mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
4858cb6225
The use of 'nocapture' for parameters and return values is incorrect for C++ types, as they can actually capture a pointer into its own value (e.g. std::string in libstdc++) rdar://115062687
52 lines
2.3 KiB
Swift
52 lines
2.3 KiB
Swift
// RUN: %empty-directory(%t)
|
|
// RUN: %target-swift-frontend -emit-module -enable-library-evolution -emit-module-path=%t/resilient_protocol.swiftmodule -module-name=resilient_protocol %S/../Inputs/resilient_protocol.swift
|
|
// RUN: %target-swift-frontend -I %t -emit-ir -enable-library-evolution %s | %FileCheck %s -DINT=i%target-ptrsize
|
|
// RUN: %target-swift-frontend -I %t -emit-ir -enable-library-evolution -O %s
|
|
|
|
import resilient_protocol
|
|
|
|
@_fixed_layout public protocol FrozenProtocol {
|
|
func protocolMethod()
|
|
}
|
|
|
|
public func callOtherProtocolMethod<T : OtherFrozenProtocol>(_ t: T) {
|
|
t.protocolMethod()
|
|
}
|
|
|
|
public struct ConformsToFrozenProtocol : FrozenProtocol {
|
|
public func protocolMethod() {}
|
|
}
|
|
|
|
// CHECK-LABEL: @"$s16frozen_protocols24ConformsToFrozenProtocolVAA0eF0AAMc" = {{(dllexport )?}}{{(protected )?}}constant %swift.protocol_conformance_descriptor
|
|
|
|
// -- the protocol
|
|
// CHECK-SAME: @"$s16frozen_protocols14FrozenProtocolMp"
|
|
|
|
// -- the conforming type
|
|
// CHECK-SAME: @"$s16frozen_protocols24ConformsToFrozenProtocolVMn"
|
|
|
|
// -- the witness table
|
|
// CHECK-SAME: @"$s16frozen_protocols24ConformsToFrozenProtocolVAA0eF0AAWP"
|
|
|
|
// -- flags
|
|
// CHECK-SAME: i32 0
|
|
// CHECK-SAME: }
|
|
|
|
// @_fixed_layout protocols still emit protocol requirement descriptors though,
|
|
// which allows for a protocol to be retroactively declared as @_fixed_layout
|
|
// CHECK-LABEL: @"$s16frozen_protocols14FrozenProtocolP14protocolMethodyyFTq" = {{(dllexport )?}}{{(protected )?}}alias %swift.protocol_requirement
|
|
|
|
// Requirements in @_fixed_layout protocols are called by direct witness
|
|
// table lookup
|
|
|
|
// CHECK-LABEL: define{{( dllexport)?}}{{( protected)?}} swiftcc void @"$s16frozen_protocols23callOtherProtocolMethodyyx18resilient_protocol0d6FrozenE0RzlF"(ptr noalias %0, ptr %T, ptr %T.OtherFrozenProtocol)
|
|
// CHECK: [[ADDR:%.*]] = getelementptr inbounds ptr, ptr %T.OtherFrozenProtocol, i32 1
|
|
// CHECK: [[FN:%.*]] = load ptr, ptr [[ADDR]]
|
|
// CHECK: call swiftcc void [[FN]](ptr noalias swiftself %0, ptr %T, ptr %T.OtherFrozenProtocol)
|
|
// CHECK: ret void
|
|
|
|
// @_fixed_layout protocols still emit method dispatch thunks though, which
|
|
// allows for a protocol to be retroactively declared as @_fixed_layout
|
|
// CHECK-LABEL: define{{( dllexport)?}}{{( protected)?}} swiftcc void @"$s16frozen_protocols14FrozenProtocolP14protocolMethodyyFTj"(
|
|
|