The slot-assignment logic has been changed to associate slots with
function calls, instead of function definitions. In our test case, you
can now see that the calls to `get` are now mapped to $15, $17 and $18.
This change also jiggles some existing tests and improves their
register allocation slightly (!).
One minor hitch here is that there's no FunctionCall node associated
with main() (it's never explicitly called). However, our slot map key
can be any IRNode, and we know main() can't be called by anyone else,
so it's harmless to use the function definition as the key in this case.
(This entry could probably stay out the map entirely if it made a
difference, but I don't think it matters.)
Change-Id: I68a6ff24cbd3a2db77f24126502bd3d11e8c0962
Bug: skia:13011
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/514578
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
