Auto merge of #125077 - spastorino:add-new-fnsafety-enum2, r=jackh726

Rename Unsafe to Safety

Alternative to #124455, which is to just have one Safety enum to use everywhere, this opens the posibility of adding `ast::Safety::Safe` that's useful for unsafe extern blocks.

This leaves us today with:

```rust
enum ast::Safety {
    Unsafe(Span),
    Default,
    // Safe (going to be added for unsafe extern blocks)
}

enum hir::Safety {
    Unsafe,
    Safe,
}
```

We would convert from `ast::Safety::Default` into the right Safety level according the context.

2 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
index c28b0d644e6..9bf055b1739 100644
--- a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
+++ b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
@@ -276,7 +276,7 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: LocalDefId) -> CodegenFnAttrs {
             sym::target_feature => {
                 if !tcx.is_closure_like(did.to_def_id())
                     && let Some(fn_sig) = fn_sig()
-                    && fn_sig.skip_binder().unsafety() == hir::Unsafety::Normal
+                    && fn_sig.skip_binder().safety() == hir::Safety::Safe
                 {
                     if tcx.sess.target.is_like_wasm || tcx.sess.opts.actually_rustdoc {
                         // The `#[target_feature]` attribute is allowed on
diff --git a/compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs b/compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs
index e9c7606dc5a..07473ee476b 100644
--- a/compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs
+++ b/compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs
@@ -365,7 +365,7 @@ fn push_debuginfo_type_name<'tcx>(
                 }
                 output.push_str(" (*)(");
             } else {
-                output.push_str(sig.unsafety.prefix_str());
+                output.push_str(sig.safety.prefix_str());
 
                 if sig.abi != rustc_target::spec::abi::Abi::Rust {
                     output.push_str("extern \"");