deadcode-size.sh

Overview

deadcode-size.sh — flash cost of the functions nothing calls. deadcode-graph.sh answers "what has no callers". This answers "and what does that cost", by joining that list against the symbol sizes in the linked image. A zero-caller function that the linker already discarded costs nothing and is not worth an argument; one that survived into .text is real flash. That distinction is the whole reason -Wl,--print-gc-sections is the wrong tool for this: it lists what was REMOVED. What is in the image and unreachable never appears in its output. ./scripts/deadcode-size.sh rank uncalled symbols by flash bytes ./scripts/deadcode-size.sh --serve puncover's interactive view instead puncover renders callers/callees and stack depth per symbol from the DWARF, which is worth more than any text report once you are chasing a specific function. It is a server: it does not exit, so it is not scriptable. Its --generate-report writes stack-usage entries only, not symbol sizes.