Jay Foad fdc0d5f399 [DAG] Do not call computeKnownBits from isKnownToBeAPowerOfTwo
The only way known bits could help identify a known power of two is if
it knows exactly which power of two it is, i.e. if it is a known
constant. But in that case the value should have been simplified to a
constant already. So save some compile time by not calling
computeKnownBits.

Differential Revision: https://reviews.llvm.org/D149325
2023-04-27 11:05:56 +01:00
..
2023-04-07 19:26:25 -04:00

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