-From reading the PowerISA v3.0C sections we have learned and taken on board that a "Sandbox" opcode exists (EXT22) which is intended for "small private extensions" to the OpenPOWER ISA. Our Bitmanipulation Extension alone, needed for Audio/Video and cryptographic workloads, struggles to fit into that space, and we have not yet added Custom 3D opcodes or the IEEE754 Transcendentals (SIN, COS).
+From reading the PowerISA v3.0C sections we have learned and taken on board that a "Sandbox" opcode exists (EXT22) which is intended for "small private extensions" to the OpenPOWER ISA, and the expectation that these extendions mot be supported by upstream toolchains is something we agree wholeheartedly with,
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+The problem is that our Bitmanipulation Extension alone, needed for Audio/Video and cryptographic workloads, struggles to fit into that space, and we have not yet added Custom 3D opcodes or the IEEE754 Transcendentals (SIN, COS).