Auto merge of #107843 - bjorn3:sync_cg_clif-2023-02-09, r=bjorn3

[rust.git] / compiler / rustc_codegen_cranelift / src / value_and_place.rs

diff --git a/compiler/rustc_codegen_cranelift/src/value_and_place.rs b/compiler/rustc_codegen_cranelift/src/value_and_place.rs
index fa06d6c3ba7f3a2a27b9f14b73d8862cfac75d87..320eecaee008e4da9fa98f8e9d0aab428b1f95b8 100644 (file)
--- a/compiler/rustc_codegen_cranelift/src/value_and_place.rs
+++ b/compiler/rustc_codegen_cranelift/src/value_and_place.rs
@@ -588,10 +588,13 @@ fn transmute_value<'tcx>(
                 return;
             }
             CPlaceInner::VarPair(_local, var1, var2) => {
-                let (ptr, meta) = from.force_stack(fx);
-                assert!(meta.is_none());
-                let (data1, data2) =
-                    CValue(CValueInner::ByRef(ptr, None), dst_layout).load_scalar_pair(fx);
+                let (data1, data2) = if from.layout().ty == dst_layout.ty {
+                    CValue(from.0, dst_layout).load_scalar_pair(fx)
+                } else {
+                    let (ptr, meta) = from.force_stack(fx);
+                    assert!(meta.is_none());
+                    CValue(CValueInner::ByRef(ptr, None), dst_layout).load_scalar_pair(fx)
+                };
                 let (dst_ty1, dst_ty2) = fx.clif_pair_type(self.layout().ty).unwrap();
                 transmute_value(fx, var1, data1, dst_ty1);
                 transmute_value(fx, var2, data2, dst_ty2);