diff --git a/lib/compiler-singlepass/src/emitter_x64.rs b/lib/compiler-singlepass/src/emitter_x64.rs
index 38a91689f1c..8a04a45c42d 100644
--- a/lib/compiler-singlepass/src/emitter_x64.rs
+++ b/lib/compiler-singlepass/src/emitter_x64.rs
@@ -909,11 +909,14 @@ macro_rules! sse_round_fn {
         |emitter: &mut AssemblerX64, precision: Precision, src1: XMM, src2: XMMOrMemory, dst: XMM| {
             match src2 {
                 XMMOrMemory::XMM(x) => {
-                    assert_eq!(src1, x);
-                    move_src_to_dst(emitter, precision, src1, dst);
-                    dynasm!(emitter ; $ins Rx((dst as u8)), Rx((dst as u8)), $mode)
+                    if x != dst {
+                        move_src_to_dst(emitter, precision, src1, dst);
+                    }
+                    dynasm!(emitter ; $ins Rx((x as u8)), Rx((dst as u8)), $mode)
                 }
-                XMMOrMemory::Memory(..) => unreachable!(),
+                XMMOrMemory::Memory(base, disp) => {
+                    dynasm!(emitter ; $ins Rx((dst as u8)), [Rq((base as u8)) + disp], $mode)
+                },
             }
         }
     }