def message

bend-lint-rules@0.2.0.0 · performance/loop_invariant_call.bend:23

import Base

23# Functions
24# =========
25def message(callee: String, loop: String) -> String:
26  callee
27    ++ " gets the same arguments on every step of "
28    ++ loop
29    ++ ", so it computes the same value each time: clang hoists plain arithmetic out of a loop, but not a call of a definition that loops. All lanes. Confidence: medium, as the gain is what the call costs. Compute it once before the loop, and pass it as a parameter. If the call is cheap, or the loop repeats it on purpose (a benchmark), expect this finding."