[llvm-commits] [pr11677][patch] Eagerly materialize functions whose BBs are used in global variables inits

[Rafael Ávila de Espíndola]

I think this is the simplest non hack fix for PR11677.

The problem is that when a user sees a global variable, it has no way of
knowing if that variable is "complete" or if materializing a function
will change its initialization.

To prevent this from happening, this patch materializes all functions
that could have an impact.

I intend to add a unit test before committing, but it is a bit
cumbersome as I couldn't find any infrastructure for using .ll or .bc
files in the unit tests.

Cheers,
Rafael
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