[esan] Add custom flag support

Summary:
Adds custom flag support to EfficiencySanitizer's runtime library.

Adds an initial flag cache_line_size which will be used by multiple tools.

Reviewers: aizatsky, vitalybuka

Subscribers: llvm-commits, eugenis, kcc, zhaoqin, aizatsky, kubabrecka

Differential Revision: http://reviews.llvm.org/D20478

llvm-svn: 270256

1 files changed, 41 insertions, 0 deletions

diff --git a/compiler-rt/lib/esan/esan_flags.h b/compiler-rt/lib/esan/esan_flags.h
new file mode 100644
index 00000000000..c8f4ef5ab2b
--- /dev/null
+++ b/compiler-rt/lib/esan/esan_flags.h
@@ -0,0 +1,41 @@
+//===-- esan_flags.h --------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of EfficiencySanitizer, a family of performance tuners.
+//
+// Esan runtime flags.
+//===----------------------------------------------------------------------===//
+
+#ifndef ESAN_FLAGS_H
+#define ESAN_FLAGS_H
+
+#include "sanitizer_common/sanitizer_internal_defs.h"
+#include "sanitizer_common/sanitizer_flag_parser.h"
+
+namespace __esan {
+
+class Flags {
+public:
+#define ESAN_FLAG(Type, Name, DefaultValue, Description) Type Name;
+#include "esan_flags.inc"
+#undef ESAN_FLAG
+
+  void setDefaults();
+};
+
+extern Flags EsanFlagsDontUseDirectly;
+inline Flags *getFlags() {
+  return &EsanFlagsDontUseDirectly;
+}
+
+void initializeFlags();
+
+} // namespace __esan
+
+#endif // ESAN_FLAGS_H