[New PM][PassInstrumentation] IR printing support for New Pass Manager
Implementing -print-before-all/-print-after-all/-filter-print-func support
through PassInstrumentation callbacks.
- PrintIR routines implement printing callbacks.
- StandardInstrumentations class provides a central place to manage all
the "standard" in-tree pass instrumentations. Currently it registers
PrintIR callbacks.
Reviewers: chandlerc, paquette, philip.pfaffe
Differential Revision: https://reviews.llvm.org/D50923
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@342896
91177308-0d34-0410-b5e6-
96231b3b80d8
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