Hopefully this is a bit more precise and also more correct English.

Fixes rust-lang#54705

When constructing synthetic auto trait impls, we may come across
multiple predicates involving the same type, trait, and substitutions.
Since we can only display one of these, we pick the one with the 'most
strict' lifetime paramters. This ensures that the impl we render the
user is actually valid (that is, a struct matching that impl will
actually implement the auto trait in question).

This commit exapnds the definition of 'more strict' to take into account
inference variables. We always choose a predicate without inference
variables over a predicate with inference variables.

Rustbuild passes `--message-format json` to the compiler invocations
which causes JSON to be emitted on stdout. Printing optimization fuel
messages to stdout breaks the json and causes Rustbuild to fail.

Work around this by emitting optimization fuel related messages on
stderr instead.

It's only used in tests.

This reduces instruction counts on several benchmarks by 0.5--1%.

…d of "-C debuginfo=n"

Accidentally forgotten from rust-lang#54718!

…ep compiletests presumption of JSON.

As a driveby, rename the stdout files to stderr, which should have been part of the earlier commit.

If we're going to emit bitcode (through ThinLTOBuffer), then we
need to ensure that anon globals are named. This was already done
after optimization passes, but also has to happen after LTO passes,
as we always emit the final result in a ThinLTO-compatible manner.

Fixes rust-lang#51947.

This updates lldb to pick up some bug fixes, and makes one minor test
suite fix to account for this.

Slight copy-editing for `std::cell::Cell` docs

Hopefully this is a bit more precise and also more correct English.

Remove unused re import in gdb_rust_pretty_printing

…nkfelix

Choose predicates without inference variables over those with them

Fixes rust-lang#54705

When constructing synthetic auto trait impls, we may come across
multiple predicates involving the same type, trait, and substitutions.
Since we can only display one of these, we pick the one with the 'most
strict' lifetime paramters. This ensures that the impl we render the
user is actually valid (that is, a struct matching that impl will
actually implement the auto trait in question).

This commit exapnds the definition of 'more strict' to take into account
inference variables. We always choose a predicate without inference
variables over a predicate with inference variables.

…ikomatsakis

Don't print opt fuel messages to stdout because it breaks Rustbuild

Rustbuild passes `--message-format json` to the compiler invocations
which causes JSON to be emitted on stdout. Printing optimization fuel
messages to stdout breaks the json and causes Rustbuild to fail.

Work around this by emitting optimization fuel related messages on
stderr instead.

Make `process_obligations`' computation of `completed` optional.

It's only used in tests.

This reduces instruction counts on several benchmarks by 0.5--1%.

…=petrochenkov

Fix feature gate only being checked on first repr attr.

Reported in rust-lang#33158 (comment).

Run name-anon-globals after LTO passes as well

If we're going to emit bitcode (through ThinLTOBuffer), then we need to ensure that anon globals are named. This was already done after optimization passes, but also has to happen after LTO passes, as we always emit the final result in a ThinLTO-compatible manner.

I added the test as `run-make`. The important bit is that we emit bitcode in some way (e.g. `--crate-type rlib` or `--emit=llvm-bc`). Please tell me if there is a better way to test for that.

Fixes rust-lang#51947

Standardised names and location of ui issue tests

None

… r=michaelwoerister

-C remark: fix incorrect warning about requiring "--debuginfo" instead of "-C debuginfo=n"

Previously suggested "--debuginfo" does not actually work.

…ichaelwoerister

Add `aarch64-pc-windows-msvc` to deployed targets

Accidentally forgotten from rust-lang#54718!

Update lldb

This updates lldb to pick up some bug fixes, and makes one minor test
suite fix to account for this.

…=varkor

Use trait impl method span when type param mismatch is due to impl Trait

Fix rust-lang#55374.

refactor: use shorthand fields

refactor: use shorthand for single fields everywhere (excluding tests).

…r=oli-obk

do not print wrapping ranges like normal ranges in validity diagnostics