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next up is doing it for multiple values, etc.
I want to just use __tls_get_addr directly (or rather llvm.threadlocal.address), but there may or may not be JIT issues.
doesn't really matter since LLVM pointers are opaque now, but I appreciate more clarity
speed up type boundaries a little. all the intrinsic accomplished was a type check, but we only use object-to-float conversion when we know it's the right type (or don't care) so a type check is unnecessary.
into the ThreadLocalState object.
llvm.threadlocal.address also has memory(none), which will be trickier to put together
it's still not enough to convince LLVM to merge calls, though.
that's about it for direct multiple values
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Moves most thread-local-storage access in compiled Lisp code out of intrinsics, which means fewer separate accesses to TLS, which hopefully means a bit more speed.