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Various const eval cleanups #116835

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merged 5 commits into from
Oct 23, 2023
Merged

Various const eval cleanups #116835

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0fce74e
The mutability was ignored anyway, so just check for staticness
oli-obk Oct 9, 2023
5784e9e
Pull mplace validation logic out into an interpreter method
oli-obk Oct 10, 2023
f85b139
Pull out const error reporting into its own function
oli-obk Oct 10, 2023
fec0b54
Split `eval_to_allocation_raw_provider`
oli-obk Oct 10, 2023
066ec12
Ensure that `eval_to_allocation_raw` isn't called on static items fro…
oli-obk Oct 17, 2023
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The mutability was ignored anyway, so just check for staticness
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@oli-obk
oli-obk committed Oct 23, 2023
commit 0fce74e1c05cf6a70d68880f5efeda9a461a83ae
11 changes: 7 additions & 4 deletions compiler/rustc_const_eval/src/const_eval/eval_queries.rs
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This is just outlining, right? These new functions only have a single call site?

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yes

Original file line number Diff line number Diff line change
Expand Up @@ -335,13 +335,16 @@ pub fn eval_to_allocation_raw_provider<'tcx>(
let mut ref_tracking = RefTracking::new(mplace.clone());
let mut inner = false;
while let Some((mplace, path)) = ref_tracking.todo.pop() {
let mode = match tcx.static_mutability(cid.instance.def_id()) {
Some(_) if cid.promoted.is_some() => {
let mode = if is_static {
if cid.promoted.is_some() {
// Promoteds in statics are allowed to point to statics.
CtfeValidationMode::Const { inner, allow_static_ptrs: true }
} else {
// a `static`
CtfeValidationMode::Regular
}
Some(_) => CtfeValidationMode::Regular, // a `static`
None => CtfeValidationMode::Const { inner, allow_static_ptrs: false },
} else {
CtfeValidationMode::Const { inner, allow_static_ptrs: false }
};
ecx.const_validate_operand(&mplace.into(), path, &mut ref_tracking, mode)?;
inner = true;
Expand Down