Auto merge of #132184 - jieyouxu:rollup-81ht12w, r=jieyouxu

Rollup of 5 pull requests

Successful merges:

 - #132124 (coverage: Consolidate creation of covmap/covfun records)
 - #132140 (Enable LSX feature for LoongArch Linux targets)
 - #132169 (Deny calls to non-`#[const_trait]` methods in MIR constck)
 - #132174 (x86 target features: make pclmulqdq imply sse2)
 - #132180 (Print unsafety of attribute in AST pretty print)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_ast_pretty/src/pprust/state.rs

@@ -627,6 +627,13 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
 
     fn print_attr_item(&mut self, item: &ast::AttrItem, span: Span) {
         self.ibox(0);
+        match item.unsafety {
+            ast::Safety::Unsafe(_) => {
+                self.word("unsafe");
+                self.popen();
+            }
+            ast::Safety::Default | ast::Safety::Safe(_) => {}
+        }
         match &item.args {
             AttrArgs::Delimited(DelimArgs { dspan: _, delim, tokens }) => self.print_mac_common(
                 Some(MacHeader::Path(&item.path)),
@@ -655,6 +662,10 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
                 self.word(token_str);
             }
         }
+        match item.unsafety {
+            ast::Safety::Unsafe(_) => self.pclose(),
+            ast::Safety::Default | ast::Safety::Safe(_) => {}
+        }
         self.end();
     }
 

compiler/rustc_codegen_llvm/src/context.rs

@@ -80,6 +80,7 @@ pub(crate) struct CodegenCx<'ll, 'tcx> {
 
     pub isize_ty: &'ll Type,
 
+    /// Extra codegen state needed when coverage instrumentation is enabled.
     pub coverage_cx: Option<coverageinfo::CrateCoverageContext<'ll, 'tcx>>,
     pub dbg_cx: Option<debuginfo::CodegenUnitDebugContext<'ll, 'tcx>>,
 
@@ -592,11 +593,10 @@ impl<'ll, 'tcx> CodegenCx<'ll, 'tcx> {
         &self.statics_to_rauw
     }
 
+    /// Extra state that is only available when coverage instrumentation is enabled.
     #[inline]
-    pub(crate) fn coverage_context(
-        &self,
-    ) -> Option<&coverageinfo::CrateCoverageContext<'ll, 'tcx>> {
-        self.coverage_cx.as_ref()
+    pub(crate) fn coverage_cx(&self) -> &coverageinfo::CrateCoverageContext<'ll, 'tcx> {
+        self.coverage_cx.as_ref().expect("only called when coverage instrumentation is enabled")
     }
 
     pub(crate) fn create_used_variable_impl(&self, name: &'static CStr, values: &[&'ll Value]) {