[PATCH] D72482: [mlir] Add a DCE pass for dead symbols.

[River Riddle via Phabricator via llvm-commits]

rriddle created this revision.
rriddle added reviewers: mehdi_amini, jpienaar.
Herald added subscribers: llvm-commits, lucyrfox, mgester, arpith-jacob, nicolasvasilache, antiagainst, shauheen, burmako, mgorny.
Herald added a project: LLVM.

This pass deletes all symbols that are found to be unreachable. This is done by computing the set of operations that are known to be live, propagating that liveness to other symbols, and then deleting all symbols that are not within this live set.

Depends On D72044 <https://reviews.llvm.org/D72044>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D72482

Files:
  mlir/include/mlir/IR/SymbolTable.h
  mlir/include/mlir/Transforms/Passes.h
  mlir/lib/IR/SymbolTable.cpp
  mlir/lib/Transforms/CMakeLists.txt
  mlir/lib/Transforms/SymbolDCE.cpp
  mlir/test/IR/test-symbol-dce.mlir

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