[libre-riscv-dev] [isa-dev] 3D Matrix-style operations / primitives

[lkcl]

On Wednesday, September 18, 2019 at 3:41:49 PM UTC+8, Jacob Lifshay wrote:

> | m00 m10 m20 m30 |
> | m01 m11 m21 m31 | 
> | m02 m12 m22 m32 |
> | m03 m13 m23 m33 |
> 
> 
> transpose 4 corner 2x2 matrices
> 
> 
> 
> intermediate:
> | m00 m01 m20 m21 | 
> | m10 m11 m30 m31 |
> | m02 m03 m22 m23 |
> | m12 m13 m32 m33 |

How does that work with only SUBVL swizzle in only 4 intructions? The swizzles only apply horizontally, afaik.

L.