================
@@ -3167,3 +3167,25 @@ void tools::handleInterchangeLoopsArgs(const ArgList
&Args,
options::OPT_fno_loop_interchange, EnableInterchange))
CmdArgs.push_back("-floop-interchange");
}
+
+// Parse -mprefer-vector-width=. Return the Value string if well-formed.
+// Otherwise, return an empty string and issue a diagnosic message if needed.
+StringRef tools::ParseMPreferVectorWidthOption(clang::DiagnosticsEngine &Diags,
+ const llvm::opt::ArgList &Args)
{
+ Arg *A =
Args.getLastArg(clang::driver::options::OPT_mprefer_vector_width_EQ);
+ if (!A)
+ return "";
+
+ StringRef Value = A->getValue();
+ unsigned Width LLVM_ATTRIBUTE_UNINITIALIZED;
----------------
eugeneepshteyn wrote:
This is fine, but FWIW, there's C++ `[[maybe_unused]]` that could possibly work
here: https://en.cppreference.com/w/cpp/language/attributes/maybe_unused
https://github.com/llvm/llvm-project/pull/142800
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