tree 74ebe386505f66fd330b01747a7003070933c0fb
parent 7fd78ed5b606e64d30ec201de9adce6fdf8856ba
author Aart Bik <ajcbik@google.com> 1540236570 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1540236570 +0000

[vm/compiler] Use loop framework for register allocator

Rationale:
Rather than relying on a separate loop detector, rely
on the new loop framework, which avoids code duplication
and ensures any improvement in loop detection/handling
will benefit this phase too. Note, most of the time, the
same loops are discovered with a few exceptions (which
is okay, since this is "just" heuristic usage). This CL
also simplifies loop detection a bit.

https://github.com/dart-lang/sdk/issues/34473

Change-Id: I1a1b19b99a698c74822473d2a1fe370287c1ade4
Reviewed-on: https://dart-review.googlesource.com/c/80523
Commit-Queue: Aart Bik <ajcbik@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>