diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc
index daa60ac..df5c80d 100644
--- a/gcc/config/i386/i386.cc
+++ b/gcc/config/i386/i386.cc
@@ -20141,6 +20141,18 @@ ix86_modes_tieable_p (machine_mode mode1, machine_mode mode2)
     return (GET_MODE_SIZE (mode1) == 8
 	    && ix86_hard_regno_mode_ok (FIRST_MMX_REG, mode1));
 
+  /* SCmode and DImode can be tied.  */
+  if ((mode1 == E_SCmode && mode2 == E_DImode)
+      || (mode1 == E_DImode && mode2 == E_SCmode))
+    return TARGET_64BIT;
+
+  /* [SD]Cmode and V2[SD]Fmode modes can be tied.  */
+  if ((mode1 == E_SCmode && mode2 == E_V2SFmode)
+      || (mode1 == E_V2SFmode && mode2 == E_SCmode)
+      || (mode1 == E_DCmode && mode2 == E_V2DFmode)
+      || (mode1 == E_V2DFmode && mode2 == E_DCmode))
+    return true;
+
   return false;
 }