bors 039d887928 Auto merge of #119911 - NCGThompson:is-statically-known, r=oli-obk ... Replacement of #114390: Add new intrinsic `is_var_statically_known` and optimize pow for powers of two This adds a new intrinsic `is_val_statically_known` that lowers to [``@llvm.is.constant.*`](https://llvm.org/docs/LangRef.html#llvm-is-constant-intrinsic).` It also applies the intrinsic in the int_pow methods to recognize and optimize the idiom `2isize.pow(x)`. See #114390 for more discussion. While I have extended the scope of the power of two optimization from #114390, I haven't added any new uses for the intrinsic. That can be done in later pull requests. Note: When testing or using the library, be sure to use `--stage 1` or higher. Otherwise, the intrinsic will be a noop and the doctests will be skipped. If you are trying out edits, you may be interested in [`--keep-stage 0`](https://rustc-dev-guide.rust-lang.org/building/suggested.html#faster-builds-with---keep-stage). Fixes #47234 Resolves #114390 `@Centri3`		2024-01-25 05:16:53 +00:00
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src	Auto merge of #119911 - NCGThompson:is-statically-known, r=oli-obk	2024-01-25 05:16:53 +00:00
Cargo.toml	Clean up rustc_*/Cargo.toml.	2023-10-30 08:46:02 +11:00