Nikita Popov 9d1c8c0ba9 [InstCombine] Fix select operand simplification with undef (PR47696) ...

When replacing X == Y ? f(X) : Z with X == Y ? f(Y) : Z, make sure
that Y cannot be undef. If it may be undef, we might end up picking
a different value for undef in the comparison and the select
operand.

2020-10-01 21:15:48 +02:00

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