Nikita Popov 874c0327e7 [Attributor] Use ConstantFoldLoadFromConst()
When determining the initial value of the object, use the constant
folding API to load a given type at a given offset in the global
initializer. This makes it work for cases where the load doesn't
directly correspond to an aggregate member.

Differential Revision: https://reviews.llvm.org/D135435
2022-10-10 10:17:37 +02:00
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