[PATCH] D30119: MachineRegionInfo: fix pass initialization

[Francis Visoiu Mistrih via Phabricator via llvm-commits]

thegameg updated this revision to Diff 88991.
thegameg marked 3 inline comments as done.
thegameg edited the summary of this revision.
thegameg added a comment.

- Simplify MIR test. Removing IR causes MachineBasicBlock::getName() to return `"(null)"`.
- Return an empty string instead of `"(null)"` in MachineBasicBlock::getName() (same behavior as Value::getName()).


https://reviews.llvm.org/D30119

Files:
  include/llvm/CodeGen/MachineBasicBlock.h
  lib/CodeGen/CodeGen.cpp
  lib/CodeGen/MachineBasicBlock.cpp
  lib/CodeGen/MachineRegionInfo.cpp
  test/CodeGen/MIR/X86/machine-region-info.mir

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