[PATCH] D81889: [gicombiner] Allow disable-rule option to disable all-except-...

[Daniel Sanders via Phabricator via llvm-commits]

dsanders created this revision.
dsanders added reviewers: aditya_nandakumar, bogner, volkan, aemerson, paquette, arsenm.
Herald added a subscriber: wdng.
Herald added a project: LLVM.

Adds two features to the generated rule disable option:

- '*' - Disable all rules
- '!<foo>' - Re-enable rule(s)
  - '!foo' - Enable rule named 'foo'
  - '!5' - Enable rule five
  - '!4-9' - Enable rule four to nine
  - '!foo-bar' - Enable rules from 'foo' to (and including) 'bar'

This is intended to support unit testing of combine rules so
that you can do:

  GeneratedCfg.setRuleDisabled("*")
  GeneratedCfg.setRuleDisabled("!foo")

to ensure only a specific rule is in effect. The rule is still
required to be included in a combiner though


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D81889

Files:
  llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-copy-prop-disabled.mir
  llvm/utils/TableGen/GICombinerEmitter.cpp

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