[lazard]

The compiler got a bit slower:

https://github.com/golang/go/issues/19386

Those numbers are just for my CLs that fix stack traces but with mid-stack inlining still off. Turning it on makes builds noticeably slower:

    $ time ./make.bash
    real: 45.32s  user: 118.67s  cpu: 5.85s

    $ time GO_GCFLAGS='-l=4' ./make.bash
    real: 64.51s  user: 167.04s  cpu: 7.12s

We'll need to tweak the inlining heuristic to find a good balance between performance, build times, and binary size.

[simonz05]

But then the compiler gets faster once you compile it with these new improvements. Is that accounted for in the issue?

[Sunset]

Please have a switch where I can sacrifice build time for maximum possible runtime benefits.

[chriswarbo]

The compile-time/run-time tradeoff is interesting. Getting the "maximum possible runtime benefits" probably calls for https://en.wikipedia.org/wiki/Superoptimization :)