// RUN: %target-swift-frontend -enable-experimental-concurrency -primary-file %s -module-name=test -disable-llvm-optzns -disable-swift-specific-llvm-optzns -emit-ir -sil-verify-all | %IRGenFileCheck %s

// REQUIRES: concurrency

sil_stage canonical

import Builtin
import Swift
import _Concurrency

// CHECK-LABEL: define{{.*}} void @test_simple(
// CHECK-SAME: %swift.context* swiftasync %0, [[INT]] %1, [[INT]] %2)
// CHECK: [[CTX:%[0-9]+]] = bitcast %swift.context* %0
// CHECK: [[RESUME:%[0-9]+]] = call i8* @llvm.coro.async.resume()
// CHECK-x86_64: call {{.*}} @llvm.coro.suspend.async{{.*}}(i32 0, i8* [[RESUME]], i8* bitcast (i8* (i8*)* @__swift_async_resume_get_context to i8*), i8* bitcast (void (i8*, [[INT]], [[INT]], %swift.context*)* @__swift_suspend_point to i8*), i8* [[RESUME]], [[INT]] %1, [[INT]] %2, %swift.context* {{%[0-9]+}})
// CHECK-arm64e: call {{.*}} @llvm.coro.suspend.async{{.*}}(i32 0, i8* [[RESUME]], i8* bitcast (i8* (i8*)* @__swift_async_resume_get_context to i8*), i8* bitcast (void (i8*, [[INT]], [[INT]], %swift.context*)* @__swift_suspend_point to i8*), i8* [[RESUME]], [[INT]] %1, [[INT]] %2, %swift.context* {{%[0-9]+}})
// CHECK: [[RET_CONTINUATION:%.*]] = bitcast void (%swift.context*)* {{.*}} to i8*
// CHECK:  call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* {{.*}}, i1 false, void (i8*, %swift.context*)* @[[TAIL_CALL_FUNC:.*]], i8* [[RET_CONTINUATION]]
// CHECK: unreachable

sil @test_simple : $@async (@guaranteed Optional<Builtin.Executor>) -> () {
bb0(%0 : $Optional<Builtin.Executor>):
  hop_to_executor %0 : $Optional<Builtin.Executor>
  %3 = tuple ()
  return %3 : $()
}

// CHECK-LABEL: define internal swift{{(tail)?}}cc void @__swift_suspend_point
// CHECK-SAME:  (i8* [[RESUME_FN:%0]], [[INT]] %1, [[INT]] %2, %swift.context* [[CTXT:%[^,]+]])
// CHECK-arm64e: [[RESUME_FN_INT:%[^,]+]] = ptrtoint i8* [[RESUME_FN]] to i64
// CHECK-arm64e: [[PTRAUTH_SIGN:%[^,]+]] = call i64 @llvm.ptrauth.sign.i64(i64 [[RESUME_FN_INT]], i32 0, i64 0)
// CHECK-arm64e: [[RESUME_FN:%[^,]+]] = inttoptr i64 [[PTRAUTH_SIGN]] to i8*
// CHECK:    {{(must)?}}tail call swift{{(tail)?}}cc void @swift_task_switch(%swift.context* swiftasync [[CTXT]], i8* [[RESUME_FN]], [[INT]] %1, [[INT]] %2)
// CHECK:    ret void

// CHECK: define{{.*}} void @[[TAIL_CALL_FUNC]](i8* %0, %swift.context* %1)
// CHECK:   %2 = bitcast i8* %0 to void (%swift.context*)*
// CHECK:   {{(must)?}}tail call swift{{(tail)?}}cc void %2(%swift.context* swiftasync %1)
// CHECK:   ret void
// CHECK: }