[LLVMdev] MemoryBuffer

[Chris Lattner]

On Sep 24, 2009, at 3:57 PM, OvermindDL1 wrote:

>>> freeze for a sec.  It would also be nice to not require that as you
>>> could create a MemoryBuffer that references some *part* of an  
>>> existing
>>> MemoryBuffer that does not have a nul as the defreferenced end  
>>> pointer
>>> that you are giving in it.  Mostly I just do not understand why this
>>> restriction exists, so I am just looking for comprehension.
>
> Out of curiosity, what code in Clang is optimized by doing a pointer
> derefence then compare to 0, rather then just comparing two points
> directly?  Does not seem that efficient when laid out like that, which
> is why I am curious what code actually is helped by that pattern?

The code is out there, go read it :)

-Chris