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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
51 lines
1.6 KiB
Swift
51 lines
1.6 KiB
Swift
// RUN: %swift -prespecialize-generic-metadata -target %module-target-future -emit-ir %s | %FileCheck %s -DINT=i%target-ptrsize -DALIGNMENT=%target-alignment --check-prefix=CHECK --check-prefix=CHECK-%target-vendor
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// REQUIRES: VENDOR=apple || OS=linux-gnu
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// UNSUPPORTED: CPU=i386 && OS=ios
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// UNSUPPORTED: CPU=armv7 && OS=ios
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// UNSUPPORTED: CPU=armv7s && OS=ios
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fileprivate class Value<First> {
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let first_Value: First
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init(first: First) {
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self.first_Value = first
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}
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}
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fileprivate class Box {
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let value: Int
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init(value: Int) {
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self.value = value
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}
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}
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@inline(never)
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func consume<T>(_ t: T) {
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withExtendedLifetime(t) { t in
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}
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}
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// TODO: Prespecialize for Klazz<C> for C a class by initializing C in the
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// canonical specialized metadata accessor for Klazz<C>. At that point,
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// there should be no call to
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// __swift_instantiateConcreteTypeFromMangledName.
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// CHECK: define hidden swiftcc void @"$s4main4doityyF"() #{{[0-9]+}} {
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// CHECK: [[METADATA:%[0-9]+]] = call ptr @__swift_instantiateConcreteTypeFromMangledName(
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// CHECK-SAME: @"$s4main5Value[[UNIQUE_ID_1:[A-Za-z0-9_]+]]LLCyAA3BoxACLLCGMD"
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// CHECK: {{%[0-9]+}} = call swiftcc ptr @"$s4main5Value[[UNIQUE_ID_1]]LLC5firstADyxGx_tcfC"(
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// CHECK-SAME: ptr noalias {{%[0-9]+}},
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// CHECK-SAME: ptr swiftself [[METADATA]]
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// CHECK-SAME: )
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// CHECK: call swiftcc void @"$s4main7consumeyyxlF"(
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// CHECK-SAME: ptr noalias {{%[0-9]+}},
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// CHECK-SAME: ptr [[METADATA]])
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// CHECK: }
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func doit() {
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consume( Value(first: Box(value: 13)) )
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}
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doit()
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