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0f4429b224
Previously type sizes would be inconsistently sourced from either the LLVM type or the FixedTypeInfo, depending on the call site. This was problematic because TypeInfo operates with a resolution of whole bytes, which means that types such as i1 would get a reported as having a size of 8. This patch now asserts that all occurrences of the same type have the same size as the first, cached occurence. To avoid triggering the cached type verification assertion, this patch avoids caching of storage-sized containers. It also removes the unique identifier from forward declarations, which could lead to type confusion during LTO. rdar://102367872
78 lines
2.5 KiB
Swift
78 lines
2.5 KiB
Swift
// RUN: %target-swift-frontend %s -O -emit-ir -g -o %t.ll -module-name a
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// RUN: cat %t.ll | %FileCheck %s --check-prefix=CASE_0
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// RUN: cat %t.ll | %FileCheck %s --check-prefix=CASE_1
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// RUN: cat %t.ll | %FileCheck %s --check-prefix=CASE_2
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public enum Result<Value> {
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case success(Value)
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case failure(Error)
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}
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extension Result {
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public func map<U>(_ transform: (Value) -> U) -> Result<U> {
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switch self {
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case .success(let value):
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return .success(transform(value))
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case .failure(let error):
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return .failure(error)
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}
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}
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}
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@inline(never)
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func use<T>(_ t : T) {
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print(t)
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}
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public class SomeClass {
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public let s = "hello"
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}
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extension Result where Value : SomeClass {
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public func f() -> Self {
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use(self)
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return map({ $0 })
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}
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}
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extension Result {
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public func g() {
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use(self)
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}
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}
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let x : Result<SomeClass> = .success(SomeClass())
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let y : Result<(Int64, Int64, Int64, Int64)> = .success((1, 2, 3, 4))
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x.f()
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y.g()
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// Here we have three types, all named $s1a6ResultOyxGD (---> a.Result<A>),
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// but with different storage sizes:
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//
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// 0. Unsized from the subroutine type of map<U>.
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// 1. Enum wrapping a pointer-sized object [map() and f()].
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// 2. Enum wrapping a 4x64-bit tuple.
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//
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// Test that bound generic enums are *not* using their mangled name as a unique
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// identifier.
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// (0) unsized.
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// CASE_0-DAG: !DISubprogram(name: "map", {{.*}}line: 11, type: ![[SBTY:[0-9]+]]
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// CASE_0-DAG: ![[SBTY]] = !DISubroutineType(types: ![[SBTYS:[0-9]+]])
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// CASE_0-DAG: ![[SBTYS]] = !{!{{[0-9]+}}, !{{[0-9]+}}, ![[SELFTY:[0-9]+]]}
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// CASE_0-DAG: ![[SELFTY]] = !DICompositeType(tag: DW_TAG_structure_type, {{.*}}DIFlagFwdDecl
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// The unique unsized type.
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// CASE_0-DAG: !DICompositeType(tag: DW_TAG_structure_type, name: "$s1a6ResultOyxGD", {{.*}}DIFlagFwdDecl
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// (1)
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// CASE_1-DAG: ![[F:[0-9]+]] = distinct !DISubprogram(name: "f",
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// CASE_1-DAG: !DILocalVariable(name: "self", arg: 1, scope: ![[F]],{{.*}} line: 31,{{.*}} type: ![[C_CLASS:[0-9]+]]
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// CASE_1-DAG: ![[C_CLASS]] = !DIDerivedType(tag: DW_TAG_const_type,{{.*}} baseType: ![[CLASS:[0-9]+]])
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// CASE_1-DAG: ![[CLASS]] = !DICompositeType(tag: DW_TAG_structure_type,{{.*}} size: {{40|72}}
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// (2)
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// CASE_2-DAG: ![[G:[0-9]+]] = distinct !DISubprogram(name: "g",
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// CASE_2-DAG: !DILocalVariable(name: "self", arg: 1, scope: ![[G]],{{.*}} line: 38,{{.*}} type: ![[C_TUP:[0-9]+]]
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// CASE_2-DAG: ![[C_TUP]] = !DIDerivedType(tag: DW_TAG_const_type,{{.*}} baseType: ![[TUP:[0-9]+]])
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// CASE_2-DAG: ![[TUP]] = !DICompositeType(tag: DW_TAG_structure_type,{{.*}} size: {{264|512}},
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