[Icc-mot] Better optimizer ideas

[Gene Norris]

Richard,

It may be able to be optimize:

  0033           ;       c = ((((unsigned char)-1)>>1)); //MAX INT
  0033 CCFFFF            ldd #65535
  0036 87                clra
  0037 87                clra
  0038 47                asra
  0039 56                rorb
  003A 6C80              std 0,S

clra does not need repeated
asra is not required after clra (clra clears the carry bit)

so, a couple of possible peep holes
clra + clra = clra
clra + asra = clra

-- 
Gene Norris
Chief Engineer

SPOT Engineering, Inc.
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