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If a static variable can be evaluated at compile time, create an accessor using that value. This means static variables will always be inlined and removed. Note: currently this only works with numeric types.
109 lines
6.1 KiB
Swift
109 lines
6.1 KiB
Swift
// RUN: %target-swift-emit-ir -I %S/Inputs -enable-cxx-interop %s | %FileCheck %s
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// CHECK: @{{_ZN16WithStaticMember12staticMemberE|"\?staticMember@WithStaticMember@@2HA"}} = external {{(dso_local )?}}global i32, align 4
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// CHECK: @{{_ZN26WithIncompleteStaticMember10selfMemberE|"\?selfMember@WithIncompleteStaticMember@@2V1@A"}} = {{external|linkonce_odr}} {{(dso_local )?}}global %class.WithIncompleteStaticMember, align 4
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//TODO: This test uses only values of static const members, so it does not need
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//to depend on external definitions. However, our code generation pattern loads
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//the value dynamically. Instead, we should inline known constants. That would
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//allow Swift code to even read the value of WithIncompleteStaticMember::notDefined.
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// CHECK: @{{_ZN21WithConstStaticMember7definedE|"\?defined@WithConstStaticMember@@2HB"}} = {{available_externally|linkonce_odr}} {{(dso_local )?}}constant i32 48, {{(comdat, )?}}align 4
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// CHECK: @{{_ZN21WithConstStaticMember16definedOutOfLineE|"\?definedOutOfLine@WithConstStaticMember@@2HB"}} = external {{(dso_local )?}}constant i32, align 4
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// Make sure we remove constexpr globals after all uses have been inlined.
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// CHECK-NOT: _ZN25WithConstexprStaticMember13definedInlineE
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// CHECK-NOT: ?definedInline@WithConstexprStaticMember@@2HB
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// CHECK-NOT: @_ZN25WithConstexprStaticMember20definedInlineWithArgE
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// CHECK-NOT: @_ZN25WithConstexprStaticMember18definedInlineFloatE
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// CHECK-NOT: @_ZN25WithConstexprStaticMember23definedInlineFromMethodE
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import StaticMemberVar
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public func readStaticMember() -> CInt {
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return WithStaticMember.staticMember
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}
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// CHECK: define {{(protected |dllexport )?}}swiftcc i32 @"$s4main16readStaticMembers5Int32VyF"()
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// CHECK: [[VALUE:%.*]] = load i32, i32* getelementptr inbounds (%Ts5Int32V, %Ts5Int32V* bitcast (i32* @{{_ZN16WithStaticMember12staticMemberE|"\?staticMember@WithStaticMember@@2HA"}} to %Ts5Int32V*), i32 0, i32 0), align 4
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// CHECK: ret i32 [[VALUE]]
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public func writeStaticMember() {
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WithStaticMember.staticMember = -1
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}
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// CHECK: define {{(protected |dllexport )?}}swiftcc void @"$s4main17writeStaticMemberyyF"() #0
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// CHECK: store i32 -1, i32* getelementptr inbounds (%Ts5Int32V, %Ts5Int32V* bitcast (i32* @{{_ZN16WithStaticMember12staticMemberE|"\?staticMember@WithStaticMember@@2HA"}} to %Ts5Int32V*), i32 0, i32 0), align 4
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public func readSelfMember() -> WithIncompleteStaticMember {
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return WithIncompleteStaticMember.selfMember
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}
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// CHECK: define {{(protected |dllexport )?}}swiftcc i32 @"$s4main14readSelfMemberSo020WithIncompleteStaticD0VyF"() #0
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// CHECK: [[VALUE:%.*]] = load i32, i32* getelementptr inbounds (%TSo26WithIncompleteStaticMemberV, %TSo26WithIncompleteStaticMemberV* bitcast (%class.WithIncompleteStaticMember* @{{_ZN26WithIncompleteStaticMember1|"\?selfMember@WithIncompleteStaticMember@@2V1@A"}}
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// CHECK: ret i32 [[VALUE]]
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public func writeSelfMember(_ m: WithIncompleteStaticMember) {
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WithIncompleteStaticMember.selfMember = m
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}
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// CHECK: define {{(protected |dllexport )?}}swiftcc void @"$s4main15writeSelfMemberyySo020WithIncompleteStaticD0VF"(i32 %0) #0
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// CHECK: store i32 %0, i32* getelementptr inbounds (%TSo26WithIncompleteStaticMemberV, %TSo26WithIncompleteStaticMemberV* bitcast (%class.WithIncompleteStaticMember* @{{_ZN26WithIncompleteStaticMember10selfMemberE|"\?selfMember@WithIncompleteStaticMember@@2V1@A"}} to %TSo26WithIncompleteStaticMemberV*), i32 0, i32 0, i32 0), align 4
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// TODO: Currently, the generated code would try to load the value from
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// a symbol that is not defined. We should inline the value instead.
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// public func readNotDefinedConstMember() -> CInt {
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// return WithConstStaticMember.notDefined
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// }
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public func readDefinedConstMember() -> CInt {
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return WithConstStaticMember.defined
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}
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// CHECK: define {{(protected |dllexport )?}}swiftcc i32 @"$s4main22readDefinedConstMembers5Int32VyF"() #0
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// CHECK: [[VALUE:%.*]] = load i32, i32* getelementptr inbounds (%Ts5Int32V, %Ts5Int32V* bitcast (i32* @{{_ZN21WithConstStaticMember7definedE|"\?defined@WithConstStaticMember@@2HB"}} to %Ts5Int32V*), i32 0, i32 0), align 4
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// CHECK: ret i32 [[VALUE]]
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public func readDefinedOutOfLineConstMember() -> CInt {
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return WithConstStaticMember.definedOutOfLine
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}
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// CHECK: define {{(protected |dllexport )?}}swiftcc i32 @"$s4main31readDefinedOutOfLineConstMembers5Int32VyF"() #0
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// CHECK: [[VALUE:%.*]] = load i32, i32* getelementptr inbounds (%Ts5Int32V, %Ts5Int32V* bitcast (i32* @{{_ZN21WithConstStaticMember16definedOutOfLineE|"\?definedOutOfLine@WithConstStaticMember@@2HB"}} to %Ts5Int32V*), i32 0, i32 0), align 4
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// CHECK: ret i32 [[VALUE]]
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public func readConstexprStaticIntMembers() {
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let x = WithConstexprStaticMember.definedInline
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let y = WithConstexprStaticMember.definedInlineWithArg
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}
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// CHECK-LABEL: define {{(protected |dllexport )?}}swiftcc void @"$s4main29readConstexprStaticIntMembersyyF"()
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// CHECK: call swiftcc i32 @"$sSo25WithConstexprStaticMemberV13definedInlines5Int32VvgZ"()
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// CHECK: call swiftcc i32 @"$sSo25WithConstexprStaticMemberV013definedInlineA3Args5Int32VvgZ"()
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// CHECK: ret void
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// CHECK-LABEL: define linkonce_odr {{.*}}swiftcc i32 @"$sSo25WithConstexprStaticMemberV13definedInlines5Int32VvgZ"()
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// CHECK-NEXT: entry
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// CHECK-NEXT: ret i32 139
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// CHECK-LABEL: define linkonce_odr {{.*}}swiftcc i32 @"$sSo25WithConstexprStaticMemberV013definedInlineA3Args5Int32VvgZ"()
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// CHECK-NEXT: entry
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// CHECK-NEXT: ret i32 42
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public func readConstexprStaticFloatMembers() {
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let x = WithConstexprStaticMember.definedInlineFloat
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let y = WithConstexprStaticMember.definedInlineFromMethod
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}
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// CHECK-LABEL: define {{(protected |dllexport )?}}swiftcc void @"$s4main31readConstexprStaticFloatMembersyyF"()
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// CHECK: call swiftcc float @"$sSo25WithConstexprStaticMemberV18definedInlineFloatSfvgZ"()
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// CHECK: call swiftcc float @"$sSo25WithConstexprStaticMemberV23definedInlineFromMethodSfvgZ"()
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// CHECK: ret void
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// CHECK-LABEL: define linkonce_odr {{.*}}swiftcc float @"$sSo25WithConstexprStaticMemberV18definedInlineFloatSfvgZ"()
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// CHECK-NEXT: entry
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// CHECK-NEXT: ret float 1.390000e+02
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// CHECK-LABEL: define linkonce_odr {{.*}}swiftcc float @"$sSo25WithConstexprStaticMemberV23definedInlineFromMethodSfvgZ"()
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// CHECK-NEXT: entry
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// CHECK-NEXT: ret float 4.200000e+01
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