Davide Italiano e7ffae9dea [SCCP] Remove code in visitBinaryOperator (and add tests). ...

We visit and/or, we try to derive a lattice value for the
instruction even if one of the operands is overdefined.
If the non-overdefined value is still 'unknown' just return and wait
for ResolvedUndefsIn to "plug in" the correct value. This simplifies
the logic a bit. While I'm here add tests for missing cases.

llvm-svn: 287709

2016-11-22 22:11:25 +00:00

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