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bors e5484cec0e Auto merge of #88242 - bonega:allocation_range, r=oli-obk 
Use custom wrap-around type instead of RangeInclusive

Two reasons:

1. More memory is allocated than necessary for `valid_range` in `Scalar`. The range is not used as an iterator and `exhausted` is never used.
2. `contains`, `count` etc. methods in `RangeInclusive` are doing very unhelpful(and dangerous!) things when used as a wrap-around range. - In general this PR wants to limit potentially confusing methods, that have a low probability of working.

Doing a local perf run, every metric shows improvement except for instructions.
Max-rss seem to have a very consistent improvement.

Sorry - newbie here, probably doing something wrong.
2021-08-25 02:17:41 +00:00
..
src Auto merge of #88242 - bonega:allocation_range, r=oli-obk 2021-08-25 02:17:41 +00:00
Cargo.toml Update the backtrace crate in libstd 2021-08-19 07:31:49 -07:00
README.md

README.md

Please read the rustc-dev-guide chapter on Backend Agnostic Codegen.