Add CodeGen options to optimize for size.
Add CodeGen options to annotate functions with the attributes OptimizeSize and/or MinSize used by LLVM to reduce .text size.
Closes#32296
The compiler created a directory as part of `-Z incremental` but that may be
hierarchically used concurrently so we need to protect ourselves against that.
Fix alloc_jemalloc on windows gnu targets
jemalloc prefixes the symbols by default on Windows so we need to account
for that to avoid link errors such as: `undefined reference to 'mallocx'`
when using alloc_jemalloc.
There is now a CoreEmitter that everything desugars to, but without
losing any information. Also remove RenderSpan::FileLine. This lets the
rustc_driver tests build.
The extra filename and line was mainly there to keep the indentation
relative to the main snippet; now that this doesn't include
filename/line-number as a prefix, it is distracted.
This API pulls the "expected type foo, found type bar" out after the
main snippet. There are some other places where it makes sense, but this
is a start.
Major changes:
- Remove old snippet rendering code and use the new stuff.
- Introduce `span_label` method to add a label
- Remove EndSpan mode and replace with a fn to get the last
character of a span.
- Stop using `Option<MultiSpan>` and just use an empty `MultiSpan`
- and probably a bunch of other stuff :)
MultiSpan model is now:
- set of primary spans
- set of span+label pairs
Primary spans render with `^^^`, secondary spans with `---`.
Labels are placed next to the `^^^` or `---` marker as appropriate.
This should fix#31754 and follow-up #25343. Before the latter, the
closure was visited twice in the context of the enclosing fn, which
made even a single closure with a loop label emit a warning.
With this change, the closure is still visited within the context
of the main fn (which is intended, since it is not a separate item)
but resets the found loop labels while being visited.
Fixes: #31754
There was no span available in the cast function, but we need to infer the `x` in `x as char` to `u8`.
The spans are now removed from all functions using `infer` and instead added in `eval_const_expr_partial`
