[bug-gawk] Does gawk optimize length(row) in for-loop?

[Peng Yu]

Hi, I have the following two code snippets. The first one takes the
length() out of the loop. I am wondering whether gawk does any
optimization for case 2 so that length() is only called once. Or
length() will be called multiple times in case 2?

# code snippet 1
    nf = length(row)
    for(i=dat_col; i<=nf; ++i) {
      data[i] += row[i]
    }

# code snippet 2
    for(i=dat_col; i<=length(row); ++i) {
      data[i] += row[i]
    }

-- 
Regards,
Peng