Files
swift-mirror/test/SILOptimizer/mandatory_performance_optimizations.sil
Erik Eckstein 6dde4c942e MandatoryPerformanceOptimizations: force de-virtualizing value-type deinits
Do this even if the function then contains references to other functions with wrong linkage.
MandatoryPerformanceOptimization fixes the linkage afterwards.
This is similar to what we already do with de-virtualizing class and witness methods: https://github.com/swiftlang/swift/pull/76032

rdar://168171608
2026-02-02 19:36:48 +01:00

412 lines
20 KiB
Plaintext

// RUN: %target-sil-opt -sil-print-types -enable-sil-verify-all %s -mandatory-performance-optimizations -enable-experimental-feature Lifetimes | %FileCheck %s
// REQUIRES: swift_in_compiler
// REQUIRES: swift_feature_Lifetimes
sil_stage canonical
import Builtin
import Swift
import SwiftShims
struct NonTrivialStruct {
var s: String
}
struct S6: ~Copyable {
deinit
}
sil_global [let] @g1 : $Int32
sil_global [let] @g2 : $Int32
sil_global [let] @g3 : $Int32
sil @paable : $@convention(thin) (Builtin.Int64) -> ()
sil @moved_pai_callee : $@convention(thin) (@inout_aliasable Builtin.Int64) -> ()
sil @use_closure : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
sil [ossa] [transparent] @partial_apply_on_stack_nesting_violator : $@convention(thin) <T> () -> () {
%paable = function_ref @paable : $@convention(thin) (Builtin.Int64) -> ()
%one = integer_literal $Builtin.Int64, 1
%first = partial_apply [callee_guaranteed] [on_stack] %paable(%one) : $@convention(thin) (Builtin.Int64) -> ()
%two = integer_literal $Builtin.Int64, 2
%second = partial_apply [callee_guaranteed] [on_stack] %paable(%two) : $@convention(thin) (Builtin.Int64) -> ()
%f = function_ref @use_closure : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
apply %f(%first) : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
apply %f(%second) : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
// Note that the destroy_values do not occur in an order which coincides
// with stack disciplined dealloc_stacks.
destroy_value %first : $@noescape @callee_guaranteed () -> ()
destroy_value %second : $@noescape @callee_guaranteed () -> ()
%retval = tuple ()
return %retval : $()
}
// Verify that when inlining partial_apply_on_stack_nesting_violator, the stack
// nesting of the on_stack closures is fixed.
//
// NON_OSSA: stack nesting is not fixed until after OSSA lowering. These tests only run mandatory optimization.
//
// CHECK-LABEL: sil [no_locks] [perf_constraint] [ossa] @test_inline_stack_violating_ossa_func : {{.*}} {
// CHECK: [[PAABLE:%[^,]+]] = function_ref @paable
// CHECK: [[FIRST:%[^,]+]] = partial_apply [callee_guaranteed] [on_stack] [[PAABLE]]
// CHECK: [[SECOND:%[^,]+]] = partial_apply [callee_guaranteed] [on_stack] [[PAABLE]]
// NON_OSSA: dealloc_stack [[SECOND]]
// NON_OSSA: dealloc_stack [[FIRST]]
// CHECK-LABEL: } // end sil function 'test_inline_stack_violating_ossa_func'
sil [no_locks] [ossa] @test_inline_stack_violating_ossa_func : $@convention(thin) () -> () {
%callee = function_ref @partial_apply_on_stack_nesting_violator : $@convention(thin) <T> () -> ()
apply %callee<Builtin.Int64>() : $@convention(thin) <T> () -> ()
%retval = tuple ()
return %retval : $()
}
// CHECK-LABEL: sil hidden [no_allocation] [perf_constraint] [ossa] @moved_pai : {{.*}} {
// CHECK-NOT: partial_apply
// CHECK-LABEL: } // end sil function 'moved_pai'
sil hidden [no_allocation] [ossa] @moved_pai : $@convention(thin) () -> Builtin.Int64 {
bb0:
%addr = alloc_stack $Builtin.Int64
%42 = integer_literal $Builtin.Int64, 42
store %42 to [trivial] %addr : $*Builtin.Int64
%callee = function_ref @moved_pai_callee : $@convention(thin) (@inout_aliasable Builtin.Int64) -> ()
%closure = partial_apply [callee_guaranteed] %callee(%addr) : $@convention(thin) (@inout_aliasable Builtin.Int64) -> ()
%closure_lifetime = move_value [lexical] %closure : $@callee_guaranteed () -> ()
debug_value %closure_lifetime : $@callee_guaranteed () -> ()
%copy = copy_value %closure_lifetime : $@callee_guaranteed () -> ()
apply %copy() : $@callee_guaranteed () -> ()
destroy_value %copy : $@callee_guaranteed () -> ()
%retval = load [trivial] %addr : $*Builtin.Int64
destroy_value %closure_lifetime : $@callee_guaranteed () -> ()
dealloc_stack %addr : $*Builtin.Int64
return %retval : $Builtin.Int64
}
// CHECK-LABEL: sil [no_allocation] [perf_constraint] [ossa] @deserialize_and_inline_after_devirtualize
// CHECK-NOT: apply
// CHECK: } // end sil function 'deserialize_and_inline_after_devirtualize'
sil [no_allocation] [ossa] @deserialize_and_inline_after_devirtualize : $@convention(thin) (@in Int) -> () {
bb0(%0 : $*Int):
%1 = metatype $@thick Int.Type
%2 = witness_method $Int, #Comparable."<" : <Self where Self : Comparable, Self : ~Copyable, Self : ~Escapable> (Self.Type) -> (borrowing Self, borrowing Self) -> Bool : $@convention(witness_method: Comparable) <τ_0_0 where τ_0_0 : Comparable> (@in_guaranteed τ_0_0, @in_guaranteed τ_0_0, @thick τ_0_0.Type) -> Bool
%3 = apply %2<Int>(%0, %0, %1) : $@convention(witness_method: Comparable) <τ_0_0 where τ_0_0 : Comparable> (@in_guaranteed τ_0_0, @in_guaranteed τ_0_0, @thick τ_0_0.Type) -> Bool
%4 = tuple()
return %4 : $()
}
// CHECK-LABEL: sil [no_allocation] [perf_constraint] [ossa] @memopt_and_dead_alloc
// CHECK-NOT: alloc_stack
// CHECK-NOT: load
// CHECK: return %0
// CHECK: } // end sil function 'memopt_and_dead_alloc'
sil [no_allocation] [ossa] @memopt_and_dead_alloc : $@convention(thin) (Builtin.Int32) -> Builtin.Int32 {
bb0(%0 : $Builtin.Int32):
%1 = alloc_stack $Builtin.Int32
store %0 to [trivial] %1 : $*Builtin.Int32
%2 = load [trivial] %1 : $*Builtin.Int32
dealloc_stack %1 : $*Builtin.Int32
return %2 : $Builtin.Int32
}
// CHECK-LABEL: sil [no_allocation] [perf_constraint] [ossa] @dead_metatype :
// CHECK-NOT: metatype
// CHECK-NOT: debug_value
// CHECK: } // end sil function 'dead_metatype'
sil [no_allocation] [ossa] @dead_metatype : $@convention(thin) () -> () {
bb0:
%0 = metatype $@thick Int.Type
debug_value %0 : $@thick Int.Type
%2 = tuple ()
return %2 : $()
}
sil shared [ossa] [transparent] [serialized] [thunk] [canonical] @$sSiSLsSL1loiySbx_xtFZTW : $@convention(witness_method: Comparable) (@in_guaranteed Int, @in_guaranteed Int, @thick Int.Type) -> Bool {
bb0(%0 : $*Int, %1 : $*Int, %2 : $@thick Int.Type):
%3 = integer_literal $Builtin.Int1, 0
%4 = struct $Bool (%3 : $Builtin.Int1)
return %4 : $Bool
}
sil_witness_table public_external [serialized] Int: Comparable module Swift {
base_protocol Equatable: Int: Equatable module Swift
method #Comparable."<": <Self where Self : Comparable, Self : ~Copyable, Self : ~Escapable> (Self.Type) -> (borrowing Self, borrowing Self) -> Bool : @$sSiSLsSL1loiySbx_xtFZTW
}
sil [ossa] @get_int_value : $@convention(thin) () -> Int32 {
bb0:
%0 = integer_literal $Builtin.Int32, 10
%1 = struct $Int32 (%0 : $Builtin.Int32)
return %1 : $Int32
}
// CHECK-LABEL: sil [global_init_once_fn] [no_locks] [perf_constraint] [ossa] @globalinit_inline_into_init :
// CHECK-NOT: apply
// CHECK: } // end sil function 'globalinit_inline_into_init'
sil [global_init_once_fn] [no_locks] [ossa] @globalinit_inline_into_init : $@convention(c) () -> () {
bb0:
alloc_global @g1
%1 = global_addr @g1 : $*Int32
%2 = function_ref @get_int_value : $@convention(thin) () -> Int32
%3 = apply %2() : $@convention(thin) () -> Int32
store %3 to [trivial] %1 : $*Int32
%6 = tuple ()
return %6 : $()
}
// CHECK-LABEL: sil [serialized] [global_init_once_fn] [no_locks] [perf_constraint] [ossa] @globalinit_dont_inline_non_inlinable_into_inlinable :
// CHECK: apply
// CHECK: } // end sil function 'globalinit_dont_inline_non_inlinable_into_inlinable'
sil [serialized] [global_init_once_fn] [no_locks] [ossa] @globalinit_dont_inline_non_inlinable_into_inlinable : $@convention(c) () -> () {
bb0:
alloc_global @g2
%1 = global_addr @g2 : $*Int32
%2 = function_ref @get_int_value : $@convention(thin) () -> Int32
%3 = apply %2() : $@convention(thin) () -> Int32
store %3 to [trivial] %1 : $*Int32
%6 = tuple ()
return %6 : $()
}
// CHECK-LABEL: sil [global_init_once_fn] [no_locks] [perf_constraint] [ossa] @remove_loads_and_stores_in_globalinit :
// CHECK-NOT: store
// CHECK: debug_step
// CHECK-NOT: load
// CHECK: } // end sil function 'remove_loads_and_stores_in_globalinit'
sil [global_init_once_fn] [no_locks] [ossa] @remove_loads_and_stores_in_globalinit : $@convention(c) () -> () {
bb0:
alloc_global @g3
%1 = global_addr @g3 : $*Int32
%2 = integer_literal $Builtin.Int32, 10
%3 = struct $Int32 (%2)
store %3 to [trivial] %1
debug_step
%6 = load [trivial] %1
store %6 to [trivial] %1
%r = tuple ()
return %r
}
// Check that we don't crash on global init-once declarations.
// CHECK-LABEL: sil [global_init_once_fn] [no_locks] @external_global_init_once : $@convention(c) () -> ()
sil [global_init_once_fn] [no_locks] [ossa] @external_global_init_once : $@convention(c) () -> ()
sil [ossa] @yield_int_value : $@convention(thin) @yield_once () -> (@yields Int32) {
bb0:
%0 = integer_literal $Builtin.Int32, 10
%1 = struct $Int32 (%0 : $Builtin.Int32)
yield %1 : $Int32, resume bb1, unwind bb2
bb1:
%3 = tuple ()
return %3 : $()
bb2:
unwind
}
// CHECK-LABEL: sil [no_locks] [perf_constraint] [ossa] @inline_begin_apply :
// CHECK-NOT: begin_apply
// CHECK: } // end sil function 'inline_begin_apply'
sil [no_locks] [ossa] @inline_begin_apply : $@convention(thin) () -> Int32 {
bb0:
%0 = function_ref @yield_int_value : $@convention(thin) @yield_once () -> (@yields Int32)
(%1, %2) = begin_apply %0() : $@convention(thin) @yield_once () -> (@yields Int32)
end_apply %2 as $()
return %1 : $Int32
}
// CHECK-LABEL: sil [no_locks] [perf_constraint] [ossa] @dont_inline_begin_apply :
// CHECK: begin_apply
// CHECK: } // end sil function 'dont_inline_begin_apply'
sil [no_locks] [ossa] @dont_inline_begin_apply : $@convention(thin) () -> Int32 {
bb0:
%0 = function_ref @yield_int_value : $@convention(thin) @yield_once () -> (@yields Int32)
(%1, %2) = begin_apply %0() : $@convention(thin) @yield_once () -> (@yields Int32)
cond_br undef, bb1, bb2
bb1:
end_apply %2 as $()
br bb3
bb2:
end_apply %2 as $()
br bb3
bb3:
return %1 : $Int32
}
sil @createNonTrivialStruct : $@convention(thin) (Int) -> @owned NonTrivialStruct
// CHECK-LABEL: sil [no_allocation] [perf_constraint] [ossa] @test_dead_alloc_elimination_with_mark_dependence :
// CHECK-NOT: alloc_stack
// CHECK: } // end sil function 'test_dead_alloc_elimination_with_mark_dependence'
sil [ossa] [no_allocation] @test_dead_alloc_elimination_with_mark_dependence : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
%1 = alloc_stack [lexical] $Int
store %0 to [trivial] %1
%4 = load [trivial] %1
%5 = function_ref @createNonTrivialStruct : $@convention(thin) (Int) -> @owned NonTrivialStruct
%6 = apply %5(%4) : $@convention(thin) (Int) -> @owned NonTrivialStruct
%7 = mark_dependence [nonescaping] %6 on %1
%9 = mark_dependence [nonescaping] %7 on %1
%10 = destructure_struct %9
destroy_value %10
%12 = tuple ()
dealloc_stack %1
return %12
}
// CHECK-LABEL: sil [serialized] [no_allocation] [perf_constraint] [ossa] @devirtualze_hidden_deinit :
// CHECK: function_ref @s6_deinit
// CHECK-NEXT: apply
// CHECK: } // end sil function 'devirtualze_hidden_deinit'
sil [serialized] [no_allocation] [ossa] @devirtualze_hidden_deinit : $@convention(thin) (@owned S6) -> () {
bb0(%0 : @owned $S6):
destroy_value %0
%r = tuple()
return %r
}
// CHECK-LABEL: sil [perf_constraint] [ossa] @s6_deinit :
sil hidden [ossa] @s6_deinit : $@convention(method) (@owned S6) -> () {
bb0(%0 : @owned $S6):
end_lifetime %0
%r = tuple ()
return %r
}
// CHECK-LABEL: sil [no_locks] [perf_constraint] [ossa] @remove_metatype_arg :
// CHECK: [[F:%.*]] = function_ref @$s12metatype_argTf4ndn_n : $@convention(thin) (Int, @owned Builtin.NativeObject) -> @owned Builtin.NativeObject
// CHECK: [[A:%.*]] = apply [[F]](%0, %1) : $@convention(thin) (Int, @owned Builtin.NativeObject) -> @owned Builtin.NativeObject
// CHECK: return [[A]]
// CHECK: } // end sil function 'remove_metatype_arg'
sil [no_locks] [ossa] @remove_metatype_arg : $@convention(thin) (Int, @owned Builtin.NativeObject) -> @owned Builtin.NativeObject {
bb0(%0 : $Int, %1 : @owned $Builtin.NativeObject):
%3 = metatype $@thick Int.Type
%7 = function_ref @metatype_arg : $@convention(thin) (Int, @thick Int.Type, @owned Builtin.NativeObject) -> @owned Builtin.NativeObject
%8 = apply %7(%0, %3, %1) : $@convention(thin) (Int, @thick Int.Type, @owned Builtin.NativeObject) -> @owned Builtin.NativeObject
return %8 : $Builtin.NativeObject
}
// CHECK-LABEL: sil [signature_optimized_thunk] [ossa] @metatype_arg :
sil [ossa] @metatype_arg : $@convention(thin) (Int, @thick Int.Type, @owned Builtin.NativeObject) -> @owned Builtin.NativeObject {
bb0(%0 : $Int, %1 : $@thick Int.Type, %2 : @owned $Builtin.NativeObject):
fix_lifetime %1 : $@thick Int.Type
return %2 : $Builtin.NativeObject
}
sil [no_locks] [perf_constraint] [ossa] @dont_remove_metatype_arg_lifetime : $@convention(thin) (Int, UnsafeRawPointer) -> @lifetime(borrow 1) Span<Int> {
bb0(%0 : $Int, %1 : $UnsafeRawPointer):
%3 = metatype $@thick Int.Type
%7 = function_ref @metatype_arg_lifetime : $@convention(thin) (Int, @thick Int.Type, UnsafeRawPointer) -> @lifetime(borrow 2) Span<Int>
%8 = apply %7(%0, %3, %1) : $@convention(thin) (Int, @thick Int.Type, UnsafeRawPointer) -> @lifetime(borrow 2) Span<Int>
return %8
}
sil [ossa] @get_span : $@convention(thin) (UnsafeRawPointer) -> @lifetime(borrow 0) Span<Int>
// CHECK-NOT: sil [signature_optimized_thunk] [ossa] @metatype_arg_lifetime :
sil [ossa] @metatype_arg_lifetime : $@convention(thin) (Int, @thick Int.Type, UnsafeRawPointer) -> @lifetime(borrow 2) Span<Int> {
bb0(%0 : $Int, %1 : $@thick Int.Type, %2 : $UnsafeRawPointer):
fix_lifetime %1 : $@thick Int.Type
%3 = function_ref @get_span : $@convention(thin) (UnsafeRawPointer) -> @lifetime(borrow 0) Span<Int>
%4 = apply %3(%2) : $@convention(thin) (UnsafeRawPointer) -> @lifetime(borrow 0) Span<Int>
return %4
}
sil [no_locks] [perf_constraint] [ossa] @can_remove_metatype_arg_lifetime : $@convention(thin) (Int, UnsafeRawPointer) -> @lifetime(borrow 1) Span<Int> {
bb0(%0 : $Int, %1 : $UnsafeRawPointer):
%3 = metatype $@thick Int.Type
%7 = function_ref @metatype_arg_lifetime_opt : $@convention(thin) (UnsafeRawPointer, Int, @thick Int.Type) -> @lifetime(borrow 0) Span<Int>
%8 = apply %7(%1, %0, %3) : $@convention(thin) (UnsafeRawPointer, Int, @thick Int.Type) -> @lifetime(borrow 0) Span<Int>
return %8
}
// CHECK: sil [signature_optimized_thunk] [ossa] @metatype_arg_lifetime_opt :
sil [ossa] @metatype_arg_lifetime_opt : $@convention(thin) (UnsafeRawPointer, Int, @thick Int.Type) -> @lifetime(borrow 0) Span<Int> {
bb0(%2 : $UnsafeRawPointer, %0 : $Int, %1 : $@thick Int.Type):
fix_lifetime %1 : $@thick Int.Type
%3 = function_ref @get_span : $@convention(thin) (UnsafeRawPointer) -> @lifetime(borrow 0) Span<Int>
%4 = apply %3(%2) : $@convention(thin) (UnsafeRawPointer) -> @lifetime(borrow 0) Span<Int>
return %4
}
sil [no_locks] [perf_constraint] [ossa] @dont_remove_metatype_arg_lifetime_inout : $@convention(thin) (Int, @lifetime(copy 2) @inout MutableSpan<Int>, @owned MutableSpan<Int>) -> () {
bb0(%0 : $Int, %1 : $*MutableSpan<Int>, %2 : @owned $MutableSpan<Int>):
%3 = metatype $@thick Int.Type
%7 = function_ref @metatype_arg_lifetime_inout : $@convention(thin) (Int, @thick Int.Type, @lifetime(copy 3) @inout MutableSpan<Int>, @owned MutableSpan<Int>) -> ()
%8 = apply %7(%0, %3, %1, %2) : $@convention(thin) (Int, @thick Int.Type, @lifetime(copy 3) @inout MutableSpan<Int>, @owned MutableSpan<Int>) -> ()
%r = tuple ()
return %r
}
// CHECK-NOT: sil [signature_optimized_thunk] [ossa] @metatype_arg_lifetime_inout :
sil [ossa] @metatype_arg_lifetime_inout : $@convention(thin) (Int, @thick Int.Type, @lifetime(copy 3) @inout MutableSpan<Int>, @owned MutableSpan<Int>) -> () {
bb0(%0 : $Int, %1 : $@thick Int.Type, %2 : $*MutableSpan<Int>, %3 : @owned $MutableSpan<Int>):
fix_lifetime %1 : $@thick Int.Type
destroy_value %3
%r = tuple ()
return %r
}
sil [no_locks] [perf_constraint] [ossa] @dont_remove_metatype_arg_lifetime_inout_source : $@convention(thin) (Int, @lifetime(copy 2) @inout MutableSpan<Int>, @owned MutableSpan<Int>) -> () {
bb0(%0 : $Int, %1 : $*MutableSpan<Int>, %2 : @owned $MutableSpan<Int>):
%3 = metatype $@thick Int.Type
%7 = function_ref @metatype_arg_lifetime_inout_source : $@convention(thin) (@lifetime(copy 3) @inout MutableSpan<Int>, Int, @thick Int.Type, @owned MutableSpan<Int>) -> ()
%8 = apply %7(%1, %0, %3, %2) : $@convention(thin) (@lifetime(copy 3) @inout MutableSpan<Int>, Int, @thick Int.Type, @owned MutableSpan<Int>) -> ()
%r = tuple ()
return %r
}
// CHECK-NOT: sil [signature_optimized_thunk] [ossa] @metatype_arg_lifetime_inout_source :
sil [ossa] @metatype_arg_lifetime_inout_source : $@convention(thin) (@lifetime(copy 3) @inout MutableSpan<Int>, Int, @thick Int.Type, @owned MutableSpan<Int>) -> () {
bb0(%2 : $*MutableSpan<Int>, %0 : $Int, %1 : $@thick Int.Type, %3 : @owned $MutableSpan<Int>):
fix_lifetime %1 : $@thick Int.Type
destroy_value %3
%r = tuple ()
return %r
}
// CHECK-LABEL: sil [no_locks] [perf_constraint] [ossa] @remove_metatype_arg_throws :
// CHECK: [[F:%.*]] = function_ref @$s19metatype_arg_throwsTf4ndn_n : $@convention(thin) (Int, @owned Builtin.NativeObject) -> (@owned Builtin.NativeObject, @error any Error)
// CHECK: try_apply [[F]](%0, %1) : $@convention(thin) (Int, @owned Builtin.NativeObject) -> (@owned Builtin.NativeObject, @error any Error), normal bb1, error bb2
// CHECK: bb1([[R:%.*]] : @owned $Builtin.NativeObject):
// CHECK: return [[R]]
// CHECK: bb2([[E:%.*]] : @owned $any Error):
// CHECK: throw [[E]] : $any Error
// CHECK: } // end sil function 'remove_metatype_arg_throws'
sil [no_locks] [ossa] @remove_metatype_arg_throws : $@convention(thin) (Int, @owned Builtin.NativeObject) -> (@owned Builtin.NativeObject, @error any Error) {
bb0(%0 : $Int, %1 : @owned $Builtin.NativeObject):
%3 = metatype $@thick Int.Type
%4 = function_ref @metatype_arg_throws : $@convention(thin) (Int, @thick Int.Type, @owned Builtin.NativeObject) -> (@owned Builtin.NativeObject, @error any Error)
try_apply %4(%0, %3, %1) : $@convention(thin) (Int, @thick Int.Type, @owned Builtin.NativeObject) -> (@owned Builtin.NativeObject, @error any Error), normal bb1, error bb2
bb1(%10 : @owned $Builtin.NativeObject):
return %10 : $Builtin.NativeObject
bb2(%13 : @owned $any Error):
throw %13 : $any Error
}
// CHECK-LABEL: sil [signature_optimized_thunk] [ossa] @metatype_arg_throws :
sil [ossa] @metatype_arg_throws : $@convention(thin) (Int, @thick Int.Type, @owned Builtin.NativeObject) -> (@owned Builtin.NativeObject, @error any Error) {
bb0(%0 : $Int, %1 : $@thick Int.Type, %2 : @owned $Builtin.NativeObject):
fix_lifetime %1 : $@thick Int.Type
return %2 : $Builtin.NativeObject
}
// CHECK-LABEL: sil [perf_constraint] [ossa] @$s19metatype_arg_throwsTf4ndn_n : $@convention(thin) (Int, @owned Builtin.NativeObject) -> (@owned Builtin.NativeObject, @error any Error) {
// CHECK: bb0(%0 : $Int, %1 : @owned $Builtin.NativeObject):
// CHECK: %2 = metatype $@thick Int.Type
// CHECK: fix_lifetime %2 : $@thick Int.Type
// CHECK: return %1 : $Builtin.NativeObject
// CHECK: } // end sil function '$s19metatype_arg_throwsTf4ndn_n'
// CHECK-LABEL: sil [perf_constraint] [ossa] @$s12metatype_argTf4ndn_n : $@convention(thin) (Int, @owned Builtin.NativeObject) -> @owned Builtin.NativeObject {
// CHECK: bb0(%0 : $Int, %1 : @owned $Builtin.NativeObject):
// CHECK: %2 = metatype $@thick Int.Type
// CHECK: fix_lifetime %2 : $@thick Int.Type
// CHECK: return %1 : $Builtin.NativeObject
// CHECK: } // end sil function '$s12metatype_argTf4ndn_n'
sil_moveonlydeinit S6 {
@s6_deinit
}