Commits on Dec 4, 2023

1. [mlir][Complex] Fix bug in MergeComplexBitcast …

   When two `complex.bitcast` ops are folded and the resulting bitcast is a non-complex -> non-complex bitcast, an `arith.bitcast` should be generated. Otherwise, the generated `complex.bitcast` op is invalid.
   
   Also remove a pattern that convertes non-complex -> non-complex `complex.bitcast` ops to `arith.bitcast`. Such `complex.bitcast` ops are invalid and should not appear in the input.
   
   Note: This bug can only be triggered by running with `-debug` (which will should intermediate IR that does not verify) or with `MLIR_ENABLE_EXPENSIVE_PATTERN_API_CHECKS` (llvm#74270).

   

   matthias-springer committed Dec 4, 2023
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