const device comparisons zephyr issue

eval-flash.sh

#!/bin/sh

CONST_REF=nordic/issue/22941a
SUBOBJ_REF=nordic/20200611a
BASE_REF=$(git merge-base ${CONST_REF} ${SUBOBJ_REF})

build () {
  tag=$1 ; shift  
  ref=$1 ; shift
  args="${@}"
  id=$(echo ${tag}-${sample}-on-${board} | tr '[/:]' '[__]')
  echo 1>&2 "building ${id} ${args:+with ${args}}"
  (
    git checkout ${ref}
    west update
    rm -rf build
    west build -b ${board} ${sample} ${args}
  ) > ${id}.buildlog 2>&1
  rm -f ${tag}.elf
  cp -p build/zephyr/zephyr.elf ${tag}.elf
  # Zephyr build memory summary usage summary comes from
  # --print-memory-usage used in the final link.  It does not match
  # anything from size(1), nor does it match the totals from the
  # rom/ram report targets.  It's not clear that it can be
  # reconstructed after the link completes, so extract the data from
  # the build log.
  cat ${id}.buildlog \
      | sed -n -e '/Memory region/,+3p' \
      > ${tag}.memuse
}

get_summary () {
  tag=$1 ; shift
  ( echo ${tag} ;
    awk '/:/ {print $1, $2}' ${tag}.memuse
  ) | paste -s
}

(cat << EOText
$(date)
$(git describe --abbrev=24 ${BASE_REF}) base 
$(git describe --abbrev=24 ${CONST_REF}) const ref 
      #22508 updated
      https://github.com/pabigot/zephyr/commits/nordic/issue/22941a
$(git describe --abbrev=24 ${SUBOBJ_REF}) sub-object
      #26127
      https://github.com/pabigot/zephyr/commits/nordic/20200611a
EOText
) > eval.log
(cat <<EOText
samples/hello_world nrf52840dk_nrf52840
samples/hello_world frdm_k64f
samples/basic/button frdm_k64f
samples/boards/reel_board/mesh_badge reel_board
samples/sensor/fxos8700 frdm_k64f
EOText
) | sed -e '/^#/d' \
  | while read sample board args; do
  build base ${BASE_REF} ${args}
  build const ${CONST_REF} ${args}
  build subobj ${SUBOBJ_REF} ${args}

  # Pull the memory regions and the variant 
  set - $(get_summary base)
  col1=$2
  base_1=$3
  col2=$4
  base_2=$5
  set - $(get_summary const)
  const_1=$3
  const_2=$5
  set - $(get_summary subobj)
  subobj_1=$3
  subobj_2=$5

  ( echo "${sample} on ${board}:"
    for tag in base const subobj ; do
      ( echo
	echo ${tag} ;
        awk '/:/ {print $1, $2}' ${tag}.memuse
      ) | paste -s
    done
    echo "	const - base: ${col1} $((const_1 - base_1)) ; ${col2} $((const_2 - base_2))"
    echo "	subobj - base: ${col1} $((subobj_1 - base_1)) ; ${col2} $((subobj_2 - base_2))"
  ) | tee -a eval.log
done

eval.log

Fri 19 Jun 2020 07:11:16 AM CDT
zephyr-v2.3.0-309-g999c59c1ec627a6fff7db23b base 
zephyr-v2.3.0-320-g061a86229ad2ca320d5c8ce5 const ref 
      #22508 updated
      https://github.com/pabigot/zephyr/commits/nordic/issue/22941a
zephyr-v2.3.0-322-g046ceb3a1405336827bc7200 sub-object
      #26127
      https://github.com/pabigot/zephyr/commits/nordic/20200611a
samples/hello_world on nrf52840dk_nrf52840:
	base	FLASH: 13240	SRAM: 5200	IDT_LIST: 56
	const	FLASH: 13288	SRAM: 5112	IDT_LIST: 56
	subobj	FLASH: 13368	SRAM: 5152	IDT_LIST: 56
	const - base: FLASH: 48 ; SRAM: -88
	subobj - base: FLASH: 128 ; SRAM: -48
samples/hello_world on frdm_k64f:
	base	FLASH: 12308	SRAM: 4080	IDT_LIST: 88
	const	FLASH: 12372	SRAM: 3864	IDT_LIST: 88
	subobj	FLASH: 12464	SRAM: 3968	IDT_LIST: 88
	const - base: FLASH: 64 ; SRAM: -216
	subobj - base: FLASH: 156 ; SRAM: -112
samples/basic/button on frdm_k64f:
	base	FLASH: 14332	SRAM: 4088	IDT_LIST: 88
	const	FLASH: 14396	SRAM: 3880	IDT_LIST: 88
	subobj	FLASH: 14508	SRAM: 3976	IDT_LIST: 88
	const - base: FLASH: 64 ; SRAM: -208
	subobj - base: FLASH: 176 ; SRAM: -112
samples/boards/reel_board/mesh_badge on reel_board:
	base	FLASH: 253716	SRAM: 59397	IDT_LIST: 168
	const	FLASH: 253780	SRAM: 59173	IDT_LIST: 168
	subobj	FLASH: 254188	SRAM: 59269	IDT_LIST: 168
	const - base: FLASH: 64 ; SRAM: -224
	subobj - base: FLASH: 472 ; SRAM: -128
samples/sensor/fxos8700 on frdm_k64f:
	base	FLASH: 33656	SRAM: 7696	IDT_LIST: 104
	const	FLASH: 33732	SRAM: 7440	IDT_LIST: 104
	subobj	FLASH: 33908	SRAM: 7560	IDT_LIST: 104
	const - base: FLASH: 76 ; SRAM: -256
	subobj - base: FLASH: 252 ; SRAM: -136