Optimize: Reduce and merge unnecessary move instructions #48
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Collaborator
Author
|
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 |
Collaborator
Author
|
This is not done. |
Collaborator
Author
|
I think almost all pattern merging is done. |
Owner
|
Merged the PR. Thanks! |
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