[llvm-mca] Renamed BackendStatistics to RetireControlUnitStatistics.

Also, removed flag -verbose in favor of flag -retire-stats.

llvm-svn: 329794

1 files changed, 51 insertions, 0 deletions

diff --git a/llvm/tools/llvm-mca/RetireControlUnitStatistics.cpp b/llvm/tools/llvm-mca/RetireControlUnitStatistics.cpp
new file mode 100644
index 00000000000..5b1a1ded170
--- /dev/null
+++ b/llvm/tools/llvm-mca/RetireControlUnitStatistics.cpp
@@ -0,0 +1,51 @@
+//===--------------------- RetireControlUnitStatistics.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 RetireControlUnitStatistics interface.
+///
+//===----------------------------------------------------------------------===//
+
+#include "RetireControlUnitStatistics.h"
+#include "llvm/Support/Format.h"
+
+using namespace llvm;
+
+namespace mca {
+
+void RetireControlUnitStatistics::onInstructionEvent(
+    const HWInstructionEvent &Event) {
+  if (Event.Type == HWInstructionEvent::Retired)
+    ++NumRetired;
+}
+
+void RetireControlUnitStatistics::printView(llvm::raw_ostream &OS) const {
+  std::string Buffer;
+  raw_string_ostream TempStream(Buffer);
+  TempStream << "\n\nRetire Control Unit - "
+             << "number of cycles where we saw N instructions retired:\n";
+  TempStream << "[# retired], [# cycles]\n";
+
+  for (const std::pair<unsigned, unsigned> &Entry : RetiredPerCycle) {
+    TempStream << " " << Entry.first;
+    if (Entry.first < 10)
+      TempStream << ",           ";
+    else
+      TempStream << ",          ";
+    TempStream << Entry.second << "  ("
+               << format("%.1f", ((double)Entry.second / NumCycles) * 100.0)
+               << "%)\n";
+  }
+
+  TempStream.flush();
+  OS << Buffer;
+}
+
+} // namespace mca