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make const-prop use cached RPO

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This commit is contained in:
Rémy Rakic 2023-06-14 19:57:23 +00:00
parent 066d38190b
commit 4215859617
1 changed files with 2 additions and 2 deletions
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4
compiler/rustc_mir_transform/src/const_prop.rs
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@ -118,8 +118,8 @@ impl<'tcx> MirPass<'tcx> for ConstProp {
// Traverse the body in reverse post-order, to ensure that `FullConstProp` locals are
// assigned before being read.
let postorder = body.basic_blocks.postorder().to_vec();
for bb in postorder.into_iter().rev() {
let rpo = body.basic_blocks.reverse_postorder().to_vec();
for bb in rpo {
let data = &mut body.basic_blocks.as_mut_preserves_cfg()[bb];
optimization_finder.visit_basic_block_data(bb, data);
}