On 12/30/2013 07:28 AM, Peter Maydell wrote: > Yeah, we could do that. Will the optimiser optimise away the unnecessary > extra load of the unused high 32 bits for the "32 bit or smaller" case on > a 32 bit host CPU?
It should. We do transform qemu_st_i64 to qemu_st_i32 as appropriate for 32-bit hosts, making the high part of the tcg ld_i64 dead. r~
