[all-commits] [llvm/llvm-project] 55fe7b: Improve LegacyPassManager API to correctly report ...

[serge-sans-paille via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 55fe7b79bb7fab49af3720840224c0720bdb03c6
      https://github.com/llvm/llvm-project/commit/55fe7b79bb7fab49af3720840224c0720bdb03c6
  Author: serge-sans-paille <sguelton at redhat.com>
  Date:   2020-06-26 (Fri, 26 Jun 2020)

  Changed paths:
    M llvm/include/llvm/IR/LegacyPassManagers.h
    M llvm/include/llvm/Pass.h
    M llvm/include/llvm/PassAnalysisSupport.h
    M llvm/lib/IR/LegacyPassManager.cpp

  Log Message:
  -----------
  Improve LegacyPassManager API to correctly report modified status

When calling on-the-fly passes from the legacy pass manager, the modification
status is not reported, which is a problem in case we depend on an acutal
transformation pass, and not only analyse.

Update the Legacy PM API to optionally report the changed status, assert if a
change is detected but this change is lost.

Related to https://reviews.llvm.org/D80916

Differential Revision: https://reviews.llvm.org/D81236