… of the `msvc_lib` binary

…static-lib-to-dylib`

Show files produced by `--emit foo` in json artifact notifications

Right now it is possible to ask `rustc` to save some intermediate representation into one or more files with `--emit=foo`, but figuring out what exactly was produced is difficult. This pull request adds information about `llvm_ir` and `asm` intermediate files into notifications produced by `--json=artifacts`.

Related discussion: https://internals.rust-lang.org/t/easier-access-to-files-generated-by-emit-foo/20477

Motivation - `cargo-show-asm` parses those intermediate files and presents them in a user friendly way, but right now I have to apply some dirty hacks. Hacks make behavior confusing: hintron/computer-enhance#35

This pull request introduces a new behavior: now `rustc` will emit a new artifact notification for every artifact type user asked to `--emit`, for example for `--emit asm` those will include all the `.s` files.

Most users won't notice this behavior, to be affected by it all of the following must hold:
- user must use `rustc` binary directly (when `cargo` invokes `rustc` - it consumes artifact notifications and doesn't emit anything)
- user must specify both `--emit xxx` and `--json artifacts`
- user must refuse to handle unknown artifact types
- user must disable incremental compilation (or deal with it better than cargo does, or use a workaround like `save-temps`) in order not to hit rust-lang#88829 / rust-lang#89149

…sue-15460, r=jieyouxu

Migrate run make issue 15460

Part of rust-lang#121876.

r? `@jieyouxu`

try-job: x86_64-msvc

Handle all GVN binops in a single place.

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Addresses https://github.com/rust-lang/rust/pull/125359/files#r1608185319
r? `@oli-obk`

rustc_span: Inline some hot functions

Found while benchmarking rust-lang#125829.

…ket-impls, r=GuillaumeGomez

rustdoc: add a regression test for a former blanket impl synthesis ICE

Fixes rust-lang#119792 (also passes in rust-lang#125907 in case you were wondering).

r? rustdoc

…jieyouxu

Create `run-make` `env_var` and `env_var_os` helpers

As mentioned in rust-lang#125886. It's quite useful to know which environment variable failed, so better provide a helper helping with that.

r? `@jieyouxu`

Remove stray "this"