[PATCH] [POWERPC] Emulate isel (Integer Select) instruction

[Scott Wood]

On Mon, Nov 19, 2007 at 09:36:57PM -0600, Kumar Gala wrote:
> isel (Integer Select) is a new user space instruction in the
> PowerISA 2.04 spec.  Not all processors implement it so lets emulate
> to ensure code built with isel will run everywhere.

Given that the instruction is meant to be a performance enhancement,
we should probably warn the first few times it's emulated, so the user
knows they should change their toolchain setup if possible.

-Scott