Read the input line by line. If the line contains patX, just verify that you have stored X-1 values so far. Otherwise, store the value into an array; once the array has 5 elements, print the register name and the elements. 
#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

my @values;
while (<>) {
    if (my ($size) = /^pat([0-9])/) {
        $size == 1 + @values
            or die "Unexpected $_";

        next
    }

    my ($register, $value) = /(\S+).*\}([0-9])/;

    say join "\t", $register, splice @values
        if 5 == push @values, $value;
}

[download]
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re: Formatted output file with data processing by choroba
in thread Formatted output file with data processing by kshitij

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