Am 18.04.2012 14:02, schrieb Vijay: > Hello, > Can we use llvmpipe for arm architecture.(Specifically ARM cortexA-9) ?? > > I tried & found below error. > > Unhandled instruction encoding format! > UNREACHABLE executed at ARMCodeEmitter.cpp:534! > Aborted > > Version used : llvmpipe3.0,Mesa-8.0 > > Any hint or info will be helpfull. >
As José said, noone tried so far. I don't know how good the llvm arm backend is, specifically for handling vector instructions it might not be quite up to the task, or the JIT might not work too well. I found some references saying old arm jit is 100% broken for VFP/NEON, which means mc-jit is needed, so it's probably not going to work right now. Oh and is this a Cortex-A9 with NEON? Some of the Cortex-A9 (ok I only know of one) don't have NEON, in which case with some luck the backend might still generate code which works but it's probably not too useful. I (very) quickly glanced over the neon instruction set, looks like it has pretty much everything needed for "reasonable" code generation. But in any case, that's certainly secondary issues if the jit doesn't work at all... Roland _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
