================
@@ -127,6 +127,11 @@ void loongarch::getLoongArchTargetFeatures(const Driver &D,
const llvm::Triple &Triple,
const ArgList &Args,
std::vector<StringRef> &Features) {
+ // Enable the `lsx` feature on 64-bit LoongArch by default.
+ if (Triple.isLoongArch64() &&
+ (!Args.hasArg(clang::driver::options::OPT_march_EQ)))
----------------
MaskRay wrote:
Prefer `hasArgNoClaim` to have a single place to claim the option.
Unclaimed options will lead to an unused argument warning.
https://github.com/llvm/llvm-project/pull/100056
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