Tuple types that goes across the hardware restriction

riscv-non-isa / rvv-intrinsic-doc

https://jira.riscv.org/browse/RVG-153

BSD 3-Clause "New" or "Revised" License

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Tuple types that goes across the hardware restriction #290

Open eopXD opened 11 months ago

eopXD commented 11 months ago

This issue is a placeholder to help us keep track of the idea and revisit after v1.0.

Currently we have tuple types that matches conforms to the hardware restriction (that is, NFIELD * LMUL <= 8). Complex math functions may have the need to return two LMUL=8 values. We should be able to achieve this in a software point of view.

kito-cheng commented 11 months ago

Two use case in my mind:

Complex math functions: https://en.cppreference.com/w/c/numeric/complex
sincos: https://man7.org/linux/man-pages/man3/sincos.3.html