diff -r 610b27224729 -r 8401c6dc109a src/share/vm/c1/c1_LIR.cpp
--- a/src/share/vm/c1/c1_LIR.cpp	Tue Sep 18 10:18:15 2018 +0800
+++ b/src/share/vm/c1/c1_LIR.cpp	Tue Sep 18 11:27:54 2018 +0800
@@ -305,6 +305,18 @@
       if (dst_lo == src_lo) return true;
 #endif
     }
+  } else if (is_double_fpu()) {
+    if (opr->is_double_fpu()) {
+      return as_double_reg() == opr->as_double_reg();
+    } else if (opr->is_single_fpu()) {
+      return as_double_reg() == opr->as_float_reg();
+    }
+  } else if (is_single_fpu()) {
+    if (opr->is_single_fpu()) {
+      return as_float_reg() == opr->as_float_reg();
+    } else if (opr->is_double_fpu()) {
+      return as_float_reg() == opr->as_double_reg();
+    }
   }
   return false;
 }