Recognize a second operand if its `ToUint32` is `0xFFFFFFFF`,
not just the exact value. This includes fx `& -1`, which is output
by `toUnsigned(32)`.
Change-Id: Ieccb42591efd72b4aae62a7c6e678f05510abdc6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/510960
Reviewed-by: Stephen Adams <sra@google.com>
Commit-Queue: Lasse Nielsen <lrn@google.com>
Lasse R.H. Nielsen
f1fcecc81d