How Can I Make Go Assembly Output More Readable?

Readable Go Assembly Output

Understanding the assembly code generated by the Go compiler can be crucial for optimizing performance. However, the default output of the -S flag can be difficult to interpret. Here are some methods to make it more accessible:

Output to File:

To save the assembly output to a file instead of printing it to the terminal, use the following command:

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

Separate Functions with Labels:

To separate out the assembly code into individual functions with labels, disable optimization using the -N flag:

go tool compile -S -N file.go

Using gccgo:

Alternatively, you can leverage gccgo with the following command to generate assembly code in an optimized or unoptimized format:

gccgo -S -O0/1/2/3 -masm=intel test.go

By experimenting with different optimization levels (-O0/1/2/3), you can observe the impact of optimizations on the generated assembly code.

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