[mlir] remove unnecessary atomic_rmw expansions #144515
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The expansion of `memref.atomic_rmw` into a `memref.generic_atomic_rmw` for floating-point min/max operations is no longer necessary as those are now supported by the LLVM dialect and LLVM IR. Furthermore, combining this expansion with direct lowering of `generic_atomic_rmw` could leads to invalid LLVM dialect IR with `cmpxchg` operating on floating-point values that it does not support.
tgymnich
approved these changes
Jun 17, 2025
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The expansion of
memref.atomic_rmwinto amemref.generic_atomic_rmwfor floating-point min/max operations is no longer necessary as those are now supported by the LLVM dialect and LLVM IR.Furthermore, combining this expansion with direct lowering of
generic_atomic_rmwcould leads to invalid LLVM dialect IR withcmpxchgoperating on floating-point values that it does not support.