Easy to read Golang assembly output?

Question

I\'m interested in examining the x86 assembly output of the standard Go compiler to see if my code is really being converted into reasonably efficient assembly code; hopeful

Answer 1

1. You can redirect the output to a file like this:

    go tool compile -S file.go > file.s
   

2. You can disable the optimization with -N:

    go tool compile -S -N file.go
   

Alternatively, you can use gccgo:

gccgo -S -O0 -masm=intel test.go

which will generate test.s. You can play with the -O0/1/2/3 to see the different optimizations.