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Chris Tate
5a574e86ce
The tree-shaking test failed on Linux x64 after main was merged into
this branch: "expected 84496 to be less than 81920". Measured with the
release runtime pack (hello = console.log("hello", "world")):
tree file R+E segment
main b866ae323 80288 0x5fe9
989d0d6bc 79928 0x5fe9
merge 474012f04 84488 0x6579
No runtime family comes back: hello's absence checks still pass. The
code that grows is the cycle collector and the release paths that feed
it, which hello's exit reaches (scr_lib_init -> scr_lib_cleanup ->
scr_arr_release -> scr_cyc_on_release -> scr_cyc_collect_due -> the
pass). Main grew it by 1,447 bytes (the death rule and
scr_mem_order_for_free), this branch by 1,386 (the inline nursery
appends in the runtime's release functions, scr_cyc_route_bypassed and
the window). Main left .text 23 bytes under the executable segment's
24 KiB page, so together they cross it, and every later segment and the
file move by 4 KiB. 96 KiB, the Mach-O ceiling, restores several pages
of slack.