mirror of
https://github.com/holub/mame
synced 2025-06-05 04:16:28 +03:00
3ad89ebbc7
cpu/drcbex64.cpp: Avoid a lot of unnecessary flag manipulation on shift/rotate operations. Don't calculate flags when not requested. Don't preserve carry in for operations that don't use it as an input. cpu/drcbex64.cpp: Avoid loading CL when ECX can be used. Loading CL doesn't clear the upper bits, so it depends on the previous value of RCX, causing pipeline dependencies. Loading ECX can grab a fresh rename register. cpu/drcbearm64.cpp: Attempt more optimisation on one more load immediate operation. cpu/e132xs: Get rid of a redundant TEST - ROLAND can set the Z flag. |
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