bjoernager/rust
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Keep an unoptimized duplicate of const fn around

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This allows CTFE to reliably detect UB, as otherwise
optimizations may hide UB.
This commit is contained in:
oli 2020-10-26 19:00:40 +00:00 • committed by oli
parent 8e4fe6647f
commit cccd40f9b5
25 changed files with 312 additions and 112 deletions
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17
compiler/rustc_middle/src/query/mod.rs
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@ -312,6 +312,20 @@ rustc_queries! {
desc { |tcx| "elaborating drops for `{}`", tcx.def_path_str(key.did.to_def_id()) }
}
query mir_for_ctfe(
key: DefId
) -> &'tcx mir::Body<'tcx> {
desc { |tcx| "caching mir for `{}` for CTFE", tcx.def_path_str(key) }
cache_on_disk_if { key.is_local() }
}
query mir_for_ctfe_of_const_arg(key: (LocalDefId, DefId)) -> &'tcx mir::Body<'tcx> {
desc {
|tcx| "MIR for CTFE of the const argument `{}`",
tcx.def_path_str(key.0.to_def_id())
}
}
query mir_promoted(key: ty::WithOptConstParam<LocalDefId>) ->
(
&'tcx Steal<mir::Body<'tcx>>,
@ -331,6 +345,9 @@ rustc_queries! {
desc { |tcx| "optimizing MIR for `{}`", tcx.def_path_str(key) }
cache_on_disk_if { key.is_local() }
}
// FIXME: now that we have `mir_for_ctfe_of_const_arg` can we get
// rid of this query?
query optimized_mir_of_const_arg(key: (LocalDefId, DefId)) -> &'tcx mir::Body<'tcx> {
desc {
|tcx| "optimizing MIR for the const argument `{}`",