If - 1 vs 11

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  1. If1 → If11 +14 -2
If1 → If11 RENAMED
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  If conditional
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  **Attributes**
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  * **else_branch** (required):
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  Graph to run if condition is false. Has N outputs: values you wish
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  to be live-out to the enclosing scope. The number of outputs must
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  match the number of outputs in the then_branch.
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  * **then_branch** (required):
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  Graph to run if condition is true. Has N outputs: values you wish to
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  be live-out to the enclosing scope. The number of outputs must match
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  the number of outputs in the else_branch.
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  **Inputs**
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  * **cond** (heterogeneous) - **B**:
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  Condition for the if
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  **Outputs**
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  Between 1 and 2147483647 outputs.
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  * **outputs** (variadic) - **V**:
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  Values that are live-out to the enclosing scope. The return values
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- in the then_branch and else_branch must be of the same shape and
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+ in the then_branch and else_branch must be of the same data
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+ type. The then_branch and else_branch may produce tensors with
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+ the same element type and different shapes. If corresponding outputs
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+ from the then-branch and the else-branch have static shapes S1 and
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+ S2, then the shape of the corresponding output variable of the if-
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+ node (if present) must be compatible with both S1 and S2 as it
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+ represents the union of both possible shapes.For example, if in a
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+ model file, the first output of then_branch is typed float tensor
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+ with shape [2] and the first output of else_branch is another
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+ float tensor with shape [3], If's first output should have (a) no
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+ shape set, or (b) a shape of rank 1 with neither dim_value nor
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+ dim_param set, or (c) a shape of rank 1 with a unique dim_param.
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+ In contrast, the first output cannot have the shape [2] since [2]
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- same data type.
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+ and [3] are not compatible.
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  **Type Constraints**
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  * **V** in (
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  tensor(bool),
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  tensor(complex128),
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  tensor(complex64),
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  tensor(double),
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  tensor(float),
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  tensor(float16),
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  tensor(int16),
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  tensor(int32),
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  tensor(int64),
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  tensor(int8),
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  tensor(string),
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  tensor(uint16),
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  tensor(uint32),
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  tensor(uint64),
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  tensor(uint8)
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  ):
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  All Tensor types
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  * **B** in (
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  tensor(bool)
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  ):
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  Only bool