diff options
Diffstat (limited to 'compiler/rustc_mir_transform/src')
| -rw-r--r-- | compiler/rustc_mir_transform/src/gvn.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/compiler/rustc_mir_transform/src/gvn.rs b/compiler/rustc_mir_transform/src/gvn.rs index 77a3854ebde..2f8a3050199 100644 --- a/compiler/rustc_mir_transform/src/gvn.rs +++ b/compiler/rustc_mir_transform/src/gvn.rs @@ -1558,8 +1558,11 @@ impl<'body, 'tcx> VnState<'body, 'tcx> { return true; }; + if layout.uninhabited { + return true; + } + match layout.backend_repr { - BackendRepr::Uninhabited => true, BackendRepr::Scalar(a) => !a.is_always_valid(&self.ecx), BackendRepr::ScalarPair(a, b) => { !a.is_always_valid(&self.ecx) || !b.is_always_valid(&self.ecx) |