gem5/base/hybrid_pred.hh
Steve Reinhardt 25693e9e69 Make include paths explicit and update makefile accordingly.
arch/alpha/alpha_memory.cc:
arch/alpha/alpha_memory.hh:
arch/alpha/arguments.cc:
arch/alpha/arguments.hh:
arch/alpha/ev5.cc:
arch/alpha/ev5.hh:
arch/alpha/fake_syscall.cc:
arch/alpha/faults.cc:
arch/alpha/isa_desc:
arch/alpha/isa_traits.hh:
arch/alpha/osfpal.cc:
arch/alpha/vtophys.cc:
arch/alpha/vtophys.hh:
base/circlebuf.cc:
base/compression/lzss_compression.cc:
base/compression/lzss_compression.hh:
base/cprintf.cc:
base/cprintf.hh:
base/fast_alloc.cc:
base/fifo_buffer.cc:
base/fifo_buffer.hh:
base/hashmap.hh:
base/hostinfo.cc:
base/hostinfo.hh:
base/hybrid_pred.cc:
base/hybrid_pred.hh:
base/inet.cc:
base/inet.hh:
base/inifile.cc:
base/inifile.hh:
base/intmath.cc:
base/loader/aout_object.cc:
base/loader/aout_object.hh:
base/loader/ecoff_object.cc:
base/loader/ecoff_object.hh:
base/loader/elf_object.cc:
base/loader/elf_object.hh:
base/loader/exec_aout.h:
base/loader/exec_ecoff.h:
base/loader/object_file.cc:
base/loader/object_file.hh:
base/loader/symtab.cc:
base/loader/symtab.hh:
base/misc.cc:
base/misc.hh:
base/pollevent.cc:
base/pollevent.hh:
base/random.cc:
base/random.hh:
base/range.hh:
base/remote_gdb.cc:
base/remote_gdb.hh:
base/res_list.hh:
base/sat_counter.cc:
base/sat_counter.hh:
base/sched_list.hh:
base/socket.cc:
base/statistics.cc:
base/statistics.hh:
base/str.cc:
base/trace.cc:
base/trace.hh:
cpu/base_cpu.cc:
cpu/base_cpu.hh:
cpu/exec_context.cc:
cpu/exec_context.hh:
cpu/exetrace.cc:
cpu/exetrace.hh:
cpu/intr_control.cc:
cpu/intr_control.hh:
cpu/memtest/memtest.cc:
cpu/memtest/memtest.hh:
cpu/pc_event.cc:
cpu/pc_event.hh:
cpu/simple_cpu/simple_cpu.cc:
cpu/simple_cpu/simple_cpu.hh:
cpu/static_inst.cc:
cpu/static_inst.hh:
dev/alpha_console.cc:
dev/alpha_console.hh:
dev/console.cc:
dev/console.hh:
dev/disk_image.cc:
dev/disk_image.hh:
dev/etherbus.cc:
dev/etherbus.hh:
dev/etherdump.cc:
dev/etherdump.hh:
dev/etherint.cc:
dev/etherint.hh:
dev/etherlink.cc:
dev/etherlink.hh:
dev/etherpkt.hh:
dev/ethertap.cc:
dev/ethertap.hh:
dev/simple_disk.cc:
dev/simple_disk.hh:
kern/tru64/tru64_syscalls.cc:
kern/tru64/tru64_syscalls.hh:
sim/debug.cc:
sim/eventq.cc:
sim/eventq.hh:
sim/main.cc:
sim/param.cc:
sim/param.hh:
sim/prog.cc:
sim/prog.hh:
sim/serialize.cc:
sim/serialize.hh:
sim/sim_events.cc:
sim/sim_events.hh:
sim/sim_object.cc:
sim/sim_object.hh:
sim/sim_time.cc:
sim/system.cc:
sim/system.hh:
sim/universe.cc:
test/circletest.cc:
test/cprintftest.cc:
test/initest.cc:
test/nmtest.cc:
test/offtest.cc:
test/paramtest.cc:
test/rangetest.cc:
test/stattest.cc:
test/strnumtest.cc:
test/symtest.cc:
test/tokentest.cc:
test/tracetest.cc:
util/tap/tap.cc:
    Make include paths explicit.

--HG--
extra : convert_revision : 941cbdc591fd4d3d1d9f095cd58fc23dd2d73840
2003-10-10 11:09:00 -07:00

203 lines
5.7 KiB
C++

/*
* Copyright (c) 2003 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//==========================================================================
//
// This predictor takes the AND of a "local" and a "global" predictor
// in order to determine its prediction.
//
//
//
//
#ifndef __HYBRID_PRED_HH__
#define __HYBRID_PRED_HH__
#include <string>
#include "base/sat_counter.hh"
#include "base/statistics.hh"
#include "sim/sim_stats.hh"
class HybridPredictor : public GenericPredictor
{
private:
std::string pred_name;
std::string one_name;
std::string zero_name;
bool reg_individual_stats;
SaturatingCounterPred *local;
SaturatingCounterPred *global;
unsigned long max_index;
//
// Stats
//
Statistics::Scalar<> pred_one; //num_one_preds
Statistics::Scalar<> pred_zero; //num_zero_preds
Statistics::Scalar<> correct_pred_one; //num_one_correct
Statistics::Scalar<> correct_pred_zero; //num_zero_correct
Statistics::Scalar<> record_one; //num_one_updates
Statistics::Scalar<> record_zero; //num_zero_updates
Statistics::Formula total_preds;
Statistics::Formula frac_preds_zero;
Statistics::Formula frac_preds_one;
Statistics::Formula total_correct;
Statistics::Formula total_accuracy;
Statistics::Formula zero_accuracy;
Statistics::Formula one_accuracy;
Statistics::Formula zero_coverage;
Statistics::Formula one_coverage;
public:
HybridPredictor(const char *_p_name, const char *_z_name,
const char *_o_name,
unsigned _index_bits, unsigned _counter_bits,
unsigned _zero_change, unsigned _one_change,
unsigned _thresh,
unsigned _global_bits, unsigned _global_thresh,
bool _reg_individual_stats = false);
void clear() {
global->clear();
local->clear();
}
unsigned peek(unsigned long _index) {
unsigned l = local->peek(_index);
unsigned g = global->peek(_index);
if (l && g)
return 1;
return 0;
}
unsigned value(unsigned long _index) {
unsigned l = local->peek(_index);
unsigned g = global->peek(_index);
l = l & 0xFFFF;
g = g & 0xFFFF;
return (l << 16) | g;
}
unsigned predict(unsigned long _index) {
unsigned l = local->predict(_index);
unsigned g = global->predict(_index);
if (l && g) {
++pred_one;
return 1;
}
++pred_zero;
return 0;
}
//
// This version need only be used if local/global statistics
// will be maintained
//
unsigned predict(unsigned long _index, unsigned &_pdata) {
unsigned l = local->predict(_index);
unsigned g = global->predict(_index);
//
// bit 0 => local predictor result
// bit 1 => global predictor result
//
_pdata = 0;
if (l)
_pdata |= 1;
if (g)
_pdata |= 2;
if (l && g) {
++pred_one;
return 1;
}
++pred_zero;
return 0;
}
void record(unsigned long _index, unsigned _val, unsigned _predicted) {
if (_val) {
local->record(_index, _val, 0);
global->record(_index, _val, 0);
++record_one;
if (_val == _predicted) {
++correct_pred_one;
}
} else {
local->record(_index, _val, 0);
global->record(_index, _val, 0);
++record_zero;
if (_val == _predicted)
++correct_pred_zero;
}
}
void record(unsigned long _index, unsigned _val, unsigned _predicted,
unsigned _pdata)
{
local->record(_index, _val, (_pdata & 1));
global->record(_index, _val, ((_pdata & 2) ? 1 : 0));
if (_val) {
++record_one;
if (_val == _predicted)
++correct_pred_one;
} else {
++record_zero;
if (_val == _predicted)
++correct_pred_zero;
}
}
void regStats();
void regFormulas();
};
#endif // _HYBRID_PRED_HH__