[LLVMdev] Accounting for stack space

[Chris Lattner]

On Tue, 10 Jul 2007, Sandro Magi wrote:
> On 7/10/07, Chris Lattner <sabre at nondot.org> wrote:
>> On Sun, 8 Jul 2007, Sandro Magi wrote:
>>> How about if I were to use LLVM's JIT? I suspect plenty of allocations
>>> are performed in the JIT.
>> The JIT does a ton of heap allocation.  There is no way to approximate it
>> from the code you give it.
>
> I don't need to approximate it, but I'd like to be able to track it,
> in the sense of being able to measure the heap allocations as they are
> being performed.
>
> For instance, is it possible to entirely replace the malloc/free
> called by the LLVM libraries with my own implementation? This would
> achieve my goals, as I'm not against heap allocations, I just need to
> be able to measure them.

Not really.  The JIT allocates from the same heap as the program being 
used.  Your choices are to either override malloc/free for both the JIT 
and the program or for neither of them.

-Chris

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