diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 5d3f21b91c4..f66ed7da012 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -12617,6 +12617,40 @@ (define_expand "copysigndf3"
   }"
 )
 
+;; movmisalign for DImode
+(define_expand "movmisaligndi"
+  [(match_operand:DI 0 "general_operand")
+   (match_operand:DI 1 "general_operand")]
+  "unaligned_access"
+{
+  /* Avoid breaking up an aligned load or store, this avoids problems if
+     that operand might be volatile.  */
+  if (MEM_P (operands[0])
+      && MEM_ALIGN (operands[0]) >= GET_MODE_ALIGNMENT (DImode))
+    {
+      rtx tmp = gen_reg_rtx (DImode);
+      emit_insn (gen_movmisaligndi (tmp, operands[1]));
+      emit_insn (gen_movdi (operands[0], tmp));
+      DONE;
+    }
+  else if (MEM_P (operands[1])
+      && MEM_ALIGN (operands[1]) >= GET_MODE_ALIGNMENT (DImode))
+    {
+      rtx tmp = gen_reg_rtx (DImode);
+      emit_insn (gen_movdi (tmp, operands[1]));
+      operands[1] = tmp;
+    }
+
+  rtx lo_op0 = gen_lowpart (SImode, operands[0]);
+  rtx lo_op1 = gen_lowpart (SImode, operands[1]);
+  rtx hi_op0 = gen_highpart_mode (SImode, DImode, operands[0]);
+  rtx hi_op1 = gen_highpart_mode (SImode, DImode, operands[1]);
+
+  emit_insn (gen_movmisalignsi (lo_op0, lo_op1));
+  emit_insn (gen_movmisalignsi (hi_op0, hi_op1));
+  DONE;
+})
+
 ;; movmisalign patterns for HImode and SImode.
 (define_expand "movmisalign<mode>"
   [(match_operand:HSI 0 "general_operand")
diff --git a/gcc/config/arm/vec-common.md b/gcc/config/arm/vec-common.md
index 68de4f0f943..e71d9b3811f 100644
--- a/gcc/config/arm/vec-common.md
+++ b/gcc/config/arm/vec-common.md
@@ -281,8 +281,8 @@ (define_expand "cml<fcmac1><conj_op><mode>4"
 })
 
 (define_expand "movmisalign<mode>"
- [(set (match_operand:VDQX 0 "neon_perm_struct_or_reg_operand")
-	(unspec:VDQX [(match_operand:VDQX 1 "neon_perm_struct_or_reg_operand")]
+ [(set (match_operand:VDQ 0 "neon_perm_struct_or_reg_operand")
+	(unspec:VDQ [(match_operand:VDQ 1 "neon_perm_struct_or_reg_operand")]
 	 UNSPEC_MISALIGNED_ACCESS))]
  "ARM_HAVE_<MODE>_LDST && !BYTES_BIG_ENDIAN
   && unaligned_access && !TARGET_REALLY_IWMMXT"