[XLA] Rewrite reshape of broadcast to reduce-window if the reshape merely combines dimensions introduced by the broadcast with dimensions of the broadcast's operand. Causes some regressions but overall runtime geomean of 1.007x.
[XLA] Rewrite reshape of broadcast to reduce-window if the reshape merely combines dimensions introduced by the broadcast with dimensions of the broadcast's operand. Causes some regressions but overall runtime geomean of 1.007x.
