Probably a couple hundred at most, and for common programs several dozen.

kijiki · on April 22, 2021

Tried it out on Debian Bullseye x86_64:

  $ objdump -w -j .text --no-show-raw-insn -d /usr/bin/emacs-gtk | egrep '^ *[0-9]+:' | awk '{print $2}' | sort | uniq | wc -l
  130

  $ objdump -w -j .text --no-show-raw-insn -d /bin/ls | egrep '^ *[0-9]+:' | awk '{print $2}' | sort | uniq | wc -l
  97

  $ objdump -w -j .text --no-show-raw-insn -d firefox-bin | egrep '^ *[0-9]+:' | awk '{print $2}' | sort | uniq | wc -l
  136

flukus · on April 22, 2021

Wow thanks, this is exactly the type of comment I come to HN for.

I wonder if the numbers would change significantly for gentoo or anything compiled manually that had more knowledge of the CPU specifics?

mjsir911 · on April 22, 2021

From my fairly riced gentoo system:

  $ objdump -w -j .text --no-show-raw-insn -d /usr/lib64/firefox/firefox-bin | egrep '^ \*[0-9]+:' | awk '{print $2}' | sort | uniq | wc -l
  134

So actually, less!