bjoernager/rust
bjoernager/rust
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no more do while

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This commit is contained in:
lcnr 2023-03-09 12:53:03 +01:00
parent 9b60e6c68f
commit a5258d1721
2 changed files with 23 additions and 25 deletions
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40
compiler/rustc_mir_transform/src/coverage/graph.rs
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@ -538,29 +538,29 @@ impl TraverseCoverageGraphWithLoops {
"TraverseCoverageGraphWithLoops::next - context_stack: {:?}",
self.context_stack.iter().rev().collect::<Vec<_>>()
);
while let Some(next_bcb) = {
// Strip contexts with empty worklists from the top of the stack
while self.context_stack.last().map_or(false, |context| context.worklist.is_empty()) {
while let Some(context) = self.context_stack.last_mut() {
if let Some(next_bcb) = context.worklist.pop() {
if !self.visited.insert(next_bcb) {
debug!("Already visited: {:?}", next_bcb);
continue;
}
debug!("Visiting {:?}", next_bcb);
if self.backedges[next_bcb].len() > 0 {
debug!("{:?} is a loop header! Start a new TraversalContext...", next_bcb);
self.context_stack.push(TraversalContext {
loop_backedges: Some((self.backedges[next_bcb].clone(), next_bcb)),
worklist: Vec::new(),
});
}
self.extend_worklist(basic_coverage_blocks, next_bcb);
return Some(next_bcb);
} else {
// Strip contexts with empty worklists from the top of the stack
self.context_stack.pop();
}
// Pop the next bcb off of the current context_stack. If none, all BCBs were visited.
self.context_stack.last_mut().map_or(None, |context| context.worklist.pop())
} {
if !self.visited.insert(next_bcb) {
debug!("Already visited: {:?}", next_bcb);
continue;
}
debug!("Visiting {:?}", next_bcb);
if self.backedges[next_bcb].len() > 0 {
debug!("{:?} is a loop header! Start a new TraversalContext...", next_bcb);
self.context_stack.push(TraversalContext {
loop_backedges: Some((self.backedges[next_bcb].clone(), next_bcb)),
worklist: Vec::new(),
});
}
self.extend_worklist(basic_coverage_blocks, next_bcb);
return Some(next_bcb);
}
None
}