llvm-project

7caf12da - [mlir][core] Add an MLIR "pattern catalog" generator (#146228)

[mlir][core] Add an MLIR "pattern catalog" generator (#146228) This PR adds a feature that attaches a listener to all RewritePatterns that logs information about the modified operations. When the MLIR test suite is run, these debug outputs can be filtered and combined into an index linking operations to the patterns that insert, modify, or replace them. This index is intended to be used to create a website that allows one to look up patterns from an operation name. The debug logs emitted can be viewed with --debug-only=generate-pattern-catalog, and the lit config is modified to do this when the env var MLIR_GENERATE_PATTERN_CATALOG is set. Example usage: ``` mkdir build && cd build cmake -G Ninja ../llvm \ -DLLVM_ENABLE_PROJECTS="mlir" \ -DLLVM_TARGETS_TO_BUILD="host" \ -DCMAKE_BUILD_TYPE=DEBUG ninja -j 24 check-mlir MLIR_GENERATE_PATTERN_CATALOG=1 bin/llvm-lit -j 24 -v -a tools/mlir/test | grep 'pattern-logging-listener' | sed 's/^# | [pattern-logging-listener] //g' | sort | uniq > pattern_catalog.txt ``` Sample pattern catalog output (that fits in a gist): https://gist.github.com/j2kun/02d1ab8d31c10d71027724984c89905a --------- Co-authored-by: Jeremy Kun <j2kun@users.noreply.github.com> Co-authored-by: Mehdi Amini <joker.eph@gmail.com>