On Mon, 30 Sep 2019 at 11:26, Alex Bennée <alex.ben...@linaro.org> wrote: > The int128 support is due to the fact we are going to start to see newer > architectures with things like 128 bit shadow capability registers and > they will be a pain to shuffle around in 32 bit generated host code as > well as requiring writing new extra plumbing for TCG's pre/post amble to > pass them back and forth between C and generated code. These guest > architectures may not even be full 64 bit guests so it's not quite as > simple as saying you can't have 64 bit guests on a 32 bit host.
I think that for int128_t in particular, the ideal answer is that if the compiler developers want to introduce a new abstraction like that, they should support it on all targets, not just half of them... thanks -- PMM
