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