[all-commits] [llvm/llvm-project] e2b4ba: [CIR] Add poison attribute (#150760)

[Sirui Mu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e2b4ba04140ecbd2367247334b04490ef9537c7a
      https://github.com/llvm/llvm-project/commit/e2b4ba04140ecbd2367247334b04490ef9537c7a
  Author: Sirui Mu <msrlancern at gmail.com>
  Date:   2025-07-27 (Sun, 27 Jul 2025)

  Changed paths:
    M clang/include/clang/CIR/Dialect/IR/CIRAttrs.td
    M clang/include/clang/CIR/MissingFeatures.h
    M clang/lib/CIR/Dialect/IR/CIRDialect.cpp
    M clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
    A clang/test/CIR/Lowering/poison.cir
    M clang/test/CIR/Transforms/bit.cir
    M clang/test/CIR/Transforms/canonicalize.cir

  Log Message:
  -----------
  [CIR] Add poison attribute (#150760)

This patch adds the `#cir.poison` attribute which represents a poison
value. This patch also updates various operation folders to let them
propagate poison values from their inputs to their outputs.



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