[llvm] Add initial support for SPE brstack format (PR #129231)

[Paschalis Mpeis via llvm-commits]

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@@ -0,0 +1,167 @@
+//===- bolt/unittests/Profile/PerfSpeEvents.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
+//
+//===----------------------------------------------------------------------===//
+
+#ifdef AARCH64_AVAILABLE
+
+#include "bolt/Core/BinaryContext.h"
+#include "bolt/Profile/DataAggregator.h"
+#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/DebugInfo/DWARF/DWARFContext.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/TargetSelect.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace llvm::bolt;
+using namespace llvm::object;
+using namespace llvm::ELF;
+
+namespace opts {
+extern cl::opt<std::string> ReadPerfEvents;
+extern cl::opt<bool> ArmSPE;
+} // namespace opts
+
+namespace llvm {
+namespace bolt {
+
+/// Perform checks on perf SPE branch events combined with other SPE or perf
+/// events.
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paschalis-mpeis wrote:

nit:
```suggestion
/// Perform checks on perf SPE branch events.
```

https://github.com/llvm/llvm-project/pull/129231