File: loadable_by_address_reg2mem.sil

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// RUN: %target-swift-frontend %s  -Xllvm -sil-print-after=loadable-address -import-objc-header %S/Inputs/large_c.h -c -o %t/t.o 2>&1 | %FileCheck %s

sil_stage canonical

import Builtin
import Swift

struct X {
  var x1 : Int
  var x2 : Int
  var x3 : Int
  var x4: Int
  var x5: Int
  var x6: Int
  var x7: Int
  var x8: Int
  var x9: Int
  var x10: Int
  var x11: Int
  var x12: Int
  var x13: Int
  var x14: Int
  var x15: Int
  var x16: Int
}

struct X2 {
  var x1 : Int
  var x2 : Int
  var x3 : Int
  var x4: Int
  var x5: Int
  var x6: Int
  var x7: Int
  var x8: Int
  var x9: Int
  var x10: Int
  var x11: Int
  var x12: Int
  var x13: Int
  var x14: Int
  var x15: Int
  var x16: Int
}

struct Y {
  var y1 : X
  var y2: X
}

class C1 {
}

sil_vtable C1 {
}

struct Small {
  var x1 : Int
}

// CHECK: sil @test1 : $@convention(thin) () -> () {
// CHECK: bb0:
// CHECK:   %0 = alloc_stack $Optional<X>
// CHECK:   %1 = alloc_stack $X
// CHECK:   %2 = alloc_stack $X
// CHECK:   %3 = alloc_stack $Optional<X>
// CHECK:   copy_addr [take] %2 to [init] %1 : $*X
// CHECK:   %5 = init_enum_data_addr %0 : $*Optional<X>, #Optional.some!enumelt
// CHECK:   copy_addr [take] %1 to [init] %5 : $*X
// CHECK:   inject_enum_addr %0 : $*Optional<X>, #Optional.some!enumelt
// CHECK:   copy_addr [take] %0 to [init] %3 : $*Optional<X>
// CHECK:   dealloc_stack %3 : $*Optional<X>
// CHECK:   dealloc_stack %2 : $*X
// CHECK:   dealloc_stack %1 : $*X
// CHECK:   dealloc_stack %0 : $*Optional<X>
// CHECK: } // end sil function 'test1'

sil @test1 : $@convention(thin) () -> () {
bb0:
  %0 = alloc_stack $X
  %1 = alloc_stack $Optional<X>
  %2 = load %0 : $*X
  %3 = enum $Optional<X>, #Optional.some!enumelt, %2 : $X
  store %3 to %1 : $*Optional<X>
  dealloc_stack %1 : $*Optional<X>
  dealloc_stack %0 : $*X
  %t = tuple ()
  return %t : $()
}

// CHECK: sil @test2 : $@convention(thin) () -> () {
// CHECK: bb0:
// CHECK:   %0 = alloc_stack $Optional<X>
// CHECK:   %1 = alloc_stack $Optional<X>
// CHECK:   %2 = alloc_stack $Optional<X>
// CHECK:   copy_addr [take] %2 to [init] %1 : $*Optional<X>
// CHECK:   copy_addr [take] %1 to [init] %0 : $*Optional<X>
// CHECK:   switch_enum_addr %0 : $*Optional<X>, case #Optional.some!enumelt: bb1, case #Optional.none!enumelt: bb2

// CHECK: bb1:
// CHECK:   %6 = unchecked_take_enum_data_addr %0 : $*Optional<X>, #Optional.some!enumelt
// CHECK:   br bb3

// CHECK: bb2:
// CHECK:   br bb3

// CHECK: bb3:
// CHECK:   dealloc_stack %2 : $*Optional<X>
// CHECK:   dealloc_stack %1 : $*Optional<X>
// CHECK:   dealloc_stack %0 : $*Optional<X>
// CHECK: } // end sil function 'test2'

sil @test2 : $@convention(thin) () -> () {
bb0:
  %1 = alloc_stack $Optional<X>
  %2 = load %1 : $*Optional<X>
  switch_enum %2 : $Optional<X>, case #Optional.some!enumelt: bb1, case #Optional.none!enumelt: bb2

bb1(%3: $X):
  br bb3

bb2:
  br bb3

bb3:
  dealloc_stack %1 : $*Optional<X>
  %t = tuple ()
  return %t : $()
}

// CHECK: sil @test3 : $@convention(thin) () -> Builtin.Int1 {
// CHECK: bb0:
// CHECK:   %0 = alloc_stack $Optional<X>
// CHECK:   %1 = alloc_stack $Optional<X>
// CHECK:   copy_addr [take] %1 to [init] %0 : $*Optional<X>
// CHECK:   %3 = integer_literal $Builtin.Int1, -1
// CHECK:   %4 = integer_literal $Builtin.Int1, 0
// CHECK:   %5 = select_enum_addr %0 : $*Optional<X>, case #Optional.some!enumelt: %3, case #Optional.none!enumelt: %4 : $Builtin.Int1
// CHECK:   dealloc_stack %1 : $*Optional<X>
// CHECK:   dealloc_stack %0 : $*Optional<X>
// CHECK:   return %5 : $Builtin.Int1
// CHECK: } // end sil function 'test3'

sil @test3 : $@convention(thin) () -> Builtin.Int1 {
bb0:
  %1 = alloc_stack $Optional<X>
  %2 = load %1 : $*Optional<X>
  %3 = integer_literal $Builtin.Int1, -1
  %4 = integer_literal $Builtin.Int1, 0
  %r = select_enum %2 : $Optional<X>, case #Optional.some!enumelt: %3, case #Optional.none!enumelt: %4 : $Builtin.Int1
  dealloc_stack %1 : $*Optional<X>
  return %r : $Builtin.Int1
}
// CHECK: sil @test4 : $@convention(thin) () -> () {
// CHECK: bb0:
// CHECK:   %0 = alloc_stack $(X, X)
// CHECK:   %1 = alloc_stack $X
// CHECK:   %2 = alloc_stack $X
// CHECK:   %3 = alloc_stack $(X, X)
// CHECK:   copy_addr [take] %2 to [init] %1 : $*X
// CHECK:   %5 = tuple_element_addr %0 : $*(X, X), 0
// CHECK:   copy_addr [take] %1 to [init] %5 : $*X
// CHECK:   %7 = tuple_element_addr %0 : $*(X, X), 1
// CHECK:   copy_addr [take] %1 to [init] %7 : $*X
// CHECK:   copy_addr [take] %0 to [init] %3 : $*(X, X)
// CHECK: } // end sil function 'test4'

sil @test4 : $@convention(thin) () -> () {
bb0:
  %0 = alloc_stack $X
  %1 = alloc_stack $(X, X)
  %2 = load %0 : $*X
  %3 = tuple (%2 : $X , %2 : $X)
  store %3 to %1 : $*(X, X)
  dealloc_stack %1 : $*(X,X)
  dealloc_stack %0 : $*X
  %t = tuple ()
  return %t : $()
}

// CHECK: sil @test5 : $@convention(thin) (@in (X, X)) -> () {
// CHECK: bb0(%0 : $*(X, X)):
// CHECK:   %1 = alloc_stack $(X, X)
// CHECK:   %2 = alloc_stack $X
// CHECK:   copy_addr [take] %0 to [init] %1 : $*(X, X)
// CHECK:   %4 = tuple_element_addr %1 : $*(X, X), 1
// CHECK:   copy_addr [take] %4 to [init] %2 : $*X
// CHECK: } // end sil function 'test5'

sil @test5 : $@convention(thin) (@in (X, X)) -> () {
bb0(%0 : $*(X, X)):
  %1 = alloc_stack $X
  %2 = load %0 : $*(X, X)
  %4 = tuple_extract %2 : $(X, X), 1
  store %4 to %1 : $*X
  dealloc_stack %1 : $*X
  %t = tuple ()
  return %t : $()
}

// CHECK: sil @test6 : $@convention(thin) () -> () {
// CHECK: bb0:
// CHECK:   %0 = alloc_stack $Y
// CHECK:   %1 = alloc_stack $X
// CHECK:   %2 = alloc_stack $X
// CHECK:   %3 = alloc_stack $Y
// CHECK:   copy_addr [take] %2 to [init] %1 : $*X
// CHECK:   %5 = struct_element_addr %0 : $*Y, #Y.y1
// CHECK:   copy_addr [take] %1 to [init] %5 : $*X
// CHECK:   %7 = struct_element_addr %0 : $*Y, #Y.y2
// CHECK:   copy_addr [take] %1 to [init] %7 : $*X
// CHECK:   copy_addr [take] %0 to [init] %3 : $*Y
// CHECK: } // end sil function 'test6'

sil @test6 : $@convention(thin) () -> () {
bb0:
  %0 = alloc_stack $X
  %1 = alloc_stack $Y
  %2 = load %0 : $*X
  %3 = struct $Y (%2 : $X , %2 : $X)
  store %3 to %1 : $*Y
  dealloc_stack %1 : $*Y
  dealloc_stack %0 : $*X
  %t = tuple ()
  return %t : $()
}

// CHECK: sil @test7 : $@convention(thin) (@in Y) -> () {
// CHECK: bb0(%0 : $*Y):
// CHECK:   %1 = alloc_stack $Y
// CHECK:   %2 = alloc_stack $X
// CHECK:   copy_addr [take] %0 to [init] %1 : $*Y
// CHECK:   %4 = struct_element_addr %1 : $*Y, #Y.y1
// CHECK:   copy_addr [take] %4 to [init] %2 : $*X
// CHECK: } // end sil function 'test7'

sil @test7 : $@convention(thin) (@in Y) -> () {
bb0(%0 : $*Y):
  %1 = alloc_stack $X
  %2 = load %0 : $*Y
  %4 = struct_extract %2 : $Y, #Y.y1
  store %4 to %1 : $*X
  dealloc_stack %1 : $*X
  %t = tuple ()
  return %t : $()
}

// CHECK: sil @test8
// CHECK: bb0(%0 : $SamplesType):
// CHECK:   %1 = alloc_stack $SamplesType
// CHECK:   store %0 to %1 : $*SamplesType
sil @helper : $@convention(thin) (SamplesType) -> ()

sil @test8 : $@convention(c) (SamplesType) -> () {
bb0(%0 : $SamplesType):
  %1 = function_ref @helper : $@convention(thin) (SamplesType) -> ()
  %2 = apply %1(%0) : $@convention(thin) (SamplesType) -> ()
  %t = tuple ()
  return %t : $()
}

// In this test case Container type is identified as not large but contained
// type is.
sil @test9 : $@convention(thin) () -> () {
bb0:
  %0 = alloc_stack $_ContainerType
  %1 = load %0 : $*_ContainerType
  %2 = alloc_stack $(_ContainedType, _ContainedType, _ContainedType, _ContainedType, _ContainedType,
                     _ContainedType, _ContainedType, _ContainedType, _ContainedType, _ContainedType)

  %3 = struct_extract %1 : $_ContainerType, #_ContainerType.l
  store %3 to %2 : $*(_ContainedType, _ContainedType, _ContainedType, _ContainedType, _ContainedType,
                     _ContainedType, _ContainedType, _ContainedType, _ContainedType, _ContainedType)
  dealloc_stack %2 : $*(_ContainedType, _ContainedType, _ContainedType, _ContainedType, _ContainedType,
                     _ContainedType, _ContainedType, _ContainedType, _ContainedType, _ContainedType)
  dealloc_stack %0 : $*_ContainerType
  %t = tuple ()
  return %t : $()
}

sil @test10 : $@convention(thin) (@in_guaranteed C1, @in Small) -> () {
bb0(%0 : $*C1, %1 : $*Small):
  %2 = load %1 : $*Small
  %3 = load %0 : $*C1
  retain_value %3 : $C1
  store %2 to %1 : $*Small
  retain_value %3 : $C1
  %t = tuple ()
  return %t : $()
}

// CHECK: sil @test13
// CHECK:  [[ADDR:%.*]] = unchecked_addr_cast %1 : $*X to $*Y
// CHECK:  copy_addr [take] [[ADDR]] to [init] %2 : $*Y
// CHECK: } // end sil function 'test13'
sil @test13 : $@convention(thin) (@in X) -> () {
bb0(%0 : $*X):
  %1 = alloc_stack $Y
  %2 = alloc_stack $X
  copy_addr [take] %0 to [init] %2 : $*X
  %4 = load %2 : $*X
  %7 = unchecked_bitwise_cast %4 : $X to $Y
  store %7 to %1: $*Y
  %13 = tuple ()
  dealloc_stack %2 : $*X
  dealloc_stack %1 : $*Y
  return %13 : $()
}

// CHECK: sil @test14
// CHECK:   [[VAL:%.*]] = load {{.*}} : $*X
// CHECK:   throw [[VAL]]
// CHECK: } // end sil function 'test14'
sil @test14 : $@convention(thin) (@in X) -> @error X {
bb0(%0 : $*X):
  %1 = alloc_stack $X
  copy_addr [take] %0 to [init] %1 : $*X
  %3 = load %1 : $*X
  dealloc_stack %1 : $*X
  throw %3 : $X
}