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e5d87f75a8
It is necessary for opaque values where for casts that will newly start out as checked_cast_brs and be lowered to checked_cast_addr_brs, since the latter has the source formal type, IRGen relies on being able to access it, and there's no way in general to obtain the source formal type from the source lowered type.
78 lines
2.2 KiB
Plaintext
78 lines
2.2 KiB
Plaintext
// RUN: %target-sil-opt %s | %FileCheck %s
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sil_stage canonical
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import Builtin
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import Swift
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class Klass {
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}
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class SubKlass : Klass {
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}
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struct NonTrivialStruct {
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var id:Klass
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}
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// CHECK-LABEL: sil [ossa] @unchecked_ref_cast_test :
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sil [ossa] @unchecked_ref_cast_test : $@convention(thin) <T> (@in T, @owned Klass) -> () {
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bb0(%0 : $*T, %1 : @owned $Klass):
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destroy_addr %0 : $*T
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// CHECK: unchecked_ref_cast %1 : $Klass to $Optional<Klass>, forwarding: @unowned
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%3 = unchecked_ref_cast %1 : $Klass to $Optional<Klass>, forwarding: @unowned
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%4 = copy_value %3 : $Optional<Klass>
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destroy_value %1 : $Klass
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destroy_value %4 : $Optional<Klass>
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%8 = tuple ()
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return %8 : $()
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}
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// CHECK-LABEL: } // end sil function 'unchecked_ref_cast_test'
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// CHECK-LABEL: sil [ossa] @struct_test :
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sil [ossa] @struct_test : $@convention(thin) (@owned Klass) -> () {
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bb0(%0 : @owned $Klass):
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// CHECK-NOT: forwarding:
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%3 = struct $NonTrivialStruct (%0 : $Klass), forwarding: @owned
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destroy_value %3 : $NonTrivialStruct
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%8 = tuple ()
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return %8 : $()
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}
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// CHECK-LABEL: } // end sil function 'struct_test'
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// CHECK-LABEL: sil [ossa] @switch_test : $@convention(thin) () -> () {
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// CHECK: switch_enum {{.*}}, forwarding: @guaranteed
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// CHECK-LABEL: } // end sil function 'switch_test'
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sil [ossa] @switch_test : $@convention(thin) () -> () {
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%none = enum $Optional<Klass>, #Optional.none
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switch_enum %none : $Optional<Klass>, case #Optional.some!enumelt:bb1, case #Optional.none!enumelt:bb2, forwarding: @guaranteed
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bb1(%arg : @guaranteed $Klass):
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br bb3
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bb2:
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br bb3
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bb3:
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%8 = tuple ()
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return %8 : $()
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}
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// CHECK-LABEL: sil [ossa] @checked_cast_test : $@convention(thin) (@owned Klass) -> () {
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// CHECK: checked_cast_br {{.*}}, forwarding: @guaranteed
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// CHECK-LABEL: } // end sil function 'checked_cast_test'
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sil [ossa] @checked_cast_test : $@convention(thin) (@owned Klass) -> () {
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bb0(%0 : @owned $Klass):
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%trivial = unchecked_ownership_conversion %0 : $Klass, @owned to @none
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checked_cast_br Klass in %trivial : $Klass to SubKlass, bb1, bb2, forwarding: @guaranteed
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bb1(%arg1 : @guaranteed $SubKlass):
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br bb3
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bb2(%arg2: @guaranteed $Klass):
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br bb3
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bb3:
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destroy_value %0 : $Klass
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%8 = tuple ()
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return %8 : $()
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}
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