[RFC] Thoughts on reordering the source tree

[Richard Kenner]

I'm in favor of such a reorganization, but would suggest:

(1) tree-* to go to gcc/tree-opt

(2) Not distinguish between the various rtl passes (why is sched "code
generation", for example?) and put all in gcc/rtl

(3) Not do this:
> - basic intermediate language support stays in gcc/ or goes to gcc/ir,
> or gcc/tree & gcc/rtl, etc.
but instead put them where they'd belong under the other rules.