bjoernager/rust
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This commit is contained in:
klensy 2023-11-13 23:43:23 +03:00
parent aff6c741d4
commit b06d5b205c
3 changed files with 1 additions and 50 deletions
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33
compiler/rustc_const_eval/src/transform/promote_consts.rs
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@ -1023,36 +1023,3 @@ pub fn promote_candidates<'tcx>(
promotions
}
/// This function returns `true` if the function being called in the array
/// repeat expression is a `const` function.
pub fn is_const_fn_in_array_repeat_expression<'tcx>(
ccx: &ConstCx<'_, 'tcx>,
place: &Place<'tcx>,
body: &Body<'tcx>,
) -> bool {
match place.as_local() {
// rule out cases such as: `let my_var = some_fn(); [my_var; N]`
Some(local) if body.local_decls[local].is_user_variable() => return false,
None => return false,
_ => {}
}
for block in body.basic_blocks.iter() {
if let Some(Terminator { kind: TerminatorKind::Call { func, destination, .. }, .. }) =
&block.terminator
{
if let Operand::Constant(box ConstOperand { const_, .. }) = func {
if let ty::FnDef(def_id, _) = *const_.ty().kind() {
if destination == place {
if ccx.tcx.is_const_fn(def_id) {
return true;
}
}
}
}
}
}
false
}