[LLVMdev] Basic block liveouts

[Jeff Kunkel]

Sorry, I think I answered the wrong question.

On Fri, Nov 5, 2010 at 12:07 PM, Jeff Kunkel <jdkunk3 at gmail.com> wrote:

> They cannot be found like the live in values because different values may
> be live out.
>
> For instance the psudocode may look like:
>
> BB0:
>   vreg1 = rand()
>   if( vreg1 > .5 ) goto BB1;
>   else goto BB2;
> BB1:
>   vreg 2 = rand();
>   EAX = copy vreg2;
>   Return
> BB2:
>   vreg 3 = rand() * rand()'
>   EAX = copy vreg3;
>   Return
>
> On Fri, Nov 5, 2010 at 7:41 AM, s Last namerc <srcsrc84 at yahoo.com> wrote:
>
>> Is there an easy way to obtain all liveout variables of a basic block?
>> Liveins
>> can be found for each MachineBasicBlock, but I can only find liveouts for
>> the
>> whole function, at MachineRegisterInfo. Do I need to find them out
>> manually?
>>
>>
>>
>>
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>>
>
>
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