Auto merge of #2440 - RalfJung:up, r=RalfJung

rustup

rust-version

@@ -1 +1 @@
-35a061724802377a21fc6dac1ebcbb9b8d1f558a
+7fe022f5aa32bbbb33c3a58755729d6667a461a9

src/machine.rs

@@ -545,11 +545,6 @@ fn enforce_number_init(_ecx: &MiriEvalContext<'mir, 'tcx>) -> bool {
         true
     }
 
-    #[inline(always)]
-    fn enforce_number_no_provenance(_ecx: &MiriEvalContext<'mir, 'tcx>) -> bool {
-        true
-    }
-
     #[inline(always)]
     fn enforce_abi(ecx: &MiriEvalContext<'mir, 'tcx>) -> bool {
         ecx.machine.enforce_abi
@@ -753,14 +748,6 @@ fn ptr_from_addr_cast(
         intptrcast::GlobalStateInner::ptr_from_addr_cast(ecx, addr)
     }
 
-    #[inline(always)]
-    fn ptr_from_addr_transmute(
-        ecx: &MiriEvalContext<'mir, 'tcx>,
-        addr: u64,
-    ) -> Pointer<Option<Self::Provenance>> {
-        intptrcast::GlobalStateInner::ptr_from_addr_transmute(ecx, addr)
-    }
-
     fn expose_ptr(
         ecx: &mut InterpCx<'mir, 'tcx, Self>,
         ptr: Pointer<Self::Provenance>,

src/operator.rs

@@ -57,7 +57,7 @@ fn binary_ptr_op(
 
             Offset => {
                 assert!(left.layout.ty.is_unsafe_ptr());
-                let ptr = self.scalar_to_ptr(left.to_scalar()?)?;
+                let ptr = left.to_scalar()?.to_pointer(self)?;
                 let offset = right.to_scalar()?.to_machine_isize(self)?;
 
                 let pointee_ty =
@@ -71,7 +71,7 @@ fn binary_ptr_op(
             Add | Sub | BitOr | BitAnd | BitXor => {
                 assert!(left.layout.ty.is_unsafe_ptr());
                 assert!(right.layout.ty.is_unsafe_ptr());
-                let ptr = self.scalar_to_ptr(left.to_scalar()?)?;
+                let ptr = left.to_scalar()?.to_pointer(self)?;
                 // We do the actual operation with usize-typed scalars.
                 let left = ImmTy::from_uint(ptr.addr().bytes(), self.machine.layouts.usize);
                 let right = ImmTy::from_uint(

src/shims/intrinsics/simd.rs

@@ -201,7 +201,7 @@ enum Op {
                             this.saturating_arith(mir_op, &left, &right)?
                         }
                         Op::WrappingOffset => {
-                            let ptr = this.scalar_to_ptr(left.to_scalar()?)?;
+                            let ptr = left.to_scalar()?.to_pointer(this)?;
                             let offset_count = right.to_scalar()?.to_machine_isize(this)?;
                             let pointee_ty = left.layout.ty.builtin_deref(true).unwrap().ty;
 

src/shims/panic.rs

@@ -26,7 +26,7 @@
 #[derive(Debug)]
 pub struct CatchUnwindData<'tcx> {
     /// The `catch_fn` callback to call in case of a panic.
-    catch_fn: Scalar<Provenance>,
+    catch_fn: Pointer<Option<Provenance>>,
     /// The `data` argument for that callback.
     data: Scalar<Provenance>,
     /// The return place from the original call to `try`.
@@ -86,7 +86,7 @@ fn handle_try(
         let [try_fn, data, catch_fn] = check_arg_count(args)?;
         let try_fn = this.read_pointer(try_fn)?;
         let data = this.read_scalar(data)?.check_init()?;
-        let catch_fn = this.read_scalar(catch_fn)?.check_init()?;
+        let catch_fn = this.read_pointer(catch_fn)?;
 
         // Now we make a function call, and pass `data` as first and only argument.
         let f_instance = this.get_ptr_fn(try_fn)?.as_instance()?;
@@ -140,8 +140,7 @@ fn handle_stack_pop_unwind(
             let payload = this.active_thread_mut().panic_payload.take().unwrap();
 
             // Push the `catch_fn` stackframe.
-            let f_instance =
-                this.get_ptr_fn(this.scalar_to_ptr(catch_unwind.catch_fn)?)?.as_instance()?;
+            let f_instance = this.get_ptr_fn(catch_unwind.catch_fn)?.as_instance()?;
             trace!("catch_fn: {:?}", f_instance);
             this.call_function(
                 f_instance,

src/shims/tls.rs

@@ -241,15 +241,10 @@ fn schedule_windows_tls_dtors(&mut self) -> InterpResult<'tcx> {
         // (that would be basically https://github.com/rust-lang/miri/issues/450),
         // we specifically look up the static in libstd that we know is placed
         // in that section.
-        let thread_callback = this.eval_path_scalar(&[
-            "std",
-            "sys",
-            "windows",
-            "thread_local_key",
-            "p_thread_callback",
-        ])?;
-        let thread_callback =
-            this.get_ptr_fn(this.scalar_to_ptr(thread_callback)?)?.as_instance()?;
+        let thread_callback = this
+            .eval_path_scalar(&["std", "sys", "windows", "thread_local_key", "p_thread_callback"])?
+            .to_pointer(this)?;
+        let thread_callback = this.get_ptr_fn(thread_callback)?.as_instance()?;
 
         // The signature of this function is `unsafe extern "system" fn(h: c::LPVOID, dwReason: c::DWORD, pv: c::LPVOID)`.
         let reason = this.eval_path_scalar(&["std", "sys", "windows", "c", "DLL_THREAD_DETACH"])?;

src/shims/unix/linux/sync.rs

@@ -121,7 +121,7 @@ pub fn futex<'tcx>(
             // The API requires `addr` to be a 4-byte aligned pointer, and will
             // use the 4 bytes at the given address as an (atomic) i32.
             this.check_ptr_access_align(
-                this.scalar_to_ptr(addr_scalar)?,
+                addr_scalar.to_pointer(this)?,
                 Size::from_bytes(4),
                 Align::from_bytes(4).unwrap(),
                 CheckInAllocMsg::MemoryAccessTest,