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llvm-project/clang/test/CodeGenObjCXX/arc-attrs.mm

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Don't pass -O0 to clang_cc1, it is the default. llvm-svn: 189910
2013-09-04 12:12:25 +08:00
// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -emit-llvm -fobjc-arc -o - %s | FileCheck %s
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
id makeObject1() __attribute__((ns_returns_retained));
id makeObject2() __attribute__((ns_returns_retained));
void releaseObject(__attribute__((ns_consumed)) id);
CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail. llvm-svn: 188447
2013-08-15 14:47:53 +08:00
// CHECK-LABEL: define void @_Z10sanityTestv
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
void sanityTest() {
// CHECK: [[X:%.*]] = alloca i8*, align 8
// CHECK-NEXT: [[OBJ1:%.*]] = call i8* @_Z11makeObject1v()
// CHECK-NEXT: store i8* [[OBJ1]], i8** [[X]], align 8
id x = makeObject1();
// CHECK-NEXT: [[OBJ2:%.*]] = call i8* @_Z11makeObject2v()
Fix mangled name of method with ns_consumed parameters. When a function/method use a parameter with "ns_consumed" attribute, ensure that the mangled name is the same whether -fobjc-arc is used or not. Since "ns_consumed" attribute is generally used to inform ARC that a function/method does sink the reference, it mean it is usually implemented in a compilation unit compiled without -fobjc-arc but used form a compilation unit compiled with it. Originally found while trying to use "ns_consumed" attribute in an Objective-C++ file in Chromium (http://crbug.com/599980) where it caused a linker error. Regression introduced by revision 262278 (previously the attribute was incorrectly not part of the mangled name). Patch from Sylvain Defresne <sdefresne@chromium.org>! http://reviews.llvm.org/D20113 llvm-svn: 270702
2016-05-25 22:15:08 +08:00
// CHECK-NEXT: call void @_Z13releaseObjectP11objc_object(i8* [[OBJ2]])
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
releaseObject(makeObject2());
Generate objc intrinsics instead of runtime calls as the ARC optimizer now works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
2018-12-19 04:33:00 +08:00
// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** [[X]], i8* null)
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
// CHECK-NEXT: ret void
}
template <typename T>
T makeObjectT1() __attribute__((ns_returns_retained));
template <typename T>
T makeObjectT2() __attribute__((ns_returns_retained));
template <typename T>
void releaseObjectT(__attribute__((ns_consumed)) T);
CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail. llvm-svn: 188447
2013-08-15 14:47:53 +08:00
// CHECK-LABEL: define void @_Z12templateTestv
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
void templateTest() {
// CHECK: [[X:%.*]] = alloca i8*, align 8
Fix mangled name of method with ns_consumed parameters. When a function/method use a parameter with "ns_consumed" attribute, ensure that the mangled name is the same whether -fobjc-arc is used or not. Since "ns_consumed" attribute is generally used to inform ARC that a function/method does sink the reference, it mean it is usually implemented in a compilation unit compiled without -fobjc-arc but used form a compilation unit compiled with it. Originally found while trying to use "ns_consumed" attribute in an Objective-C++ file in Chromium (http://crbug.com/599980) where it caused a linker error. Regression introduced by revision 262278 (previously the attribute was incorrectly not part of the mangled name). Patch from Sylvain Defresne <sdefresne@chromium.org>! http://reviews.llvm.org/D20113 llvm-svn: 270702
2016-05-25 22:15:08 +08:00
// CHECK-NEXT: [[OBJ1:%.*]] = call i8* @_Z12makeObjectT1IU8__strongP11objc_objectET_v()
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
// CHECK-NEXT: store i8* [[OBJ1]], i8** [[X]], align 8
id x = makeObjectT1<id>();
Fix mangled name of method with ns_consumed parameters. When a function/method use a parameter with "ns_consumed" attribute, ensure that the mangled name is the same whether -fobjc-arc is used or not. Since "ns_consumed" attribute is generally used to inform ARC that a function/method does sink the reference, it mean it is usually implemented in a compilation unit compiled without -fobjc-arc but used form a compilation unit compiled with it. Originally found while trying to use "ns_consumed" attribute in an Objective-C++ file in Chromium (http://crbug.com/599980) where it caused a linker error. Regression introduced by revision 262278 (previously the attribute was incorrectly not part of the mangled name). Patch from Sylvain Defresne <sdefresne@chromium.org>! http://reviews.llvm.org/D20113 llvm-svn: 270702
2016-05-25 22:15:08 +08:00
// CHECK-NEXT: [[OBJ2:%.*]] = call i8* @_Z12makeObjectT2IU8__strongP11objc_objectET_v()
// CHECK-NEXT: call void @_Z13releaseObjectP11objc_object(i8* [[OBJ2]])
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
releaseObject(makeObjectT2<id>());
// CHECK-NEXT: [[OBJ3:%.*]] = call i8* @_Z11makeObject1v()
Fix mangled name of method with ns_consumed parameters. When a function/method use a parameter with "ns_consumed" attribute, ensure that the mangled name is the same whether -fobjc-arc is used or not. Since "ns_consumed" attribute is generally used to inform ARC that a function/method does sink the reference, it mean it is usually implemented in a compilation unit compiled without -fobjc-arc but used form a compilation unit compiled with it. Originally found while trying to use "ns_consumed" attribute in an Objective-C++ file in Chromium (http://crbug.com/599980) where it caused a linker error. Regression introduced by revision 262278 (previously the attribute was incorrectly not part of the mangled name). Patch from Sylvain Defresne <sdefresne@chromium.org>! http://reviews.llvm.org/D20113 llvm-svn: 270702
2016-05-25 22:15:08 +08:00
// CHECK-NEXT: call void @_Z14releaseObjectTIU8__strongP11objc_objectEvT_(i8* [[OBJ3]])
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
releaseObjectT(makeObject1());
Generate objc intrinsics instead of runtime calls as the ARC optimizer now works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
2018-12-19 04:33:00 +08:00
// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** [[X]], i8* null)
Sema: Preserve attributes on parameters in instantiated function templates. This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> llvm-svn: 176728
2013-03-09 06:25:36 +08:00
// CHECK-NEXT: ret void
}
Forward ns_consumed delegate arguments with a move. StartFunction enters a release cleanup for ns_consumed arguments in ARC, so we need to balance that somehow. We could teach StartFunction that it's emitting a delegating function, so that the cleanup is unnecessary, but that would be invasive and somewhat fraught. We could balance the consumed argument with an extra retain, but clearing the original variable should be easier to optimize and avoid some extra work at -O0. And there shouldn't be any difference as long as nothing else uses the argument, which should always be true for the places we emit delegate arguments. Fixes PR 27887. llvm-svn: 287291
2016-11-18 09:08:24 +08:00
// PR27887
struct ForwardConsumed {
ForwardConsumed(__attribute__((ns_consumed)) id x);
};
ForwardConsumed::ForwardConsumed(__attribute__((ns_consumed)) id x) {}
// CHECK: define void @_ZN15ForwardConsumedC2EP11objc_object(
// CHECK-NOT: objc_retain
// CHECK: store i8* {{.*}}, i8** [[X:%.*]],
// CHECK-NOT: [[X]]
Generate objc intrinsics instead of runtime calls as the ARC optimizer now works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
2018-12-19 04:33:00 +08:00
// CHECK: call void @llvm.objc.storeStrong(i8** [[X]], i8* null)
Forward ns_consumed delegate arguments with a move. StartFunction enters a release cleanup for ns_consumed arguments in ARC, so we need to balance that somehow. We could teach StartFunction that it's emitting a delegating function, so that the cleanup is unnecessary, but that would be invasive and somewhat fraught. We could balance the consumed argument with an extra retain, but clearing the original variable should be easier to optimize and avoid some extra work at -O0. And there shouldn't be any difference as long as nothing else uses the argument, which should always be true for the places we emit delegate arguments. Fixes PR 27887. llvm-svn: 287291
2016-11-18 09:08:24 +08:00
// CHECK: define void @_ZN15ForwardConsumedC1EP11objc_object(
// CHECK-NOT: objc_retain
// CHECK: store i8* {{.*}}, i8** [[X:%.*]],
// CHECK: [[T0:%.*]] = load i8*, i8** [[X]],
// CHECK-NEXT: store i8* null, i8** [[X]],
// CHECK-NEXT: call void @_ZN15ForwardConsumedC2EP11objc_object({{.*}}, i8* [[T0]])
Generate objc intrinsics instead of runtime calls as the ARC optimizer now works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
2018-12-19 04:33:00 +08:00
// CHECK: call void @llvm.objc.storeStrong(i8** [[X]], i8* null)