Later in this stack, as the nonzero_integers macro is going to be
responsible for producing a larger fraction of the API for the NonZero
integer types, it will need to receive a number of additional arguments
beyond the ones currently seen here.
Additional arguments, especially named arguments across multiple lines,
will turn out clearer if everything in one macro call is for the same
NonZero type.
This commit adopts a similar arrangement to what we do for generating
the API of the integer primitives (`impl u8` etc), which also generate a
single type's API per top-level macro call, rather than generating all
12 impl blocks for the 12 types from one macro call.
This way all the other macros defined in this module, such as
nonzero_leading_trailing_zeros, are available to call within the expansion of
nonzero_integers.
(Macros defined by macro_rules cannot be called from the same module above the
location of the macro_rules.)
In this commit the ability to call things like nonzero_leading_trailing_zeros is
not immediately used, but later commits in this stack will be consolidating the
entire API of NonZeroT to be generated through nonzero_integers, and will need
to make use of some of the other macros to do that.
Move personality implementation out of PAL
The module already follows the new convention described in #117276. This PR also includes a small fix in the tidy pal check, that was just an oversight in #117285.
Move platform modules into `sys::pal`
This is the initial step of #117276. `sys` just re-exports everything from the current `sys` for now, I'll move the implementations for the individual features one-by-one after this PR merges.
libtest: Fix padding of benchmarks run as tests
### Summary
The first commit adds regression tests for libtest padding.
The second commit fixes padding for benches run as tests and updates the blessed output of the regression tests to make it clear what effect the fix has on padding.
Closes#104092 which is **E-help-wanted** and **regression-from-stable-to-stable**
### More details
Before this fix we applied padding _before_ manually doing what `convert_benchmarks_to_tests()` does which affects padding calculations. Instead use `convert_benchmarks_to_tests()` first if applicable and then apply padding afterwards so it becomes correct.
Benches should only be padded when run as benches to make it easy to compare the benchmark numbers. Not when run as tests.
r? `@ghost` until CI passes.
Add Benchmarks for int_pow Methods.
There is quite a bit of room for improvement in performance of the `int_pow` family of methods. I added benchmarks for those functions. In particular, there are benchmarks for small compile-time bases to measure the effect of #114390. ~~I added a lot (245), but all but 22 of them are marked with `#[ignore]`. There are a lot of macros, and I would appreciate feedback on how to simplify them.~~
~~To run benches relevant to #114390, use `./x bench core --stage 1 -- pow_base_const --include-ignored`.~~
