[LLVMdev] Basic block liveouts

[Jeff Kunkel]

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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