rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Support tail calls in mir via TerminatorKind::TailCall

Browse Source
This commit is contained in:
Maybe Waffle
2024-02-15 19:54:37 +00:00
committed by Maybe Lapkin
parent e2cf31a614
commit 484152d562
41 changed files with 328 additions and 88 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
compiler/rustc_borrowck/src/lib.rs
View File

@@ -728,6 +728,12 @@ impl<'a, 'mir, 'tcx, R> rustc_mir_dataflow::ResultsVisitor<'mir, 'tcx, R>
}
self.mutate_place(loc, (*destination, span), Deep, flow_state);
}
TerminatorKind::TailCall { func, args, fn_span: _ } => {
self.consume_operand(loc, (func, span), flow_state);
for arg in args {
self.consume_operand(loc, (&arg.node, arg.span), flow_state);
}
}
TerminatorKind::Assert { cond, expected: _, msg, target: _, unwind: _ } => {
self.consume_operand(loc, (cond, span), flow_state);
if let AssertKind::BoundsCheck { len, index } = &**msg {
@@ -814,9 +820,8 @@ impl<'a, 'mir, 'tcx, R> rustc_mir_dataflow::ResultsVisitor<'mir, 'tcx, R>
TerminatorKind::UnwindResume
| TerminatorKind::Return
| TerminatorKind::TailCall { .. }
| TerminatorKind::CoroutineDrop => {
// Returning from the function implicitly kills storage for all locals and statics.
// Often, the storage will already have been killed by an explicit
// StorageDead, but we don't always emit those (notably on unwind paths),
// so this "extra check" serves as a kind of backup.
let borrow_set = self.borrow_set.clone();