I've added LLVMDev to Cc.
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Could you describe what are the semantics you need for inline asm
constraints in the kernel?
GCC doesn't document all the corner cases, and defining inline asm =
"whatever gcc accepts" is not very useful for LLVM.
So far we've encountered the problem with input/output operand tied to
same register, but having different widths:
- output wider than input, both integers: do you need this case?
- output narrower than input, both integers: this is the common case, right?
- can it also happen that input is pointer, output is integer of
- .. any other mismatches?
Could you also describe why put_user/the example from pcbios needs the