diff options
Diffstat (limited to 'clang/lib/CodeGen/CGObjC.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGObjC.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGObjC.cpp b/clang/lib/CodeGen/CGObjC.cpp index 1ca56df37ff..304288de6da 100644 --- a/clang/lib/CodeGen/CGObjC.cpp +++ b/clang/lib/CodeGen/CGObjC.cpp @@ -1802,6 +1802,22 @@ void CodeGenFunction::EmitARCIntrinsicUse(ArrayRef<llvm::Value*> values) { } +static bool IsForwarding(StringRef Name) { + return llvm::StringSwitch<bool>(Name) + .Cases("objc_autoreleaseReturnValue", // ARCInstKind::AutoreleaseRV + "objc_autorelease", // ARCInstKind::Autorelease + "objc_retainAutoreleaseReturnValue", // ARCInstKind::FusedRetainAutoreleaseRV + "objc_retainAutoreleasedReturnValue", // ARCInstKind::RetainRV + "objc_retainAutorelease", // ARCInstKind::FusedRetainAutorelease + "objc_retainedObject", // ARCInstKind::NoopCast + "objc_retain", // ARCInstKind::Retain + "objc_unretainedObject", // ARCInstKind::NoopCast + "objc_unretainedPointer", // ARCInstKind::NoopCast + "objc_unsafeClaimAutoreleasedReturnValue", // ARCInstKind::ClaimRV + true) + .Default(false); +} + static llvm::Constant *createARCRuntimeFunction(CodeGenModule &CGM, llvm::FunctionType *FTy, StringRef Name) { @@ -1819,6 +1835,13 @@ static llvm::Constant *createARCRuntimeFunction(CodeGenModule &CGM, // performance. F->addFnAttr(llvm::Attribute::NonLazyBind); } + + if (IsForwarding(Name)) { + llvm::AttrBuilder B; + B.addAttribute(llvm::Attribute::Returned); + + F->arg_begin()->addAttr(llvm::AttributeSet::get(F->getContext(), 1, B)); + } } return RTF; |
