[libFuzzer] split DataFlow.cpp into two .cpp files, one of which can be compiled w/o dfsan to speed things up (~25% speedup)

llvm-svn: 364002

1 files changed, 32 insertions, 0 deletions

diff --git a/compiler-rt/lib/fuzzer/dataflow/DataFlow.h b/compiler-rt/lib/fuzzer/dataflow/DataFlow.h
new file mode 100644
index 00000000000..35849fd8d8e
--- /dev/null
+++ b/compiler-rt/lib/fuzzer/dataflow/DataFlow.h
@@ -0,0 +1,32 @@
+/*===- DataFlow.h - a standalone DataFlow trace                     -------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+// Internal header file to connect DataFlow.cpp and DataFlowCallbacks.cpp.
+//===----------------------------------------------------------------------===*/
+
+#ifndef __LIBFUZZER_DATAFLOW_H
+#define __LIBFUZZER_DATAFLOW_H
+
+#include <cstddef>
+#include <cstdint>
+#include <sanitizer/dfsan_interface.h>
+
+// This data is shared between DataFlowCallbacks.cpp and DataFlow.cpp.
+struct CallbackData {
+  size_t NumFuncs, NumGuards;
+  const uintptr_t *PCsBeg, *PCsEnd;
+  dfsan_label *FuncLabels;  // Array of NumFuncs elements.
+  bool *BBExecuted;         // Array of NumGuards elements.
+};
+
+extern CallbackData __dft;
+
+enum {
+  PCFLAG_FUNC_ENTRY = 1,
+};
+
+#endif  // __LIBFUZZER_DATAFLOW_H