remove now-unused ScalarMaybeUninit

Author: RalfJung

compiler/rustc_middle/src/mir/interpret/mod.rs

@@ -124,7 +124,7 @@ pub use self::error::{
     UninitBytesAccess, UnsupportedOpInfo,
 };
 
-pub use self::value::{get_slice_bytes, ConstAlloc, ConstValue, Scalar, ScalarMaybeUninit};
+pub use self::value::{get_slice_bytes, ConstAlloc, ConstValue, Scalar};
 
 pub use self::allocation::{
     alloc_range, AllocRange, Allocation, ConstAllocation, InitChunk, InitChunkIter, InitMask,

compiler/rustc_middle/src/mir/interpret/value.rs

@@ -504,139 +504,6 @@ impl<'tcx, Prov: Provenance> Scalar<Prov> {
     }
 }
 
-#[derive(Clone, Copy, Eq, PartialEq, TyEncodable, TyDecodable, HashStable, Hash)]
-pub enum ScalarMaybeUninit<Prov = AllocId> {
-    Scalar(Scalar<Prov>),
-    Uninit,
-}
-
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
-static_assert_size!(ScalarMaybeUninit, 24);
-
-impl<Prov> From<Scalar<Prov>> for ScalarMaybeUninit<Prov> {
-    #[inline(always)]
-    fn from(s: Scalar<Prov>) -> Self {
-        ScalarMaybeUninit::Scalar(s)
-    }
-}
-
-// We want the `Debug` output to be readable as it is used by `derive(Debug)` for
-// all the Miri types.
-impl<Prov: Provenance> fmt::Debug for ScalarMaybeUninit<Prov> {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            ScalarMaybeUninit::Uninit => write!(f, "<uninitialized>"),
-            ScalarMaybeUninit::Scalar(s) => write!(f, "{:?}", s),
-        }
-    }
-}
-
-impl<Prov: Provenance> fmt::LowerHex for ScalarMaybeUninit<Prov> {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            ScalarMaybeUninit::Uninit => write!(f, "uninitialized bytes"),
-            ScalarMaybeUninit::Scalar(s) => write!(f, "{:x}", s),
-        }
-    }
-}
-
-impl<Prov> ScalarMaybeUninit<Prov> {
-    #[inline]
-    pub fn from_pointer(ptr: Pointer<Prov>, cx: &impl HasDataLayout) -> Self {
-        ScalarMaybeUninit::Scalar(Scalar::from_pointer(ptr, cx))
-    }
-
-    #[inline]
-    pub fn from_maybe_pointer(ptr: Pointer<Option<Prov>>, cx: &impl HasDataLayout) -> Self {
-        ScalarMaybeUninit::Scalar(Scalar::from_maybe_pointer(ptr, cx))
-    }
-
-    #[inline]
-    pub fn check_init<'tcx>(self) -> InterpResult<'tcx, Scalar<Prov>> {
-        match self {
-            ScalarMaybeUninit::Scalar(scalar) => Ok(scalar),
-            ScalarMaybeUninit::Uninit => throw_ub!(InvalidUninitBytes(None)),
-        }
-    }
-}
-
-impl<'tcx, Prov: Provenance> ScalarMaybeUninit<Prov> {
-    #[inline(always)]
-    pub fn to_pointer(self, cx: &impl HasDataLayout) -> InterpResult<'tcx, Pointer<Option<Prov>>> {
-        self.check_init()?.to_pointer(cx)
-    }
-
-    #[inline(always)]
-    pub fn to_bool(self) -> InterpResult<'tcx, bool> {
-        self.check_init()?.to_bool()
-    }
-
-    #[inline(always)]
-    pub fn to_char(self) -> InterpResult<'tcx, char> {
-        self.check_init()?.to_char()
-    }
-
-    #[inline(always)]
-    pub fn to_f32(self) -> InterpResult<'tcx, Single> {
-        self.check_init()?.to_f32()
-    }
-
-    #[inline(always)]
-    pub fn to_f64(self) -> InterpResult<'tcx, Double> {
-        self.check_init()?.to_f64()
-    }
-
-    #[inline(always)]
-    pub fn to_u8(self) -> InterpResult<'tcx, u8> {
-        self.check_init()?.to_u8()
-    }
-
-    #[inline(always)]
-    pub fn to_u16(self) -> InterpResult<'tcx, u16> {
-        self.check_init()?.to_u16()
-    }
-
-    #[inline(always)]
-    pub fn to_u32(self) -> InterpResult<'tcx, u32> {
-        self.check_init()?.to_u32()
-    }
-
-    #[inline(always)]
-    pub fn to_u64(self) -> InterpResult<'tcx, u64> {
-        self.check_init()?.to_u64()
-    }
-
-    #[inline(always)]
-    pub fn to_machine_usize(self, cx: &impl HasDataLayout) -> InterpResult<'tcx, u64> {
-        self.check_init()?.to_machine_usize(cx)
-    }
-
-    #[inline(always)]
-    pub fn to_i8(self) -> InterpResult<'tcx, i8> {
-        self.check_init()?.to_i8()
-    }
-
-    #[inline(always)]
-    pub fn to_i16(self) -> InterpResult<'tcx, i16> {
-        self.check_init()?.to_i16()
-    }
-
-    #[inline(always)]
-    pub fn to_i32(self) -> InterpResult<'tcx, i32> {
-        self.check_init()?.to_i32()
-    }
-
-    #[inline(always)]
-    pub fn to_i64(self) -> InterpResult<'tcx, i64> {
-        self.check_init()?.to_i64()
-    }
-
-    #[inline(always)]
-    pub fn to_machine_isize(self, cx: &impl HasDataLayout) -> InterpResult<'tcx, i64> {
-        self.check_init()?.to_machine_isize(cx)
-    }
-}
-
 /// Gets the bytes of a constant slice value.
 pub fn get_slice_bytes<'tcx>(cx: &impl HasDataLayout, val: ConstValue<'tcx>) -> &'tcx [u8] {
     if let ConstValue::Slice { data, start, end } = val {