bjoernager/rust
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Add an intrinsic for ptr::metadata

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This commit is contained in:
Scott McMurray 2024-04-21 16:11:01 -07:00
parent 7717a306b2
commit 459ce3f6bb
31 changed files with 422 additions and 52 deletions
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8
compiler/rustc_codegen_cranelift/src/value_and_place.rs
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@ -95,6 +95,14 @@ impl<'tcx> CValue<'tcx> {
CValue(CValueInner::ByValPair(value, extra), layout)
}
/// Create an instance of a ZST
///
/// The is represented by a dangling pointer of suitable alignment.
pub(crate) fn zst(layout: TyAndLayout<'tcx>) -> CValue<'tcx> {
assert!(layout.is_zst());
CValue::by_ref(crate::Pointer::dangling(layout.align.pref), layout)
}
pub(crate) fn layout(&self) -> TyAndLayout<'tcx> {
self.1
}