When the instruction being replaced has many uses, it is beneficial to update them together, rather than one at a time.
Also:
- Make value_range_analyer output intermediate state for `--dump-ssa`.
- Remove bounds checks all together at end of range analysis.
- Don't add RangeConversion for the length when the length is a constant.
Compiling a method with 5000 assignments of the form `a[N] = N;` is reduced 20x, from 123 seconds to 6 seconds.
Bug: #56919
Change-Id: I9ca7b41ca156ee40b96cfed9e18369662053b3b7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/390824
Reviewed-by: Nate Biggs <natebiggs@google.com>
Commit-Queue: Stephen Adams <sra@google.com>
Stephen Adams
9062cf4d75