Update clang to r339409b.
Change-Id: Ied8a188bb072c40035320acedc86164b66d920af
diff --git a/linux-x64/clang/include/llvm/XRay/BlockVerifier.h b/linux-x64/clang/include/llvm/XRay/BlockVerifier.h
new file mode 100644
index 0000000..b43a435
--- /dev/null
+++ b/linux-x64/clang/include/llvm/XRay/BlockVerifier.h
@@ -0,0 +1,69 @@
+//===- BlockVerifier.h - FDR Block Verifier -------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// An implementation of the RecordVisitor which verifies a sequence of records
+// associated with a block, following the FDR mode log format's specifications.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_INCLUDE_LLVM_XRAY_BLOCKVERIFIER_H_
+#define LLVM_INCLUDE_LLVM_XRAY_BLOCKVERIFIER_H_
+
+#include "llvm/XRay/FDRRecords.h"
+#include <array>
+#include <bitset>
+
+namespace llvm {
+namespace xray {
+
+class BlockVerifier : public RecordVisitor {
+public:
+ // We force State elements to be size_t, to be used as indices for containers.
+ enum class State : std::size_t {
+ Unknown,
+ BufferExtents,
+ NewBuffer,
+ WallClockTime,
+ PIDEntry,
+ NewCPUId,
+ TSCWrap,
+ CustomEvent,
+ Function,
+ CallArg,
+ EndOfBuffer,
+ StateMax,
+ };
+
+private:
+ // We keep track of the current record seen by the verifier.
+ State CurrentRecord = State::Unknown;
+
+ // Transitions the current record to the new record, records an error on
+ // invalid transitions.
+ Error transition(State To);
+
+public:
+ Error visit(BufferExtents &) override;
+ Error visit(WallclockRecord &) override;
+ Error visit(NewCPUIDRecord &) override;
+ Error visit(TSCWrapRecord &) override;
+ Error visit(CustomEventRecord &) override;
+ Error visit(CallArgRecord &) override;
+ Error visit(PIDRecord &) override;
+ Error visit(NewBufferRecord &) override;
+ Error visit(EndBufferRecord &) override;
+ Error visit(FunctionRecord &) override;
+
+ Error verify();
+ void reset();
+};
+
+} // namespace xray
+} // namespace llvm
+
+#endif // LLVM_INCLUDE_LLVM_XRAY_BLOCKVERIFIER_H_