mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
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.
37 lines
954 B
Swift
37 lines
954 B
Swift
|
|
// RUN: %target-swift-frontend %s -parse-as-library -enable-spec-devirt -O -emit-sil | %FileCheck %s
|
|
// RUN: %target-swift-frontend %s -parse-as-library -Osize -emit-sil
|
|
//
|
|
// Test speculative devirtualization.
|
|
|
|
// REQUIRES: swift_in_compiler
|
|
|
|
public class Cat {
|
|
var cats: Int
|
|
|
|
required init(cats: Int) {
|
|
self.cats = cats
|
|
}
|
|
}
|
|
|
|
public class BigCat : Cat {
|
|
required init(cats: Int) {
|
|
super.init(cats: cats)
|
|
}
|
|
}
|
|
|
|
public func make(type: Cat.Type, cats: Int) -> Cat {
|
|
return type.init(cats: cats)
|
|
}
|
|
|
|
// CHECK-LABEL: sil @$s23devirt_speculative_init4make4type4catsAA3CatCAFm_SitF : $@convention(thin) (@thick Cat.Type, Int) -> @owned Cat {
|
|
// CHECK: checked_cast_br [exact] @thick Cat.Type in %0 : $@thick Cat.Type to @thick Cat.Type, bb2, bb3
|
|
// CHECK: bb1{{.*}}:
|
|
// CHECK: return
|
|
// CHECK: bb2({{%.*}} : $@thick Cat.Type):
|
|
// CHECK: alloc_ref $Cat
|
|
// CHECK: br bb1
|
|
// CHECK: bb3:
|
|
// CHECK: alloc_ref $BigCat
|
|
// CHECK: br bb1
|