llvm dev - Jun 2009 - [LLVMdev] Type get size

I am trying to get the address ranges that are allocated by the global
variable list of a module. I cannot seem to find an easy way to get
the size of a global variable. That is, if the C source looks like:

int a[3];

then printing the description of the type of this global looks like:

[3 x i32]*

Is there some nice way to get "3 words" or "12 bytes" from
the above
example? Let's assume I do some "isSized" check. It looks like
there
is a getPrimitiveSizeInBits, but nothing for composite types. Maybe I
am missing something.

Thanks,
Scott

Ah, I needed some target-dependent stuff (TargetData) to make this work.

On Mon, Jun 29, 2009 at 3:41 PM, Scott Ricketts<sricketts at
maxentric.com> wrote:
> I am trying to get the address ranges that are allocated by the global
> variable list of a module. I cannot seem to find an easy way to get
> the size of a global variable.
I used TargetData::getTypeSizeInBits(const Type* Ty). Also, I added:

AU.addRequired<TargetData>();

to getAnalysisUsage(AnalysisUsage &AU) for my pass struct.

There are a few other options for getting type size from TargetData
(e.g. getTypeAllocSize).

Scott