DropInBang.message: def of bend-lint-rules@0.2.0.0
Import: import bend-lint-rules@0.2.0.0/performance/drop_in_bang.bend as DropInBang
Lines 22-26 of bend-lint-rules@0.2.0.0/performance/drop_in_bang.bend: https://jend.leeeet.dev/read.txt?path=bend-lint-rules@0.2.0.0/performance/drop_in_bang.bend&start_line=22&end_line=26

import Base

# Functions
# =========
def message(callee: String) -> String:
  callee
    ++ "! only frees what it receives, as it returns Unit, and a GPU frees slower than its CPU. GPU: measured 15x slower than without the `!` on a discrete GPU (CUDA), dropping a 1M-leaf image; with unified memory (Apple M-series), freeing a scene in a bang made a frame 12.9 ms, against 8.0 ms (\"bend guide shaders\"). CPU (`--gpu off`): 10% slower. JS: no GPU, so no change. Confidence: high, as a GPU does not speed up freeing. Remove the `!`; to drop the last frame, let the next frame's fork tree drop it, a quadrant per tile (\"bend guide shaders\"). If a timing shows the `!` faster here, expect this finding."

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.append