Added Control Flow Protection Flag
Cf-protection is a target independent flag that instructs the back-end to instrument control flow mechanisms like: Branch, Return, etc.
For example in X86 this flag will be used to instrument Indirect Branch Tracking instructions.
Differential Revision: https://reviews.llvm.org/D40478
Change-Id: I5126e766c0e6b84118cae0ee8a20fe78cc373dea
llvm-svn: 322063
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index b7241d2..2db660d 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -4008,6 +4008,11 @@
// Forward -cl options to -cc1
RenderOpenCLOptions(Args, CmdArgs);
+ if (Arg *A = Args.getLastArg(options::OPT_fcf_protection_EQ)) {
+ CmdArgs.push_back(
+ Args.MakeArgString(Twine("-fcf-protection=") + A->getValue()));
+ }
+
// Forward -f options with positive and negative forms; we translate
// these by hand.
if (Arg *A = getLastProfileSampleUseArg(Args)) {