jdk/src/hotspot/share/compiler/compilerDefinitions.inline.hpp

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#ifndef SHARE_COMPILER_COMPILERDEFINITIONS_INLINE_HPP
#define SHARE_COMPILER_COMPILERDEFINITIONS_INLINE_HPP

#include "compiler/compilerDefinitions.hpp"

#include "compiler/compiler_globals.hpp"
#include "runtime/arguments.hpp"
#include "runtime/globals.hpp"

inline bool CompilerConfig::is_interpreter_only() {
  return Arguments::is_interpreter_only() || TieredStopAtLevel == CompLevel_none;
}

inline bool CompilerConfig::is_jvmci_compiler()    { return JVMCI_ONLY(has_jvmci() && UseJVMCICompiler) NOT_JVMCI(false); }
inline bool CompilerConfig::is_jvmci()             { return JVMCI_ONLY(has_jvmci() && EnableJVMCI     ) NOT_JVMCI(false); }

// is_*_only() functions describe situations in which the JVM is in one way or another
// forced to use a particular compiler or their combination. The constraint functions
// deliberately ignore the fact that there may also be methods installed
// through JVMCI (where the JVMCI compiler was invoked not through the broker). Be sure
// to check for those (using is_jvmci()) in situations where it matters.
//

// Is the JVM in a configuration that permits only c1-compiled methods (level 1,2,3)?
inline bool CompilerConfig::is_c1_only() {
  if (!is_interpreter_only() && has_c1()) {
    const bool c1_only = !has_c2() && !is_jvmci_compiler();
    const bool tiered_degraded_to_c1_only = TieredCompilation && TieredStopAtLevel >= CompLevel_simple && TieredStopAtLevel < CompLevel_full_optimization;
    const bool c1_only_compilation_mode = CompilationModeFlag::quick_only();
    return c1_only || tiered_degraded_to_c1_only || c1_only_compilation_mode;
  }
  return false;
}

inline bool CompilerConfig::is_c1_or_interpreter_only_no_jvmci() {
  assert(!is_jvmci_compiler() || is_jvmci(), "JVMCI compiler implies enabled JVMCI");
  return !is_jvmci() && (is_interpreter_only() || is_c1_only());
}

inline bool CompilerConfig::is_c1_only_no_jvmci() {
  return is_c1_only() && !is_jvmci();
}

// Is the JVM in a configuration that permits only c1-compiled methods at level 1?
inline bool CompilerConfig::is_c1_simple_only() {
  if (is_c1_only()) {
    const bool tiered_degraded_to_level_1 = TieredCompilation && TieredStopAtLevel == CompLevel_simple;
    const bool c1_only_compilation_mode = CompilationModeFlag::quick_only();
    const bool tiered_off = !TieredCompilation;
    return tiered_degraded_to_level_1 || c1_only_compilation_mode || tiered_off;
  }
  return false;
}

inline bool CompilerConfig::is_c2_enabled() {
  return has_c2() && !is_interpreter_only() && !is_c1_only() && !is_jvmci_compiler();
}

inline bool CompilerConfig::is_jvmci_compiler_enabled() {
  return is_jvmci_compiler() && !is_interpreter_only() && !is_c1_only();
}
// Is the JVM in a configuration that permits only c2-compiled methods?
inline bool CompilerConfig::is_c2_only() {
  if (is_c2_enabled()) {
    const bool c2_only = !has_c1();
    // There is no JVMCI compiler to replace C2 in the broker, and the user (or ergonomics)
    // is forcing C1 off.
    const bool c2_only_compilation_mode = CompilationModeFlag::high_only();
    const bool tiered_off = !TieredCompilation;
    return c2_only || c2_only_compilation_mode || tiered_off;
  }
  return false;
}

// Is the JVM in a configuration that permits only jvmci-compiled methods?
inline bool CompilerConfig::is_jvmci_compiler_only() {
  if (is_jvmci_compiler_enabled()) {
    const bool jvmci_compiler_only = !has_c1();
    // JVMCI compiler replaced C2 and the user (or ergonomics) is forcing C1 off.
    const bool jvmci_only_compilation_mode = CompilationModeFlag::high_only();
    const bool tiered_off = !TieredCompilation;
    return jvmci_compiler_only || jvmci_only_compilation_mode || tiered_off;
  }
  return false;
}

inline bool CompilerConfig::is_c2_or_jvmci_compiler_only() {
  return is_c2_only() || is_jvmci_compiler_only();
}

// Tiered is basically C1 & (C2 | JVMCI) minus all the odd cases with restrictions.
inline bool CompilerConfig::is_tiered() {
  assert(!is_c1_simple_only() || is_c1_only(), "c1 simple mode must imply c1-only mode");
  return has_tiered() && !is_interpreter_only() && !is_c1_only() && !is_c2_or_jvmci_compiler_only();
}

inline bool CompilerConfig::is_c1_enabled() {
  return has_c1() && !is_interpreter_only() && !is_c2_or_jvmci_compiler_only();
}

inline bool CompilerConfig::is_c1_profiling() {
  const bool c1_only_profiling = is_c1_only() && !is_c1_simple_only();
  const bool tiered = is_tiered();
  return c1_only_profiling || tiered;
}

inline bool CompilerConfig::is_c2_or_jvmci_compiler_enabled() {
  return is_c2_enabled() || is_jvmci_compiler_enabled();
}

// Return type of most optimizing compiler which is used
inline CompilerType CompilerConfig::compiler_type() {
  CompilerType compiler_type = CompilerType::compiler_none; // Interpreter only
  if (CompilerConfig::is_c2_enabled()) {
    compiler_type = CompilerType::compiler_c2;
  } else if (CompilerConfig::is_jvmci_compiler_enabled()) {
    compiler_type = CompilerType::compiler_jvmci;
  } else if (CompilerConfig::is_c1_enabled()) {
    compiler_type = CompilerType::compiler_c1;
  }
  return compiler_type;
}

#endif // SHARE_COMPILER_COMPILERDEFINITIONS_INLINE_HPP