Optimize: Reduce and merge unnecessary move instructions #48
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
Optimization sample local function advance(bodies, nbody, dt)
for i = 1, nbody do
local bi = bodies[i]
local bix, biy, biz, bimass = bi.x, bi.y, bi.z, bi.mass
local bivx, bivy, bivz = bi.vx, bi.vy, bi.vz
for j = i + 1, nbody do
local bj = bodies[j]
local dx, dy, dz = bix - bj.x, biy - bj.y, biz - bj.z
local dist2 = dx * dx + dy * dy + dz * dz
local mag = sqrt(dist2)
mag = dt / (mag * dist2)
local bm = bj.mass * mag
bivx = bivx - (dx * bm)
bivy = bivy - (dy * bm)
bivz = bivz - (dz * bm)
bm = bimass * mag
bj.vx = bj.vx + (dx * bm)
bj.vy = bj.vy + (dy * bm)
bj.vz = bj.vz + (dz * bm)
end
bi.vx = bivx
bi.vy = bivy
bi.vz = bivz
bi.x = bix + dt * bivx
bi.y = biy + dt * bivy
bi.z = biz + dt * bivz
end
end |
|
This is not done. |
|
I think almost all pattern merging is done. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.