[llvm-dev] Custom Alloca implementation
Alberto Barbaro via llvm-dev
llvm-dev at lists.llvm.org
Mon Jan 27 06:12:19 PST 2020
No problem at all. When you say at runtime you mean using the Interpreter
class or something else?
If I understood properly your problem I think you could do some
Where is I is the reference to the Alloca instruction.
I hope it is correct :)
On Mon, Jan 27, 2020, 13:40 Udit agarwal <dev.madaari at gmail.com> wrote:
> ---Adding llvm-dev list to CC---
> Hi Alberto,
> Thanks for your prompt reply. Actually, I need this information(about
> total allocation size and object structure) on runtime, so that is why I
> was planning to encode this info and store it in the memory itself.
> On Mon, Jan 27, 2020 at 7:05 PM Alberto Barbaro <barbaro.alberto at gmail.com>
>> Hello Udit,
>> I'm not sure but can't you achieve the same just using metadata avoiding
>> to change the alloca instruction?
>> On Mon, Jan 27, 2020, 12:09 Udit agarwal via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>> Hello all,
>>> In my project, I need to allocate an extra 4 Bytes in every Alloca
>>> instruction. These additional bytes will be used to store the 'allocation
>>> info'(like size and structure of the allocated object etc). Instead of
>>> adding 4 bytes to the Alloca 'size' operand at every Alloca Instruction, I
>>> was thinking to make this change at the level where Alloca gets converted
>>> to machine IR.
>>> Can anyone please point me towards the code which actually handles this
>>> conversion(lowering of Alloca Inst)?
>>> Udit kumar agarwal
>>> LLVM Developers mailing list
>>> llvm-dev at lists.llvm.org
> Udit kumar agarwal
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