================
@@ -92,7 +92,34 @@ ArgInfo AArch64TargetInfo::classifyReturnType(const Type
*RetTy,
ArgInfo AArch64TargetInfo::classifyArgumentType(
const Type *Ty, bool IsVariadicFn, bool IsNamedArg,
unsigned CallingConvention, unsigned &NSRN, unsigned &NPRN) const {
- reportNYI("Classify argument type");
+ // TODO: Handled variadic functins here when Windows Arm64 EC is supported.
+
+ if (Ty->isVector()) {
+ reportNYI("Vector argument type");
+ return ArgInfo::getDirect();
+ }
+
+ if (!passAsAggregateType(Ty)) {
+ if (const auto *IntTy = dyn_cast<IntegerType>(Ty)) {
+ if (IntTy->isBitInt()) {
+ reportNYI("BitInt argument type");
+ return ArgInfo::getDirect();
+ }
+ if (isPromotableInteger(IntTy) && isDarwinPCS()) {
+ return ArgInfo::getExtend(IntTy);
+ }
+ }
+
+ // TODO: Legal vector types will update NSRN or NPRN.
+
+ if (Ty->isFloat())
+ NSRN = std::min(NSRN + 1, 8u);
+
+ // Everything not handled above is returned directly.
+ return ArgInfo::getDirect();
+ }
+
+ reportNYI("Aggregate argument type");
return ArgInfo::getDirect();
----------------
DavidTruby wrote:
nit: maybe add a comment that aggregates aren't implemented yet? As is this
slightly implies that aggregates will always be returned Direct.
https://github.com/llvm/llvm-project/pull/216849
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