Allow thread sanitizer in clang driver on FreeBSD

[kutuzov.viktor.84]

Summary

Intended to be committed after D5990 and D5992.

[kutuzov.viktor.84]

Reworked similarly to how the Function kind filters out.

[dvyukov]

LGTM

Closed by commit rL220675 (authored by vkutuzov).

[kutuzov.viktor.84]

Reverted in rL220677 due to failures on some clang tests that depend on the way the sanitizer kinds filter out.

cfe/trunk/lib/Driver/SanitizerArgs.cpp

 }
 
 unsigned SanitizerArgs::filterUnsupportedKinds(const ToolChain &TC,
                                                unsigned Kinds,
                                                const llvm::opt::ArgList &Args,
                                                const llvm::opt::Arg *A,
                                                bool DiagnoseErrors,
                                                unsigned &DiagnosedKinds) {
+  bool IsFreeBSD = TC.getTriple().getOS() == llvm::Triple::FreeBSD;
   bool IsLinux = TC.getTriple().getOS() == llvm::Triple::Linux;
   bool IsX86 = TC.getTriple().getArch() == llvm::Triple::x86;
   bool IsX86_64 = TC.getTriple().getArch() == llvm::Triple::x86_64;
   if (!(IsLinux && IsX86_64)) {
-    filterUnsupportedMask(TC, Kinds, Thread | Memory | DataFlow, Args, A,
+    filterUnsupportedMask(TC, Kinds, Memory | DataFlow, Args, A,
+                          DiagnoseErrors, DiagnosedKinds);
+  }
+  if (!((IsLinux || IsFreeBSD) && IsX86_64)) {
+    filterUnsupportedMask(TC, Kinds, Thread, Args, A,
                           DiagnoseErrors, DiagnosedKinds);
   }
   if (!(IsLinux && (IsX86 || IsX86_64))) {
     filterUnsupportedMask(TC, Kinds, Function, Args, A, DiagnoseErrors,
                           DiagnosedKinds);
   }
   return Kinds;
 }