search for: addrsinkusinggep

...teach CodeGenPrepare to sink GEPs as GEPs, and preserve the > > inbounds marker. This is the only way they can possibly be exposed to > > SDAG at the basic block level. > > Isn't addr-sink-using-gep already a thing? Yes, I'm not sure why I wrote that (maybe I saw the new addrSinkUsingGEPs in a patch and misremembered). It looks like what I actually did was attempt to decouple the logic. It's currently based on useAA, which seems to be an orthogonal question to me, so I added a new virtual function hook. I'm now suspicious of the logic there too, though. I'll inspect it...

As you may have noticed, we released a 64b S4 chip that runs an ILP32 variant of the AArch64 ABI, and now we'd like to upstream that work. I've pushed preliminary patches to https://github.com/TNorthover/llvm-project/pull/1/commits (arm64_32 branch in that repo) to accompany this RFC. The changes divide fairly neatly into three categories. First, there's AArch64 ILP32 support, which