Rollup of 5 pull requests

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -2147,6 +2147,18 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
                         }
                     }
 
+                    CastKind::PointerAddress => {
+                        let ty_from = op.ty(body, tcx);
+                        let cast_ty_from = CastTy::from_ty(ty_from);
+                        let cast_ty_to = CastTy::from_ty(*ty);
+                        match (cast_ty_from, cast_ty_to) {
+                            (Some(CastTy::Ptr(_) | CastTy::FnPtr), Some(CastTy::Int(_))) => (),
+                            _ => {
+                                span_mirbug!(self, rvalue, "Invalid cast {:?} -> {:?}", ty_from, ty)
+                            }
+                        }
+                    }
+
                     CastKind::Misc => {
                         let ty_from = op.ty(body, tcx);
                         let cast_ty_from = CastTy::from_ty(ty_from);
@@ -2155,16 +2167,18 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
                             (None, _)
                             | (_, None | Some(CastTy::FnPtr))
                             | (Some(CastTy::Float), Some(CastTy::Ptr(_)))
-                            | (Some(CastTy::Ptr(_) | CastTy::FnPtr), Some(CastTy::Float)) => {
+                            | (
+                                Some(CastTy::Ptr(_) | CastTy::FnPtr),
+                                Some(CastTy::Float | CastTy::Int(_)),
+                            ) => {
                                 span_mirbug!(self, rvalue, "Invalid cast {:?} -> {:?}", ty_from, ty,)
                             }
                             (
                                 Some(CastTy::Int(_)),
                                 Some(CastTy::Int(_) | CastTy::Float | CastTy::Ptr(_)),
                             )
                             | (Some(CastTy::Float), Some(CastTy::Int(_) | CastTy::Float))
-                            | (Some(CastTy::Ptr(_)), Some(CastTy::Int(_) | CastTy::Ptr(_)))
-                            | (Some(CastTy::FnPtr), Some(CastTy::Int(_) | CastTy::Ptr(_))) => (),
+                            | (Some(CastTy::Ptr(_) | CastTy::FnPtr), Some(CastTy::Ptr(_))) => (),
                         }
                     }
                 }

compiler/rustc_codegen_cranelift/src/base.rs

@@ -607,7 +607,7 @@ fn codegen_stmt<'tcx>(
                     let operand = codegen_operand(fx, operand);
                     lval.write_cvalue(fx, operand.cast_pointer_to(to_layout));
                 }
-                Rvalue::Cast(CastKind::Misc, ref operand, to_ty) => {
+                Rvalue::Cast(CastKind::Misc | CastKind::PointerAddress, ref operand, to_ty) => {
                     let operand = codegen_operand(fx, operand);
                     let from_ty = operand.layout().ty;
                     let to_ty = fx.monomorphize(to_ty);

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -1952,7 +1952,7 @@ fn linker_with_args<'a, B: ArchiveBuilder<'a>>(
         add_local_native_libraries(cmd, sess, codegen_results);
     }
 
-    // Upstream rust libraries and their nobundle static libraries
+    // Upstream rust libraries and their non-bundled static libraries
     add_upstream_rust_crates::<B>(cmd, sess, codegen_results, crate_type, tmpdir);
 
     // Upstream dynamic native libraries linked with `#[link]` attributes at and `-l`
@@ -2237,7 +2237,7 @@ fn add_local_native_libraries(
     }
 }
 
-/// # Linking Rust crates and their nobundle static libraries
+/// # Linking Rust crates and their non-bundled static libraries
 ///
 /// Rust crates are not considered at all when creating an rlib output. All dependencies will be
 /// linked when producing the final output (instead of the intermediate rlib version).

compiler/rustc_codegen_ssa/src/mir/rvalue.rs

@@ -181,6 +181,13 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 let cast = bx.cx().layout_of(self.monomorphize(mir_cast_ty));
 
                 let val = match *kind {
+                    mir::CastKind::PointerAddress => {
+                        assert!(bx.cx().is_backend_immediate(cast));
+                        let llptr = operand.immediate();
+                        let llcast_ty = bx.cx().immediate_backend_type(cast);
+                        let lladdr = bx.ptrtoint(llptr, llcast_ty);
+                        OperandValue::Immediate(lladdr)
+                    }
                     mir::CastKind::Pointer(PointerCast::ReifyFnPointer) => {
                         match *operand.layout.ty.kind() {
                             ty::FnDef(def_id, substs) => {
@@ -362,9 +369,6 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                             (CastTy::Ptr(_) | CastTy::FnPtr, CastTy::Ptr(_)) => {
                                 bx.pointercast(llval, ll_t_out)
                             }
-                            (CastTy::Ptr(_) | CastTy::FnPtr, CastTy::Int(_)) => {
-                                bx.ptrtoint(llval, ll_t_out)
-                            }
                             (CastTy::Int(_), CastTy::Ptr(_)) => {
                                 let usize_llval = bx.intcast(llval, bx.cx().type_isize(), signed);
                                 bx.inttoptr(usize_llval, ll_t_out)

compiler/rustc_const_eval/src/interpret/cast.rs

@@ -1,3 +1,4 @@
+use std::assert_matches::assert_matches;
 use std::convert::TryFrom;
 
 use rustc_apfloat::ieee::{Double, Single};
@@ -30,6 +31,12 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
                 self.unsize_into(src, cast_ty, dest)?;
             }
 
+            PointerAddress => {
+                let src = self.read_immediate(src)?;
+                let res = self.pointer_address_cast(&src, cast_ty)?;
+                self.write_immediate(res, dest)?;
+            }
+
             Misc => {
                 let src = self.read_immediate(src)?;
                 let res = self.misc_cast(&src, cast_ty)?;
@@ -174,23 +181,23 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
 
         // # The remaining source values are scalar and "int-like".
         let scalar = src.to_scalar()?;
+        Ok(self.cast_from_int_like(scalar, src.layout, cast_ty)?.into())
+    }
 
-        // If we are casting from a pointer to something
-        // that is not a pointer, mark the pointer as exposed
-        if src.layout.ty.is_any_ptr() && !cast_ty.is_any_ptr() {
-            let ptr = self.scalar_to_ptr(scalar)?;
-
-            match ptr.into_pointer_or_addr() {
-                Ok(ptr) => {
-                    M::expose_ptr(self, ptr)?;
-                }
-                Err(_) => {
-                    // do nothing, exposing an invalid pointer
-                    // has no meaning
-                }
-            };
-        }
+    pub fn pointer_address_cast(
+        &mut self,
+        src: &ImmTy<'tcx, M::PointerTag>,
+        cast_ty: Ty<'tcx>,
+    ) -> InterpResult<'tcx, Immediate<M::PointerTag>> {
+        assert_matches!(src.layout.ty.kind(), ty::RawPtr(_) | ty::FnPtr(_));
+        assert!(cast_ty.is_integral());
 
+        let scalar = src.to_scalar()?;
+        let ptr = self.scalar_to_ptr(scalar)?;
+        match ptr.into_pointer_or_addr() {
+            Ok(ptr) => M::expose_ptr(self, ptr)?,
+            Err(_) => {} // do nothing, exposing an invalid pointer has no meaning
+        };
         Ok(self.cast_from_int_like(scalar, src.layout, cast_ty)?.into())
     }
 

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

@@ -8,7 +8,6 @@ use rustc_infer::infer::TyCtxtInferExt;
 use rustc_infer::traits::{ImplSource, Obligation, ObligationCause};
 use rustc_middle::mir::visit::{MutatingUseContext, NonMutatingUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::*;
-use rustc_middle::ty::cast::CastTy;
 use rustc_middle::ty::subst::{GenericArgKind, InternalSubsts};
 use rustc_middle::ty::{self, adjustment::PointerCast, Instance, InstanceDef, Ty, TyCtxt};
 use rustc_middle::ty::{Binder, TraitPredicate, TraitRef, TypeFoldable};
@@ -543,16 +542,12 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> {
                 // in the type of any local, which also excludes casts).
             }
 
-            Rvalue::Cast(CastKind::Misc, ref operand, cast_ty) => {
-                let operand_ty = operand.ty(self.body, self.tcx);
-                let cast_in = CastTy::from_ty(operand_ty).expect("bad input type for cast");
-                let cast_out = CastTy::from_ty(cast_ty).expect("bad output type for cast");
-
-                if let (CastTy::Ptr(_) | CastTy::FnPtr, CastTy::Int(_)) = (cast_in, cast_out) {
-                    self.check_op(ops::RawPtrToIntCast);
-                }
+            Rvalue::Cast(CastKind::PointerAddress, _, _) => {
+                self.check_op(ops::RawPtrToIntCast);
             }
 
+            Rvalue::Cast(CastKind::Misc, _, _) => {}
+
             Rvalue::NullaryOp(NullOp::SizeOf | NullOp::AlignOf, _) => {}
             Rvalue::ShallowInitBox(_, _) => {}
 

compiler/rustc_const_eval/src/transform/promote_consts.rs

@@ -16,7 +16,6 @@ use rustc_hir as hir;
 use rustc_middle::mir::traversal::ReversePostorderIter;
 use rustc_middle::mir::visit::{MutVisitor, MutatingUseContext, PlaceContext, Visitor};
 use rustc_middle::mir::*;
-use rustc_middle::ty::cast::CastTy;
 use rustc_middle::ty::subst::InternalSubsts;
 use rustc_middle::ty::{self, List, TyCtxt, TypeFoldable};
 use rustc_span::Span;
@@ -502,18 +501,11 @@ impl<'tcx> Validator<'_, 'tcx> {
 
             Rvalue::ThreadLocalRef(_) => return Err(Unpromotable),
 
-            Rvalue::Cast(kind, operand, cast_ty) => {
-                if matches!(kind, CastKind::Misc) {
-                    let operand_ty = operand.ty(self.body, self.tcx);
-                    let cast_in = CastTy::from_ty(operand_ty).expect("bad input type for cast");
-                    let cast_out = CastTy::from_ty(*cast_ty).expect("bad output type for cast");
-                    if let (CastTy::Ptr(_) | CastTy::FnPtr, CastTy::Int(_)) = (cast_in, cast_out) {
-                        // ptr-to-int casts are not possible in consts and thus not promotable
-                        return Err(Unpromotable);
-                    }
-                    // int-to-ptr casts are fine, they just use the integer value at pointer type.
-                }
+            // ptr-to-int casts are not possible in consts and thus not promotable
+            Rvalue::Cast(CastKind::PointerAddress, _, _) => return Err(Unpromotable),
 
+            // int-to-ptr casts are fine, they just use the integer value at pointer type.
+            Rvalue::Cast(_, operand, _) => {
                 self.validate_operand(operand)?;
             }
 

compiler/rustc_error_codes/src/error_codes/E0060.md

@@ -16,10 +16,10 @@ Using this declaration, it must be called with at least one argument, so
 simply calling `printf()` is invalid. But the following uses are allowed:
 
 ```
-# #![feature(static_nobundle)]
 # use std::os::raw::{c_char, c_int};
 # #[cfg_attr(all(windows, target_env = "msvc"),
-#            link(name = "legacy_stdio_definitions", kind = "static-nobundle"))]
+#            link(name = "legacy_stdio_definitions",
+#                 kind = "static", modifiers = "-bundle"))]
 # extern "C" { fn printf(_: *const c_char, ...) -> c_int; }
 # fn main() {
 unsafe {

compiler/rustc_feature/src/accepted.rs

@@ -219,6 +219,8 @@ declare_features! (
     (accepted, move_ref_pattern, "1.49.0", Some(68354), None),
     /// Allows specifying modifiers in the link attribute: `#[link(modifiers = "...")]`
     (accepted, native_link_modifiers, "1.61.0", Some(81490), None),
+    /// Allows specifying the bundle link modifier
+    (accepted, native_link_modifiers_bundle, "1.63.0", Some(81490), None),
     /// Allows specifying the whole-archive link modifier
     (accepted, native_link_modifiers_whole_archive, "1.61.0", Some(81490), None),
     /// Allows using `#![no_std]`.

compiler/rustc_feature/src/active.rs

@@ -449,8 +449,6 @@ declare_features! (
     (active, naked_functions, "1.9.0", Some(32408), None),
     /// Allows specifying the as-needed link modifier
     (active, native_link_modifiers_as_needed, "1.53.0", Some(81490), None),
-    /// Allows specifying the bundle link modifier
-    (active, native_link_modifiers_bundle, "1.53.0", Some(81490), None),
     /// Allows specifying the verbatim link modifier
     (active, native_link_modifiers_verbatim, "1.53.0", Some(81490), None),
     /// Allow negative trait implementations.
@@ -500,8 +498,6 @@ declare_features! (
     (active, simd_ffi, "1.0.0", Some(27731), None),
     /// Allows specialization of implementations (RFC 1210).
     (incomplete, specialization, "1.7.0", Some(31844), None),
-    /// Allows `#[link(kind="static-nobundle"...)]`.
-    (active, static_nobundle, "1.16.0", Some(37403), None),
     /// Allows attributes on expressions and non-item statements.
     (active, stmt_expr_attributes, "1.6.0", Some(15701), None),
     /// Allows lints part of the strict provenance effort.

compiler/rustc_feature/src/removed.rs

@@ -169,6 +169,9 @@ declare_features! (
     (removed, sanitizer_runtime, "1.17.0", None, None, None),
     (removed, simd, "1.0.0", Some(27731), None,
      Some("removed in favor of `#[repr(simd)]`")),
+    /// Allows `#[link(kind = "static-nobundle", ...)]`.
+    (removed, static_nobundle, "1.16.0", Some(37403), None,
+     Some(r#"subsumed by `#[link(kind = "static", modifiers = "-bundle", ...)]`"#)),
     (removed, struct_inherit, "1.0.0", None, None, None),
     (removed, test_removed_feature, "1.0.0", None, None, None),
     /// Allows using items which are missing stability attributes

compiler/rustc_metadata/src/native_libs.rs

@@ -97,24 +97,6 @@ impl<'tcx> Collector<'tcx> {
                         let span = item.name_value_literal_span().unwrap();
                         let link_kind = match link_kind.as_str() {
                             "static" => NativeLibKind::Static { bundle: None, whole_archive: None },
-                            "static-nobundle" => {
-                                sess.struct_span_warn(
-                                    span,
-                                    "link kind `static-nobundle` has been superseded by specifying \
-                                     modifier `-bundle` with link kind `static`",
-                                )
-                                .emit();
-                                if !features.static_nobundle {
-                                    feature_err(
-                                        &sess.parse_sess,
-                                        sym::static_nobundle,
-                                        span,
-                                        "link kind `static-nobundle` is unstable",
-                                    )
-                                    .emit();
-                                }
-                                NativeLibKind::Static { bundle: Some(false), whole_archive: None }
-                            }
                             "dylib" => NativeLibKind::Dylib { as_needed: None },
                             "framework" => {
                                 if !sess.target.is_like_osx {
@@ -264,7 +246,6 @@ impl<'tcx> Collector<'tcx> {
                     };
                     match (modifier, &mut kind) {
                         ("bundle", Some(NativeLibKind::Static { bundle, .. })) => {
-                            report_unstable_modifier!(native_link_modifiers_bundle);
                             assign_modifier(bundle)
                         }
                         ("bundle", _) => {

compiler/rustc_middle/src/mir/mod.rs

@@ -2604,9 +2604,19 @@ pub enum Rvalue<'tcx> {
 #[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
 static_assert_size!(Rvalue<'_>, 40);
 
+impl<'tcx> Rvalue<'tcx> {
+    #[inline]
+    pub fn is_pointer_int_cast(&self) -> bool {
+        matches!(self, Rvalue::Cast(CastKind::PointerAddress, _, _))
+    }
+}
+
 #[derive(Clone, Copy, Debug, PartialEq, Eq, TyEncodable, TyDecodable, Hash, HashStable)]
 pub enum CastKind {
     Misc,
+    /// A pointer to address cast. A cast between a pointer and an integer type,
+    /// or between a function pointer and an integer type.
+    PointerAddress,
     Pointer(PointerCast),
 }
 

compiler/rustc_middle/src/mir/tcx.rs

@@ -4,7 +4,6 @@
  */
 
 use crate::mir::*;
-use crate::ty::cast::CastTy;
 use crate::ty::subst::Subst;
 use crate::ty::{self, Ty, TyCtxt};
 use rustc_hir as hir;
@@ -224,22 +223,6 @@ impl<'tcx> Rvalue<'tcx> {
             _ => RvalueInitializationState::Deep,
         }
     }
-
-    pub fn is_pointer_int_cast<D>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> bool
-    where
-        D: HasLocalDecls<'tcx>,
-    {
-        if let Rvalue::Cast(CastKind::Misc, src_op, dest_ty) = self {
-            if let Some(CastTy::Int(_)) = CastTy::from_ty(*dest_ty) {
-                let src_ty = src_op.ty(local_decls, tcx);
-                if let Some(CastTy::FnPtr | CastTy::Ptr(_)) = CastTy::from_ty(src_ty) {
-                    return true;
-                }
-            }
-        }
-
-        false
-    }
 }
 
 impl<'tcx> Operand<'tcx> {

compiler/rustc_mir_build/src/build/expr/as_rvalue.rs

@@ -11,6 +11,7 @@ use rustc_middle::mir::AssertKind;
 use rustc_middle::mir::Place;
 use rustc_middle::mir::*;
 use rustc_middle::thir::*;
+use rustc_middle::ty::cast::CastTy;
 use rustc_middle::ty::{self, Ty, UpvarSubsts};
 use rustc_span::Span;
 
@@ -188,11 +189,19 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                 block.and(Rvalue::Use(Operand::Move(Place::from(result))))
             }
             ExprKind::Cast { source } => {
+                let source = &this.thir[source];
+                let from_ty = CastTy::from_ty(source.ty);
+                let cast_ty = CastTy::from_ty(expr.ty);
+                let cast_kind = match (from_ty, cast_ty) {
+                    (Some(CastTy::Ptr(_) | CastTy::FnPtr), Some(CastTy::Int(_))) => {
+                        CastKind::PointerAddress
+                    }
+                    (_, _) => CastKind::Misc,
+                };
                 let source = unpack!(
-                    block =
-                        this.as_operand(block, scope, &this.thir[source], None, NeedsTemporary::No)
+                    block = this.as_operand(block, scope, source, None, NeedsTemporary::No)
                 );
-                block.and(Rvalue::Cast(CastKind::Misc, source, expr.ty))
+                block.and(Rvalue::Cast(cast_kind, source, expr.ty))
             }
             ExprKind::Pointer { cast, source } => {
                 let source = unpack!(