Vector indexing and insertion operations #509
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HugoPeters1024
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HugoPeters1024
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| -> OpenExp env aenv i | ||
| -> OpenExp env aenv s | ||
| -> OpenExp env aenv (Vec n s) | ||
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Remove VecPac and VecUnpack? Those just get turned your new index and write instructions. We might as well also add VecShuffle, corresponding to the shufflevector instruction.
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One of the more complicated things about VecPack and Unpack is the need to derive the tuple type. I got rather stuck trying to make changes to that whole pipeline, could you assist me on this live sometime?
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Ah, good point. Okay let's just shelve that for now.
I've been thinking how this vector support can be restructured after you mentioned you couldn't have a Vec Node (or any non-primitive thing), which is sort of a weird limitation for our language...
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The two blocking constraints are Prim Node (which can be implemented I think). However EltR Node ~ Node is the culprit. Perhaps some unsafe coerceon from and to a flattened byte vector?
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Description
Allow indexing into the existing
Vecprimitive to enable branchless, constant time, memory reads with runtime offsets. Especially useful for having a local chunk of memory during anExpcomputation that doesn't have to live in global memory.Motivation and context
This functionality will bring Accelerate closer to supporting BVH traversal for realtime (ray/path)tracing with complex scenes.
How has this been tested?
It has not, this PR is in development and should not be merged right now :}
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