I think you pretty much answered your own question: B::Deparse seems to do just what you want:
my ($foo, $bar, $baz, $mul, $op1, $op2);
my $cr1 = sub
$foo = $bar * $baz;
my $cr2 = sub
$foo = $bar * $baz; # Note whitespace differences
my $cr3 = sub
$mul = $op1 * $op2;
my $cr4 = sub
$foo = $baz * $bar;
my ($s1, $s2) = @_;
my $deparse = B::Deparse->new("-p", "-sC");
my $body1 = $deparse->coderef2text($s1);
my $body2 = $deparse->coderef2text($s2);
if ($body1 eq $body2)
21:39 >perl 427_SoPW.pl
So, the initial results look promising, at least!
Hope that helps,
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