[LLVMdev] Documentation of malloc/free

[Garrison Venn]

Ah, thanks. The motivational reasons help my understanding.

Garrison
 
On Dec 7, 2009, at 12:55, Chris Lattner wrote:

> 
> On Dec 7, 2009, at 9:49 AM, Garrison Venn wrote:
> 
>> So I gather this means that malloc was removed from the IR because there are platforms that don't have non-stack allocation semantics?
> 
> No, it was removed because it wasn't necessary, and the malloc 'instruction' didn't support 64-bit targets.
> 
> -Chris
> 
>> 
>> Garrison
>> 
>> On Dec 7, 2009, at 12:21, Chris Lattner wrote:
>> 
>>> 
>>> On Dec 7, 2009, at 8:45 AM, Garrison Venn wrote:
>>> 
>>>> Ouch! Didn't see that. So at the risk of irritating those still in the process of baking 2.7, what is the sanction way of doing heap allocation going forward? :-)
>>> 
>>> No, we only support stack allocation in LLVM IR now. :-)
>>> 
>>> You can call out to normal malloc and free, just like any external function.
>>> 
>>> -Chris
>>> 
>>>> 
>>>> Garrison
>>>> 
>>>> On Dec 7, 2009, at 11:18, Chris Lattner wrote:
>>>> 
>>>>> 
>>>>> On Dec 7, 2009, at 2:13 AM, Florian Merz wrote:
>>>>> 
>>>>>> Hi everyone,
>>>>>> 
>>>>>> I noticed that MallocInst and FreeInst have been removed from the LLVM IR as
>>>>>> well as the language reference[1]. May I propose that at least some
>>>>>> placeholder is left in that document telling the reader that these
>>>>>> instructions have been removed. This should be kept in at least until there is
>>>>>> one official release that does not support these instructions anymore.
>>>>>> The same goes for the addition of the indirect branch instruction. A note in
>>>>>> the language reference would be nice telling the reader when this instruction
>>>>>> has been added to the language.
>>>>> 
>>>>> Hi Florian,
>>>>> 
>>>>> The documentation for LLVM is intended to describe the state of the system without a historical view.  To get the historical view we put major changes in the release notes.  These haven't been written yet for 2.7 though.
>>>>> 
>>>>> -Chris
>>>>> 
>>>>> 
>>>>> _______________________________________________
>>>>> LLVM Developers mailing list
>>>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>> 
>>> 
>> 
>> 
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>