swift-mirror/test/SILOptimizer/pruned_liveness_boundary.sil

// RUN: %target-sil-opt -test-runner %s 2>&1 | %FileCheck %s

// CHECK: begin running test 1 of {{[^,]+}} on last_uses_merge_points: dump_function
// CHECK: [[REGISTER_3:%[^,]+]] = tuple ()
// CHECK: return [[REGISTER_3]]
// CHECK: end running test 1 of {{[^,]+}} on last_uses_merge_points: dump_function
// CHECK: begin running test 2 of {{[^,]+}} on last_uses_merge_points: pruned_liveness_boundary_with_list_of_last_users_insertion_points
// CHECK: [[REGISTER_3]] = tuple ()
// CHECK: end running test 2 of {{[^,]+}} on last_uses_merge_points: pruned_liveness_boundary_with_list_of_last_users_insertion_points
sil [ossa] @last_uses_merge_points : $@convention(thin) () -> () {
entry:
  specify_test "dump_function"
  specify_test "pruned_liveness_boundary_with_list_of_last_users_insertion_points @block[1].instruction[0] @block[2].instruction[0]"
  cond_br undef, left, right
left:
  br bottom
right:
  br bottom
bottom:
  %retval = tuple ()
  return %retval : $()
}

struct S {}


// CHECK-LABEL: begin running test {{.*}} on nonuse_then_nonuse_is_nonuse
// CHECK:       non-user:   %1 = tuple ()
// CHECK-LABEL: end running test {{.*}} on nonuse_then_nonuse_is_nonuse
sil [ossa] @nonuse_then_nonuse_is_nonuse : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction non-use
      @instruction non-use
  """
  %retval = tuple ()
  return %retval : $()
}

// CHECK-LABEL: begin running test 1 of 1 on nonuse_then_ending_is_ending
// CHECK:       lifetime-ending user:   %1 = tuple ()
// CHECK-LABEL: end running test 1 of 1 on nonuse_then_ending_is_ending
sil [ossa] @nonuse_then_ending_is_ending : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction non-use
      @instruction ending
  """
  %retval = tuple ()
  return %retval : $()
}

// CHECK-LABEL: begin running test 1 of 1 on nonuse_then_nonending_is_nonending
// CHECK:       regular user:   %1 = tuple ()
// CHECK-LABEL: end running test 1 of 1 on nonuse_then_nonending_is_nonending
sil [ossa] @nonuse_then_nonending_is_nonending : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction non-use
      @instruction non-ending
  """
  %retval = tuple ()
  return %retval : $()
}

// CHECK-LABEL: begin running test {{.*}} on ending_then_nonuse_is_ending
// CHECK:       lifetime-ending user:   %1 = tuple ()
// CHECK-LABEL: end running test {{.*}} on ending_then_nonuse_is_ending
sil [ossa] @ending_then_nonuse_is_ending : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction ending
      @instruction non-use
  """
  %retval = tuple ()
  return %retval : $()
}

// CHECK-LABEL: begin running test 1 of 1 on ending_then_ending_is_ending
// CHECK:       lifetime-ending user:   %1 = tuple ()
// CHECK-LABEL: end running test 1 of 1 on ending_then_ending_is_ending
sil [ossa] @ending_then_ending_is_ending : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction ending
      @instruction ending
  """
  %retval = tuple ()
  return %retval : $()
}

// CHECK-LABEL: begin running test 1 of 1 on ending_then_nonending_is_nonending
// CHECK:       regular user:   %1 = tuple ()
// CHECK-LABEL: end running test 1 of 1 on ending_then_nonending_is_nonending
sil [ossa] @ending_then_nonending_is_nonending : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction ending
      @instruction non-ending
  """
  %retval = tuple ()
  return %retval : $()
}

// CHECK-LABEL: begin running test {{.*}} on nonending_then_nonuse_is_nonending
// CHECK:       regular user:   %1 = tuple ()
// CHECK-LABEL: end running test {{.*}} on nonending_then_nonuse_is_nonending
sil [ossa] @nonending_then_nonuse_is_nonending : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction non-ending
      @instruction non-use
  """
  %retval = tuple ()
  return %retval : $()
}

// CHECK-LABEL: begin running test 1 of 1 on nonending_then_ending_is_nonending
// CHECK:       regular user:   %1 = tuple ()
// CHECK-LABEL: end running test 1 of 1 on nonending_then_ending_is_nonending
sil [ossa] @nonending_then_ending_is_nonending : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction non-ending
      @instruction ending
  """
  %retval = tuple ()
  return %retval : $()
}

// CHECK-LABEL: begin running test 1 of 1 on nonending_then_nonending_is_nonending
// CHECK:       regular user:   %1 = tuple ()
// CHECK-LABEL: end running test 1 of 1 on nonending_then_nonending_is_nonending
sil [ossa] @nonending_then_nonending_is_nonending : $@convention(thin) () -> () {
  %val = apply undef() : $@convention(thin) () -> (S)
  specify_test """
    ssa_use_liveness
    %val
    uses:
      @instruction non-ending
      @instruction non-ending
  """
  %retval = tuple ()
  return %retval : $()
}