[llvm-commits] [llvm] r77989 - in /llvm/trunk: lib/CodeGen/LowerSubregs.cpp lib/CodeGen/MachineInstr.cpp test/CodeGen/ARM/2009-08-02-RegScavengerAssert-Neon.ll

[Jakob Stoklund Olesen]

On 04/08/2009, at 19.31, Evan Cheng wrote:

> There isn't a client for backward() right now so I am not too
> concerned about it. But in this case, it would assume R0 is not-live.

I think I understand <undef> now, and I think backward() can work. It  
just has to ignore <undef> operands, just like forward().

Anyway, if there are no clients, can I kill it? It is bit rotting.

/jakob