[stackprotector] Add command line option -fstack-protector-strong
This option has the following effects:
* It adds the sspstrong IR attribute to each function within the CU.
* It defines the macro __SSP_STRONG__ with the value of 2.
Differential Revision: http://llvm-reviews.chandlerc.com/D2717
llvm-svn: 201120
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index d2bb9ba..5792f42 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -10,6 +10,7 @@
#include "Tools.h"
#include "InputInfo.h"
#include "ToolChains.h"
+#include "clang/Basic/LangOptions.h"
#include "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/Version.h"
#include "clang/Driver/Action.h"
@@ -3114,11 +3115,14 @@
unsigned StackProtectorLevel = 0;
if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
options::OPT_fstack_protector_all,
+ options::OPT_fstack_protector_strong,
options::OPT_fstack_protector)) {
if (A->getOption().matches(options::OPT_fstack_protector))
- StackProtectorLevel = 1;
+ StackProtectorLevel = LangOptions::SSPOn;
+ else if (A->getOption().matches(options::OPT_fstack_protector_strong))
+ StackProtectorLevel = LangOptions::SSPStrong;
else if (A->getOption().matches(options::OPT_fstack_protector_all))
- StackProtectorLevel = 2;
+ StackProtectorLevel = LangOptions::SSPReq;
} else {
StackProtectorLevel =
getToolChain().GetDefaultStackProtectorLevel(KernelOrKext);