H. Peter Anvin 49a56ea9ee Add optimization for operand narrowing; tidy up selector handling ...

Add a optimization frameword for operand narrowing (where the operand
size doesn't matter beyond a certain range because only certain bits
are referenced.)

Add a macro *and* matching facility for dealing with segment selectors, which are
typically rm16/r32/r64, but exactly how that is applied varies
depending on if a datum is read or written.

Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>

2024-08-23 02:25:21 -07:00

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