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351d9c5d57
We had this for some cast instructions, but not for cast instructions with address-types. Type dependent operands - like for dynamic self - are important for establishing a def-use relationship between the instruction/argument which defines the type and the instruction which uses the type. Missing those dependencies can cause instructions or the dynamic-self argument to be removed while the type is still used in a cast instruction. This change involved some class hierarchy gymnastics in SILInstruction.h. Fixes a compiler crash. rdar://problem/61816506
28 lines
956 B
Swift
28 lines
956 B
Swift
// RUN: %target-swift-frontend -module-name test -emit-sil -O %s | %FileCheck %s
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// Make sure IRGen does not crash
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// RUN: %target-swift-frontend -module-name test -emit-ir -O %s
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public class X {}
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@inline(never)
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func transform<T>(_ a: Any, c: (Any) -> T?) -> T? {
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return c(a)
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}
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// CHECK-LABEL: sil private @$s4test1XC6testityACSgypFACXDSgypXEfU_ : $@convention(thin) (@in_guaranteed Any, @thick @dynamic_self X.Type) -> @owned Optional<X> {
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// CHECK: bb0(%0 : $*Any, %1 : $@thick @dynamic_self X.Type):
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// The checked_cast_addr_br must have %1 as implicit type dependend operand.
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// CHECK: checked_cast_addr_br take_always Any in %{{[0-9]+}} : $*Any to @dynamic_self X in %{{[0-9]+}} : $*X, bb1, bb2 // type-defs: %1;
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// CHECK: } // end sil function '$s4test1XC6testityACSgypFACXDSgypXEfU_'
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extension X {
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public func testit(_ a: Any) -> X? {
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guard let xx = transform(a, c: { $0 as? Self }) else {
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return nil
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}
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return xx
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}
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}
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