Fangrui Song 8d95fd7e56 [MachineFunctionPass] Support -filter-passes for -print-changed ...

[MachineFunctionPass] Support -filter-passes for -print-changed

-filter-passes specifies a `PassID` (a lower-case dashed-separated pass name,
also used by -print-after, -stop-after, etc) instead of a CamelCasePass.

`-filter-passes=CamelCaseNewPMPass` seems like a workaround for new PM passes before
we can use lower-case dashed-separated pass names (as used by `-passes=`).

Example:
```
# getPassName() is "IRTranslator". PassID is "irtranslator"
llc -mtriple=aarch64 -print-changed -filter-passes=irtranslator < print-changed-machine.ll
```

Close https://github.com/llvm/llvm-project/issues/57453

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D133055

2022-09-01 11:06:06 -07:00

7.3 KiB

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