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deduplicate some copy_op code

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This commit is contained in:
Ralf Jung
2022-07-02 20:40:41 -04:00
parent 924a4cd008
commit e685530b07
6 changed files with 74 additions and 87 deletions
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6
compiler/rustc_const_eval/src/interpret/step.rs
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@@ -169,7 +169,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
Use(ref operand) => {
// Avoid recomputing the layout
let op = self.eval_operand(operand, Some(dest.layout))?;
self.copy_op(&op, &dest)?;
self.copy_op(&op, &dest, /*allow_transmute*/ false)?;
}
BinaryOp(bin_op, box (ref left, ref right)) => {
@@ -204,7 +204,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
for (field_index, operand) in operands.iter().enumerate() {
let op = self.eval_operand(operand, None)?;
let field_dest = self.place_field(&dest, field_index)?;
self.copy_op(&op, &field_dest)?;
self.copy_op(&op, &field_dest, /*allow_transmute*/ false)?;
}
}
@@ -220,7 +220,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
} else {
// Write the src to the first element.
let first = self.mplace_field(&dest, 0)?;
self.copy_op(&src, &first.into())?;
self.copy_op(&src, &first.into(), /*allow_transmute*/ false)?;
// This is performance-sensitive code for big static/const arrays! So we
// avoid writing each operand individually and instead just make many copies