/*
 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#include "precompiled.hpp"
#include "code/nmethod.hpp"
#include "compiler/compileBroker.hpp"
#include "opto/compile.hpp"
#include "opto/node.hpp"
#include "opto/phase.hpp"

#ifndef PRODUCT
int Phase::_total_bytes_compiled = 0;

elapsedTimer Phase::_t_totalCompilation;
elapsedTimer Phase::_t_methodCompilation;
elapsedTimer Phase::_t_stubCompilation;
#endif

// The next timers used for LogCompilation
elapsedTimer Phase::_t_parser;
elapsedTimer Phase::_t_optimizer;
elapsedTimer   Phase::_t_escapeAnalysis;
elapsedTimer     Phase::_t_buildConnectionGraph;
elapsedTimer   Phase::_t_idealLoop;
elapsedTimer   Phase::_t_ccp;
elapsedTimer Phase::_t_matcher;
elapsedTimer Phase::_t_registerAllocation;
elapsedTimer Phase::_t_output;

#ifndef PRODUCT
elapsedTimer Phase::_t_graphReshaping;
elapsedTimer Phase::_t_scheduler;
elapsedTimer Phase::_t_blockOrdering;
elapsedTimer Phase::_t_macroEliminate;
elapsedTimer Phase::_t_macroExpand;
elapsedTimer Phase::_t_peephole;
elapsedTimer Phase::_t_codeGeneration;
elapsedTimer Phase::_t_registerMethod;
elapsedTimer Phase::_t_temporaryTimer1;
elapsedTimer Phase::_t_temporaryTimer2;
elapsedTimer Phase::_t_idealLoopVerify;

// Subtimers for _t_optimizer
elapsedTimer   Phase::_t_iterGVN;
elapsedTimer   Phase::_t_iterGVN2;

// Subtimers for _t_registerAllocation
elapsedTimer   Phase::_t_ctorChaitin;
elapsedTimer   Phase::_t_buildIFGphysical;
elapsedTimer   Phase::_t_computeLive;
elapsedTimer   Phase::_t_regAllocSplit;
elapsedTimer   Phase::_t_postAllocCopyRemoval;
elapsedTimer   Phase::_t_fixupSpills;

// Subtimers for _t_output
elapsedTimer   Phase::_t_instrSched;
elapsedTimer   Phase::_t_buildOopMaps;
#endif

//------------------------------Phase------------------------------------------
Phase::Phase( PhaseNumber pnum ) : _pnum(pnum), C( pnum == Compiler ? NULL : Compile::current()) {
  // Poll for requests from shutdown mechanism to quiesce compiler (4448539, 4448544).
  // This is an effective place to poll, since the compiler is full of phases.
  // In particular, every inlining site uses a recursively created Parse phase.
  CompileBroker::maybe_block();
}

#ifndef PRODUCT
static const double minimum_reported_time             = 0.0001; // seconds
static const double expected_method_compile_coverage  = 0.97;   // %
static const double minimum_meaningful_method_compile = 2.00;   // seconds

void Phase::print_timers() {
  tty->print_cr ("Accumulated compiler times:");
  tty->print_cr ("---------------------------");
  tty->print_cr ("  Total compilation: %3.3f sec.", Phase::_t_totalCompilation.seconds());
  tty->print    ("    method compilation   : %3.3f sec", Phase::_t_methodCompilation.seconds());
  tty->print    ("/%d bytes",_total_bytes_compiled);
  tty->print_cr (" (%3.0f bytes per sec) ", Phase::_total_bytes_compiled / Phase::_t_methodCompilation.seconds());
  tty->print_cr ("    stub compilation     : %3.3f sec.", Phase::_t_stubCompilation.seconds());
  tty->print_cr ("  Phases:");
  tty->print_cr ("    parse          : %3.3f sec", Phase::_t_parser.seconds());
  tty->print_cr ("    optimizer      : %3.3f sec", Phase::_t_optimizer.seconds());
  if( Verbose || WizardMode ) {
    if (DoEscapeAnalysis) {
      // EA is part of Optimizer.
      tty->print_cr ("      escape analysis: %3.3f sec", Phase::_t_escapeAnalysis.seconds());
      tty->print_cr ("        build connection graph: %3.3f sec", Phase::_t_buildConnectionGraph.seconds());
      tty->print_cr ("      macroEliminate : %3.3f sec", Phase::_t_macroEliminate.seconds());
    }
    tty->print_cr ("      iterGVN        : %3.3f sec", Phase::_t_iterGVN.seconds());
    tty->print_cr ("      idealLoop      : %3.3f sec", Phase::_t_idealLoop.seconds());
    tty->print_cr ("      idealLoopVerify: %3.3f sec", Phase::_t_idealLoopVerify.seconds());
    tty->print_cr ("      ccp            : %3.3f sec", Phase::_t_ccp.seconds());
    tty->print_cr ("      iterGVN2       : %3.3f sec", Phase::_t_iterGVN2.seconds());
    tty->print_cr ("      macroExpand    : %3.3f sec", Phase::_t_macroExpand.seconds());
    tty->print_cr ("      graphReshape   : %3.3f sec", Phase::_t_graphReshaping.seconds());
    double optimizer_subtotal = Phase::_t_iterGVN.seconds() + Phase::_t_iterGVN2.seconds() +
      Phase::_t_escapeAnalysis.seconds() + Phase::_t_macroEliminate.seconds() +
      Phase::_t_idealLoop.seconds() + Phase::_t_ccp.seconds() +
      Phase::_t_macroExpand.seconds() + Phase::_t_graphReshaping.seconds();
    double percent_of_optimizer = ((optimizer_subtotal == 0.0) ? 0.0 : (optimizer_subtotal / Phase::_t_optimizer.seconds() * 100.0));
    tty->print_cr ("      subtotal       : %3.3f sec,  %3.2f %%", optimizer_subtotal, percent_of_optimizer);
  }
  tty->print_cr ("    matcher        : %3.3f sec", Phase::_t_matcher.seconds());
  tty->print_cr ("    scheduler      : %3.3f sec", Phase::_t_scheduler.seconds());
  tty->print_cr ("    regalloc       : %3.3f sec", Phase::_t_registerAllocation.seconds());
  if( Verbose || WizardMode ) {
    tty->print_cr ("      ctorChaitin    : %3.3f sec", Phase::_t_ctorChaitin.seconds());
    tty->print_cr ("      buildIFG       : %3.3f sec", Phase::_t_buildIFGphysical.seconds());
    tty->print_cr ("      computeLive    : %3.3f sec", Phase::_t_computeLive.seconds());
    tty->print_cr ("      regAllocSplit  : %3.3f sec", Phase::_t_regAllocSplit.seconds());
    tty->print_cr ("      postAllocCopyRemoval: %3.3f sec", Phase::_t_postAllocCopyRemoval.seconds());
    tty->print_cr ("      fixupSpills    : %3.3f sec", Phase::_t_fixupSpills.seconds());
    double regalloc_subtotal = Phase::_t_ctorChaitin.seconds() +
      Phase::_t_buildIFGphysical.seconds() + Phase::_t_computeLive.seconds() +
      Phase::_t_regAllocSplit.seconds()    + Phase::_t_fixupSpills.seconds() +
      Phase::_t_postAllocCopyRemoval.seconds();
    double percent_of_regalloc = ((regalloc_subtotal == 0.0) ? 0.0 : (regalloc_subtotal / Phase::_t_registerAllocation.seconds() * 100.0));
    tty->print_cr ("      subtotal       : %3.3f sec,  %3.2f %%", regalloc_subtotal, percent_of_regalloc);
  }
  tty->print_cr ("    blockOrdering  : %3.3f sec", Phase::_t_blockOrdering.seconds());
  tty->print_cr ("    peephole       : %3.3f sec", Phase::_t_peephole.seconds());
  tty->print_cr ("    codeGen        : %3.3f sec", Phase::_t_codeGeneration.seconds());
  tty->print_cr ("    install_code   : %3.3f sec", Phase::_t_registerMethod.seconds());
  tty->print_cr ("    -------------- : ----------");
  double phase_subtotal = Phase::_t_parser.seconds() +
    Phase::_t_optimizer.seconds() + Phase::_t_graphReshaping.seconds() +
    Phase::_t_matcher.seconds() + Phase::_t_scheduler.seconds() +
    Phase::_t_registerAllocation.seconds() + Phase::_t_blockOrdering.seconds() +
    Phase::_t_codeGeneration.seconds() + Phase::_t_registerMethod.seconds();
  double percent_of_method_compile = ((phase_subtotal == 0.0) ? 0.0 : phase_subtotal / Phase::_t_methodCompilation.seconds()) * 100.0;
  // counters inside Compile::CodeGen include time for adapters and stubs
  // so phase-total can be greater than 100%
  tty->print_cr ("    total          : %3.3f sec,  %3.2f %%", phase_subtotal, percent_of_method_compile);

  assert( percent_of_method_compile > expected_method_compile_coverage ||
          phase_subtotal < minimum_meaningful_method_compile,
          "Must account for method compilation");

  if( Phase::_t_temporaryTimer1.seconds() > minimum_reported_time ) {
    tty->cr();
    tty->print_cr ("    temporaryTimer1: %3.3f sec", Phase::_t_temporaryTimer1.seconds());
  }
  if( Phase::_t_temporaryTimer2.seconds() > minimum_reported_time ) {
    tty->cr();
    tty->print_cr ("    temporaryTimer2: %3.3f sec", Phase::_t_temporaryTimer2.seconds());
  }
  tty->print_cr ("    output         : %3.3f sec", Phase::_t_output.seconds());
  tty->print_cr ("      isched         : %3.3f sec", Phase::_t_instrSched.seconds());
  tty->print_cr ("      bldOopMaps     : %3.3f sec", Phase::_t_buildOopMaps.seconds());
}
#endif