File: stack_nesting.sil

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// RUN: %target-sil-opt               \
// RUN:     -test-runner              \
// RUN:     -sil-disable-input-verify \
// RUN:     %s                        \
// RUN:     -o /dev/null              \
// RUN: 2>&1 | %FileCheck %s

import Builtin

sil @coro : $@convention(thin) @yield_once_2 <T> () -> (@yields @in_guaranteed T)

// CHECK-LABEL: begin running test {{.*}} on begin_apply_fixup: stack_nesting_fixup
// CHECK-LABEL: sil @begin_apply_fixup : $@convention(thin) <T> () -> () {
// CHECK:         [[STACK:%[^,]+]] = alloc_stack
// CHECK:         ({{%[^,]+}}, {{%[^,]+}}, [[ALLOCATION:%[^,]+]]) = begin_apply
// CHECK:         dealloc_stack [[ALLOCATION]]
// CHECK:         dealloc_stack [[STACK]]
// CHECK-LABEL: } // end sil function 'begin_apply_fixup'
// CHECK-LABEL: end running test {{.*}} on begin_apply_fixup: stack_nesting_fixup
sil @begin_apply_fixup : $@convention(thin) <T> () -> () {
entry:
  specify_test "stack_nesting_fixup"
  %stk = alloc_stack $T
  %coro = function_ref @coro : $@convention(thin) @yield_once_2 <T> () -> (@yields @in_guaranteed T)
  (%t, %token, %allocation) = begin_apply %coro<T>() : $@convention(thin) @yield_once_2 <T> () -> (@yields @in_guaranteed T) 
  end_apply %token as $()
  dealloc_stack %stk : $*T
  dealloc_stack %allocation : $*Builtin.SILToken
  %retval = tuple ()
  return %retval : $()
}