NEW 196365
B3 peephole optimizations for Mul should treat left shifts like multiplications 
https://bugs.webkit.org/show_bug.cgi?id=196365
Summary B3 peephole optimizations for Mul should treat left shifts like multiplications
Robin Morisset
Reported 2019-03-28 12:30:06 PDT
So for example Mul(Shl(x, c1), c2) => Mul(x, 2**c1 * c2)
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