//   materialized in the address space of the calling process.
// * int is used as an index into arrays.
// * Deletion functions are safe to call on nullptr.
//
// Questions left to address:
// * Might at some point need a way for callers to provide their own Env.
// * Maybe add TF_TensorShape that encapsulates dimension info.
//
// Design decisions made:

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	SLL	R5, R6, R7           // 1675a0e1
	SLL.S	R5, R6, R7           // 1675b0e1
	SLL	R5, R7               // 1775a0e1
	SLL.S	R5, R7               // 1775b0e1

// Ops with zero shifts should encode as left shifts
	ADD	R0<<0, R1, R2	     // 002081e0
	ADD	R0>>0, R1, R2	     // 002081e0
	ADD	R0->0, R1, R2	     // 002081e0
	ADD	R0@>0, R1, R2	     // 002081e0
	MOVW	R0<<0(R1), R2        // 002091e7