hotspot/src/share/vm/runtime/commandLineFlagConstraintsCompiler.cpp
author thartmann
Wed, 05 Jul 2017 09:06:59 +0200
changeset 45804 41b19cb98a96
parent 42063 dca9294d9f59
child 45806 36707109c109
permissions -rw-r--r--
8183103: Post loop vectorization produces incorrect results Summary: Disable AVX=3 and PostLoopMultiversioning by default and make them experimental in JDK 9. Reviewed-by: kvn
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/*
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 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "oops/metadata.hpp"
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#include "runtime/os.hpp"
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#include "code/relocInfo.hpp"
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#include "interpreter/invocationCounter.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/commandLineFlagConstraintsCompiler.hpp"
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#include "runtime/commandLineFlagRangeList.hpp"
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#include "runtime/globals.hpp"
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#include "utilities/defaultStream.hpp"
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Flag::Error AliasLevelConstraintFunc(intx value, bool verbose) {
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  if ((value <= 1) && (Arguments::mode() == Arguments::_comp || Arguments::mode() == Arguments::_mixed)) {
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    CommandLineError::print(verbose,
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                            "AliasLevel (" INTX_FORMAT ") is not "
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                            "compatible with -Xcomp or -Xmixed\n",
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                            value);
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    return Flag::VIOLATES_CONSTRAINT;
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  } else {
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    return Flag::SUCCESS;
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  }
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}
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/**
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 * Validate the minimum number of compiler threads needed to run the
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 * JVM. The following configurations are possible.
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 *
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 * 1) The JVM is build using an interpreter only. As a result, the minimum number of
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 *    compiler threads is 0.
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 * 2) The JVM is build using the compiler(s) and tiered compilation is disabled. As
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 *    a result, either C1 or C2 is used, so the minimum number of compiler threads is 1.
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 * 3) The JVM is build using the compiler(s) and tiered compilation is enabled. However,
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 *    the option "TieredStopAtLevel < CompLevel_full_optimization". As a result, only
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 *    C1 can be used, so the minimum number of compiler threads is 1.
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 * 4) The JVM is build using the compilers and tiered compilation is enabled. The option
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 *    'TieredStopAtLevel = CompLevel_full_optimization' (the default value). As a result,
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 *    the minimum number of compiler threads is 2.
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 */
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Flag::Error CICompilerCountConstraintFunc(intx value, bool verbose) {
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  int min_number_of_compiler_threads = 0;
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#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) && !INCLUDE_JVMCI
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  // case 1
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#else
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  if (!TieredCompilation || (TieredStopAtLevel < CompLevel_full_optimization)) {
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    min_number_of_compiler_threads = 1; // case 2 or case 3
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  } else {
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    min_number_of_compiler_threads = 2;   // case 4 (tiered)
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  }
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#endif
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  // The default CICompilerCount's value is CI_COMPILER_COUNT.
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  // With a client VM, -XX:+TieredCompilation causes TieredCompilation
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  // to be true here (the option is validated later) and
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  // min_number_of_compiler_threads to exceed CI_COMPILER_COUNT.
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  min_number_of_compiler_threads = MIN2(min_number_of_compiler_threads, CI_COMPILER_COUNT);
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  if (value < (intx)min_number_of_compiler_threads) {
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    CommandLineError::print(verbose,
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                            "CICompilerCount (" INTX_FORMAT ") must be "
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                            "at least %d \n",
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                            value, min_number_of_compiler_threads);
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    return Flag::VIOLATES_CONSTRAINT;
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  } else {
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    return Flag::SUCCESS;
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  }
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}
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Flag::Error AllocatePrefetchDistanceConstraintFunc(intx value, bool verbose) {
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  if (value < 0 || value > 512) {
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    CommandLineError::print(verbose,
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                            "AllocatePrefetchDistance (" INTX_FORMAT ") must be "
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                            "between 0 and " INTX_FORMAT "\n",
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                            AllocatePrefetchDistance, 512);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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  return Flag::SUCCESS;
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}
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Flag::Error AllocatePrefetchStepSizeConstraintFunc(intx value, bool verbose) {
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  if (AllocatePrefetchStyle == 3) {
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    if (value % wordSize != 0) {
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      CommandLineError::print(verbose,
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                              "AllocatePrefetchStepSize (" INTX_FORMAT ") must be multiple of %d\n",
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                              value, wordSize);
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      return Flag::VIOLATES_CONSTRAINT;
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    }
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  }
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  return Flag::SUCCESS;
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}
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Flag::Error AllocatePrefetchInstrConstraintFunc(intx value, bool verbose) {
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  intx max_value = max_intx;
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#if defined(SPARC)
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  max_value = 1;
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#elif defined(X86)
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  max_value = 3;
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#endif
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  if (value < 0 || value > max_value) {
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    CommandLineError::print(verbose,
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                            "AllocatePrefetchInstr (" INTX_FORMAT ") must be "
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                            "between 0 and " INTX_FORMAT "\n", value, max_value);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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  return Flag::SUCCESS;
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}
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Flag::Error CompileThresholdConstraintFunc(intx value, bool verbose) {
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  if (value < 0 || value > INT_MAX >> InvocationCounter::count_shift) {
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    CommandLineError::print(verbose,
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                            "CompileThreshold (" INTX_FORMAT ") "
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                            "must be between 0 and %d\n",
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                            value,
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                            INT_MAX >> InvocationCounter::count_shift);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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  return Flag::SUCCESS;
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}
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Flag::Error OnStackReplacePercentageConstraintFunc(intx value, bool verbose) {
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  int backward_branch_limit;
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  if (ProfileInterpreter) {
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    if (OnStackReplacePercentage < InterpreterProfilePercentage) {
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      CommandLineError::print(verbose,
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                              "OnStackReplacePercentage (" INTX_FORMAT ") must be "
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                              "larger than InterpreterProfilePercentage (" INTX_FORMAT ")\n",
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                              OnStackReplacePercentage, InterpreterProfilePercentage);
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      return Flag::VIOLATES_CONSTRAINT;
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    }
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    backward_branch_limit = ((CompileThreshold * (OnStackReplacePercentage - InterpreterProfilePercentage)) / 100)
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                            << InvocationCounter::count_shift;
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    if (backward_branch_limit < 0) {
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      CommandLineError::print(verbose,
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                              "CompileThreshold * (InterpreterProfilePercentage - OnStackReplacePercentage) / 100 = "
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                              INTX_FORMAT " "
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                              "must be between 0 and " INTX_FORMAT ", try changing "
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                              "CompileThreshold, InterpreterProfilePercentage, and/or OnStackReplacePercentage\n",
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                              (CompileThreshold * (OnStackReplacePercentage - InterpreterProfilePercentage)) / 100,
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                              INT_MAX >> InvocationCounter::count_shift);
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      return Flag::VIOLATES_CONSTRAINT;
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    }
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  } else {
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    if (OnStackReplacePercentage < 0 ) {
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      CommandLineError::print(verbose,
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                              "OnStackReplacePercentage (" INTX_FORMAT ") must be "
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                              "non-negative\n", OnStackReplacePercentage);
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      return Flag::VIOLATES_CONSTRAINT;
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    }
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    backward_branch_limit = ((CompileThreshold * OnStackReplacePercentage) / 100)
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                            << InvocationCounter::count_shift;
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    if (backward_branch_limit < 0) {
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      CommandLineError::print(verbose,
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                              "CompileThreshold * OnStackReplacePercentage / 100 = " INTX_FORMAT " "
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                              "must be between 0 and " INTX_FORMAT ", try changing "
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                              "CompileThreshold and/or OnStackReplacePercentage\n",
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                              (CompileThreshold * OnStackReplacePercentage) / 100,
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                              INT_MAX >> InvocationCounter::count_shift);
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      return Flag::VIOLATES_CONSTRAINT;
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    }
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  }
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  return Flag::SUCCESS;
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}
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Flag::Error CodeCacheSegmentSizeConstraintFunc(uintx value, bool verbose) {
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  if (CodeCacheSegmentSize < (uintx)CodeEntryAlignment) {
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    CommandLineError::print(verbose,
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                            "CodeCacheSegmentSize  (" UINTX_FORMAT ") must be "
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                            "larger than or equal to CodeEntryAlignment (" INTX_FORMAT ") "
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                            "to align entry points\n",
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                            CodeCacheSegmentSize, CodeEntryAlignment);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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  if (CodeCacheSegmentSize < sizeof(jdouble)) {
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    CommandLineError::print(verbose,
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                            "CodeCacheSegmentSize  (" UINTX_FORMAT ") must be "
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                            "at least " SIZE_FORMAT " to align constants\n",
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                            CodeCacheSegmentSize, sizeof(jdouble));
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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#ifdef COMPILER2
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  if (CodeCacheSegmentSize < (uintx)OptoLoopAlignment) {
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    CommandLineError::print(verbose,
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                            "CodeCacheSegmentSize  (" UINTX_FORMAT ") must be "
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                            "larger than or equal to OptoLoopAlignment (" INTX_FORMAT ") "
33163
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                            "to align inner loops\n",
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                            CodeCacheSegmentSize, OptoLoopAlignment);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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#endif
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  return Flag::SUCCESS;
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}
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Flag::Error CompilerThreadPriorityConstraintFunc(intx value, bool verbose) {
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#ifdef SOLARIS
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  if ((value < MinimumPriority || value > MaximumPriority) &&
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      (value != -1) && (value != -FXCriticalPriority)) {
33163
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    CommandLineError::print(verbose,
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                            "CompileThreadPriority (" INTX_FORMAT ") must be "
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                            "between %d and %d inclusively or -1 (means no change) "
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                            "or %d (special value for critical thread class/priority)\n",
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                            value, MinimumPriority, MaximumPriority, -FXCriticalPriority);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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#endif
33163
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  return Flag::SUCCESS;
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}
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Flag::Error CodeEntryAlignmentConstraintFunc(intx value, bool verbose) {
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#ifdef SPARC
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  if (CodeEntryAlignment % relocInfo::addr_unit() != 0) {
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    CommandLineError::print(verbose,
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                            "CodeEntryAlignment (" INTX_FORMAT ") must be "
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                            "multiple of NOP size\n", CodeEntryAlignment);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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#endif
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  if (!is_power_of_2(value)) {
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    CommandLineError::print(verbose,
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                            "CodeEntryAlignment (" INTX_FORMAT ") must be "
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                            "a power of two\n", CodeEntryAlignment);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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   258
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  if (CodeEntryAlignment < 16) {
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      CommandLineError::print(verbose,
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                              "CodeEntryAlignment (" INTX_FORMAT ") must be "
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                              "greater than or equal to %d\n",
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                              CodeEntryAlignment, 16);
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      return Flag::VIOLATES_CONSTRAINT;
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   265
  }
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  return Flag::SUCCESS;
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   268
}
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   269
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Flag::Error OptoLoopAlignmentConstraintFunc(intx value, bool verbose) {
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   271
  if (!is_power_of_2(value)) {
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    CommandLineError::print(verbose,
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                            "OptoLoopAlignment (" INTX_FORMAT ") "
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                            "must be a power of two\n",
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   275
                            value);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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   278
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   279
#ifdef SPARC
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   280
  if (OptoLoopAlignment % relocInfo::addr_unit() != 0) {
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    CommandLineError::print(verbose,
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                            "OptoLoopAlignment (" INTX_FORMAT ") must be "
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   283
                            "multiple of NOP size\n");
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   284
    return Flag::VIOLATES_CONSTRAINT;
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   285
  }
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   286
#endif
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   287
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  return Flag::SUCCESS;
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   289
}
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   290
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   291
Flag::Error ArraycopyDstPrefetchDistanceConstraintFunc(uintx value, bool verbose) {
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   292
  if (value != 0) {
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   293
    CommandLineError::print(verbose,
33744
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                            "ArraycopyDstPrefetchDistance (" UINTX_FORMAT ") must be 0\n",
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   295
                            value);
33163
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    return Flag::VIOLATES_CONSTRAINT;
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   297
  }
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   298
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   299
  return Flag::SUCCESS;
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   300
}
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   301
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   302
Flag::Error ArraycopySrcPrefetchDistanceConstraintFunc(uintx value, bool verbose) {
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  if (value != 0) {
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   304
    CommandLineError::print(verbose,
33744
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   305
                            "ArraycopySrcPrefetchDistance (" UINTX_FORMAT ") must be 0\n",
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   306
                            value);
33163
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    return Flag::VIOLATES_CONSTRAINT;
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   308
  }
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   309
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   310
  return Flag::SUCCESS;
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   311
}
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   312
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   313
Flag::Error TypeProfileLevelConstraintFunc(uintx value, bool verbose) {
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   314
  for (int i = 0; i < 3; i++) {
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   315
    if (value % 10 > 2) {
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   316
      CommandLineError::print(verbose,
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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   317
                              "Invalid value (" UINTX_FORMAT ") "
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   318
                              "in TypeProfileLevel at position %d\n", value, i);
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   319
      return Flag::VIOLATES_CONSTRAINT;
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   320
    }
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   321
    value = value / 10;
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   322
  }
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   323
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   324
  return Flag::SUCCESS;
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   325
}
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diff changeset
   326
36554
a7eb9ee4680c 8146801: Allocating short arrays of non-constant size is slow
shade
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   327
Flag::Error InitArrayShortSizeConstraintFunc(intx value, bool verbose) {
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   328
  if (value % BytesPerLong != 0) {
a7eb9ee4680c 8146801: Allocating short arrays of non-constant size is slow
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diff changeset
   329
    return Flag::VIOLATES_CONSTRAINT;
a7eb9ee4680c 8146801: Allocating short arrays of non-constant size is slow
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diff changeset
   330
  } else {
a7eb9ee4680c 8146801: Allocating short arrays of non-constant size is slow
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   331
    return Flag::SUCCESS;
a7eb9ee4680c 8146801: Allocating short arrays of non-constant size is slow
shade
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diff changeset
   332
  }
a7eb9ee4680c 8146801: Allocating short arrays of non-constant size is slow
shade
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diff changeset
   333
}
a7eb9ee4680c 8146801: Allocating short arrays of non-constant size is slow
shade
parents: 35751
diff changeset
   334
45804
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
thartmann
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   335
Flag::Error UseAVXConstraintFunc(intx value, bool verbose) {
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thartmann
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   336
  if (value > 2 && !UnlockExperimentalVMOptions) {
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
thartmann
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diff changeset
   337
    CommandLineError::print(verbose,
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
thartmann
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diff changeset
   338
                            "UseAVX (" UINTX_FORMAT ") is experimental and must be "
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
thartmann
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diff changeset
   339
                            "enabled via -XX:+UnlockExperimentalVMOptions \n", value);
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
thartmann
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diff changeset
   340
    return Flag::VIOLATES_CONSTRAINT;
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thartmann
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diff changeset
   341
  } else {
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
thartmann
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diff changeset
   342
    return Flag::SUCCESS;
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
thartmann
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diff changeset
   343
  }
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
thartmann
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diff changeset
   344
}
41b19cb98a96 8183103: Post loop vectorization produces incorrect results
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   345
33163
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   346
#ifdef COMPILER2
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   347
Flag::Error InteriorEntryAlignmentConstraintFunc(intx value, bool verbose) {
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   348
  if (InteriorEntryAlignment > CodeEntryAlignment) {
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diff changeset
   349
    CommandLineError::print(verbose,
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   350
                           "InteriorEntryAlignment (" INTX_FORMAT ") must be "
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diff changeset
   351
                           "less than or equal to CodeEntryAlignment (" INTX_FORMAT ")\n",
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diff changeset
   352
                           InteriorEntryAlignment, CodeEntryAlignment);
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   353
    return Flag::VIOLATES_CONSTRAINT;
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   354
  }
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diff changeset
   355
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   356
#ifdef SPARC
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   357
  if (InteriorEntryAlignment % relocInfo::addr_unit() != 0) {
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
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diff changeset
   358
    CommandLineError::print(verbose,
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   359
                            "InteriorEntryAlignment (" INTX_FORMAT ") must be "
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   360
                            "multiple of NOP size\n");
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
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diff changeset
   361
    return Flag::VIOLATES_CONSTRAINT;
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   362
  }
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
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diff changeset
   363
#endif
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   364
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
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diff changeset
   365
  if (!is_power_of_2(value)) {
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   366
     CommandLineError::print(verbose,
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   367
                             "InteriorEntryAlignment (" INTX_FORMAT ") must be "
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
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diff changeset
   368
                             "a power of two\n", InteriorEntryAlignment);
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   369
     return Flag::VIOLATES_CONSTRAINT;
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diff changeset
   370
   }
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diff changeset
   371
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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   372
  int minimum_alignment = 16;
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   373
#if defined(SPARC) || (defined(X86) && !defined(AMD64))
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   374
  minimum_alignment = 4;
42063
dca9294d9f59 8166561: [s390] Adaptions needed for s390 port in C1 and C2.
goetz
parents: 38220
diff changeset
   375
#elif defined(S390)
dca9294d9f59 8166561: [s390] Adaptions needed for s390 port in C1 and C2.
goetz
parents: 38220
diff changeset
   376
  minimum_alignment = 2;
33163
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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diff changeset
   377
#endif
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
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diff changeset
   378
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
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diff changeset
   379
  if (InteriorEntryAlignment < minimum_alignment) {
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   380
    CommandLineError::print(verbose,
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
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diff changeset
   381
                            "InteriorEntryAlignment (" INTX_FORMAT ") must be "
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   382
                            "greater than or equal to %d\n",
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   383
                            InteriorEntryAlignment, minimum_alignment);
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   384
    return Flag::VIOLATES_CONSTRAINT;
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
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parents: 33160
diff changeset
   385
  }
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   386
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   387
  return Flag::SUCCESS;
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   388
}
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   389
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   390
Flag::Error NodeLimitFudgeFactorConstraintFunc(intx value, bool verbose) {
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   391
  if (value < MaxNodeLimit * 2 / 100 || value > MaxNodeLimit * 40 / 100) {
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   392
    CommandLineError::print(verbose,
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   393
                            "NodeLimitFudgeFactor must be between 2%% and 40%% "
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   394
                            "of MaxNodeLimit (" INTX_FORMAT ")\n",
9e128b399e48 8078554: Compiler: implement ranges (optionally constraints) for those flags that have them missing
zmajo
parents: 33160
diff changeset
   395
                            MaxNodeLimit);
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    return Flag::VIOLATES_CONSTRAINT;
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  }
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  return Flag::SUCCESS;
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}
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   401
#endif // COMPILER2