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Split critical edge targeting the start block

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Tomasz Miąsko
2021-08-17 00:00:00 +00:00
parent d83da1d05d
commit 9a0ee05c3d
2 changed files with 13 additions and 1 deletions
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4
compiler/rustc_mir/src/transform/add_call_guards.rs
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@@ -38,7 +38,9 @@ impl<'tcx> MirPass<'tcx> for AddCallGuards {
impl AddCallGuards {
pub fn add_call_guards(&self, body: &mut Body<'_>) {
let pred_count: IndexVec<_, _> = body.predecessors().iter().map(|ps| ps.len()).collect();
let mut pred_count: IndexVec<_, _> =
body.predecessors().iter().map(|ps| ps.len()).collect();
pred_count[START_BLOCK] += 1;
// We need a place to store the new blocks generated
let mut new_blocks = Vec::new();