Rollup merge of rust-lang#140374 - compiler-errors:global_asm-bug, r=lcnr

Resolve instance for SymFn in global/naked asm

`Instance::expect_resolve` ensures that we're actually going from trait item -> impl item.

Fixes rust-lang#140373

Author: GuillaumeGomez

compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs

@@ -1282,7 +1282,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
                     intrinsic.name,
                 );
             }
-            return Err(Instance::new(instance.def_id(), instance.args));
+            return Err(Instance::new_raw(instance.def_id(), instance.args));
         }
     }
 

compiler/rustc_codegen_gcc/src/intrinsic/mod.rs

@@ -399,7 +399,7 @@ impl<'a, 'gcc, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tc
             }
 
             // Fall back to default body
-            _ => return Err(Instance::new(instance.def_id(), instance.args)),
+            _ => return Err(Instance::new_raw(instance.def_id(), instance.args)),
         };
 
         if !fn_abi.ret.is_ignore() {

compiler/rustc_codegen_llvm/src/coverageinfo/mapgen/unused.rs

@@ -157,7 +157,7 @@ fn make_dummy_instance<'tcx>(tcx: TyCtxt<'tcx>, local_def_id: LocalDefId) -> ty:
     let def_id = local_def_id.to_def_id();
 
     // Make a dummy instance that fills in all generics with placeholders.
-    ty::Instance::new(
+    ty::Instance::new_raw(
         def_id,
         ty::GenericArgs::for_item(tcx, def_id, |param, _| {
             if let ty::GenericParamDefKind::Lifetime = param.kind {

compiler/rustc_codegen_llvm/src/intrinsic.rs

@@ -613,7 +613,7 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
             _ => {
                 debug!("unknown intrinsic '{}' -- falling back to default body", name);
                 // Call the fallback body instead of generating the intrinsic code
-                return Err(ty::Instance::new(instance.def_id(), instance.args));
+                return Err(ty::Instance::new_raw(instance.def_id(), instance.args));
             }
         };
 

compiler/rustc_codegen_ssa/src/back/symbol_export.rs

@@ -612,7 +612,7 @@ pub(crate) fn symbol_name_for_instance_in_crate<'tcx>(
         ExportedSymbol::Generic(def_id, args) => {
             rustc_symbol_mangling::symbol_name_for_instance_in_crate(
                 tcx,
-                Instance::new(def_id, args),
+                Instance::new_raw(def_id, args),
                 instantiating_crate,
             )
         }
@@ -660,7 +660,7 @@ fn calling_convention_for_symbol<'tcx>(
             None
         }
         ExportedSymbol::NonGeneric(def_id) => Some(Instance::mono(tcx, def_id)),
-        ExportedSymbol::Generic(def_id, args) => Some(Instance::new(def_id, args)),
+        ExportedSymbol::Generic(def_id, args) => Some(Instance::new_raw(def_id, args)),
         // DropGlue always use the Rust calling convention and thus follow the target's default
         // symbol decoration scheme.
         ExportedSymbol::DropGlue(..) => None,

compiler/rustc_codegen_ssa/src/base.rs

@@ -457,7 +457,13 @@ where
                 rustc_hir::InlineAsmOperand::SymFn { expr } => {
                     let ty = cx.tcx().typeck(item_id.owner_id).expr_ty(expr);
                     let instance = match ty.kind() {
-                        &ty::FnDef(def_id, args) => Instance::new(def_id, args),
+                        &ty::FnDef(def_id, args) => Instance::expect_resolve(
+                            cx.tcx(),
+                            ty::TypingEnv::fully_monomorphized(),
+                            def_id,
+                            args,
+                            expr.span,
+                        ),
                         _ => span_bug!(*op_sp, "asm sym is not a function"),
                     };
 

compiler/rustc_codegen_ssa/src/mir/naked_asm.rs

@@ -95,7 +95,9 @@ fn inline_to_global_operand<'a, 'tcx, Cx: LayoutOf<'tcx, LayoutOfResult = TyAndL
             );
 
             let instance = match mono_type.kind() {
-                &ty::FnDef(def_id, args) => Instance::new(def_id, args),
+                &ty::FnDef(def_id, args) => {
+                    Instance::expect_resolve(cx.tcx(), cx.typing_env(), def_id, args, value.span)
+                }
                 _ => bug!("asm sym is not a function"),
             };
 

compiler/rustc_hir_analysis/src/lib.rs

@@ -216,7 +216,7 @@ pub fn check_crate(tcx: TyCtxt<'_>) {
                 check::maybe_check_static_with_link_section(tcx, item_def_id);
             }
             DefKind::Const if tcx.generics_of(item_def_id).is_empty() => {
-                let instance = ty::Instance::new(item_def_id.into(), ty::GenericArgs::empty());
+                let instance = ty::Instance::new_raw(item_def_id.into(), ty::GenericArgs::empty());
                 let cid = GlobalId { instance, promoted: None };
                 let typing_env = ty::TypingEnv::fully_monomorphized();
                 tcx.ensure_ok().eval_to_const_value_raw(typing_env.as_query_input(cid));

compiler/rustc_lint/src/foreign_modules.rs

@@ -104,7 +104,7 @@ impl ClashingExternDeclarations {
     /// for the item, return its HirId without updating the set.
     fn insert(&mut self, tcx: TyCtxt<'_>, fi: hir::ForeignItemId) -> Option<hir::OwnerId> {
         let did = fi.owner_id.to_def_id();
-        let instance = Instance::new(did, ty::List::identity_for_item(tcx, did));
+        let instance = Instance::new_raw(did, ty::List::identity_for_item(tcx, did));
         let name = Symbol::intern(tcx.symbol_name(instance).name);
         if let Some(&existing_id) = self.seen_decls.get(&name) {
             // Avoid updating the map with the new entry when we do find a collision. We want to

compiler/rustc_middle/src/middle/exported_symbols.rs

@@ -56,7 +56,7 @@ impl<'tcx> ExportedSymbol<'tcx> {
         match *self {
             ExportedSymbol::NonGeneric(def_id) => tcx.symbol_name(ty::Instance::mono(tcx, def_id)),
             ExportedSymbol::Generic(def_id, args) => {
-                tcx.symbol_name(ty::Instance::new(def_id, args))
+                tcx.symbol_name(ty::Instance::new_raw(def_id, args))
             }
             ExportedSymbol::DropGlue(ty) => {
                 tcx.symbol_name(ty::Instance::resolve_drop_in_place(tcx, ty))