Add -link-cxx-sanitizer driver flag.

Summary:
This flag can be used to force linking of CXX-specific parts
of sanitizer runtimes into the final executable. It gives more precise
control than --driver-mode=g++ and comes handy when user links several
object files with sanitized C++ code into an executable, but wants
to provide libstdc++ himself, instead of relying on Clang dirver's
behavior.

Test Plan: clang regression test suite

Reviewers: chandlerc, rsmith

Reviewed By: rsmith

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D4824

llvm-svn: 215252

1 files changed, 5 insertions, 5 deletions

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 860454a..65760b4 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -2273,13 +2273,13 @@ static void addDfsanRT(const ToolChain &TC, const ArgList &Args,
 static void addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
                                  ArgStringList &CmdArgs) {
   const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
-  const Driver &D = TC.getDriver();
   if (Sanitize.needsUbsanRt())
-    addUbsanRT(TC, Args, CmdArgs, D.CCCIsCXX(),
-                    Sanitize.needsAsanRt() || Sanitize.needsTsanRt() ||
-                    Sanitize.needsMsanRt() || Sanitize.needsLsanRt());
+    addUbsanRT(TC, Args, CmdArgs, Sanitize.linkCXXRuntimes(),
+               Sanitize.needsAsanRt() || Sanitize.needsTsanRt() ||
+                   Sanitize.needsMsanRt() || Sanitize.needsLsanRt());
   if (Sanitize.needsAsanRt())
-    addAsanRT(TC, Args, CmdArgs, Sanitize.needsSharedAsanRt(), D.CCCIsCXX());
+    addAsanRT(TC, Args, CmdArgs, Sanitize.needsSharedAsanRt(),
+              Sanitize.linkCXXRuntimes());
   if (Sanitize.needsTsanRt())
     addTsanRT(TC, Args, CmdArgs);
   if (Sanitize.needsMsanRt())