Arthur Eubanks 111aa4e366 [NewPM] Add callbacks to PassBuilder to run before/after parsing a pass
This is in preparation for supporting -debugify-each, which adds a debug
info pass before and after each pass.

Switch VerifyEach to use this.

Reviewed By: ychen

Differential Revision: https://reviews.llvm.org/D88107
2020-09-23 15:25:40 -07:00
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