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...hat exposes register allocation details is pretty annoying. Jakob: Thoughts on how you'd want to model this as it goes through the allocator? -eric -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20121126/6b23f877/attachment.html>

On Thu, Nov 22, 2012 at 1:19 PM, Tim Northover <t.p.northover at gmail.com> wrote: >> "r" is supposed to be a single register, not a register pair; the fact >> that gcc accepts this is probably an accident. clang should reject >> this code (without crashing, of course). > > I'm not quite convinced by this. On AArch64, GCC supports the %H, %Q > and %R