mbutrovich commented on PR #7420:
URL: https://github.com/apache/arrow-rs/pull/7420#issuecomment-2815768881

   > Thanks for checking! I wonder, is this screenshot from Compiler Explorer 
or a local tool?
   
   It's [Beyond Compare](https://www.scootersoftware.com) but you can use your 
diff tool of choice with the two .txt dumps of the machine code. I use 
[cargo-show-asm](https://github.com/pacak/cargo-show-asm) to generate the 
relevant snippets of code.
   
   For example, `cargo asm -p arrow-select --lib --simplify` shows all the 
functions, and then I look for `interleave_primitive`. It was function 934 so I 
did `cargo asm -p arrow-select --lib --simplify 934 > ~/Desktop/pr.txt` to get 
the pr.txt file. You may need to add the `--context` argument if your function 
calls it other functions, or look for functions that call your function if it's 
been inlined.


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