diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /compiler/rustc_mir_transform/src/remove_false_edges.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'compiler/rustc_mir_transform/src/remove_false_edges.rs')
-rw-r--r-- | compiler/rustc_mir_transform/src/remove_false_edges.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/compiler/rustc_mir_transform/src/remove_false_edges.rs b/compiler/rustc_mir_transform/src/remove_false_edges.rs new file mode 100644 index 000000000..71f5ccf7e --- /dev/null +++ b/compiler/rustc_mir_transform/src/remove_false_edges.rs @@ -0,0 +1,29 @@ +use rustc_middle::mir::{Body, TerminatorKind}; +use rustc_middle::ty::TyCtxt; + +use crate::MirPass; + +/// Removes `FalseEdge` and `FalseUnwind` terminators from the MIR. +/// +/// These are only needed for borrow checking, and can be removed afterwards. +/// +/// FIXME: This should probably have its own MIR phase. +pub struct RemoveFalseEdges; + +impl<'tcx> MirPass<'tcx> for RemoveFalseEdges { + fn run_pass(&self, _: TyCtxt<'tcx>, body: &mut Body<'tcx>) { + for block in body.basic_blocks_mut() { + let terminator = block.terminator_mut(); + terminator.kind = match terminator.kind { + TerminatorKind::FalseEdge { real_target, .. } => { + TerminatorKind::Goto { target: real_target } + } + TerminatorKind::FalseUnwind { real_target, .. } => { + TerminatorKind::Goto { target: real_target } + } + + _ => continue, + } + } + } +} |