Index: llvm/trunk/lib/Target/ARM/ARMInstrMVE.td
===================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrMVE.td
+++ llvm/trunk/lib/Target/ARM/ARMInstrMVE.td
@@ -985,9 +985,9 @@
   let Inst{0} = 0b0;
 }
 
-class MVE_VREV<string iname, string suffix, bits<2> size, bits<2> bit_8_7>
+class MVE_VREV<string iname, string suffix, bits<2> size, bits<2> bit_8_7, string cstr="">
   : MVE_bit_arith<(outs MQPR:$Qd), (ins MQPR:$Qm), iname,
-                  suffix, "$Qd, $Qm", ""> {
+                  suffix, "$Qd, $Qm", cstr> {
 
   let Inst{28} = 0b1;
   let Inst{25-23} = 0b111;
@@ -1001,9 +1001,9 @@
   let Inst{0} = 0b0;
 }
 
-def MVE_VREV64_8  : MVE_VREV<"vrev64", "8", 0b00, 0b00>;
-def MVE_VREV64_16 : MVE_VREV<"vrev64", "16", 0b01, 0b00>;
-def MVE_VREV64_32 : MVE_VREV<"vrev64", "32", 0b10, 0b00>;
+def MVE_VREV64_8  : MVE_VREV<"vrev64", "8", 0b00, 0b00, "@earlyclobber $Qd">;
+def MVE_VREV64_16 : MVE_VREV<"vrev64", "16", 0b01, 0b00, "@earlyclobber $Qd">;
+def MVE_VREV64_32 : MVE_VREV<"vrev64", "32", 0b10, 0b00, "@earlyclobber $Qd">;
 
 def MVE_VREV32_8  : MVE_VREV<"vrev32", "8", 0b00, 0b01>;
 def MVE_VREV32_16 : MVE_VREV<"vrev32", "16", 0b01, 0b01>;
Index: llvm/trunk/test/CodeGen/Thumb2/mve-shuffle.ll
===================================================================
--- llvm/trunk/test/CodeGen/Thumb2/mve-shuffle.ll
+++ llvm/trunk/test/CodeGen/Thumb2/mve-shuffle.ll
@@ -42,7 +42,8 @@
 define arm_aapcs_vfpcc <4 x i32> @shuffle5_i32(<4 x i32> %src) {
 ; CHECK-LABEL: shuffle5_i32:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev64.32 q0, q0
+; CHECK-NEXT:    vrev64.32 q1, q0
+; CHECK-NEXT:    vmov q0, q1
 ; CHECK-NEXT:    bx lr
 entry:
   %out = shufflevector <4 x i32> %src, <4 x i32> undef, <4 x i32> <i32 1, i32 0, i32 3, i32 2>
@@ -122,7 +123,8 @@
 define arm_aapcs_vfpcc <8 x i16> @shuffle5_i16(<8 x i16> %src) {
 ; CHECK-LABEL: shuffle5_i16:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev64.16 q0, q0
+; CHECK-NEXT:    vrev64.16 q1, q0
+; CHECK-NEXT:    vmov q0, q1
 ; CHECK-NEXT:    bx lr
 entry:
   %out = shufflevector <8 x i16> %src, <8 x i16> undef, <8 x i32> <i32 3, i32 2, i32 1, i32 0, i32 7, i32 6, i32 5, i32 4>
@@ -235,7 +237,8 @@
 define arm_aapcs_vfpcc <16 x i8> @shuffle5_i8(<16 x i8> %src) {
 ; CHECK-LABEL: shuffle5_i8:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev64.8 q0, q0
+; CHECK-NEXT:    vrev64.8 q1, q0
+; CHECK-NEXT:    vmov q0, q1
 ; CHECK-NEXT:    bx lr
 entry:
   %out = shufflevector <16 x i8> %src, <16 x i8> undef, <16 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0, i32 15, i32 14, i32 13, i32 12, i32 11, i32 10, i32 9, i32 8>
@@ -334,7 +337,8 @@
 define arm_aapcs_vfpcc <4 x float> @shuffle5_f32(<4 x float> %src) {
 ; CHECK-LABEL: shuffle5_f32:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev64.32 q0, q0
+; CHECK-NEXT:    vrev64.32 q1, q0
+; CHECK-NEXT:    vmov q0, q1
 ; CHECK-NEXT:    bx lr
 entry:
   %out = shufflevector <4 x float> %src, <4 x float> undef, <4 x i32> <i32 1, i32 0, i32 3, i32 2>
@@ -405,7 +409,8 @@
 define arm_aapcs_vfpcc <8 x half> @shuffle5_f16(<8 x half> %src) {
 ; CHECK-LABEL: shuffle5_f16:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev64.16 q0, q0
+; CHECK-NEXT:    vrev64.16 q1, q0
+; CHECK-NEXT:    vmov q0, q1
 ; CHECK-NEXT:    bx lr
 entry:
   %out = shufflevector <8 x half> %src, <8 x half> undef, <8 x i32> <i32 3, i32 2, i32 1, i32 0, i32 7, i32 6, i32 5, i32 4>