diff options
Diffstat (limited to 'lib/CodeGen/CodeGenFunction.h')
| -rw-r--r-- | lib/CodeGen/CodeGenFunction.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h index fc930ec158..4a0c35bd82 100644 --- a/lib/CodeGen/CodeGenFunction.h +++ b/lib/CodeGen/CodeGenFunction.h @@ -1653,13 +1653,26 @@ public: void EmitExprAsInit(const Expr *init, const ValueDecl *D, LValue lvalue, bool capturedByInit); + /// EmitAggregateCopy - Emit an aggrate assignment. + /// + /// The difference to EmitAggregateCopy is that tail padding is not copied. + /// This is required for correctness when assigning non-POD structures in C++. + void EmitAggregateAssign(llvm::Value *DestPtr, llvm::Value *SrcPtr, + QualType EltTy, bool isVolatile=false, + CharUnits Alignment = CharUnits::Zero()) { + EmitAggregateCopy(DestPtr, SrcPtr, EltTy, isVolatile, Alignment, true); + } + /// EmitAggregateCopy - Emit an aggrate copy. /// /// \param isVolatile - True iff either the source or the destination is /// volatile. + /// \param isAssignment - If false, allow padding to be copied. This often + /// yields more efficient. void EmitAggregateCopy(llvm::Value *DestPtr, llvm::Value *SrcPtr, QualType EltTy, bool isVolatile=false, - CharUnits Alignment = CharUnits::Zero()); + CharUnits Alignment = CharUnits::Zero(), + bool isAssignment = false); /// StartBlock - Start new block named N. If insert block is a dummy block /// then reuse it. |