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The body region must contain exactly one block that terminates with		The body region must contain exactly one block that terminates with
"loop.yield" without operands. Parsing ParallelOp will create such a region		"loop.yield" without operands. Parsing ParallelOp will create such a region
and insert the terminator when it is absent from the custom format.		and insert the terminator when it is absent from the custom format.

Example:		Example:

```mlir		```mlir
loop.parallel (%iv) = (%lb) to (%ub) step (%step) -> f32 {		%init = constant 0.0 : f32
%zero = constant 0.0 : f32		loop.parallel (%iv) = (%lb) to (%ub) step (%step) init (%init) -> f32 {
loop.reduce(%zero) : f32 {		%elem_to_reduce = load %buffer[%iv] : memref<100xf32>
		loop.reduce(%elem_to_reduce) : f32 {
^bb0(%lhs : f32, %rhs: f32):		^bb0(%lhs : f32, %rhs: f32):
%res = addf %lhs, %rhs : f32		%res = addf %lhs, %rhs : f32
loop.reduce.return %res : f32		loop.reduce.return %res : f32
}		}
}		}
```		```
}];		}];

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[MLIR] Update documentation for loop.parallel.ClosedPublic