compile.c (compile_array): rewrite the compilation algorithm

The original code looks unnecessarily complicated (to me).
Also, it creates a pre-allocated array only for the prefix of the array.

The new code optimizes not only the prefix but also the subsequence that
is longer than 0x40 elements.

    # not optimized
    10000000.times { [1+1, 1,2,3,4,...,63]    } # 2.12 sec.
    # (1+1; push 1; push 2; ...; puts 63; newarray 64; concatarray)

    # optimized
    10000000.times { [1+1, 1,2,3,4,...,63,64] } # 1.46 sec.
    # (1+1; newarray 1; putobject [1,2,3,...,64]; concatarray)

0 files changed, 0 insertions, 0 deletions