[llvm] r192265 - Add a paragraph about MCTargetStreamer.

[Quentin Colombet]

Awesome!

Thanks,
-Quentin

On Oct 16, 2013, at 7:59 AM, Rafael Espíndola <rafael.espindola at gmail.com> wrote:

> I added a bit more information in r192796. Adding code fragments would
> seem a bit out of place in that document.
> 
> Cheers,
> Rafael
> 
> 
> On 9 October 2013 13:20, Quentin Colombet <qcolombet at apple.com> wrote:
>> Hi Rafael,
>> 
>> Thanks for this adding!
>> 
>> I think we could also give more information on how to set this information.
>> In particular, I think it may be useful to explain the need of a call to
>> TargetRegistry::RegisterXXXStreamer and quickly explain what the registered
>> function is supposed to do (basically, create the related MCTargetStreamer
>> and pass it down to the default createXXXStreamer).
>> Mentioning or directly putting code fragment from Mips (or ARM) as an
>> example may greatly help.
>> 
>> Thanks again.
>> 
>> Cheers,
>> -Quentin
>> 
>> On Oct 8, 2013, at 7:05 PM, Rafael Espindola <rafael.espindola at gmail.com>
>> wrote:
>> 
>> Author: rafael
>> Date: Tue Oct  8 21:05:08 2013
>> New Revision: 192265
>> 
>> URL: http://llvm.org/viewvc/llvm-project?rev=192265&view=rev
>> Log:
>> Add a paragraph about MCTargetStreamer.
>> 
>> Modified:
>>   llvm/trunk/docs/CodeGenerator.rst
>> 
>> Modified: llvm/trunk/docs/CodeGenerator.rst
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/CodeGenerator.rst?rev=192265&r1=192264&r2=192265&view=diff
>> ==============================================================================
>> --- llvm/trunk/docs/CodeGenerator.rst (original)
>> +++ llvm/trunk/docs/CodeGenerator.rst Tue Oct  8 21:05:08 2013
>> @@ -636,6 +636,13 @@ file (MCObjectStreamer).  MCAsmStreamer
>> that prints out a directive for each method (e.g. ``EmitValue -> .byte``),
>> but
>> MCObjectStreamer implements a full assembler.
>> 
>> +For target specific directives, the MCStreamer has a MCTargetStreamer
>> instance.
>> +Each target that needs it defines a class that inherits from it and is a
>> lot
>> +like MCStreamer itself: It has one method per directive and two classes
>> that
>> +inherit from it, a target object streamer and a target asm streamer. The
>> target
>> +asm streamer just prints it (``emitFnStart -> .fnstrart``), and the object
>> +streamer implement the assembler logic for it.
>> +
>> The ``MCContext`` class
>> -----------------------
>> 
>> 
>> 
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>> 
>> 

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