[jki275]

I don't think that applies to the ESP32 family of devices. I've never heard of DSP hardware onboard them.

I think the comment you're referring to is talking about the architecture in general, but not the silicon we're discussing here.

[restricted_ptr]

ESP32 ee.* operations in assembly look pretty much like aliases for a VLIW bundles, on the same cycle issuing loads used in the next op while also doing multiplication on other operands. This is not a minimal Xtensa. They might not have the Tensilica toolchain for redistribution to use these features freely but apparently they exposed these extensions in their assembler in some form.