LLVM 16 has moved Triple.h from ADT and into TargetParser

…u-UwU, r=cjgillot

Remove `arena_cache` modifier from `upstream_monomorphizations_for`

Arena-caching a pointer is pretty meaningless as far as I can tell.

Avoid locking the global context across the `after_expansion` callback

r? `@petrochenkov`

This was noticed in model-checking/kani#2184 (comment)

This didn't have a perf impact, as it's just an additional 2 or 3 RefCell locks being created.

…ust_fulfillment_errors, r=compiler-errors

Split fn_ctxt/adjust_fulfillment_errors from fn_ctxt/checks

This is a follow-up from rust-lang#106477, addressing a small number of the `FIXME`s that were added, by moving some functions into the new(er) `adjust_fulfillment_errors` module.

More cleanup is possible for this file (and I'll hopefully get around to doing some of that soon) but the very first thing is to just move these functions out.

There should be no "real" changes in this PR, besides minor adjustments to imports and the functions being transferred.

…chaelwoerister

allow quick-edit convenience

…omez

make more readable

remove binder from query constraints

r? types

…oli-obk

miri: fix ICE when running out of address space

Fixes rust-lang/miri#2769
r? `@oli-obk`

I didn't add a test since that requires oli-obk/ui_test#38 (host must be 64bit and target 32bit). Also the test takes ~30s, so I am not sure if we want to have it in the test suite?

llvm-16: Use Triple.h from new header location.

LLVM 16 has moved Triple.h from ADT and into TargetParser.

LLVM [landed a commit](llvm/llvm-project@62c7f03) this morning moving the header. This change should make rustc continue to build against LLVM main.