forked from tinygrad/tinygrad
* fix LtNode simplification when lhs and rhs contain same variables
`(Variable("a", 1, 5) < Variable("a", 1, 5))` should eval to `NumNode(0)`
* fix with less perf impact
* fix LtNode simplification when lhs and rhs contain same variables
`(Variable("a", 1, 5) < Variable("a", 1, 5))` should eval to `NumNode(0)`
* fix with less perf impact