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Rollup merge of #79027 - tmiasko:inline-always-live-locals, r=oli-obk

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Limit storage duration of inlined always live locals

Closes #76375.
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Mara Bos 2020-11-17 10:06:21 +01:00 • committed by GitHub
commit 336dc18aa3
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7 changed files with 73 additions and 5 deletions
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4
compiler/rustc_middle/src/mir/mod.rs
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@ -420,7 +420,9 @@ impl<'tcx> Body<'tcx> {
/// Returns an iterator over all user-defined variables and compiler-generated temporaries (all
/// locals that are neither arguments nor the return place).
#[inline]
pub fn vars_and_temps_iter(&self) -> impl Iterator<Item = Local> + ExactSizeIterator {
pub fn vars_and_temps_iter(
&self,
) -> impl DoubleEndedIterator<Item = Local> + ExactSizeIterator {
let arg_count = self.arg_count;
let local_count = self.local_decls.len();
(arg_count + 1..local_count).map(Local::new)