diff options
| author | Fariborz Jahanian <fjahanian@apple.com> | 2009-09-30 17:10:29 +0000 |
|---|---|---|
| committer | Fariborz Jahanian <fjahanian@apple.com> | 2009-09-30 17:10:29 +0000 |
| commit | 75b08f169fa47285ce5381091367793ed611195c (patch) | |
| tree | 69d2ed19b2e6ffa06c19324e74de9534af12d503 /lib/CodeGen/CGExpr.cpp | |
| parent | 76a69ad089e74c2fe7ffb52f4414e73aae11711a (diff) | |
<rdar://problem/7263113> Make clang produce gcc's objc_assign_StrongCast as a result of type-cast of an ivar in assignment.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83150 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CGExpr.cpp')
| -rw-r--r-- | lib/CodeGen/CGExpr.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp index af8363dbb1..d89da3224f 100644 --- a/lib/CodeGen/CGExpr.cpp +++ b/lib/CodeGen/CGExpr.cpp @@ -719,8 +719,18 @@ void setObjCGCLValueClass(const ASTContext &Ctx, const Expr *E, LValue &LV) { } else if (const UnaryOperator *Exp = dyn_cast<UnaryOperator>(E)) setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV); - else if (const ParenExpr *Exp = dyn_cast<ParenExpr>(E)) + else if (const ParenExpr *Exp = dyn_cast<ParenExpr>(E)) { setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV); + if (LV.isObjCIvar()) { + // If cast is to a structure pointer, follow gcc's behavior and make it + // a non-ivar write-barrier. + QualType ExpTy = E->getType(); + if (ExpTy->isPointerType()) + ExpTy = ExpTy->getAs<PointerType>()->getPointeeType(); + if (ExpTy->isRecordType()) + LV.SetObjCIvar(LV, false); + } + } else if (const ImplicitCastExpr *Exp = dyn_cast<ImplicitCastExpr>(E)) setObjCGCLValueClass(Ctx, Exp->getSubExpr(), LV); else if (const CStyleCastExpr *Exp = dyn_cast<CStyleCastExpr>(E)) |