Size comparison for TinyGo

sizecheck.sh

#!/bin/sh

# Note: use this script like so:
#   git checkout dev
#   ./sizecheck.sh > size0.txt
#   git checkout some-feature-branch
#   ./sizecheck.sh > size1.txt
#   sizediff size0.txt size1.txt

for t in testdata/*.go; do echo host $t; tinygo build -o test.elf -size=short -no-debug $t; md5sum test.elf; done
echo

for t in testdata/*.go; do echo wasm $t; tinygo build -o wasm.wasm -size=short -no-debug $t; /bin/ls -l wasm.wasm; done
echo

for t in testdata/*.go; do echo microbit $t; tinygo build -o test.hex -target microbit -size=short $t; md5sum test.hex; done
echo

make smoketest XTENSA=0

sizediff

#!/usr/bin/env python3

import sys

class Comparison:
    def __init__(self, command, code0, data0, bss0, code1, data1, bss1):
        self.command = command
        self.code0 = code0
        self.data0 = data0
        self.bss0 = bss0
        self.code1 = code1
        self.data1 = data1
        self.bss1 = bss1

    @property
    def codediff(self):
        return self.code1 - self.code0

def readSizes(path):
    sizes = []
    lines = open(path).readlines()
    for i in range(len(lines)):
        if not lines[i].strip().startswith('code '):
            continue
        # found a size header
        code, data, bss = map(int, lines[i+1].split()[:3])
        command = lines[i-1].strip()
        sizes.append({
            'command': command,
            'code':    code,
            'data':    data,
            'bss':     bss,
        })
    return sizes

def main():
    path0 = sys.argv[1]
    path1 = sys.argv[2]
    sizes0 = readSizes(path0)
    sizes1 = readSizes(path1)
    comparisons = []
    for i in range(len(sizes0)):
        if i >= len(sizes1):
            print('%s has more commands than %s' % (path0, path1))
            print('   ', sizes0[i]['command'])
            break
        if sizes0[i]['command'] != sizes1[i]['command']:
            print('not the same command!')
            print('   ', sizes0[i]['command'])
            print('   ', sizes1[i]['command'])
        comparisons.append(Comparison(sizes0[i]['command'], sizes0[i]['code'], sizes0[i]['data'], sizes0[i]['bss'], sizes1[i]['code'], sizes1[i]['data'], sizes1[i]['bss']))
    if len(sizes0) < len(sizes1):
        print('%s has more commands than %s' % (path1, path0))
        print('   ', sizes1[len(sizes0)]['command'])
    comparisons.sort(key=lambda x: x.codediff)
    totalCode0 = 0
    totalCode1 = 0
    totalDiff = 0
    print('before  after   diff')
    for comparison in comparisons:
        print('%6d %6d %6d %5.1f%%  %s' % (comparison.code0, comparison.code1, comparison.codediff, comparison.codediff / comparison.code0 * 100, comparison.command))
        totalCode0 += comparison.code0
        totalCode1 += comparison.code1
        totalDiff += comparison.codediff
    print('sum: %d (%.1f%%)' % (totalDiff, totalDiff / totalCode0 * 100))


if __name__ == '__main__':
    main()

Nice