[Teongot]

An excellent bug report for a compiler would

* have reduced source code for the example, preferably a single source file, in a form which can be compiled

* have the exact command line used to build it

* have the exact compiler version being used

* apply to a supported version of the compiler (GCC 5 is from 2015...)

* include an accurate explanation of what is wrong with the generated code

Maybe the last one is covered by this blog post, but things like

> I can maybe understand the subtraction of constant 0, if there’s another code path that jumps to 7ba6

suggests that the author hasn't fully analysed the generated code.

The analysis is OK though and with source code it would be a pretty good bug report.