[llvm-commits] [llvm] r106952 - in /llvm/trunk: include/llvm/CodeGen/ISDOpcodes.h include/llvm/CodeGen/SelectionDAG.h lib/CodeGen/SelectionDAG/LegalizeDAG.cpp lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp lib/CodeGen/SelectionDAG/SelectionDAG

[Rafael Espindola]

> I'm more and more confused.  What is the definition of the alignment
> argument?  Does a value of A mean: the memory the VAARG is reading
> from is guaranteed to be aligned at least A?  That's what I had
> understood.  But your example suggests it means something completely
> different.  It sounds like a value of A means: this pointer may not
> be aligned A, and must be forced to an alignment of A before doing
> anything.  Can you please explain.

Correct. The meaning is "make sure this pointer is aligned to this",
no "we know it is already aligned to this".

> Ciao,
>
> Duncan.
>

Cheers,
-- 
Rafael Ávila de Espíndola