Zuxy Meng
270e18c364
avcodec/x86/h264: convert chroma MC MMX to SSE2
...
Convert the last MMX (mmxext) chroma MC functions, 8-bit mc2
put/avg and 10-bit mc4/mc2 put/avg, to SSE2. pshufw becomes
pshuflw (identical low half); the 10-bit MC4 macro needs no code
change (SPLATW is dual-ISA). Dispatch moves from EXTERNAL_MMXEXT
to EXTERNAL_SSE2.
checkasm h264chroma passes. No difference in performance.
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