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Support tail calls in mir via TerminatorKind::TailCall

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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
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1
compiler/rustc_mir_dataflow/src/impls/borrowed_locals.rs
View file

@ -145,6 +145,7 @@ where
| TerminatorKind::InlineAsm { .. }
| TerminatorKind::UnwindResume
| TerminatorKind::Return
| TerminatorKind::TailCall { .. }
| TerminatorKind::SwitchInt { .. }
| TerminatorKind::Unreachable
| TerminatorKind::Yield { .. } => {}

2
compiler/rustc_mir_dataflow/src/impls/storage_liveness.rs
View file

@ -288,6 +288,7 @@ impl<'tcx> crate::GenKillAnalysis<'tcx> for MaybeRequiresStorage<'_, 'tcx> {
| TerminatorKind::Goto { .. }
| TerminatorKind::UnwindResume
| TerminatorKind::Return
| TerminatorKind::TailCall { .. }
| TerminatorKind::SwitchInt { .. }
| TerminatorKind::Unreachable => {}
}
@ -325,6 +326,7 @@ impl<'tcx> crate::GenKillAnalysis<'tcx> for MaybeRequiresStorage<'_, 'tcx> {
| TerminatorKind::Goto { .. }
| TerminatorKind::UnwindResume
| TerminatorKind::Return
| TerminatorKind::TailCall { .. }
| TerminatorKind::SwitchInt { .. }
| TerminatorKind::Unreachable => {}
}

6
compiler/rustc_mir_dataflow/src/move_paths/builder.rs
View file

@ -489,6 +489,12 @@ impl<'b, 'a, 'tcx, F: Fn(Ty<'tcx>) -> bool> Gatherer<'b, 'a, 'tcx, F> {
self.gather_init(destination.as_ref(), InitKind::NonPanicPathOnly);
}
}
TerminatorKind::TailCall { ref func, ref args, .. } => {
self.gather_operand(func);
for arg in args {
self.gather_operand(&arg.node);
}
}
TerminatorKind::InlineAsm {
template: _,
ref operands,

3
compiler/rustc_mir_dataflow/src/value_analysis.rs
View file

@ -269,6 +269,9 @@ pub trait ValueAnalysis<'tcx> {
TerminatorKind::SwitchInt { discr, targets } => {
return self.handle_switch_int(discr, targets, state);
}
TerminatorKind::TailCall { .. } => {
// FIXME(explicit_tail_calls): determine if we need to do something here (probably not)
}
TerminatorKind::Goto { .. }
| TerminatorKind::UnwindResume
| TerminatorKind::UnwindTerminate(_)