1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
// RUN: %target-sil-opt -enable-sil-verify-all %s -onone-simplification -simplify-instruction=unchecked_ref_cast | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ONONE
// RUN: %target-sil-opt -enable-sil-verify-all %s -simplification -simplify-instruction=unchecked_ref_cast | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-O
// REQUIRES: swift_in_compiler
import Swift
import Builtin
protocol P : AnyObject {}
class B : P {}
class X : B {}
// CHECK-LABEL: sil @test_non_ossa :
// CHECK: %0 = alloc_ref
// CHECK: unchecked_ref_cast %0 : $X
// CHECK: } // end sil function 'test_non_ossa'
sil @test_non_ossa : $@convention(thin) () -> X {
bb0:
%0 = alloc_ref $X
%1 = upcast %0 : $X to $B
%2 = init_existential_ref %1 : $B : $B, $AnyObject
%3 = unchecked_ref_cast %2 : $AnyObject to $X
return %3 : $X
}
// CHECK-LABEL: sil [ossa] @test_ossa :
// CHECK: %0 = alloc_ref
// CHECK-O-NEXT: unchecked_ref_cast %0 : $X
// CHECK-ONONE: unchecked_ref_cast %2 : $AnyObject
// CHECK: } // end sil function 'test_ossa'
sil [ossa] @test_ossa : $@convention(thin) () -> @owned X {
bb0:
%0 = alloc_ref $X
%1 = upcast %0 : $X to $B
%2 = init_existential_ref %1 : $B : $B, $AnyObject
debug_value %2 : $AnyObject, name "x"
%4 = unchecked_ref_cast %2 : $AnyObject to $X
return %4 : $X
}
// CHECK-LABEL: sil [ossa] @test_ossa_multiple_uses :
// CHECK: unchecked_ref_cast %1 : $B
// CHECK: } // end sil function 'test_ossa_multiple_uses'
sil [ossa] @test_ossa_multiple_uses : $@convention(thin) () -> @owned X {
bb0:
%0 = alloc_ref $X
%1 = upcast %0 : $X to $B
fix_lifetime %1 : $B
%3 = unchecked_ref_cast %1 : $B to $X
return %3 : $X
}
// CHECK-LABEL: sil [ossa] @test_borrow :
// CHECK: %1 = begin_borrow
// CHECK-NEXT: %2 = unchecked_ref_cast %1 : $X
// CHECK-NEXT: fix_lifetime %2
// CHECK: } // end sil function 'test_borrow'
sil [ossa] @test_borrow : $@convention(thin) () -> () {
bb0:
%0 = alloc_ref $X
%1 = begin_borrow %0 : $X
%2 = upcast %1 : $X to $B
%3 = init_existential_ref %2 : $B : $B, $P
%4 = unchecked_ref_cast %3 : $P to $X
fix_lifetime %4 : $X
end_borrow %1 : $X
destroy_value %0: $X
%8 = tuple ()
return %8 : $()
}
sil_vtable X {
}
|
