches",
      SET_OPTION_BIT(TR_DisableLastITableCache), "F" },
     { "disableLeafRoutineDetection", "O\tdisable lleaf routine detection on zlinux",
@@ -1233,6 +1235,8 @@ TR::OptionTable OMR::Options::_jitOptions[] = {
     { "enableJProfiling", "O\tenable JProfiling", SET_OPTION_BIT(TR_EnableJProfiling), "F" },
     { "enableJProfilingInProfilingCompilations",
      "O\tEnable the use of jprofiling instrumentation in profiling compilations", RESET_OPTION_BIT(TR_DisableJProfilingInProfilingCompilations), "F" },
+    { "enableKnownObjectTableCachingVerification", "O\tverify the cached info about known object info",
+     SET_OPTION_BIT(TR_EnableKnownObjectTableCachingVerification), "F" },
     { "enableLastRetrialLogging",
      "O\tenable fullTrace logging for last compilation attempt. Needs to have a log defined on the command line", SET_OPTION_BIT(TR_EnableLastCompilationRetrialLogging), "F" },
     { "enableLocalVPSkipLowFreqBlock", "O\tSkip processing of low frequency blocks in localVP",

compiler/control/OMROptions.hpp

@@ -464,8 +464,8 @@ enum TR_CompilationOptions {
     TR_DisableInlineWriteBarriersRT                          = 0x08000000 + 11, // RTJ
     TR_DisableWarmCallGraphTooBigHeuristic                   = 0x10000000 + 11,
     TR_DisableNewInliningInfrastructure                      = 0x20000000 + 11,
-    // Available                                             = 0x40000000 + 11,
-    // Available                                             = 0x80000000 + 11,
+    TR_DisableKnownObjectTableCaching                        = 0x40000000 + 11,
+    TR_EnableKnownObjectTableCachingVerification             = 0x80000000 + 11,
 
     // Option word 12
     TR_ForceCStdIOForLoggers                                 = 0x00000020 + 12,