Adding nocf_check attribute for cf-protection fine tuning
The patch adds nocf_check target independent attribute for disabling checks that were enabled by cf-protection flag.
The attribute can be appertained to functions and function pointers.
Attribute name follows GCC's similar attribute name.
Differential Revision: https://reviews.llvm.org/D41880
llvm-svn: 327768
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index ff8db47..330212a 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2042,6 +2042,12 @@
}
}
+ if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
+ StringRef Name = A->getValue();
+ if (Name == "full" || Name == "branch") {
+ Opts.CFProtectionBranch = 1;
+ }
+ }
// -cl-std only applies for OpenCL language standards.
// Override the -std option in this case.
if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {