Revert "Merge pull request swiftlang#75316 from drexin/wip-131960281"

This reverts commit e3577ed, reversing
changes made to f3acbb0.

Author: aschwaighofer

lib/IRGen/GenCall.cpp

@@ -3232,19 +3232,7 @@ class AsyncCallEmission final : public CallEmission {
 
     bool mayReturnErrorDirectly = mayReturnTypedErrorDirectly();
     if (mayReturnErrorDirectly && !nativeSchema.requiresIndirect()) {
-      llvm::Value *resultAgg;
-      if (resultTys.size() == 1) {
-        resultAgg = Builder.CreateExtractValue(result, numAsyncContextParams);
-      } else {
-        auto resultTy = llvm::StructType::get(IGM.getLLVMContext(), resultTys);
-        resultAgg = llvm::UndefValue::get(resultTy);
-        for (unsigned i = 0, e = resultTys.size(); i != e; ++i) {
-          llvm::Value *elt =
-              Builder.CreateExtractValue(result, numAsyncContextParams + i);
-          resultAgg = Builder.CreateInsertValue(resultAgg, elt, i);
-        }
-      }
-      return emitToUnmappedExplosionWithDirectTypedError(resultType, resultAgg,
+      return emitToUnmappedExplosionWithDirectTypedError(resultType, result,
                                                          out);
     } else if (resultTys.size() == 1) {
       result = Builder.CreateExtractValue(result, numAsyncContextParams);

test/IRGen/typed_throws.swift

@@ -188,20 +188,3 @@ func throwsGenericAsync<T: Error>(x: Bool, y: T) async throws(T) -> Int {
 
   return 32
 }
-
-enum TinyError: Error {
-  case a
-}
-
-@available(SwiftStdlib 6.0, *)
-func mayThrowAsyncTiny(x: Bool) async throws(TinyError) -> Bool {
-  guard x else {
-    throw .a
-  }
-  return false
-}
-
-@available(SwiftStdlib 6.0, *)
-func callsMayThrowAsyncTiny(x: Bool) async {
-  _ = try! await mayThrowAsyncTiny(x: x)
-}