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-rw-r--r--llvm/tools/llvm-mca/BackendPrinter.cpp69
-rw-r--r--llvm/tools/llvm-mca/BackendPrinter.h26
-rw-r--r--llvm/tools/llvm-mca/CMakeLists.txt1
-rw-r--r--llvm/tools/llvm-mca/SummaryView.cpp83
-rw-r--r--llvm/tools/llvm-mca/SummaryView.h95
-rw-r--r--llvm/tools/llvm-mca/llvm-mca.cpp10
6 files changed, 193 insertions, 91 deletions
diff --git a/llvm/tools/llvm-mca/BackendPrinter.cpp b/llvm/tools/llvm-mca/BackendPrinter.cpp
index d98082ad237..7772903a3d7 100644
--- a/llvm/tools/llvm-mca/BackendPrinter.cpp
+++ b/llvm/tools/llvm-mca/BackendPrinter.cpp
@@ -20,76 +20,7 @@ namespace mca {
using namespace llvm;
-void BackendPrinter::printGeneralStatistics(raw_ostream &OS,
- unsigned Iterations,
- unsigned Cycles,
- unsigned Instructions,
- unsigned DispatchWidth) const {
- unsigned TotalInstructions = Instructions * Iterations;
- double IPC = (double)TotalInstructions / Cycles;
-
- std::string Buffer;
- raw_string_ostream TempStream(Buffer);
- TempStream << "Iterations: " << Iterations;
- TempStream << "\nInstructions: " << TotalInstructions;
- TempStream << "\nTotal Cycles: " << Cycles;
- TempStream << "\nDispatch Width: " << DispatchWidth;
- TempStream << "\nIPC: " << format("%.2f", IPC) << '\n';
- TempStream.flush();
- OS << Buffer;
-}
-
-void BackendPrinter::printInstructionInfo(raw_ostream &OS) const {
- std::string Buffer;
- raw_string_ostream TempStream(Buffer);
-
- TempStream << "\n\nInstruction Info:\n";
- TempStream << "[1]: #uOps\n[2]: Latency\n[3]: RThroughput\n"
- << "[4]: MayLoad\n[5]: MayStore\n[6]: HasSideEffects\n\n";
-
- TempStream << "[1] [2] [3] [4] [5] [6]\tInstructions:\n";
- for (unsigned I = 0, E = B.getNumInstructions(); I < E; ++I) {
- const MCInst &Inst = B.getMCInstFromIndex(I);
- const InstrDesc &ID = B.getInstrDesc(Inst);
- unsigned NumMicroOpcodes = ID.NumMicroOps;
- unsigned Latency = ID.MaxLatency;
- double RThroughput = B.getRThroughput(ID);
- TempStream << ' ' << NumMicroOpcodes << " ";
- if (NumMicroOpcodes < 10)
- TempStream << " ";
- else if (NumMicroOpcodes < 100)
- TempStream << ' ';
- TempStream << Latency << " ";
- if (Latency < 10.0)
- TempStream << " ";
- else if (Latency < 100.0)
- TempStream << ' ';
- if (RThroughput) {
- TempStream << format("%.2f", RThroughput) << ' ';
- if (RThroughput < 10.0)
- TempStream << " ";
- else if (RThroughput < 100.0)
- TempStream << ' ';
- } else {
- TempStream << " - ";
- }
- TempStream << (ID.MayLoad ? " * " : " ");
- TempStream << (ID.MayStore ? " * " : " ");
- TempStream << (ID.HasSideEffects ? " * " : " ");
- MCIP.printInst(&Inst, TempStream, "", B.getSTI());
- TempStream << '\n';
- }
-
- TempStream.flush();
- OS << Buffer;
-}
-
void BackendPrinter::printReport(llvm::raw_ostream &OS) const {
- unsigned Cycles = B.getNumCycles();
- printGeneralStatistics(OS, B.getNumIterations(), Cycles, B.getNumInstructions(),
- B.getDispatchWidth());
- printInstructionInfo(OS);
-
for (const auto &V : Views)
V->printView(OS);
}
diff --git a/llvm/tools/llvm-mca/BackendPrinter.h b/llvm/tools/llvm-mca/BackendPrinter.h
index f018cc830f8..d8ab123b679 100644
--- a/llvm/tools/llvm-mca/BackendPrinter.h
+++ b/llvm/tools/llvm-mca/BackendPrinter.h
@@ -10,10 +10,7 @@
///
/// This file implements class BackendPrinter.
///
-/// BackendPrinter allows the customization of the performance report. With the
-/// help of this class, users can specify their own custom sequence of views.
-/// Each view is then printed out in sequence when method printReport() is
-/// called.
+/// BackendPrinter allows the customization of the performance report.
///
//===----------------------------------------------------------------------===//
@@ -21,15 +18,14 @@
#define LLVM_TOOLS_LLVM_MCA_BACKENDPRINTER_H
#include "Backend.h"
+#include "View.h"
#include "llvm/ADT/SmallVector.h"
-#include "llvm/MC/MCInstPrinter.h"
#include "llvm/Support/raw_ostream.h"
#define DEBUG_TYPE "llvm-mca"
namespace mca {
-class View;
/// \brief A printer class that knows how to collects statistics on the
/// code analyzed by the llvm-mca tool.
@@ -39,23 +35,17 @@ class View;
/// classes the task of printing out timeline information as well as
/// resource pressure.
class BackendPrinter {
- const Backend &B;
- llvm::MCInstPrinter &MCIP;
+ Backend &B;
llvm::SmallVector<std::unique_ptr<View>, 8> Views;
- void printGeneralStatistics(llvm::raw_ostream &OS,
- unsigned Iterations, unsigned Cycles,
- unsigned Instructions,
- unsigned DispatchWidth) const;
- void printInstructionInfo(llvm::raw_ostream &OS) const;
-
public:
- BackendPrinter(const Backend &backend, llvm::MCInstPrinter &IP)
- : B(backend), MCIP(IP) {}
+ BackendPrinter(Backend &backend) : B(backend) {}
- llvm::MCInstPrinter &getMCInstPrinter() const { return MCIP; }
+ void addView(std::unique_ptr<View> V) {
+ B.addEventListener(V.get());
+ Views.emplace_back(std::move(V));
+ }
- void addView(std::unique_ptr<View> V) { Views.emplace_back(std::move(V)); }
void printReport(llvm::raw_ostream &OS) const;
};
diff --git a/llvm/tools/llvm-mca/CMakeLists.txt b/llvm/tools/llvm-mca/CMakeLists.txt
index e6a743551cd..126c75e18f7 100644
--- a/llvm/tools/llvm-mca/CMakeLists.txt
+++ b/llvm/tools/llvm-mca/CMakeLists.txt
@@ -22,5 +22,6 @@ add_llvm_tool(llvm-mca
ResourcePressureView.cpp
Scheduler.cpp
TimelineView.cpp
+ SummaryView.cpp
View.cpp
)
diff --git a/llvm/tools/llvm-mca/SummaryView.cpp b/llvm/tools/llvm-mca/SummaryView.cpp
new file mode 100644
index 00000000000..7b1252ad057
--- /dev/null
+++ b/llvm/tools/llvm-mca/SummaryView.cpp
@@ -0,0 +1,83 @@
+//===--------------------- SummaryView.cpp -------------------*- 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 implements the functionalities used by the SummaryView to print
+/// the report information.
+///
+//===----------------------------------------------------------------------===//
+
+#include "SummaryView.h"
+#include "llvm/CodeGen/TargetSchedule.h"
+
+namespace mca {
+
+using namespace llvm;
+
+void SummaryView::printSummary(raw_ostream &OS) const {
+ unsigned TotalInstructions = Instructions * Iterations;
+ double IPC = (double)TotalInstructions / TotalCycles;
+
+ std::string Buffer;
+ raw_string_ostream TempStream(Buffer);
+ TempStream << "Iterations: " << Iterations;
+ TempStream << "\nInstructions: " << TotalInstructions;
+ TempStream << "\nTotal Cycles: " << TotalCycles;
+ TempStream << "\nDispatch Width: " << DispatchWidth;
+ TempStream << "\nIPC: " << format("%.2f", IPC) << '\n';
+ TempStream.flush();
+ OS << Buffer;
+}
+
+void SummaryView::printInstructionInfo(raw_ostream &OS) const {
+ std::string Buffer;
+ raw_string_ostream TempStream(Buffer);
+
+ TempStream << "\n\nInstruction Info:\n";
+ TempStream << "[1]: #uOps\n[2]: Latency\n[3]: RThroughput\n"
+ << "[4]: MayLoad\n[5]: MayStore\n[6]: HasSideEffects\n\n";
+
+ TempStream << "[1] [2] [3] [4] [5] [6]\tInstructions:\n";
+ for (unsigned I = 0, E = Instructions; I < E; ++I) {
+ const MCInst &Inst = B.getMCInstFromIndex(I);
+ const InstrDesc &ID = B.getInstrDesc(Inst);
+ unsigned NumMicroOpcodes = ID.NumMicroOps;
+ unsigned Latency = ID.MaxLatency;
+ double RThroughput = B.getRThroughput(ID);
+ TempStream << ' ' << NumMicroOpcodes << " ";
+ if (NumMicroOpcodes < 10)
+ TempStream << " ";
+ else if (NumMicroOpcodes < 100)
+ TempStream << ' ';
+ TempStream << Latency << " ";
+ if (Latency < 10.0)
+ TempStream << " ";
+ else if (Latency < 100.0)
+ TempStream << ' ';
+ if (RThroughput) {
+ TempStream << format("%.2f", RThroughput) << ' ';
+ if (RThroughput < 10.0)
+ TempStream << " ";
+ else if (RThroughput < 100.0)
+ TempStream << ' ';
+ } else {
+ TempStream << " - ";
+ }
+ TempStream << (ID.MayLoad ? " * " : " ");
+ TempStream << (ID.MayStore ? " * " : " ");
+ TempStream << (ID.HasSideEffects ? " * " : " ");
+ MCIP.printInst(&Inst, TempStream, "", B.getSTI());
+ TempStream << '\n';
+ }
+
+ TempStream.flush();
+ OS << Buffer;
+}
+
+} // namespace mca.
diff --git a/llvm/tools/llvm-mca/SummaryView.h b/llvm/tools/llvm-mca/SummaryView.h
new file mode 100644
index 00000000000..d42d60c6e69
--- /dev/null
+++ b/llvm/tools/llvm-mca/SummaryView.h
@@ -0,0 +1,95 @@
+//===--------------------- SummaryView.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 implements the summary view.
+///
+/// The goal of the summary view is to give a very quick overview of the
+/// performance throughput. Below is an example of summary view:
+///
+///
+/// Iterations: 300
+/// Instructions: 900
+/// Total Cycles: 610
+/// Dispatch Width: 2
+/// IPC: 1.48
+///
+///
+/// Instruction Info:
+/// [1]: #uOps
+/// [2]: Latency
+/// [3]: RThroughput
+/// [4]: MayLoad
+/// [5]: MayStore
+/// [6]: HasSideEffects
+///
+/// [1] [2] [3] [4] [5] [6] Instructions:
+/// 1 2 1.00 vmulps %xmm0, %xmm1, %xmm2
+/// 1 3 1.00 vhaddps %xmm2, %xmm2, %xmm3
+/// 1 3 1.00 vhaddps %xmm3, %xmm3, %xmm4
+///
+/// The summary view is structured in two sections.
+///
+/// The first section collects a a few performance numbers. The two main
+/// performance indicators are 'Total Cycles' and IPC (Instructions Per Cycle).
+///
+/// The second section shows the latency and reciprocal throughput of every
+/// instruction in the sequence. This section also reports extra informaton
+/// related to the number of micro opcodes, and opcode properties (i.e.
+/// 'MayLoad', 'MayStore', 'HasSideEffects)
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_MCA_SUMMARYVIEW_H
+#define LLVM_TOOLS_LLVM_MCA_SUMMARYVIEW_H
+
+#include "Backend.h"
+#include "View.h"
+#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/Support/raw_ostream.h"
+
+#define DEBUG_TYPE "llvm-mca"
+
+namespace mca {
+
+/// \brief A printer class that knows how to collects statistics on the
+/// code analyzed by the llvm-mca tool.
+///
+/// This class knows how to print out the analysis information collected
+/// during the execution of the code. Internally, it delegates to other
+/// classes the task of printing out timeline information as well as
+/// resource pressure.
+class SummaryView : public View {
+ const Backend &B;
+ llvm::MCInstPrinter &MCIP;
+ const unsigned Iterations;
+ const unsigned Instructions;
+ const unsigned DispatchWidth;
+ unsigned TotalCycles;
+
+ void printSummary(llvm::raw_ostream &OS) const;
+ void printInstructionInfo(llvm::raw_ostream &OS) const;
+
+public:
+ SummaryView(const Backend &backend, llvm::MCInstPrinter &IP,
+ unsigned NumIterations, unsigned NumInstructions, unsigned Width)
+ : B(backend), MCIP(IP), Iterations(NumIterations),
+ Instructions(NumInstructions), DispatchWidth(Width), TotalCycles(0) {}
+
+ void onCycleEnd(unsigned /* unused */) override { ++TotalCycles; }
+
+ void printView(llvm::raw_ostream &OS) const override {
+ printSummary(OS);
+ printInstructionInfo(OS);
+ }
+};
+
+} // namespace mca
+
+#endif
diff --git a/llvm/tools/llvm-mca/llvm-mca.cpp b/llvm/tools/llvm-mca/llvm-mca.cpp
index efc20e926b7..6e14f0b0caa 100644
--- a/llvm/tools/llvm-mca/llvm-mca.cpp
+++ b/llvm/tools/llvm-mca/llvm-mca.cpp
@@ -24,6 +24,7 @@
#include "BackendPrinter.h"
#include "BackendStatistics.h"
#include "ResourcePressureView.h"
+#include "SummaryView.h"
#include "TimelineView.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
@@ -321,26 +322,27 @@ int main(int argc, char **argv) {
LoadQueueSize, StoreQueueSize, AssumeNoAlias);
std::unique_ptr<mca::BackendPrinter> Printer =
- llvm::make_unique<mca::BackendPrinter>(*B, *IP);
+ llvm::make_unique<mca::BackendPrinter>(*B);
+
+ std::unique_ptr<mca::SummaryView> SV = llvm::make_unique<mca::SummaryView>(
+ *B, *IP, S->getNumIterations(), S->size(), Width);
+ Printer->addView(std::move(SV));
if (PrintModeVerbose) {
std::unique_ptr<mca::BackendStatistics> BS =
llvm::make_unique<mca::BackendStatistics>(*B);
- B->addEventListener(BS.get());
Printer->addView(std::move(BS));
}
std::unique_ptr<mca::ResourcePressureView> RPV =
llvm::make_unique<mca::ResourcePressureView>(*STI, *IP, *S,
B->getProcResourceMasks());
- B->addEventListener(RPV.get());
Printer->addView(std::move(RPV));
if (PrintTimelineView) {
std::unique_ptr<mca::TimelineView> TV =
llvm::make_unique<mca::TimelineView>(
*STI, *IP, *S, TimelineMaxIterations, TimelineMaxCycles);
- B->addEventListener(TV.get());
Printer->addView(std::move(TV));
}
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