#!/usr/bin/perl

#while (<>) {
#	last if /per-vertex PFPU fragment/;
#}

$i = 0;
while (<>) {
	next unless
	    /^(\d+):\s+(\S+)\s+(R\d+)?(,(R\d+))?.*?(->\s+(R\d+))?\s*$/;
	#     1        2       3      4 5          6     7
	($c, $op, $a, $b, $d) = ($1, $2, $3, $5, $7);
	undef $e;
	$e = $1 if /E=(\d+)>/;
	die if $c != $i;

	$a = $reg{$a} if defined $reg{$a};
	$b = $reg{$b} if defined $reg{$b};

	if ($op eq "IF") {
		$expr = "(IF $reg{002} $a $b)";
	} elsif ($op eq "VECTOUT") {
		$res = "$a\n$b\n";
	} elsif (defined $b) {
		$expr = "($op $a $b)";
	} elsif (defined $a) {
		$expr = "($op $a)";
	} else {
		$expr = "($op)";
	}

	$val[$e] = $expr if defined $e;
	$reg{$d} = $val[$i] if defined $d;
	$i++;
}

print $res;