Previously we only used RIP relative when PIC was enabled. But
we know we're in small/kernel code model here so we should
be able to always use RIP-relative which will give a smaller
None of our lit tests are affected by this for some reason. Maybe the
update_test_checks.py is too aggressive with regular expressions?
I'll work on a proper test before committing, but I wanted to make
sure I wasn't missing anything that would prevent us from making this
Here's a godbolt link that demonstrates the current codegen https://godbolt.org/z/j3158o
Note in the non-PIC version the load from .LCPI0_0 doesn't use
RIP-relative addressing, but if you change the constant in the
source from 0.0 to 1.0 it will become RIP-relative.