bjoernager/rust
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intern_with_temp_alloc is for DummyMachine only.

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This commit is contained in:
Nicholas Nethercote 2024-10-22 13:41:09 +11:00
parent 675360ae4e
commit 99a60eb97f
1 changed files with 6 additions and 2 deletions
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8
compiler/rustc_const_eval/src/interpret/intern.rs
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@ -30,6 +30,7 @@ use super::{
AllocId, Allocation, InterpCx, MPlaceTy, Machine, MemoryKind, PlaceTy, err_ub, interp_ok,
};
use crate::const_eval;
use crate::const_eval::DummyMachine;
use crate::errors::NestedStaticInThreadLocal;
pub trait CompileTimeMachine<'tcx, T> = Machine<
@ -323,14 +324,17 @@ pub fn intern_const_alloc_for_constprop<'tcx, T, M: CompileTimeMachine<'tcx, T>>
interp_ok(())
}
impl<'tcx, M: super::intern::CompileTimeMachine<'tcx, !>> InterpCx<'tcx, M> {
impl<'tcx> InterpCx<'tcx, DummyMachine> {
/// A helper function that allocates memory for the layout given and gives you access to mutate
/// it. Once your own mutation code is done, the backing `Allocation` is removed from the
/// current `Memory` and interned as read-only into the global memory.
pub fn intern_with_temp_alloc(
&mut self,
layout: TyAndLayout<'tcx>,
f: impl FnOnce(&mut InterpCx<'tcx, M>, &PlaceTy<'tcx, M::Provenance>) -> InterpResult<'tcx, ()>,
f: impl FnOnce(
&mut InterpCx<'tcx, DummyMachine>,
&PlaceTy<'tcx, CtfeProvenance>,
) -> InterpResult<'tcx, ()>,
) -> InterpResult<'tcx, AllocId> {
// `allocate` picks a fresh AllocId that we will associate with its data below.
let dest = self.allocate(layout, MemoryKind::Stack)?;