Displaying 1 result from an estimated 1 matches for "a86dfc77".
2018 Jul 18
2
Lowering SEXT (and ZEXT) efficiently on Z80
I'm working on a Z80 backend and am trying to efficiently lower SEXT,
specifically 8 to 16 bit, in LowerOperation() according to the following
rules:
The Z80 has 8 bit registers and 16 bit registers, which are aliased
versions of two 8 bit registers.
8 bit registers are named A, H, L, D, E and some more.
16 bit registers are HL (composed of H + L), DE (D + E) - and some more
- with L and