[LLVMdev] Documentation of malloc/free

Chris Lattner clattner at apple.com
Mon Dec 7 09:21:33 PST 2009

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  


> 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
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