1 files changed, 60 insertions, 0 deletions
diff --git a/llvm/tools/llvm-mca/Views/InstructionView.cpp b/llvm/tools/llvm-mca/Views/InstructionView.cpp
new file mode 100644
index 000000000000..7f7a5b7cdbbb
--- /dev/null
+++ b/llvm/tools/llvm-mca/Views/InstructionView.cpp
@@ -0,0 +1,60 @@
+//===----------------------- View.cpp ---------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+/// \file
+///
+/// This file defines the member functions of the class InstructionView.
+///
+//===----------------------------------------------------------------------===//
+
+#include <sstream>
+#include "Views/InstructionView.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+
+namespace llvm {
+namespace mca {
+
+StringRef InstructionView::printInstructionString(const llvm::MCInst &MCI) const {
+  InstructionString = "";
+  MCIP.printInst(&MCI, 0, "", STI, InstrStream);
+  InstrStream.flush();
+  // Remove any tabs or spaces at the beginning of the instruction.
+  return StringRef(InstructionString).ltrim();
+}
+
+json::Value InstructionView::toJSON() const {
+  json::Object JO;
+  json::Array SourceInfo;
+  for (const auto &MCI : getSource()) {
+    StringRef Instruction = printInstructionString(MCI);
+    SourceInfo.push_back(Instruction.str());
+  }
+  JO.try_emplace("Instructions", std::move(SourceInfo));
+
+  json::Array Resources;
+  const MCSchedModel &SM = STI.getSchedModel();
+  for (unsigned I = 1, E = SM.getNumProcResourceKinds(); I < E; ++I) {
+    const MCProcResourceDesc &ProcResource = *SM.getProcResource(I);
+    unsigned NumUnits = ProcResource.NumUnits;
+    // Skip groups and invalid resources with zero units.
+    if (ProcResource.SubUnitsIdxBegin || !NumUnits)
+      continue;
+    for (unsigned J = 0; J < NumUnits; ++J) {
+      std::stringstream ResNameStream;
+      ResNameStream << ProcResource.Name;
+      if (NumUnits > 1)
+        ResNameStream << "." << J;
+      Resources.push_back(ResNameStream.str());
+    }
+  }
+  JO.try_emplace("Resources", json::Object({{"CPUName", MCPU}, {"Resources", std::move(Resources)}}));
+
+  return JO;
+}
+} // namespace mca
+} // namespace llvm