Merge pull request #7303 from mpirvu/gra_redux2

GRA changes to reduce JIT overhead at warm opt levels
eclipse-omr · Apr 9, 2024 · 0e07ad1 · 0e07ad1
2 parents 8037ccd + 3d1b3ad
commit 0e07ad1
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Showing 5 changed files with 151 additions and 834 deletions.
diff --git a/compiler/control/OMROptions.cpp b/compiler/control/OMROptions.cpp
@@ -829,6 +829,8 @@ TR::OptionTable OMR::Options::_jitOptions[] = {
    {"GCRresetCount=",       "R<nnn>\tthe value to which the counter is reset to after being tripped by guarded counting recompilations (positive value)",
     TR::Options::setCount, offsetof(OMR::Options,_GCRResetCount), 0, "F%d"},
    {"generateCompleteInlineRanges", "O\tgenerate meta data ranges for each change in inliner depth", SET_OPTION_BIT(TR_GenerateCompleteInlineRanges), "F"},
+   {"graFreqThresholdAtWarm=", "O<nnn>\tgra threshold for block frequency for opt level less of equal to warm",
+        TR::Options::set32BitNumeric, offsetof(OMR::Options, _graFreqThresholdAtWarm), 500, "F%d"},
    {"help",               " \tdisplay this help information", TR::Options::helpOption, 0, 0, "F", NOT_IN_SUBSET},
    {"help=",              " {regex}\tdisplay help for options whose names match {regex}", TR::Options::helpOption, 1, 0, "F", NOT_IN_SUBSET},
    {"highCodeCacheOccupancyBCount=", "R<nnn>\tthe initial invocation count used during high code cache occupancy for methods with loops",
@@ -2678,6 +2680,7 @@ OMR::Options::jitPreProcess()
    _alwaysWorthInliningThreshold = 15;
    _maxLimitedGRACandidates = TR_MAX_LIMITED_GRA_CANDIDATES;
    _maxLimitedGRARegs = TR_MAX_LIMITED_GRA_REGS;
+   _graFreqThresholdAtWarm = 500;
    _counterBucketGranularity = 2;
    _minCounterFidelity = INT_MIN;
    _lastIpaOptTransformationIndex = INT_MAX;

diff --git a/compiler/control/OMROptions.hpp b/compiler/control/OMROptions.hpp
@@ -1468,6 +1468,7 @@ class OMR_EXTENSIBLE Options
       _insertGCRTrees = false;
       _maxLimitedGRACandidates = 0;
       _maxLimitedGRARegs = 0;
+      _graFreqThresholdAtWarm = 0;
       _enableGPU = 0;
       _isAOTCompile = false;
       _jProfilingMethodRecompThreshold = 0;
@@ -1822,6 +1823,7 @@ class OMR_EXTENSIBLE Options
    int32_t getAlwaysWorthInliningThreshold() const { return _alwaysWorthInliningThreshold; }
    int32_t getMaxLimitedGRACandidates()   { return _maxLimitedGRACandidates; }
    int32_t getMaxLimitedGRARegs()         { return _maxLimitedGRARegs; }
+   int32_t getGRAFreqThresholdAtWarm()    { return _graFreqThresholdAtWarm; }
    int32_t getNumLimitedGRARegsWithheld();
 
    int32_t getProfilingCompNodecountThreshold()  { return _profilingCompNodecountThreshold; }
@@ -2481,6 +2483,7 @@ class OMR_EXTENSIBLE Options
 
    int32_t                     _maxLimitedGRACandidates;
    int32_t                     _maxLimitedGRARegs;
+   int32_t                     _graFreqThresholdAtWarm;
 
    int32_t                     _enableGPU;