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In IVB and BYT, both regioning parameters and execution sizes are measured as 32-bits element size. So when we have something like: mov(8) g2<1>DF g3<4,4,1>DF We are not actually moving 8 doubles (our intention), but 4 doubles. We need to double the parameters to cope with this issue. However, horizontal strides don't behave as they're supposed to on IVB for DF regions, they will cause each 32-bit half of DF sources to be strided individually, and doubling the value won't make any difference. v2: - Use devinfo directly (Matt). - Use Baytrail instead of Valleview (Matt). - Use IvyBridge instead of Ivy (Matt) - Double the exec_size in code emission (Curro) v3: - Change hstride doubling by an assert and fix commit log (Curro). - Substitute remaining compiler->devinfo by devinfo (Curro). v4: - Fix comment (Curro). Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> Reviewed-by: Francisco Jerez <currojerez@riseup.net>
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