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Disable ConstGoto opt in cleanup blocks #107323

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Merged
merged 1 commit into from
Jan 26, 2023
Merged

Disable ConstGoto opt in cleanup blocks #107323

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9 changes: 9 additions & 0 deletions compiler/rustc_mir_transform/src/const_goto.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,15 @@ impl<'tcx> MirPass<'tcx> for ConstGoto {
}

impl<'tcx> Visitor<'tcx> for ConstGotoOptimizationFinder<'_, 'tcx> {
fn visit_basic_block_data(&mut self, block: BasicBlock, data: &BasicBlockData<'tcx>) {
if data.is_cleanup {
// Because of the restrictions around control flow in cleanup blocks, we don't perform
// this optimization at all in such blocks.
return;
}
self.super_basic_block_data(block, data);
}

fn visit_terminator(&mut self, terminator: &Terminator<'tcx>, location: Location) {
let _: Option<_> = try {
let target = terminator.kind.as_goto()?;
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