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-rw-r--r--compiler/rustc_codegen_cranelift/src/constant.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_cranelift/src/constant.rs b/compiler/rustc_codegen_cranelift/src/constant.rs
index aacf37bb5b7..bf5d29c16f6 100644
--- a/compiler/rustc_codegen_cranelift/src/constant.rs
+++ b/compiler/rustc_codegen_cranelift/src/constant.rs
@@ -159,6 +159,8 @@ pub(crate) fn codegen_const_value<'tcx>(
                         _ => unreachable!(),
                     };
 
+                    // FIXME avoid this extra copy to the stack and directly write to the final
+                    // destination
                     let place = CPlace::new_stack_slot(fx, layout);
                     place.to_ptr().store(fx, val, MemFlags::trusted());
                     place.to_cvalue(fx)