output.txt

7500f0df856ebd0865eb147239172e4e376af248  exe_def
7500f0df856ebd0865eb147239172e4e376af248  exe_def_i
7500f0df856ebd0865eb147239172e4e376af248  exe_macro

test.sh

#!/bin/bash
set -e -x

cat <<EOF >test.cr

  def set_bit(value, bit)
    (value | 1 << bit)
  end

  p set_bit(4, 4)
EOF
crystal build --release test.cr -o exe_def

cat <<EOF >test.cr
  @[AlwaysInline]
  def set_bit(value, bit)
    (value | 1 << bit)
  end

  p set_bit(4, 4)
EOF
crystal build --release test.cr -o exe_def_i

cat <<EOF >test.cr

  macro set_bit(value, bit)
    ({{value}} | 1 << {{bit}})
  end

  p set_bit(4, 4)
EOF
crystal build --release test.cr -o exe_macro

rm test.cr

sha1sum exe*