[clang] [Driver][BoundsSafety] Add -fbounds-safety-experimental flag (PR #70480)

[Dan Liew via cfe-commits]

================
@@ -3618,6 +3618,23 @@ void CompilerInvocationBase::GenerateLangArgs(const LangOptions &Opts,
     GenerateArg(Consumer, OPT_frandomize_layout_seed_EQ, Opts.RandstructSeed);
 }
 
+static bool SupportsBoundsSafety(Language Lang) {
+  // Currently, bounds safety is only supported for C. However, it's also
+  // possible to pass assembly files and LLVM IR through Clang, and
+  // those should be trivially supported. This is especially important because
+  // some build systems, like xcbuild and somewhat clumsy Makefiles, will pass
+  // C_FLAGS to Clang while building assembly files.
+  switch (Lang) {
+  case Language::Unknown:
+  case Language::Asm:
+  case Language::LLVM_IR:
----------------
delcypher wrote:

Can we add test cases for LLVM IR and ASM if this is something we want the frontend to allow?

https://github.com/llvm/llvm-project/pull/70480