Jit64: boolX - Precompute complement of b

PowerPC instructions andcx and orcx complement the value of register b
before performing their respective bitwise operation. If this register
happens to contain a known value, we can precompute the complement,
allowing us to generate simpler code.

- andcx
Before:
BF 00 01 00 00       mov         edi,100h
F7 D7                not         edi
41 23 FE             and         edi,r14d

After:
41 8B FE             mov         edi,r14d
81 E7 FF FE FF FF    and         edi,0FFFFFEFFh

- orc
Before:
41 BE 04 00 00 00    mov         r14d,4
41 F7 D6             not         r14d
45 0B F5             or          r14d,r13d

After:
45 8B F5             mov         r14d,r13d
41 83 CE FB          or          r14d,0FFFFFFFBh

0 files changed, 0 insertions, 0 deletions