File: async.sil

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// RUN: %target-sil-opt -enable-sil-verify-all=true %s | %target-sil-opt -enable-sil-verify-all=true | %FileCheck %s
// REQUIRES: concurrency

import Builtin
import Swift
import _Concurrency

// CHECK: sil @not_async_test : $@convention(thin) () -> () {
sil @not_async_test : $@convention(thin) () -> () {
bb0:
  %0 = tuple ()
  return %0 : $()
}

// CHECK: sil @not_async_test2 : $@convention(thin) (Builtin.Int32) -> () {
sil @not_async_test2 : $(Builtin.Int32) -> () {
bb0(%int : $Builtin.Int32):
  %0 = tuple ()
  return %0 : $()
}

// CHECK: sil @async_test : $@convention(thin) @async
sil @async_test : $@async () -> () {
bb0:
  %0 = tuple ()
  return %0 : $()
}

// CHECK: sil @take_async : $@convention(thin) (@async () -> ()) -> ()
sil @take_async : $(@async () -> ()) -> () {
bb0(%fn : $@async () -> ()):
  %0 = tuple ()
  return %0 : $()
}

// CHECK: sil @async_continuation : $@convention(thin) @async () -> () {
sil @async_continuation : $@async () -> () {
// CHECK-NEXT: bb
entry:
  // CHECK-NEXT: [[CONT:%.*]] = get_async_continuation Builtin.Int32
  %c = get_async_continuation Builtin.Int32
  // CHECK-NEXT: // function_ref
  // CHECK-NEXT: function_ref
  %f = function_ref @not_async_test : $@convention(thin) () -> ()
  // CHECK-NEXT: apply
  apply %f() : $@convention(thin) () -> ()
  // CHECK-NEXT: await_async_continuation [[CONT]] : $Builtin.RawUnsafeContinuation, resume [[RESUME:bb[0-9]+]]
  await_async_continuation %c : $Builtin.RawUnsafeContinuation, resume bb1
  // CHECK-NEXT: {{^ *$}}
  // CHECK-NEXT: [[RESUME]]([[RVALUE:%.*]] : $Builtin.Int32):
bb1(%r : $Builtin.Int32):
  return undef : $()
}

// CHECK: sil @async_continuation_throws : $@convention(thin) @async () -> () {
sil @async_continuation_throws : $@async () -> () {
// CHECK-NEXT: bb
entry:
  // CHECK-NEXT: [[CONT:%.*]] = get_async_continuation [throws] Builtin.Int32
  %c = get_async_continuation [throws] Builtin.Int32
  // CHECK-NEXT: // function_ref
  // CHECK-NEXT: function_ref
  %f = function_ref @not_async_test : $@convention(thin) () -> ()
  // CHECK-NEXT: apply
  apply %f() : $@convention(thin) () -> ()
  // CHECK-NEXT: await_async_continuation [[CONT]] : $Builtin.RawUnsafeContinuation, resume [[RESUME:bb[0-9]+]], error [[ERROR:bb[0-9]+]]
  await_async_continuation %c : $Builtin.RawUnsafeContinuation, resume bb1, error bb2
  // CHECK-NEXT: {{^ *$}}
  // CHECK-NEXT: [[RESUME]]([[RVALUE:%.*]] : $Builtin.Int32):
bb1(%r : $Builtin.Int32):
  // CHECK-NEXT: br
  br bb3
  // CHECK-NEXT: {{^ *$}}
  // CHECK-NEXT: [[ERROR]]([[EVALUE:%.*]] : $any Error):
bb2(%e : $Error):
  // CHECK-NEXT: br
  br bb3

bb3: 
  return undef : $()
}

// CHECK: sil @async_continuation_addr : $@convention(thin) @async () -> () {
sil @async_continuation_addr : $@async () -> () {
// CHECK-NEXT: bb
entry:
  // CHECK: [[SLOT:%.*]] = alloc_stack
  %a = alloc_stack $Builtin.Int32
  // CHECK-NEXT: [[CONT:%.*]] = get_async_continuation_addr Builtin.Int32, [[SLOT]] : $*Builtin.Int32
  %c = get_async_continuation_addr Builtin.Int32, %a : $*Builtin.Int32
  // CHECK-NEXT: // function_ref
  // CHECK-NEXT: function_ref
  %f = function_ref @not_async_test : $@convention(thin) () -> ()
  // CHECK-NEXT: apply
  apply %f() : $@convention(thin) () -> ()
  // CHECK-NEXT: await_async_continuation [[CONT]] : $Builtin.RawUnsafeContinuation, resume [[RESUME:bb[0-9]+]]
  await_async_continuation %c : $Builtin.RawUnsafeContinuation, resume bb1
  // CHECK-NEXT: {{^ *$}}
  // CHECK-NEXT: [[RESUME]]:
bb1:
  dealloc_stack %a : $*Builtin.Int32
  return undef : $()
}

// CHECK: sil @async_continuation_throws_addr : $@convention(thin) @async () -> () {
sil @async_continuation_throws_addr : $@async () -> () {
// CHECK-NEXT: bb
entry:
  // CHECK: [[SLOT:%.*]] = alloc_stack
  %a = alloc_stack $Builtin.Int32
  // CHECK-NEXT: [[CONT:%.*]] = get_async_continuation_addr [throws] Builtin.Int32, [[SLOT]] : $*Builtin.Int32
  %c = get_async_continuation_addr [throws] Builtin.Int32, %a : $*Builtin.Int32
  // CHECK-NEXT: // function_ref
  // CHECK-NEXT: function_ref
  %f = function_ref @not_async_test : $@convention(thin) () -> ()
  // CHECK-NEXT: apply
  apply %f() : $@convention(thin) () -> ()
  // CHECK-NEXT: await_async_continuation [[CONT]] : $Builtin.RawUnsafeContinuation, resume [[RESUME:bb[0-9]+]], error [[ERROR:bb[0-9]+]]
  await_async_continuation %c : $Builtin.RawUnsafeContinuation, resume bb1, error bb2
  // CHECK-NEXT: {{^ *$}}
  // CHECK-NEXT: [[RESUME]]:
bb1:
  // CHECK-NEXT: dealloc_stack
  dealloc_stack %a : $*Builtin.Int32
  // CHECK-NEXT: br
  br bb3
  // CHECK-NEXT: {{^ *$}}
  // CHECK-NEXT: [[ERROR]]([[EVALUE:%.*]] : $any Error):
bb2(%e : $Error):
  dealloc_stack %a : $*Builtin.Int32
  br bb3

bb3:
  return undef : $()
}