[flang-commits] [clang] [flang] [Driver] Move CommonArgs to a location visible by the Frontend Drivers (PR #142800)

[Shafik Yaghmour via flang-commits]

================
@@ -3167,3 +3167,29 @@ void tools::handleInterchangeLoopsArgs(const ArgList &Args,
                    options::OPT_fno_loop_interchange, EnableInterchange))
     CmdArgs.push_back("-floop-interchange");
 }
+
+std::optional<StringRef> tools::ParseMPreferVectorWidthOption(
+    clang::DiagnosticsEngine &Diags, const llvm::opt::ArgList &Args,
+    ArgStringList &CmdArgs, bool isCompilerDriver) {
+  // If this was invoked by the Compiler Driver, we pass through the option
+  // as-is. Otherwise, if this is the Frontend Driver, we want just the value.
+  StringRef Out = (isCompilerDriver) ? "-mprefer-vector-width=" : "";
----------------
shafik wrote:

```suggestion
  StringRef Out = isCompilerDriver ? "-mprefer-vector-width=" : "";
```

https://github.com/llvm/llvm-project/pull/142800