[LLVMdev] Tail-calling

[Arnold Schwaighofer]

Tail calls through function pointers should work.If not please send a testcase.

I just added the two examples from the bug (1392) that calls for true
tail call support. They work on my machine (-tailcallopt needs to be
enabled) ;)

That would be commit 56127.

regards



On Thu, Sep 11, 2008 at 11:21 PM, Evan Cheng <evan.cheng at apple.com> wrote:
> Arnold implemented tail call. We should all urge him to continue his work to
> make it even better. :-)
>
> Evan
>
> On Sep 9, 2008, at 1:19 AM, OvermindDL1 wrote:
>
>>> Tail calls are disabled by default; to enable them, you have to pass
>>> -tailcallopt to llc.  It looks like there's a bug preventing indirect
>>> tail calls from working... I don't think there's anything
>>> fundamentally preventing them from working, though.
>>
>> I will not be using llc, it will all be through the C++ API.  I looked
>> through the code a bit, but could not see any real direct way to turn
>> on tall-calls, the only thing I could really find was a single global
>> (yes, a global... ugh...) that many things referenced, if I set that
>> then things should use tail-call versions of things.
>>
>> What about this indirect bug, is anyone working on it?  I would try,
>> but I am quite certain I do not yet have the LLVM internals knowledge
>> to (or even where to look).
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>