[Sanitizer] Refactor sanitizer options in LangOptions.
Get rid of ugly SanitizerOptions class thrust into LangOptions:
* Make SanitizeAddressFieldPadding a regular language option,
and rely on default behavior to initialize/reset it.
* Make SanitizerBlacklistFile a regular member LangOptions.
* Introduce the helper class "SanitizerSet" to represent the
set of enabled sanitizers and make it a member of LangOptions.
It is exactly the entity we want to cache and modify in CodeGenFunction,
for instance. We'd also be able to reuse SanitizerSet in
CodeGenOptions for storing the set of recoverable sanitizers,
and in the Driver to represent the set of sanitizers
turned on/off by the commandline flags.
No functionality change.
llvm-svn: 221653
diff --git a/clang/lib/Basic/Sanitizers.cpp b/clang/lib/Basic/Sanitizers.cpp
new file mode 100644
index 0000000..7bc884d
--- /dev/null
+++ b/clang/lib/Basic/Sanitizers.cpp
@@ -0,0 +1,31 @@
+//===--- Sanitizers.cpp - C Language Family Language Options ----*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the classes from Sanitizers.h
+//
+//===----------------------------------------------------------------------===//
+#include "clang/Basic/Sanitizers.h"
+
+using namespace clang;
+
+SanitizerSet::SanitizerSet() : Kinds(0) {}
+
+bool SanitizerSet::has(SanitizerKind K) const {
+ unsigned Bit = static_cast<unsigned>(K);
+ return Kinds & (1 << Bit);
+}
+
+void SanitizerSet::set(SanitizerKind K, bool Value) {
+ unsigned Bit = static_cast<unsigned>(K);
+ Kinds = Value ? (Kinds | (1 << Bit)) : (Kinds & ~(1 << Bit));
+}
+
+void SanitizerSet::clear() {
+ Kinds = 0;
+}