--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/XRay/FDRTraceExpander.cpp	Wed Aug 14 19:46:37 2019 +0900
@@ -0,0 +1,131 @@
+//===- FDRTraceExpander.cpp -----------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+#include "llvm/XRay/FDRTraceExpander.h"
+
+namespace llvm {
+namespace xray {
+
+void TraceExpander::resetCurrentRecord() {
+  if (BuildingRecord)
+    C(CurrentRecord);
+  BuildingRecord = false;
+  CurrentRecord.CallArgs.clear();
+  CurrentRecord.Data.clear();
+}
+
+Error TraceExpander::visit(BufferExtents &) {
+  resetCurrentRecord();
+  return Error::success();
+}
+
+Error TraceExpander::visit(WallclockRecord &) { return Error::success(); }
+
+Error TraceExpander::visit(NewCPUIDRecord &R) {
+  CPUId = R.cpuid();
+  BaseTSC = R.tsc();
+  return Error::success();
+}
+
+Error TraceExpander::visit(TSCWrapRecord &R) {
+  BaseTSC = R.tsc();
+  return Error::success();
+}
+
+Error TraceExpander::visit(CustomEventRecord &R) {
+  resetCurrentRecord();
+  if (!IgnoringRecords) {
+    CurrentRecord.TSC = R.tsc();
+    CurrentRecord.CPU = R.cpu();
+    CurrentRecord.PId = PID;
+    CurrentRecord.TId = TID;
+    CurrentRecord.Type = RecordTypes::CUSTOM_EVENT;
+    CurrentRecord.Data = R.data();
+    BuildingRecord = true;
+  }
+  return Error::success();
+}
+
+Error TraceExpander::visit(CustomEventRecordV5 &R) {
+  resetCurrentRecord();
+  if (!IgnoringRecords) {
+    BaseTSC += R.delta();
+    CurrentRecord.TSC = BaseTSC;
+    CurrentRecord.CPU = CPUId;
+    CurrentRecord.PId = PID;
+    CurrentRecord.TId = TID;
+    CurrentRecord.Type = RecordTypes::CUSTOM_EVENT;
+    CurrentRecord.Data = R.data();
+    BuildingRecord = true;
+  }
+  return Error::success();
+}
+
+Error TraceExpander::visit(TypedEventRecord &R) {
+  resetCurrentRecord();
+  if (!IgnoringRecords) {
+    BaseTSC += R.delta();
+    CurrentRecord.TSC = BaseTSC;
+    CurrentRecord.CPU = CPUId;
+    CurrentRecord.PId = PID;
+    CurrentRecord.TId = TID;
+    CurrentRecord.RecordType = R.eventType();
+    CurrentRecord.Type = RecordTypes::TYPED_EVENT;
+    CurrentRecord.Data = R.data();
+    BuildingRecord = true;
+  }
+  return Error::success();
+}
+
+Error TraceExpander::visit(CallArgRecord &R) {
+  CurrentRecord.CallArgs.push_back(R.arg());
+  CurrentRecord.Type = RecordTypes::ENTER_ARG;
+  return Error::success();
+}
+
+Error TraceExpander::visit(PIDRecord &R) {
+  PID = R.pid();
+  return Error::success();
+}
+
+Error TraceExpander::visit(NewBufferRecord &R) {
+  if (IgnoringRecords)
+    IgnoringRecords = false;
+  TID = R.tid();
+  if (LogVersion == 2)
+    PID = R.tid();
+  return Error::success();
+}
+
+Error TraceExpander::visit(EndBufferRecord &) {
+  IgnoringRecords = true;
+  resetCurrentRecord();
+  return Error::success();
+}
+
+Error TraceExpander::visit(FunctionRecord &R) {
+  resetCurrentRecord();
+  if (!IgnoringRecords) {
+    BaseTSC += R.delta();
+    CurrentRecord.Type = R.recordType();
+    CurrentRecord.FuncId = R.functionId();
+    CurrentRecord.TSC = BaseTSC;
+    CurrentRecord.PId = PID;
+    CurrentRecord.TId = TID;
+    CurrentRecord.CPU = CPUId;
+    BuildingRecord = true;
+  }
+  return Error::success();
+}
+
+Error TraceExpander::flush() {
+  resetCurrentRecord();
+  return Error::success();
+}
+
+} // namespace xray
+} // namespace llvm