remove a bunch of dead parameters in fn

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -3020,7 +3020,6 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
     /// assignment to `x.f`).
     pub(crate) fn report_illegal_reassignment(
         &mut self,
-        _location: Location,
         (place, span): (Place<'tcx>, Span),
         assigned_span: Span,
         err_place: Place<'tcx>,

compiler/rustc_borrowck/src/lib.rs

@@ -1036,7 +1036,6 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
             self,
             self.infcx.tcx,
             self.body,
-            location,
             (sd, place_span.0),
             &borrow_set,
             |borrow_index| borrows_in_scope.contains(borrow_index),
@@ -2174,7 +2173,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
                 // report the error as an illegal reassignment
                 let init = &self.move_data.inits[init_index];
                 let assigned_span = init.span(self.body);
-                self.report_illegal_reassignment(location, (place, span), assigned_span, place);
+                self.report_illegal_reassignment((place, span), assigned_span, place);
             } else {
                 self.report_mutability_error(place, span, the_place_err, error_access, location)
             }

compiler/rustc_borrowck/src/path_utils.rs

@@ -27,7 +27,6 @@ pub(super) fn each_borrow_involving_path<'tcx, F, I, S>(
     s: &mut S,
     tcx: TyCtxt<'tcx>,
     body: &Body<'tcx>,
-    _location: Location,
     access_place: (AccessDepth, Place<'tcx>),
     borrow_set: &BorrowSet<'tcx>,
     is_candidate: I,

compiler/rustc_borrowck/src/polonius/loan_invalidations.rs

@@ -340,7 +340,6 @@ impl<'cx, 'tcx> LoanInvalidationsGenerator<'cx, 'tcx> {
             self,
             self.tcx,
             self.body,
-            location,
             (sd, place),
             self.borrow_set,
             |_| true,

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -662,7 +662,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
         polonius_output: Option<Rc<PoloniusOutput>>,
     ) -> (Option<ClosureRegionRequirements<'tcx>>, RegionErrors<'tcx>) {
         let mir_def_id = body.source.def_id();
-        self.propagate_constraints(body);
+        self.propagate_constraints();
 
         let mut errors_buffer = RegionErrors::new(infcx.tcx);
 
@@ -716,8 +716,8 @@ impl<'tcx> RegionInferenceContext<'tcx> {
     /// for each region variable until all the constraints are
     /// satisfied. Note that some values may grow **too** large to be
     /// feasible, but we check this later.
-    #[instrument(skip(self, _body), level = "debug")]
-    fn propagate_constraints(&mut self, _body: &Body<'tcx>) {
+    #[instrument(skip(self), level = "debug")]
+    fn propagate_constraints(&mut self) {
         debug!("constraints={:#?}", {
             let mut constraints: Vec<_> = self.outlives_constraints().collect();
             constraints.sort_by_key(|c| (c.sup, c.sub));

compiler/rustc_codegen_cranelift/src/pretty_clif.rs

@@ -151,7 +151,6 @@ impl FuncWriter for &'_ CommentWriter {
     fn write_entity_definition(
         &mut self,
         w: &mut dyn fmt::Write,
-        _func: &Function,
         entity: AnyEntity,
         value: &dyn fmt::Display,
         maybe_fact: Option<&Fact>,

compiler/rustc_codegen_gcc/src/builder.rs

@@ -185,7 +185,7 @@ impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
         Cow::Owned(casted_args)
     }
 
-    fn check_ptr_call<'b>(&mut self, _typ: &str, func_ptr: RValue<'gcc>, args: &'b [RValue<'gcc>]) -> Cow<'b, [RValue<'gcc>]> {
+    fn check_ptr_call<'b>(&mut self, func_ptr: RValue<'gcc>, args: &'b [RValue<'gcc>]) -> Cow<'b, [RValue<'gcc>]> {
         let mut all_args_match = true;
         let mut param_types = vec![];
         let gcc_func = func_ptr.get_type().dyncast_function_ptr_type().expect("function ptr");
@@ -256,7 +256,7 @@ impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
         self.block.get_function()
     }
 
-    fn function_call(&mut self, func: RValue<'gcc>, args: &[RValue<'gcc>], _funclet: Option<&Funclet>) -> RValue<'gcc> {
+    fn function_call(&mut self, func: RValue<'gcc>, args: &[RValue<'gcc>]) -> RValue<'gcc> {
         // TODO(antoyo): remove when the API supports a different type for functions.
         let func: Function<'gcc> = self.cx.rvalue_as_function(func);
         let args = self.check_call("call", func, args);
@@ -299,7 +299,7 @@ impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
             llvm::adjust_intrinsic_arguments(&self, gcc_func, args.into(), &func_name, original_function_name)
         };
         let args_adjusted = args.len() != previous_arg_count;
-        let args = self.check_ptr_call("call", func_ptr, &*args);
+        let args = self.check_ptr_call(func_ptr, &*args);
 
         // gccjit requires to use the result of functions, even when it's not used.
         // That's why we assign the result to a local or call add_eval().
@@ -333,7 +333,7 @@ impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
         }
     }
 
-    pub fn overflow_call(&self, func: Function<'gcc>, args: &[RValue<'gcc>], _funclet: Option<&Funclet>) -> RValue<'gcc> {
+    pub fn overflow_call(&self, func: Function<'gcc>, args: &[RValue<'gcc>]) -> RValue<'gcc> {
         // gccjit requires to use the result of functions, even when it's not used.
         // That's why we assign the result to a local.
         let return_type = self.context.new_type::<bool>();
@@ -1386,7 +1386,7 @@ impl<'a, 'gcc, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'gcc, 'tcx> {
         // FIXME(antoyo): remove when having a proper API.
         let gcc_func = unsafe { std::mem::transmute(func) };
         let call = if self.functions.borrow().values().any(|value| *value == gcc_func) {
-            self.function_call(func, args, funclet)
+            self.function_call(func, args)
         }
         else {
             // If it's a not function that was defined, it's a function pointer.

compiler/rustc_codegen_gcc/src/intrinsic/mod.rs

@@ -934,7 +934,7 @@ impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
                             _ => unreachable!(),
                         };
                     let overflow_func = self.context.get_builtin_function(func_name);
-                    self.overflow_call(overflow_func, &[lhs, rhs, res.get_address(None)], None)
+                    self.overflow_call(overflow_func, &[lhs, rhs, res.get_address(None)])
                 }
                 else {
                     let func_name =
@@ -996,7 +996,7 @@ impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
                             _ => unreachable!(),
                         };
                     let overflow_func = self.context.get_builtin_function(func_name);
-                    self.overflow_call(overflow_func, &[lhs, rhs, res.get_address(None)], None)
+                    self.overflow_call(overflow_func, &[lhs, rhs, res.get_address(None)])
                 }
                 else {
                     let func_name =

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -2542,7 +2542,7 @@ fn add_native_libs_from_crate(
             }
             NativeLibKind::Framework { as_needed } => {
                 if link_dynamic {
-                    cmd.link_framework_by_name(name, verbatim, as_needed.unwrap_or(true))
+                    cmd.link_framework_by_name(name, as_needed.unwrap_or(true))
                 }
             }
             NativeLibKind::RawDylib => {

compiler/rustc_codegen_ssa/src/back/linker.rs

@@ -168,7 +168,7 @@ pub trait Linker {
     fn cmd(&mut self) -> &mut Command;
     fn set_output_kind(&mut self, output_kind: LinkOutputKind, out_filename: &Path);
     fn link_dylib_by_name(&mut self, name: &str, verbatim: bool, as_needed: bool);
-    fn link_framework_by_name(&mut self, _name: &str, _verbatim: bool, _as_needed: bool) {
+    fn link_framework_by_name(&mut self, _name: &str, _as_needed: bool) {
         bug!("framework linked with unsupported linker")
     }
     fn link_staticlib_by_name(
@@ -470,7 +470,7 @@ impl<'a> Linker for GccLinker<'a> {
         }
     }
 
-    fn link_framework_by_name(&mut self, name: &str, _verbatim: bool, as_needed: bool) {
+    fn link_framework_by_name(&mut self, name: &str, as_needed: bool) {
         self.hint_dynamic();
         if !as_needed {
             // FIXME(81490): ld64 as of macOS 11 supports the -needed_framework

compiler/rustc_const_eval/src/interpret/validity.rs

@@ -4,10 +4,8 @@
 //! That's useful because it means other passes (e.g. promotion) can rely on `const`s
 //! to be const-safe.
 
-use std::fmt::Write;
-use std::num::NonZeroUsize;
-
 use either::{Left, Right};
+use std::fmt::Write;
 
 use hir::def::DefKind;
 use rustc_ast::Mutability;
@@ -777,11 +775,7 @@ impl<'rt, 'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> ValueVisitor<'mir, 'tcx, M>
     }
 
     #[inline(always)]
-    fn visit_union(
-        &mut self,
-        op: &OpTy<'tcx, M::Provenance>,
-        _fields: NonZeroUsize,
-    ) -> InterpResult<'tcx> {
+    fn visit_union(&mut self, op: &OpTy<'tcx, M::Provenance>) -> InterpResult<'tcx> {
         // Special check for CTFE validation, preventing `UnsafeCell` inside unions in immutable memory.
         if self.ctfe_mode.is_some_and(|c| !c.allow_immutable_unsafe_cell()) {
             if !op.layout.is_zst() && !op.layout.ty.is_freeze(*self.ecx.tcx, self.ecx.param_env) {

compiler/rustc_const_eval/src/interpret/visitor.rs

@@ -1,16 +1,13 @@
 //! Visitor for a run-time value with a given layout: Traverse enums, structs and other compound
 //! types until we arrive at the leaves, with custom handling for primitive types.
 
+use super::{InterpCx, MPlaceTy, Machine, Projectable};
 use rustc_index::IndexVec;
 use rustc_middle::mir::interpret::InterpResult;
 use rustc_middle::ty;
 use rustc_target::abi::FieldIdx;
 use rustc_target::abi::{FieldsShape, VariantIdx, Variants};
 
-use std::num::NonZeroUsize;
-
-use super::{InterpCx, MPlaceTy, Machine, Projectable};
-
 /// How to traverse a value and what to do when we are at the leaves.
 pub trait ValueVisitor<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>>: Sized {
     type V: Projectable<'tcx, M::Provenance> + From<MPlaceTy<'tcx, M::Provenance>>;
@@ -43,7 +40,7 @@ pub trait ValueVisitor<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>>: Sized {
     }
     /// Visits the given value as a union. No automatic recursion can happen here.
     #[inline(always)]
-    fn visit_union(&mut self, _v: &Self::V, _fields: NonZeroUsize) -> InterpResult<'tcx> {
+    fn visit_union(&mut self, _v: &Self::V) -> InterpResult<'tcx> {
         Ok(())
     }
     /// Visits the given value as the pointer of a `Box`. There is nothing to recurse into.
@@ -159,8 +156,8 @@ pub trait ValueVisitor<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>>: Sized {
         // Visit the fields of this value.
         match &v.layout().fields {
             FieldsShape::Primitive => {}
-            &FieldsShape::Union(fields) => {
-                self.visit_union(v, fields)?;
+            &FieldsShape::Union(_fields) => {
+                self.visit_union(v)?;
             }
             FieldsShape::Arbitrary { offsets, memory_index } => {
                 for idx in 0..offsets.len() {

compiler/rustc_const_eval/src/transform/check_consts/resolver.rs

@@ -96,7 +96,7 @@ where
         });
     }
 
-    fn address_of_allows_mutation(&self, _mt: mir::Mutability, _place: mir::Place<'tcx>) -> bool {
+    fn address_of_allows_mutation(&self) -> bool {
         // Exact set of permissions granted by AddressOf is undecided. Conservatively assume that
         // it might allow mutation until resolution of #56604.
         true
@@ -171,10 +171,8 @@ where
         self.super_rvalue(rvalue, location);
 
         match rvalue {
-            mir::Rvalue::AddressOf(mt, borrowed_place) => {
-                if !borrowed_place.is_indirect()
-                    && self.address_of_allows_mutation(*mt, *borrowed_place)
-                {
+            mir::Rvalue::AddressOf(_mt, borrowed_place) => {
+                if !borrowed_place.is_indirect() && self.address_of_allows_mutation() {
                     let place_ty = borrowed_place.ty(self.ccx.body, self.ccx.tcx).ty;
                     if Q::in_any_value_of_ty(self.ccx, place_ty) {
                         self.state.qualif.insert(borrowed_place.local);

compiler/rustc_hir_analysis/src/check/region.rs

@@ -16,7 +16,6 @@ use rustc_index::Idx;
 use rustc_middle::middle::region::*;
 use rustc_middle::ty::TyCtxt;
 use rustc_span::source_map;
-use rustc_span::Span;
 
 use super::errs::{maybe_expr_static_mut, maybe_stmt_static_mut};
 
@@ -72,11 +71,7 @@ struct RegionResolutionVisitor<'tcx> {
 }
 
 /// Records the lifetime of a local variable as `cx.var_parent`
-fn record_var_lifetime(
-    visitor: &mut RegionResolutionVisitor<'_>,
-    var_id: hir::ItemLocalId,
-    _sp: Span,
-) {
+fn record_var_lifetime(visitor: &mut RegionResolutionVisitor<'_>, var_id: hir::ItemLocalId) {
     match visitor.cx.var_parent {
         None => {
             // this can happen in extern fn declarations like
@@ -210,7 +205,7 @@ fn resolve_pat<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, pat: &'tcx hir
 
     // If this is a binding then record the lifetime of that binding.
     if let PatKind::Binding(..) = pat.kind {
-        record_var_lifetime(visitor, pat.hir_id.local_id, pat.span);
+        record_var_lifetime(visitor, pat.hir_id.local_id);
     }
 
     debug!("resolve_pat - pre-increment {} pat = {:?}", visitor.expr_and_pat_count, pat);

compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs

@@ -425,9 +425,7 @@ fn check_predicates<'tcx>(
 
     let mut res = Ok(());
     for (clause, span) in impl1_predicates {
-        if !impl2_predicates
-            .iter()
-            .any(|pred2| trait_predicates_eq(tcx, clause.as_predicate(), *pred2, span))
+        if !impl2_predicates.iter().any(|pred2| trait_predicates_eq(clause.as_predicate(), *pred2))
         {
             res = res.and(check_specialization_on(tcx, clause, span))
         }
@@ -459,10 +457,8 @@ fn check_predicates<'tcx>(
 ///
 /// So we make that check in this function and try to raise a helpful error message.
 fn trait_predicates_eq<'tcx>(
-    _tcx: TyCtxt<'tcx>,
     predicate1: ty::Predicate<'tcx>,
     predicate2: ty::Predicate<'tcx>,
-    _span: Span,
 ) -> bool {
     // FIXME(effects)
     predicate1 == predicate2

compiler/rustc_hir_typeck/src/expr.rs

@@ -346,7 +346,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             }
             ExprKind::DropTemps(e) => self.check_expr_with_expectation(e, expected),
             ExprKind::Array(args) => self.check_expr_array(args, expected, expr),
-            ExprKind::ConstBlock(ref block) => self.check_expr_const_block(block, expected, expr),
+            ExprKind::ConstBlock(ref block) => self.check_expr_const_block(block, expected),
             ExprKind::Repeat(element, ref count) => {
                 self.check_expr_repeat(element, count, expected, expr)
             }
@@ -1493,7 +1493,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         &self,
         block: &'tcx hir::ConstBlock,
         expected: Expectation<'tcx>,
-        _expr: &'tcx hir::Expr<'tcx>,
     ) -> Ty<'tcx> {
         let body = self.tcx.hir().body(block.body);
 

compiler/rustc_hir_typeck/src/expr_use_visitor.rs

@@ -142,7 +142,7 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> {
             let param_ty = return_if_err!(self.mc.pat_ty_adjusted(param.pat));
             debug!("consume_body: param_ty = {:?}", param_ty);
 
-            let param_place = self.mc.cat_rvalue(param.hir_id, param.pat.span, param_ty);
+            let param_place = self.mc.cat_rvalue(param.hir_id, param_ty);
 
             self.walk_irrefutable_pat(&param_place, param.pat);
         }

compiler/rustc_hir_typeck/src/mem_categorization.rs

@@ -273,7 +273,7 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
                         deref.region,
                         ty::TypeAndMut { ty: target, mutbl: deref.mutbl },
                     );
-                    self.cat_rvalue(expr.hir_id, expr.span, ref_ty)
+                    self.cat_rvalue(expr.hir_id, ref_ty)
                 } else {
                     previous()?
                 };
@@ -285,7 +285,7 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
             | adjustment::Adjust::Borrow(_)
             | adjustment::Adjust::DynStar => {
                 // Result is an rvalue.
-                Ok(self.cat_rvalue(expr.hir_id, expr.span, target))
+                Ok(self.cat_rvalue(expr.hir_id, target))
             }
         }
     }
@@ -374,7 +374,7 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
             | hir::ExprKind::Repeat(..)
             | hir::ExprKind::InlineAsm(..)
             | hir::ExprKind::OffsetOf(..)
-            | hir::ExprKind::Err(_) => Ok(self.cat_rvalue(expr.hir_id, expr.span, expr_ty)),
+            | hir::ExprKind::Err(_) => Ok(self.cat_rvalue(expr.hir_id, expr_ty)),
         }
     }
 
@@ -396,7 +396,7 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
                 | DefKind::AssocFn,
                 _,
             )
-            | Res::SelfCtor(..) => Ok(self.cat_rvalue(hir_id, span, expr_ty)),
+            | Res::SelfCtor(..) => Ok(self.cat_rvalue(hir_id, expr_ty)),
 
             Res::Def(DefKind::Static(_), _) => {
                 Ok(PlaceWithHirId::new(hir_id, expr_ty, PlaceBase::StaticItem, Vec::new()))
@@ -433,13 +433,7 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
     }
 
     #[instrument(level = "debug", skip(self), ret)]
-    pub(crate) fn cat_rvalue(
-        &self,
-        hir_id: hir::HirId,
-        // FIXME: remove
-        _span: Span,
-        expr_ty: Ty<'tcx>,
-    ) -> PlaceWithHirId<'tcx> {
+    pub(crate) fn cat_rvalue(&self, hir_id: hir::HirId, expr_ty: Ty<'tcx>) -> PlaceWithHirId<'tcx> {
         PlaceWithHirId::new(hir_id, expr_ty, PlaceBase::Rvalue, Vec::new())
     }
 
@@ -487,7 +481,7 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
         };
         let ref_ty = Ty::new_ref(self.tcx(), region, ty::TypeAndMut { ty: place_ty, mutbl });
 
-        let base = self.cat_rvalue(expr.hir_id, expr.span, ref_ty);
+        let base = self.cat_rvalue(expr.hir_id, ref_ty);
         self.cat_deref(expr, base)
     }