• Russ Cox's avatar
    6l: eliminate dead code, not just the symbols · 9cba9c88
    Russ Cox authored
    editing the firstp list was ineffective,
    because follow rebuilds it from the textp list.
    
    the symbols for dead code were being dropped
    from the binary but the code was all still there.
    
    text for fmt.Printf("hello, world\n") drops
    from 143945 to 128650.
    
    R=r,ken
    DELTA=22  (20 added, 0 deleted, 2 changed)
    OCL=28255
    CL=28290
    9cba9c88
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