DrSocalkwe3n/luajit
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Record calls to vararg functions.

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This loop is now roughly 1000x faster than the Lua interpreter:
  local function f(a,b,...) end; for i=1,2e8 do f(1,2,i) end
Yet another silly microbenchmark -- I know.
This commit is contained in:
Mike Pall
2010-09-12 01:37:02 +02:00
parent b72ae54dc0
commit c2c08ba9b3
4 changed files with 56 additions and 16 deletions
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7
src/lj_snap.c
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@@ -87,15 +87,14 @@ static void snapshot_framelinks(jit_State *J, SnapEntry *map)
if (frame_islua(frame)) {
map[f++] = SNAP_MKPC(frame_pc(frame));
frame = frame_prevl(frame);
} else if (frame_ispcall(frame)) {
map[f++] = SNAP_MKFTSZ(frame_ftsz(frame));
frame = frame_prevd(frame);
} else if (frame_iscont(frame)) {
map[f++] = SNAP_MKFTSZ(frame_ftsz(frame));
map[f++] = SNAP_MKPC(frame_contpc(frame));
frame = frame_prevd(frame);
} else {
lua_assert(0);
lua_assert(!frame_isc(frame));
map[f++] = SNAP_MKFTSZ(frame_ftsz(frame));
frame = frame_prevd(frame);
}
}
lua_assert(f == (MSize)(1 + J->framedepth));