Add embedded text-size measurement scripts#252
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scripts/embedded_bench.sh
Cross-compiles a tiny driver TU that pulls LargeConditionals::Ok()
and DisjunctionConditionals::Ok() into an object file, then reports
the object's `size` totals and the per-Ok() symbol sizes on:
* ARM Cortex-M4 Thumb-2 (arm-none-eabi-g++ -mthumb -mcpu=cortex-m4 -Os)
* MicroBlaze big-endian (microblaze-buildroot-linux-gnu-g++ -Os)
* Host x86-64 -Os as a reference
All builds use -ffunction-sections + -fdata-sections so each
function gets its own section, making `nm --size-sort` and the
object's total .text directly comparable across compiles.
scripts/embedded_compare.sh
Runs embedded_bench on the current branch and a base ref (default
master), forwarding the test schema and the benchmark TU through
the checkout so the comparison measures the generator output and
not the test surface area. Prints a side-by-side table of TU .text
and per-symbol sizes with absolute deltas and percentages. Builds
on scripts/regenerate_goldens.py from the previous PR.
Depends on having arm-none-eabi-g++ and a microblaze-* g++ on PATH
(/opt/microblaze for the Bootlin-built MicroBlaze toolchain).
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scripts/embedded_bench.shcross-compiles a tiny driver TU that pullsLargeConditionalsView::Ok()andDisjunctionConditionalsView::Ok()into an object file, then reportssizetotals and per-symbol sizes on:arm-none-eabi-g++ -mthumb -mcpu=cortex-m4 -Os)microblaze-buildroot-linux-gnu-g++ -Os)-Osas a referenceAll builds use
-ffunction-sections+-fdata-sectionsso each function gets its own section, makingnm --size-sortand the object's total.textdirectly comparable across compiles.scripts/embedded_compare.shruns the bench on the current branch and a base ref (defaultmaster), forwarding the test schema and benchmark TU through the checkout so the comparison measures the generator output and not the test surface area. Prints a side-by-side table with absolute deltas and percentages.Requires
arm-none-eabi-g++and amicroblaze-*g++on PATH or in/opt/microblaze. Builds on the regen script from #251.No generator changes; no measurable impact on generated code.