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Remove some now-dead code that was only relevant before deaggregation. #96050

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Merged
merged 1 commit into from
Apr 16, 2022
Merged

Remove some now-dead code that was only relevant before deaggregation. #96050

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22 changes: 3 additions & 19 deletions compiler/rustc_const_eval/src/interpret/step.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -196,27 +196,11 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
self.write_immediate(*val, &dest)?;
}

Aggregate(ref kind, ref operands) => {
// active_field_index is for union initialization.
let (dest, active_field_index) = match **kind {
mir::AggregateKind::Adt(adt_did, variant_index, _, _, active_field_index) => {
self.write_discriminant(variant_index, &dest)?;
if self.tcx.adt_def(adt_did).is_enum() {
assert!(active_field_index.is_none());
(self.place_downcast(&dest, variant_index)?, None)
} else {
if active_field_index.is_some() {
assert_eq!(operands.len(), 1);
}
(dest, active_field_index)
}
}
_ => (dest, None),
};
Aggregate(box ref kind, ref operands) => {
assert!(matches!(kind, mir::AggregateKind::Array(..)));

for (i, operand) in operands.iter().enumerate() {
for (field_index, operand) in operands.iter().enumerate() {
let op = self.eval_operand(operand, None)?;
let field_index = active_field_index.unwrap_or(i);
let field_dest = self.place_field(&dest, field_index)?;
self.copy_op(&op, &field_dest)?;
}
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