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81bc6de8c0
Alternatively we could have extended the current semantics to 32-wide mode by changing brw_broadcast() to emit multiple indexed MOV instructions in the generator copying the selected value to all destination registers, but it seemed rather silly to waste EU cycles unnecessarily copying the exact same value 32 times in the GRF. The vstride change in the Align16 path is required to avoid assertions in validate_reg() since the change causes the execution size of the MOV and SEL instructions to be equal to the source region width. Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> |
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