Simon Pilgrim 8e77458578 [DAG] visitShiftByConstant - replace constant detection with FoldConstantArithmetic
Instead of checking that an operand is constant/opaque before calling getNode() and then checking that the result is a constant, just use FoldConstantArithmetic which will just early-out if the operands are not constant foldable.
2022-10-17 16:19:10 +01:00
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