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3e377c68f8
Some conversions are not directly supported in hardware and need to be split in two conversion instructions going through an intermediary type. Doing this at the NIR level simplifies a bit the complexity in the backend. v2: - Consider fp16 rounding conversion opcodes - Properly handle swizzles on conversion sources. v3 - Run the pass earlier, right after nir_opt_algebraic_late (Jason) - NIR alu output types already have the bit-size (Jason) - Use 'is_conversion' to identify conversion operations (Jason) v4: - Be careful about the intermediate types we use so we don't lose range and avoid incorrect rounding semantics (Jason) Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com> (v1) Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> |
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