Add infrastructure to query LLVM backend for specific assembly mnemonics
and use it in compiletest to conditionally run tests based on instruction
availability.
This fixes test failures with naked-dead-code-elimination which requires
the `RET` mnemonic.
Co-authored-by: Folkert de Vries <flokkievids@gmail.com>
`span_suggestions` is to provide mutually exclusive suggestions. When it was introduced, we made its behavior be that if a single suggestion is given to it, we present the suggestion inline, otherwise in patch format. Changing this to make all of its uses be verbose, as that is closer in intent of output.
* Move dyn-drop to dyn-keyword
* Reorganize `tests/ui/empty` into specific dirs
remove tests/ui/empty/empty-linkname.rs duplicate of tests/ui/error-codes/E0454.rs
* Move `missing-trait-bounds` to `trait-bound/missing-trait-bounds`
* bless traits/missing-trait-bounds tests
* Move `recursion_limit` to `recursion/recursion_limit`
* Move `version` to `compile-flags`
Pointing out they can set the crate's name is non-actionable:
their problem is they found out how and set it incorrectly.
Remove extraneous information that can only confuse the matter.
Ralf Jung