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//===--------------------- RegisterFileStatistics.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 view collects and prints register file usage statistics.
///
/// Example (-mcpu=btver2):
/// ========================
///
/// Register File statistics:
/// Total number of mappings created: 6
/// Max number of mappings used: 3
///
/// * Register File #1 -- FpuPRF:
/// Number of physical registers: 72
/// Total number of mappings created: 0
/// Max number of mappings used: 0
///
/// * Register File #2 -- IntegerPRF:
/// Number of physical registers: 64
/// Total number of mappings created: 6
/// Max number of mappings used: 3
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_MCA_REGISTERFILESTATISTICS_H
#define LLVM_TOOLS_LLVM_MCA_REGISTERFILESTATISTICS_H
#include "View.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/MC/MCSubtargetInfo.h"
namespace mca {
class RegisterFileStatistics : public View {
const llvm::MCSubtargetInfo &STI;
// Used to track the number of physical registers used in a register file.
struct RegisterFileUsage {
unsigned TotalMappings;
unsigned MaxUsedMappings;
unsigned CurrentlyUsedMappings;
};
// There is one entry for each register file implemented by the processor.
llvm::SmallVector<RegisterFileUsage, 4> RegisterFiles;
void initializeRegisterFileInfo();
public:
RegisterFileStatistics(const llvm::MCSubtargetInfo &sti) : STI(sti) {
initializeRegisterFileInfo();
}
void onEvent(const HWInstructionEvent &Event) override;
void printView(llvm::raw_ostream &OS) const override;
};
} // namespace mca
#endif
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