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authorVincent Ambo <mail@tazj.in>2022-12-12T00·00+0300
committertazjin <tazjin@tvl.su>2022-12-21T21·48+0000
commit87995ed35575e31ee881c796a901fdf4005a6ccb (patch)
tree262b0be7bce562f53378993c6830cfb92f0f0a9e /corp
parent922bf7aca9f4d4f4834ba5de7841ff58015c8791 (diff)
refactor(tvix/eval): add name-based index over compiler's locals r/5454
Instead of finding locals by doing 2x O(n) walks over the compiler's
locals list, use a secondary name-based index for resolving locals by
name.

Previously, almost 60% (!!) of eval time on some expressions over
nixpkgs was spent in `Local::has_name`. This function doesn't even
exist anymore now, and eval speed about doubles as a result.

Note that this doesn't exactly make the locals code easier to read,
but I'm also not sure what we can simplify in there in general.

This fixes b/227.

Change-Id: I29ce5eb9452b02d3b358c673e1f5cf8082e2fef9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7560
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Diffstat (limited to 'corp')
0 files changed, 0 insertions, 0 deletions