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Tweak the function boundary

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This commit is contained in:
Nadrieril 2024-02-16 03:04:00 +01:00
parent c00b38e9fb
commit b2edcc7130
1 changed files with 10 additions and 18 deletions
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28
compiler/rustc_mir_build/src/build/matches/mod.rs
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@ -1219,18 +1219,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
debug!("match_candidates: {:?} candidates fully matched", fully_matched);
let (matched_candidates, unmatched_candidates) = candidates.split_at_mut(fully_matched);
let block = if !matched_candidates.is_empty() {
let otherwise_block =
self.select_matched_candidates(matched_candidates, start_block, fake_borrows);
if let Some(last_otherwise_block) = otherwise_block {
last_otherwise_block
} else {
self.cfg.start_new_block()
}
} else {
start_block
};
let block = self.select_matched_candidates(matched_candidates, start_block, fake_borrows);
// If there are no candidates that still need testing, we're
// done. Since all matches are exhaustive, execution should
@ -1282,11 +1271,10 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
matched_candidates: &mut [&mut Candidate<'_, 'tcx>],
start_block: BasicBlock,
fake_borrows: &mut Option<FxIndexSet<Place<'tcx>>>,
) -> Option<BasicBlock> {
debug_assert!(
!matched_candidates.is_empty(),
"select_matched_candidates called with no candidates",
);
) -> BasicBlock {
if matched_candidates.is_empty() {
return start_block;
}
debug_assert!(
matched_candidates.iter().all(|c| c.subcandidates.is_empty()),
"subcandidates should be empty in select_matched_candidates",
@ -1356,7 +1344,11 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
candidate.pre_binding_block = Some(self.cfg.start_new_block());
}
reachable_candidates.last_mut().unwrap().otherwise_block
reachable_candidates
.last_mut()
.unwrap()
.otherwise_block
.unwrap_or_else(|| self.cfg.start_new_block())
}
/// Tests a candidate where there are only or-patterns left to test, or