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631769f2a0
If we have an absolute address whose high bits are known to be a sign extend of the low 12 bits, we can avoid emitting the LUI entirely. This is implemented in an analogous manner to the gp relative relocations - defining an internal usage relocation type. Since 12 bits (really 11 since the high bit must be zero in user code) is less than one page, all of these offsets fit in the null page. As such, the only application of these is likely to be undefined weak symbols except for embedded use cases. I'm mostly posting this for completeness sake.