[all-commits] [llvm/llvm-project] 3573a9: [PM] Show the pass argument in pre/post-pass IR dumps

[Nicolas Guillemot via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3573a90b8aec082b8d7a1e2fc35f7103a0df7cb6
      https://github.com/llvm/llvm-project/commit/3573a90b8aec082b8d7a1e2fc35f7103a0df7cb6
  Author: Nicolas Guillemot <nguillemot at apple.com>
  Date:   2021-02-25 (Thu, 25 Feb 2021)

  Changed paths:
    M clang/test/Misc/pr32207.c
    M llvm/lib/IR/LegacyPassManager.cpp
    M llvm/test/CodeGen/SystemZ/frame-26.mir
    M llvm/test/Transforms/Inline/null-function.ll

  Log Message:
  -----------
  [PM] Show the pass argument in pre/post-pass IR dumps

This patch adds each pass' pass argument in the header for IR dumps.
For example:

Before:

```
    *** IR Dump Before InstructionSelect ***
```

After:

```
    *** IR Dump Before InstructionSelect (instruction-select) ***
```

The goal is to make it easier to know what argument to pass to
command line options like `debug-only` or `run-pass` to further
investigate a given pass.