mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-11 13:37:07 +00:00
9919114951
Summary: This patch eliminates some redundancy in iterating across Listeners for the Instruction and Stall HWEvents, by introducing a template onEvent routine. This change was suggested by @courbet in https://reviews.llvm.org/D48576. I hope that this patch addresses that suggestion appropriately. I do like this change better than what we had previously. Reviewers: andreadb, courbet, RKSimon Reviewed By: andreadb, courbet Subscribers: javed.absar, tschuett, gbedwell, llvm-commits, courbet Differential Revision: https://reviews.llvm.org/D48672 llvm-svn: 336916
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
//===--------------------- SchedulerStatistics.h ----------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
/// \file
|
|
///
|
|
/// This file defines class SchedulerStatistics. Class SchedulerStatistics is a
|
|
/// View that listens to instruction issue events in order to print general
|
|
/// statistics related to the hardware schedulers.
|
|
///
|
|
/// Example:
|
|
/// ========
|
|
///
|
|
/// Schedulers - number of cycles where we saw N instructions issued:
|
|
/// [# issued], [# cycles]
|
|
/// 0, 7 (5.4%)
|
|
/// 1, 4 (3.1%)
|
|
/// 2, 8 (6.2%)
|
|
///
|
|
/// Scheduler's queue usage:
|
|
/// JALU01, 0/20
|
|
/// JFPU01, 18/18
|
|
/// JLSAGU, 0/12
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_TOOLS_LLVM_MCA_SCHEDULERSTATISTICS_H
|
|
#define LLVM_TOOLS_LLVM_MCA_SCHEDULERSTATISTICS_H
|
|
|
|
#include "View.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/MC/MCSubtargetInfo.h"
|
|
#include <map>
|
|
|
|
namespace mca {
|
|
|
|
class SchedulerStatistics : public View {
|
|
const llvm::MCSchedModel &SM;
|
|
|
|
using Histogram = std::map<unsigned, unsigned>;
|
|
Histogram IssuedPerCycle;
|
|
|
|
unsigned NumIssued;
|
|
unsigned NumCycles;
|
|
|
|
// Tracks the usage of a scheduler's queue.
|
|
struct BufferUsage {
|
|
unsigned SlotsInUse;
|
|
unsigned MaxUsedSlots;
|
|
};
|
|
|
|
std::map<unsigned, BufferUsage> BufferedResources;
|
|
|
|
void updateHistograms() {
|
|
IssuedPerCycle[NumIssued]++;
|
|
NumIssued = 0;
|
|
}
|
|
|
|
void printSchedulerStatistics(llvm::raw_ostream &OS) const;
|
|
void printSchedulerUsage(llvm::raw_ostream &OS) const;
|
|
|
|
public:
|
|
SchedulerStatistics(const llvm::MCSubtargetInfo &STI)
|
|
: SM(STI.getSchedModel()), NumIssued(0), NumCycles(0) {}
|
|
|
|
void onEvent(const HWInstructionEvent &Event) override;
|
|
|
|
void onCycleBegin() override { NumCycles++; }
|
|
|
|
void onCycleEnd() override { updateHistograms(); }
|
|
|
|
// Increases the number of used scheduler queue slots of every buffered
|
|
// resource in the Buffers set.
|
|
void onReservedBuffers(llvm::ArrayRef<unsigned> Buffers) override;
|
|
|
|
// Decreases by one the number of used scheduler queue slots of every
|
|
// buffered resource in the Buffers set.
|
|
void onReleasedBuffers(llvm::ArrayRef<unsigned> Buffers) override;
|
|
|
|
void printView(llvm::raw_ostream &OS) const override {
|
|
printSchedulerStatistics(OS);
|
|
printSchedulerUsage(OS);
|
|
}
|
|
};
|
|
} // namespace mca
|
|
|
|
#endif
|