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better explain GLOBAL_KIND choice

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This commit is contained in:
Ralf Jung 2020-03-25 08:46:58 +01:00
parent 02046a5d40
commit 4920a3371f
2 changed files with 2 additions and 2 deletions
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2
src/librustc_mir/const_eval/machine.rs
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@ -178,7 +178,7 @@ impl<'mir, 'tcx> interpret::Machine<'mir, 'tcx> for CompileTimeInterpreter {
type MemoryMap = FxHashMap<AllocId, (MemoryKind<!>, Allocation)>;
const GLOBAL_KIND: Option<!> = None; // no copying of globals allowed
const GLOBAL_KIND: Option<!> = None; // no copying of globals from `tcx` to machine memory
// We do not check for alignment to avoid having to carry an `Align`
// in `ConstValue::ByRef`.

2
src/librustc_mir/transform/const_prop.rs
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@ -172,7 +172,7 @@ impl<'mir, 'tcx> interpret::Machine<'mir, 'tcx> for ConstPropMachine {
type MemoryMap = FxHashMap<AllocId, (MemoryKind<!>, Allocation)>;
const GLOBAL_KIND: Option<!> = None;
const GLOBAL_KIND: Option<!> = None; // no copying of globals from `tcx` to machine memory
const CHECK_ALIGN: bool = false;