value range propagation for _bitwise_ OR

Ellery Newcomer ellery-newcomer at utulsa.edu
Sat Dec 4 11:21:29 PST 2010

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is it just me, or does this fail for

minA = 0
minB = 0
maxA = 0x80_00_00_00
maxB = 0x80_00_00_00

I'm pretty sure you need to handle 1 << 32 specially

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