Encode the 32-bit wide Thumb (and Thumb2) instructions with the high order

halfword being emitted to the stream first. rdar://8728174

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120848 91177308-0d34-0410-b5e6-96231b3b80d8

15 files changed, 457 insertions, 449 deletions

diff --git a/lib/Target/ARM/ARMMCCodeEmitter.cpp b/lib/Target/ARM/ARMMCCodeEmitter.cpp
index d6926d9450..bdac5adf4c 100644
--- a/lib/Target/ARM/ARMMCCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMMCCodeEmitter.cpp
@@ -995,6 +995,7 @@ getAddrMode6OffsetOpValue(const MCInst &MI, unsigned Op,
 void ARMMCCodeEmitter::
 EncodeInstruction(const MCInst &MI, raw_ostream &OS,
                   SmallVectorImpl<MCFixup> &Fixups) const {
+  const ARMSubtarget &Subtarget = TM.getSubtarget<ARMSubtarget>();
   // Pseudo instructions don't get encoded.
   const TargetInstrDesc &Desc = TII.get(MI.getOpcode());
   uint64_t TSFlags = Desc.TSFlags;
@@ -1007,7 +1008,14 @@ EncodeInstruction(const MCInst &MI, raw_ostream &OS,
   case ARMII::Size2Bytes: Size = 2; break;
   case ARMII::Size4Bytes: Size = 4; break;
   }
-  EmitConstant(getBinaryCodeForInstr(MI, Fixups), Size, OS);
+  uint32_t Binary = getBinaryCodeForInstr(MI, Fixups);
+  // Thumb 32-bit wide instructions need to be have the high order halfword
+  // emitted first.
+  if (Subtarget.isThumb() && Size == 4) {
+    EmitConstant(Binary >> 16, 2, OS);
+    EmitConstant(Binary & 0xffff, 2, OS);
+  } else
+    EmitConstant(Binary, Size, OS);
   ++MCNumEmitted;  // Keep track of the # of mi's emitted.
 }
 
diff --git a/test/MC/ARM/neont2-abs-encoding.s b/test/MC/ARM/neont2-abs-encoding.s
index dd36133ecb..200495d9ac 100644
--- a/test/MC/ARM/neont2-abs-encoding.s
+++ b/test/MC/ARM/neont2-abs-encoding.s
@@ -2,32 +2,32 @@
 
 .code 16
 
-@ CHECK: vabs.s8	d16, d16                @ encoding: [0x20,0x03,0xf1,0xff]
+@ CHECK: vabs.s8	d16, d16                @ encoding: [0xf1,0xff,0x20,0x03]
 	vabs.s8	d16, d16
-@ CHECK: vabs.s16	d16, d16        @ encoding: [0x20,0x03,0xf5,0xff]
+@ CHECK: vabs.s16	d16, d16        @ encoding: [0xf5,0xff,0x20,0x03]
 	vabs.s16	d16, d16
-@ CHECK: vabs.s32	d16, d16        @ encoding: [0x20,0x03,0xf9,0xff]
+@ CHECK: vabs.s32	d16, d16        @ encoding: [0xf9,0xff,0x20,0x03]
 	vabs.s32	d16, d16
-@ CHECK: vabs.f32	d16, d16        @ encoding: [0x20,0x07,0xf9,0xff]
+@ CHECK: vabs.f32	d16, d16        @ encoding: [0xf9,0xff,0x20,0x07]
 	vabs.f32	d16, d16
-@ CHECK: vabs.s8	q8, q8                  @ encoding: [0x60,0x03,0xf1,0xff]
+@ CHECK: vabs.s8	q8, q8                  @ encoding: [0xf1,0xff,0x60,0x03]
 	vabs.s8	q8, q8
-@ CHECK: vabs.s16	q8, q8          @ encoding: [0x60,0x03,0xf5,0xff]
+@ CHECK: vabs.s16	q8, q8          @ encoding: [0xf5,0xff,0x60,0x03]
 	vabs.s16	q8, q8
-@ CHECK: vabs.s32	q8, q8          @ encoding: [0x60,0x03,0xf9,0xff]
+@ CHECK: vabs.s32	q8, q8          @ encoding: [0xf9,0xff,0x60,0x03]
 	vabs.s32	q8, q8
-@ CHECK: vabs.f32	q8, q8          @ encoding: [0x60,0x07,0xf9,0xff]
+@ CHECK: vabs.f32	q8, q8          @ encoding: [0xf9,0xff,0x60,0x07]
 	vabs.f32	q8, q8
 
-@ CHECK: vqabs.s8	d16, d16        @ encoding: [0x20,0x07,0xf0,0xff]
+@ CHECK: vqabs.s8	d16, d16        @ encoding: [0xf0,0xff,0x20,0x07]
 	vqabs.s8	d16, d16
-@ CHECK: vqabs.s16	d16, d16        @ encoding: [0x20,0x07,0xf4,0xff]
+@ CHECK: vqabs.s16	d16, d16        @ encoding: [0xf4,0xff,0x20,0x07]
 	vqabs.s16	d16, d16
-@ CHECK: vqabs.s32	d16, d16        @ encoding: [0x20,0x07,0xf8,0xff]
+@ CHECK: vqabs.s32	d16, d16        @ encoding: [0xf8,0xff,0x20,0x07]
 	vqabs.s32	d16, d16
-@ CHECK: vqabs.s8	q8, q8          @ encoding: [0x60,0x07,0xf0,0xff]
+@ CHECK: vqabs.s8	q8, q8          @ encoding: [0xf0,0xff,0x60,0x07]
 	vqabs.s8	q8, q8
-@ CHECK: vqabs.s16	q8, q8          @ encoding: [0x60,0x07,0xf4,0xff]
+@ CHECK: vqabs.s16	q8, q8          @ encoding: [0xf4,0xff,0x60,0x07]
 	vqabs.s16	q8, q8
-@ CHECK: vqabs.s32	q8, q8          @ encoding: [0x60,0x07,0xf8,0xff]
+@ CHECK: vqabs.s32	q8, q8          @ encoding: [0xf8,0xff,0x60,0x07]
 	vqabs.s32	q8, q8
diff --git a/test/MC/ARM/neont2-add-encoding.s b/test/MC/ARM/neont2-add-encoding.s
index f7c32a7197..c384d76dbe 100644
--- a/test/MC/ARM/neont2-add-encoding.s
+++ b/test/MC/ARM/neont2-add-encoding.s
@@ -2,137 +2,137 @@
 
 .code 16
 
-@ CHECK: vadd.i8	d16, d17, d16           @ encoding: [0xa0,0x08,0x41,0xef]
+@ CHECK: vadd.i8	d16, d17, d16           @ encoding: [0x41,0xef,0xa0,0x08]
 	vadd.i8	d16, d17, d16
-@ CHECK: vadd.i16	d16, d17, d16   @ encoding: [0xa0,0x08,0x51,0xef]
+@ CHECK: vadd.i16	d16, d17, d16   @ encoding: [0x51,0xef,0xa0,0x08]
 	vadd.i16	d16, d17, d16
-@ CHECK: vadd.i64	d16, d17, d16   @ encoding: [0xa0,0x08,0x71,0xef]
+@ CHECK: vadd.i64	d16, d17, d16   @ encoding: [0x71,0xef,0xa0,0x08]
 	vadd.i64	d16, d17, d16
-@ CHECK: vadd.i32	d16, d17, d16   @ encoding: [0xa0,0x08,0x61,0xef]
+@ CHECK: vadd.i32	d16, d17, d16   @ encoding: [0x61,0xef,0xa0,0x08]
 	vadd.i32	d16, d17, d16
-@ CHECK: vadd.f32	d16, d16, d17   @ encoding: [0xa1,0x0d,0x40,0xef]
+@ CHECK: vadd.f32	d16, d16, d17   @ encoding: [0x40,0xef,0xa1,0x0d]
 	vadd.f32	d16, d16, d17
-@ CHECK: vadd.f32	q8, q8, q9      @ encoding: [0xe2,0x0d,0x40,0xef]
+@ CHECK: vadd.f32	q8, q8, q9      @ encoding: [0x40,0xef,0xe2,0x0d]
 	vadd.f32	q8, q8, q9
 
-@ CHECK: vaddl.s8	q8, d17, d16    @ encoding: [0xa0,0x00,0xc1,0xef]
+@ CHECK: vaddl.s8	q8, d17, d16    @ encoding: [0xc1,0xef,0xa0,0x00]
 	vaddl.s8	q8, d17, d16
-@ CHECK: vaddl.s16	q8, d17, d16    @ encoding: [0xa0,0x00,0xd1,0xef]
+@ CHECK: vaddl.s16	q8, d17, d16    @ encoding: [0xd1,0xef,0xa0,0x00]
 	vaddl.s16	q8, d17, d16
-@ CHECK: vaddl.s32	q8, d17, d16    @ encoding: [0xa0,0x00,0xe1,0xef]
+@ CHECK: vaddl.s32	q8, d17, d16    @ encoding: [0xe1,0xef,0xa0,0x00]
 	vaddl.s32	q8, d17, d16
-@ CHECK: vaddl.u8	q8, d17, d16    @ encoding: [0xa0,0x00,0xc1,0xff]
+@ CHECK: vaddl.u8	q8, d17, d16    @ encoding: [0xc1,0xff,0xa0,0x00]
 	vaddl.u8	q8, d17, d16
-@ CHECK: vaddl.u16	q8, d17, d16    @ encoding: [0xa0,0x00,0xd1,0xff]
+@ CHECK: vaddl.u16	q8, d17, d16    @ encoding: [0xd1,0xff,0xa0,0x00]
 	vaddl.u16	q8, d17, d16
-@ CHECK: vaddl.u32	q8, d17, d16    @ encoding: [0xa0,0x00,0xe1,0xff]
+@ CHECK: vaddl.u32	q8, d17, d16    @ encoding: [0xe1,0xff,0xa0,0x00]
 	vaddl.u32	q8, d17, d16
 
-@ CHECK: vaddw.s8	q8, q8, d18     @ encoding: [0xa2,0x01,0xc0,0xef]
+@ CHECK: vaddw.s8	q8, q8, d18     @ encoding: [0xc0,0xef,0xa2,0x01]
 	vaddw.s8	q8, q8, d18
-@ CHECK: vaddw.s16	q8, q8, d18     @ encoding: [0xa2,0x01,0xd0,0xef]
+@ CHECK: vaddw.s16	q8, q8, d18     @ encoding: [0xd0,0xef,0xa2,0x01]
 	vaddw.s16	q8, q8, d18
-@ CHECK: vaddw.s32	q8, q8, d18     @ encoding: [0xa2,0x01,0xe0,0xef]
+@ CHECK: vaddw.s32	q8, q8, d18     @ encoding: [0xe0,0xef,0xa2,0x01]
 	vaddw.s32	q8, q8, d18
-@ CHECK: vaddw.u8	q8, q8, d18     @ encoding: [0xa2,0x01,0xc0,0xff]
+@ CHECK: vaddw.u8	q8, q8, d18     @ encoding: [0xc0,0xff,0xa2,0x01]
 	vaddw.u8	q8, q8, d18
-@ CHECK: vaddw.u16	q8, q8, d18     @ encoding: [0xa2,0x01,0xd0,0xff]
+@ CHECK: vaddw.u16	q8, q8, d18     @ encoding: [0xd0,0xff,0xa2,0x01]
 	vaddw.u16	q8, q8, d18
-@ CHECK: vaddw.u32	q8, q8, d18     @ encoding: [0xa2,0x01,0xe0,0xff]
+@ CHECK: vaddw.u32	q8, q8, d18     @ encoding: [0xe0,0xff,0xa2,0x01]
 	vaddw.u32	q8, q8, d18
 
-@ CHECK: vhadd.s8	d16, d16, d17   @ encoding: [0xa1,0x00,0x40,0xef]
+@ CHECK: vhadd.s8	d16, d16, d17   @ encoding: [0x40,0xef,0xa1,0x00]
 	vhadd.s8	d16, d16, d17
-@ CHECK: vhadd.s16	d16, d16, d17   @ encoding: [0xa1,0x00,0x50,0xef]
+@ CHECK: vhadd.s16	d16, d16, d17   @ encoding: [0x50,0xef,0xa1,0x00]
 	vhadd.s16	d16, d16, d17
-@ CHECK: vhadd.s32	d16, d16, d17   @ encoding: [0xa1,0x00,0x60,0xef]
+@ CHECK: vhadd.s32	d16, d16, d17   @ encoding: [0x60,0xef,0xa1,0x00]
 	vhadd.s32	d16, d16, d17
-@ CHECK: vhadd.u8	d16, d16, d17   @ encoding: [0xa1,0x00,0x40,0xff]
+@ CHECK: vhadd.u8	d16, d16, d17   @ encoding: [0x40,0xff,0xa1,0x00]
 	vhadd.u8	d16, d16, d17
-@ CHECK: vhadd.u16	d16, d16, d17   @ encoding: [0xa1,0x00,0x50,0xff]
+@ CHECK: vhadd.u16	d16, d16, d17   @ encoding: [0x50,0xff,0xa1,0x00]
 	vhadd.u16	d16, d16, d17
-@ CHECK: vhadd.u32	d16, d16, d17   @ encoding: [0xa1,0x00,0x60,0xff]
+@ CHECK: vhadd.u32	d16, d16, d17   @ encoding: [0x60,0xff,0xa1,0x00]
 	vhadd.u32	d16, d16, d17
-@ CHECK: vhadd.s8	q8, q8, q9      @ encoding: [0xe2,0x00,0x40,0xef]
+@ CHECK: vhadd.s8	q8, q8, q9      @ encoding: [0x40,0xef,0xe2,0x00]
 	vhadd.s8	q8, q8, q9
-@ CHECK: vhadd.s16	q8, q8, q9      @ encoding: [0xe2,0x00,0x50,0xef]
+@ CHECK: vhadd.s16	q8, q8, q9      @ encoding: [0x50,0xef,0xe2,0x00]
 	vhadd.s16	q8, q8, q9
-@ CHECK: vhadd.s32	q8, q8, q9      @ encoding: [0xe2,0x00,0x60,0xef]
+@ CHECK: vhadd.s32	q8, q8, q9      @ encoding: [0x60,0xef,0xe2,0x00]
 	vhadd.s32	q8, q8, q9
-  @ CHECK: vhadd.u8	q8, q8, q9      @ encoding: [0xe2,0x00,0x40,0xff]
+  @ CHECK: vhadd.u8	q8, q8, q9      @ encoding: [0x40,0xff,0xe2,0x00]
 	vhadd.u8	q8, q8, q9
-@ CHECK: vhadd.u16	q8, q8, q9      @ encoding: [0xe2,0x00,0x50,0xff]
+@ CHECK: vhadd.u16	q8, q8, q9      @ encoding: [0x50,0xff,0xe2,0x00]
 	vhadd.u16	q8, q8, q9
-@ CHECK: vhadd.u32	q8, q8, q9      @ encoding: [0xe2,0x00,0x60,0xff]
+@ CHECK: vhadd.u32	q8, q8, q9      @ encoding: [0x60,0xff,0xe2,0x00]
 	vhadd.u32	q8, q8, q9
 	
-@ CHECK: vrhadd.s8	d16, d16, d17   @ encoding: [0xa1,0x01,0x40,0xef]
+@ CHECK: vrhadd.s8	d16, d16, d17   @ encoding: [0x40,0xef,0xa1,0x01]
 	vrhadd.s8	d16, d16, d17
-@ CHECK: vrhadd.s16	d16, d16, d17   @ encoding: [0xa1,0x01,0x50,0xef]
+@ CHECK: vrhadd.s16	d16, d16, d17   @ encoding: [0x50,0xef,0xa1,0x01]
 	vrhadd.s16	d16, d16, d17
-@ CHECK: vrhadd.s32	d16, d16, d17   @ encoding: [0xa1,0x01,0x60,0xef]
+@ CHECK: vrhadd.s32	d16, d16, d17   @ encoding: [0x60,0xef,0xa1,0x01]
 	vrhadd.s32	d16, d16, d17
-@ CHECK: vrhadd.u8	d16, d16, d17   @ encoding: [0xa1,0x01,0x40,0xff]
+@ CHECK: vrhadd.u8	d16, d16, d17   @ encoding: [0x40,0xff,0xa1,0x01]
 	vrhadd.u8	d16, d16, d17
-@ CHECK: vrhadd.u16	d16, d16, d17   @ encoding: [0xa1,0x01,0x50,0xff]
+@ CHECK: vrhadd.u16	d16, d16, d17   @ encoding: [0x50,0xff,0xa1,0x01]
 	vrhadd.u16	d16, d16, d17
-@ CHECK: vrhadd.u32	d16, d16, d17   @ encoding: [0xa1,0x01,0x60,0xff]
+@ CHECK: vrhadd.u32	d16, d16, d17   @ encoding: [0x60,0xff,0xa1,0x01]
 	vrhadd.u32	d16, d16, d17
-@ CHECK: vrhadd.s8	q8, q8, q9      @ encoding: [0xe2,0x01,0x40,0xef]
+@ CHECK: vrhadd.s8	q8, q8, q9      @ encoding: [0x40,0xef,0xe2,0x01]
 	vrhadd.s8	q8, q8, q9
-@ CHECK: vrhadd.s16	q8, q8, q9      @ encoding: [0xe2,0x01,0x50,0xef]
+@ CHECK: vrhadd.s16	q8, q8, q9      @ encoding: [0x50,0xef,0xe2,0x01]
 	vrhadd.s16	q8, q8, q9
-@ CHECK: vrhadd.s32	q8, q8, q9      @ encoding: [0xe2,0x01,0x60,0xef]
+@ CHECK: vrhadd.s32	q8, q8, q9      @ encoding: [0x60,0xef,0xe2,0x01]
 	vrhadd.s32	q8, q8, q9
-@ CHECK: vrhadd.u8	q8, q8, q9      @ encoding: [0xe2,0x01,0x40,0xff]
+@ CHECK: vrhadd.u8	q8, q8, q9      @ encoding: [0x40,0xff,0xe2,0x01]
 	vrhadd.u8	q8, q8, q9
-@ CHECK: vrhadd.u16	q8, q8, q9      @ encoding: [0xe2,0x01,0x50,0xff]
+@ CHECK: vrhadd.u16	q8, q8, q9      @ encoding: [0x50,0xff,0xe2,0x01]
 	vrhadd.u16	q8, q8, q9
-@ CHECK: vrhadd.u32	q8, q8, q9      @ encoding: [0xe2,0x01,0x60,0xff]
+@ CHECK: vrhadd.u32	q8, q8, q9      @ encoding: [0x60,0xff,0xe2,0x01]
 	vrhadd.u32	q8, q8, q9
 
-@ CHECK: vqadd.s8	d16, d16, d17   @ encoding: [0xb1,0x00,0x40,0xef]
+@ CHECK: vqadd.s8	d16, d16, d17   @ encoding: [0x40,0xef,0xb1,0x00]
 	vqadd.s8	d16, d16, d17
-@ CHECK: vqadd.s16	d16, d16, d17   @ encoding: [0xb1,0x00,0x50,0xef]
+@ CHECK: vqadd.s16	d16, d16, d17   @ encoding: [0x50,0xef,0xb1,0x00]
 	vqadd.s16	d16, d16, d17
-@ CHECK: vqadd.s32	d16, d16, d17   @ encoding: [0xb1,0x00,0x60,0xef]
+@ CHECK: vqadd.s32	d16, d16, d17   @ encoding: [0x60,0xef,0xb1,0x00]
 	vqadd.s32	d16, d16, d17
-@ CHECK: vqadd.s64	d16, d16, d17   @ encoding: [0xb1,0x00,0x70,0xef]
+@ CHECK: vqadd.s64	d16, d16, d17   @ encoding: [0x70,0xef,0xb1,0x00]
 	vqadd.s64	d16, d16, d17
-@ CHECK: vqadd.u8	d16, d16, d17   @ encoding: [0xb1,0x00,0x40,0xff]
+@ CHECK: vqadd.u8	d16, d16, d17   @ encoding: [0x40,0xff,0xb1,0x00]
 	vqadd.u8	d16, d16, d17
-@ CHECK: vqadd.u16	d16, d16, d17   @ encoding: [0xb1,0x00,0x50,0xff]
+@ CHECK: vqadd.u16	d16, d16, d17   @ encoding: [0x50,0xff,0xb1,0x00]
 	vqadd.u16	d16, d16, d17
-@ CHECK: vqadd.u32	d16, d16, d17   @ encoding: [0xb1,0x00,0x60,0xff]
+@ CHECK: vqadd.u32	d16, d16, d17   @ encoding: [0x60,0xff,0xb1,0x00]
 	vqadd.u32	d16, d16, d17
-@ CHECK: vqadd.u64	d16, d16, d17   @ encoding: [0xb1,0x00,0x70,0xff]
+@ CHECK: vqadd.u64	d16, d16, d17   @ encoding: [0x70,0xff,0xb1,0x00]
 	vqadd.u64	d16, d16, d17
-@ CHECK: vqadd.s8	q8, q8, q9      @ encoding: [0xf2,0x00,0x40,0xef]
+@ CHECK: vqadd.s8	q8, q8, q9      @ encoding: [0x40,0xef,0xf2,0x00]
 	vqadd.s8	q8, q8, q9
-@ CHECK: vqadd.s16	q8, q8, q9      @ encoding: [0xf2,0x00,0x50,0xef]
+@ CHECK: vqadd.s16	q8, q8, q9      @ encoding: [0x50,0xef,0xf2,0x00]
 	vqadd.s16	q8, q8, q9
-@ CHECK: vqadd.s32	q8, q8, q9      @ encoding: [0xf2,0x00,0x60,0xef]
+@ CHECK: vqadd.s32	q8, q8, q9      @ encoding: [0x60,0xef,0xf2,0x00]
 	vqadd.s32	q8, q8, q9
-@ CHECK: vqadd.s64	q8, q8, q9      @ encoding: [0xf2,0x00,0x70,0xef]
+@ CHECK: vqadd.s64	q8, q8, q9      @ encoding: [0x70,0xef,0xf2,0x00]
 	vqadd.s64	q8, q8, q9
-@ CHECK: vqadd.u8	q8, q8, q9      @ encoding: [0xf2,0x00,0x40,0xff]
+@ CHECK: vqadd.u8	q8, q8, q9      @ encoding: [0x40,0xff,0xf2,0x00]
 	vqadd.u8	q8, q8, q9
-@ CHECK: vqadd.u16	q8, q8, q9      @ encoding: [0xf2,0x00,0x50,0xff]
+@ CHECK: vqadd.u16	q8, q8, q9      @ encoding: [0x50,0xff,0xf2,0x00]
 	vqadd.u16	q8, q8, q9
-@ CHECK: vqadd.u32	q8, q8, q9      @ encoding: [0xf2,0x00,0x60,0xff]
+@ CHECK: vqadd.u32	q8, q8, q9      @ encoding: [0x60,0xff,0xf2,0x00]
 	vqadd.u32	q8, q8, q9
-@ CHECK: vqadd.u64	q8, q8, q9      @ encoding: [0xf2,0x00,0x70,0xff]
+@ CHECK: vqadd.u64	q8, q8, q9      @ encoding: [0x70,0xff,0xf2,0x00]
 	vqadd.u64	q8, q8, q9
 
-@ CHECK: vaddhn.i16	d16, q8, q9     @ encoding: [0xa2,0x04,0xc0,0xef]
+@ CHECK: vaddhn.i16	d16, q8, q9     @ encoding: [0xc0,0xef,0xa2,0x04]
 	vaddhn.i16	d16, q8, q9
-@ CHECK: vaddhn.i32	d16, q8, q9     @ encoding: [0xa2,0x04,0xd0,0xef]
+@ CHECK: vaddhn.i32	d16, q8, q9     @ encoding: [0xd0,0xef,0xa2,0x04]
 	vaddhn.i32	d16, q8, q9
-@ CHECK: vaddhn.i64	d16, q8, q9     @ encoding: [0xa2,0x04,0xe0,0xef]
+@ CHECK: vaddhn.i64	d16, q8, q9     @ encoding: [0xe0,0xef,0xa2,0x04]
 	vaddhn.i64	d16, q8, q9
-@ CHECK: vraddhn.i16	d16, q8, q9     @ encoding: [0xa2,0x04,0xc0,0xff]
+@ CHECK: vraddhn.i16	d16, q8, q9     @ encoding: [0xc0,0xff,0xa2,0x04]
 	vraddhn.i16	d16, q8, q9
-@ CHECK: vraddhn.i32	d16, q8, q9     @ encoding: [0xa2,0x04,0xd0,0xff]
+@ CHECK: vraddhn.i32	d16, q8, q9     @ encoding: [0xd0,0xff,0xa2,0x04]
 	vraddhn.i32	d16, q8, q9
-@ CHECK: vraddhn.i64	d16, q8, q9     @ encoding: [0xa2,0x04,0xe0,0xff]
+@ CHECK: vraddhn.i64	d16, q8, q9     @ encoding: [0xe0,0xff,0xa2,0x04]
 	vraddhn.i64	d16, q8, q9
diff --git a/test/MC/ARM/neont2-cmp-encoding.s b/test/MC/ARM/neont2-cmp-encoding.s
index 9b0096048e..e0f0a2c677 100644
--- a/test/MC/ARM/neont2-cmp-encoding.s
+++ b/test/MC/ARM/neont2-cmp-encoding.s
@@ -2,35 +2,35 @@
 
 .code 16
 
-@ CHECK: vcvt.s32.f32	d16, d16        @ encoding: [0x20,0x07,0xfb,0xff]
+@ CHECK: vcvt.s32.f32	d16, d16        @ encoding: [0xfb,0xff,0x20,0x07]
 	vcvt.s32.f32	d16, d16
-@ CHECK: vcvt.u32.f32	d16, d16        @ encoding: [0xa0,0x07,0xfb,0xff]
+@ CHECK: vcvt.u32.f32	d16, d16        @ encoding: [0xfb,0xff,0xa0,0x07]
 	vcvt.u32.f32	d16, d16
-@ CHECK: vcvt.f32.s32	d16, d16        @ encoding: [0x20,0x06,0xfb,0xff]
+@ CHECK: vcvt.f32.s32	d16, d16        @ encoding: [0xfb,0xff,0x20,0x06]
 	vcvt.f32.s32	d16, d16
-@ CHECK: vcvt.f32.u32	d16, d16        @ encoding: [0xa0,0x06,0xfb,0xff]
+@ CHECK: vcvt.f32.u32	d16, d16        @ encoding: [0xfb,0xff,0xa0,0x06]
 	vcvt.f32.u32	d16, d16
-@ CHECK: vcvt.s32.f32	q8, q8          @ encoding: [0x60,0x07,0xfb,0xff]
+@ CHECK: vcvt.s32.f32	q8, q8          @ encoding: [0xfb,0xff,0x60,0x07]
 	vcvt.s32.f32	q8, q8
-@ CHECK: vcvt.u32.f32	q8, q8          @ encoding: [0xe0,0x07,0xfb,0xff]
+@ CHECK: vcvt.u32.f32	q8, q8          @ encoding: [0xfb,0xff,0xe0,0x07]
 	vcvt.u32.f32	q8, q8
-@ CHECK: vcvt.f32.s32	q8, q8          @ encoding: [0x60,0x06,0xfb,0xff]
+@ CHECK: vcvt.f32.s32	q8, q8          @ encoding: [0xfb,0xff,0x60,0x06]
 	vcvt.f32.s32	q8, q8
-@ CHECK: vcvt.f32.u32	q8, q8          @ encoding: [0xe0,0x06,0xfb,0xff]
+@ CHECK: vcvt.f32.u32	q8, q8          @ encoding: [0xfb,0xff,0xe0,0x06]
 	vcvt.f32.u32	q8, q8
-@ CHECK: vcvt.s32.f32	d16, d16, #1    @ encoding: [0x30,0x0f,0xff,0xef]
+@ CHECK: vcvt.s32.f32	d16, d16, #1    @ encoding: [0xff,0xef,0x30,0x0f]
 	vcvt.s32.f32	d16, d16, #1
-@ CHECK: vcvt.u32.f32	d16, d16, #1    @ encoding: [0x30,0x0f,0xff,0xff]
+@ CHECK: vcvt.u32.f32	d16, d16, #1    @ encoding: [0xff,0xff,0x30,0x0f]
 	vcvt.u32.f32	d16, d16, #1
-@ CHECK: vcvt.f32.s32	d16, d16, #1    @ encoding: [0x30,0x0e,0xff,0xef]
+@ CHECK: vcvt.f32.s32	d16, d16, #1    @ encoding: [0xff,0xef,0x30,0x0e]
 	vcvt.f32.s32	d16, d16, #1
-@ CHECK: vcvt.f32.u32	d16, d16, #1    @ encoding: [0x30,0x0e,0xff,0xff]
+@ CHECK: vcvt.f32.u32	d16, d16, #1    @ encoding: [0xff,0xff,0x30,0x0e]
 	vcvt.f32.u32	d16, d16, #1
-@ CHECK: vcvt.s32.f32	q8, q8, #1      @ encoding: [0x70,0x0f,0xff,0xef]
+@ CHECK: vcvt.s32.f32	q8, q8, #1      @ encoding: [0xff,0xef,0x70,0x0f]
 	vcvt.s32.f32	q8, q8, #1
-@ CHECK: vcvt.u32.f32	q8, q8, #1      @ encoding: [0x70,0x0f,0xff,0xff]
+@ CHECK: vcvt.u32.f32	q8, q8, #1      @ encoding: [0xff,0xff,0x70,0x0f]
 	vcvt.u32.f32	q8, q8, #1
-@ CHECK: vcvt.f32.s32	q8, q8, #1      @ encoding: [0x70,0x0e,0xff,0xef]
+@ CHECK: vcvt.f32.s32	q8, q8, #1      @ encoding: [0xff,0xef,0x70,0x0e]
 	vcvt.f32.s32	q8, q8, #1
-@ CHECK: vcvt.f32.u32	q8, q8, #1      @ encoding: [0x70,0x0e,0xff,0xff]
+@ CHECK: vcvt.f32.u32	q8, q8, #1      @ encoding: [0xff,0xff,0x70,0x0e]
 	vcvt.f32.u32	q8, q8, #1
diff --git a/test/MC/ARM/neont2-convert-encoding.s b/test/MC/ARM/neont2-convert-encoding.s
index 9b0096048e..e0f0a2c677 100644
--- a/test/MC/ARM/neont2-convert-encoding.s
+++ b/test/MC/ARM/neont2-convert-encoding.s
@@ -2,35 +2,35 @@
 
 .code 16
 
-@ CHECK: vcvt.s32.f32	d16, d16        @ encoding: [0x20,0x07,0xfb,0xff]
+@ CHECK: vcvt.s32.f32	d16, d16        @ encoding: [0xfb,0xff,0x20,0x07]
 	vcvt.s32.f32	d16, d16
-@ CHECK: vcvt.u32.f32	d16, d16        @ encoding: [0xa0,0x07,0xfb,0xff]
+@ CHECK: vcvt.u32.f32	d16, d16        @ encoding: [0xfb,0xff,0xa0,0x07]
 	vcvt.u32.f32	d16, d16
-@ CHECK: vcvt.f32.s32	d16, d16        @ encoding: [0x20,0x06,0xfb,0xff]
+@ CHECK: vcvt.f32.s32	d16, d16        @ encoding: [0xfb,0xff,0x20,0x06]
 	vcvt.f32.s32	d16, d16
-@ CHECK: vcvt.f32.u32	d16, d16        @ encoding: [0xa0,0x06,0xfb,0xff]
+@ CHECK: vcvt.f32.u32	d16, d16        @ encoding: [0xfb,0xff,0xa0,0x06]
 	vcvt.f32.u32	d16, d16
-@ CHECK: vcvt.s32.f32	q8, q8          @ encoding: [0x60,0x07,0xfb,0xff]
+@ CHECK: vcvt.s32.f32	q8, q8          @ encoding: [0xfb,0xff,0x60,0x07]
 	vcvt.s32.f32	q8, q8
-@ CHECK: vcvt.u32.f32	q8, q8          @ encoding: [0xe0,0x07,0xfb,0xff]
+@ CHECK: vcvt.u32.f32	q8, q8          @ encoding: [0xfb,0xff,0xe0,0x07]
 	vcvt.u32.f32	q8, q8
-@ CHECK: vcvt.f32.s32	q8, q8          @ encoding: [0x60,0x06,0xfb,0xff]
+@ CHECK: vcvt.f32.s32	q8, q8          @ encoding: [0xfb,0xff,0x60,0x06]
 	vcvt.f32.s32	q8, q8
-@ CHECK: vcvt.f32.u32	q8, q8          @ encoding: [0xe0,0x06,0xfb,0xff]
+@ CHECK: vcvt.f32.u32	q8, q8          @ encoding: [0xfb,0xff,0xe0,0x06]
 	vcvt.f32.u32	q8, q8
-@ CHECK: vcvt.s32.f32	d16, d16, #1    @ encoding: [0x30,0x0f,0xff,0xef]
+@ CHECK: vcvt.s32.f32	d16, d16, #1    @ encoding: [0xff,0xef,0x30,0x0f]
 	vcvt.s32.f32	d16, d16, #1
-@ CHECK: vcvt.u32.f32	d16, d16, #1    @ encoding: [0x30,0x0f,0xff,0xff]
+@ CHECK: vcvt.u32.f32	d16, d16, #1    @ encoding: [0xff,0xff,0x30,0x0f]
 	vcvt.u32.f32	d16, d16, #1
-@ CHECK: vcvt.f32.s32	d16, d16, #1    @ encoding: [0x30,0x0e,0xff,0xef]
+@ CHECK: vcvt.f32.s32	d16, d16, #1    @ encoding: [0xff,0xef,0x30,0x0e]
 	vcvt.f32.s32	d16, d16, #1
-@ CHECK: vcvt.f32.u32	d16, d16, #1    @ encoding: [0x30,0x0e,0xff,0xff]
+@ CHECK: vcvt.f32.u32	d16, d16, #1    @ encoding: [0xff,0xff,0x30,0x0e]
 	vcvt.f32.u32	d16, d16, #1
-@ CHECK: vcvt.s32.f32	q8, q8, #1      @ encoding: [0x70,0x0f,0xff,0xef]
+@ CHECK: vcvt.s32.f32	q8, q8, #1      @ encoding: [0xff,0xef,0x70,0x0f]
 	vcvt.s32.f32	q8, q8, #1
-@ CHECK: vcvt.u32.f32	q8, q8, #1      @ encoding: [0x70,0x0f,0xff,0xff]
+@ CHECK: vcvt.u32.f32	q8, q8, #1      @ encoding: [0xff,0xff,0x70,0x0f]
 	vcvt.u32.f32	q8, q8, #1
-@ CHECK: vcvt.f32.s32	q8, q8, #1      @ encoding: [0x70,0x0e,0xff,0xef]
+@ CHECK: vcvt.f32.s32	q8, q8, #1      @ encoding: [0xff,0xef,0x70,0x0e]
 	vcvt.f32.s32	q8, q8, #1
-@ CHECK: vcvt.f32.u32	q8, q8, #1      @ encoding: [0x70,0x0e,0xff,0xff]
+@ CHECK: vcvt.f32.u32	q8, q8, #1      @ encoding: [0xff,0xff,0x70,0x0e]
 	vcvt.f32.u32	q8, q8, #1
diff --git a/test/MC/ARM/neont2-minmax-encoding.s b/test/MC/ARM/neont2-minmax-encoding.s
index 802b87c948..a29bed3c2d 100644
--- a/test/MC/ARM/neont2-minmax-encoding.s
+++ b/test/MC/ARM/neont2-minmax-encoding.s
@@ -2,59 +2,59 @@
 
 .code 16
 
-@ CHECK: vmin.s8	d16, d16, d17           @ encoding: [0xb1,0x06,0x40,0xef]
+@ CHECK: vmin.s8	d16, d16, d17           @ encoding: [0x40,0xef,0xb1,0x06]
 	vmin.s8	d16, d16, d17
-@ CHECK: vmin.s16	d16, d16, d17   @ encoding: [0xb1,0x06,0x50,0xef]
+@ CHECK: vmin.s16	d16, d16, d17   @ encoding: [0x50,0xef,0xb1,0x06]
 	vmin.s16	d16, d16, d17
-@ CHECK: vmin.s32	d16, d16, d17   @ encoding: [0xb1,0x06,0x60,0xef]
+@ CHECK: vmin.s32	d16, d16, d17   @ encoding: [0x60,0xef,0xb1,0x06]
 	vmin.s32	d16, d16, d17
-@ CHECK: vmin.u8	d16, d16, d17           @ encoding: [0xb1,0x06,0x40,0xff]
+@ CHECK: vmin.u8	d16, d16, d17           @ encoding: [0x40,0xff,0xb1,0x06]
 	vmin.u8	d16, d16, d17
-@ CHECK: vmin.u16	d16, d16, d17   @ encoding: [0xb1,0x06,0x50,0xff]
+@ CHECK: vmin.u16	d16, d16, d17   @ encoding: [0x50,0xff,0xb1,0x06]
 	vmin.u16	d16, d16, d17
-@ CHECK: vmin.u32	d16, d16, d17   @ encoding: [0xb1,0x06,0x60,0xff]
+@ CHECK: vmin.u32	d16, d16, d17   @ encoding: [0x60,0xff,0xb1,0x06]
 	vmin.u32	d16, d16, d17
-@ CHECK: vmin.f32	d16, d16, d17   @ encoding: [0xa1,0x0f,0x60,0xef]
+@ CHECK: vmin.f32	d16, d16, d17   @ encoding: [0x60,0xef,0xa1,0x0f]
 	vmin.f32	d16, d16, d17
-@ CHECK: vmin.s8	q8, q8, q9              @ encoding: [0xf2,0x06,0x40,0xef]
+@ CHECK: vmin.s8	q8, q8, q9              @ encoding: [0x40,0xef,0xf2,0x06]
 	vmin.s8	q8, q8, q9
-@ CHECK: vmin.s16	q8, q8, q9      @ encoding: [0xf2,0x06,0x50,0xef]
+@ CHECK: vmin.s16	q8, q8, q9      @ encoding: [0x50,0xef,0xf2,0x06]
 	vmin.s16	q8, q8, q9
-@ CHECK: vmin.s32	q8, q8, q9      @ encoding: [0xf2,0x06,0x60,0xef]
+@ CHECK: vmin.s32	q8, q8, q9      @ encoding: [0x60,0xef,0xf2,0x06]
 	vmin.s32	q8, q8, q9
-@ CHECK: vmin.u8	q8, q8, q9              @ encoding: [0xf2,0x06,0x40,0xff]
+@ CHECK: vmin.u8	q8, q8, q9              @ encoding: [0x40,0xff,0xf2,0x06]
 	vmin.u8	q8, q8, q9
-@ CHECK: vmin.u16	q8, q8, q9      @ encoding: [0xf2,0x06,0x50,0xff]
+@ CHECK: vmin.u16	q8, q8, q9      @ encoding: [0x50,0xff,0xf2,0x06]
 	vmin.u16	q8, q8, q9
-@ CHECK: vmin.u32	q8, q8, q9      @ encoding: [0xf2,0x06,0x60,0xff]
+@ CHECK: vmin.u32	q8, q8, q9      @ encoding: [0x60,0xff,0xf2,0x06]
 	vmin.u32	q8, q8, q9
-@ CHECK: vmin.f32	q8, q8, q9      @ encoding: [0xe2,0x0f,0x60,0xef]
+@ CHECK: vmin.f32	q8, q8, q9      @ encoding: [0x60,0xef,0xe2,0x0f]
 	vmin.f32	q8, q8, q9
-@ CHECK: vmax.s8	d16, d16, d17           @ encoding: [0xa1,0x06,0x40,0xef]
+@ CHECK: vmax.s8	d16, d16, d17           @ encoding: [0x40,0xef,0xa1,0x06]
 	vmax.s8	d16, d16, d17
-@ CHECK: vmax.s16	d16, d16, d17   @ encoding: [0xa1,0x06,0x50,0xef]
+@ CHECK: vmax.s16	d16, d16, d17   @ encoding: [0x50,0xef,0xa1,0x06]
 	vmax.s16	d16, d16, d17
-@ CHECK: vmax.s32	d16, d16, d17   @ encoding: [0xa1,0x06,0x60,0xef]
+@ CHECK: vmax.s32	d16, d16, d17   @ encoding: [0x60,0xef,0xa1,0x06]
 	vmax.s32	d16, d16, d17
-@ CHECK: vmax.u8	d16, d16, d17           @ encoding: [0xa1,0x06,0x40,0xff]
+@ CHECK: vmax.u8	d16, d16, d17           @ encoding: [0x40,0xff,0xa1,0x06]
 	vmax.u8	d16, d16, d17
-@ CHECK: vmax.u16	d16, d16, d17   @ encoding: [0xa1,0x06,0x50,0xff]
+@ CHECK: vmax.u16	d16, d16, d17   @ encoding: [0x50,0xff,0xa1,0x06]
 	vmax.u16	d16, d16, d17
-@ CHECK: vmax.u32	d16, d16, d17   @ encoding: [0xa1,0x06,0x60,0xff]
+@ CHECK: vmax.u32	d16, d16, d17   @ encoding: [0x60,0xff,0xa1,0x06]
 	vmax.u32	d16, d16, d17
-@ CHECK: vmax.f32	d16, d16, d17   @ encoding: [0xa1,0x0f,0x40,0xef]
+@ CHECK: vmax.f32	d16, d16, d17   @ encoding: [0x40,0xef,0xa1,0x0f]
 	vmax.f32	d16, d16, d17
-@ CHECK: vmax.s8	q8, q8, q9              @ encoding: [0xe2,0x06,0x40,0xef]
+@ CHECK: vmax.s8	q8, q8, q9              @ encoding: [0x40,0xef,0xe2,0x06]
 	vmax.s8	q8, q8, q9
-@ CHECK: vmax.s16	q8, q8, q9      @ encoding: [0xe2,0x06,0x50,0xef]
+@ CHECK: vmax.s16	q8, q8, q9      @ encoding: [0x50,0xef,0xe2,0x06]
 	vmax.s16	q8, q8, q9
-@ CHECK: vmax.s32	q8, q8, q9      @ encoding: [0xe2,0x06,0x60,0xef]
+@ CHECK: vmax.s32	q8, q8, q9      @ encoding: [0x60,0xef,0xe2,0x06]
 	vmax.s32	q8, q8, q9
-@ CHECK: vmax.u8	q8, q8, q9              @ encoding: [0xe2,0x06,0x40,0xff]
+@ CHECK: vmax.u8	q8, q8, q9              @ encoding: [0x40,0xff,0xe2,0x06]
 	vmax.u8	q8, q8, q9
-@ CHECK: vmax.u16	q8, q8, q9      @ encoding: [0xe2,0x06,0x50,0xff]
+@ CHECK: vmax.u16	q8, q8, q9      @ encoding: [0x50,0xff,0xe2,0x06]
 	vmax.u16	q8, q8, q9
-@ CHECK: vmax.u32	q8, q8, q9      @ encoding: [0xe2,0x06,0x60,0xff]
+@ CHECK: vmax.u32	q8, q8, q9      @ encoding: [0x60,0xff,0xe2,0x06]
 	vmax.u32	q8, q8, q9
-@ CHECK: vmax.f32	q8, q8, q9      @ encoding: [0xe2,0x0f,0x40,0xef]
+@ CHECK: vmax.f32	q8, q8, q9      @ encoding: [0x40,0xef,0xe2,0x0f]
 	vmax.f32	q8, q8, q9
diff --git a/test/MC/ARM/neont2-mul-encoding.s b/test/MC/ARM/neont2-mul-encoding.s
index 4e33beb245..7f1197311b 100644
--- a/test/MC/ARM/neont2-mul-encoding.s
+++ b/test/MC/ARM/neont2-mul-encoding.s
@@ -2,57 +2,57 @@
 
 .code 16
 
-@ CHECK: vmul.i8	d16, d16, d17           @ encoding: [0xb1,0x09,0x40,0xef]
+@ CHECK: vmul.i8	d16, d16, d17           @ encoding: [0x40,0xef,0xb1,0x09]
 	vmul.i8	d16, d16, d17
-@ CHECK: vmul.i16	d16, d16, d17   @ encoding: [0xb1,0x09,0x50,0xef]
+@ CHECK: vmul.i16	d16, d16, d17   @ encoding: [0x50,0xef,0xb1,0x09]
 	vmul.i16	d16, d16, d17
-@ CHECK: vmul.i32	d16, d16, d17   @ encoding: [0xb1,0x09,0x60,0xef]
+@ CHECK: vmul.i32	d16, d16, d17   @ encoding: [0x60,0xef,0xb1,0x09]
 	vmul.i32	d16, d16, d17
-@ CHECK: vmul.f32	d16, d16, d17   @ encoding: [0xb1,0x0d,0x40,0xff]
+@ CHECK: vmul.f32	d16, d16, d17   @ encoding: [0x40,0xff,0xb1,0x0d]
 	vmul.f32	d16, d16, d17
-@ CHECK: vmul.i8	q8, q8, q9              @ encoding: [0xf2,0x09,0x40,0xef]
+@ CHECK: vmul.i8	q8, q8, q9              @ encoding: [0x40,0xef,0xf2,0x09]
 	vmul.i8	q8, q8, q9
-@ CHECK: vmul.i16	q8, q8, q9      @ encoding: [0xf2,0x09,0x50,0xef]
+@ CHECK: vmul.i16	q8, q8, q9      @ encoding: [0x50,0xef,0xf2,0x09]
 	vmul.i16	q8, q8, q9
-@ CHECK: vmul.i32	q8, q8, q9      @ encoding: [0xf2,0x09,0x60,0xef]
+@ CHECK: vmul.i32	q8, q8, q9      @ encoding: [0x60,0xef,0xf2,0x09]
 	vmul.i32	q8, q8, q9
-@ CHECK: vmul.f32	q8, q8, q9      @ encoding: [0xf2,0x0d,0x40,0xff]
+@ CHECK: vmul.f32	q8, q8, q9      @ encoding: [0x40,0xff,0xf2,0x0d]
 	vmul.f32	q8, q8, q9
-@ CHECK: vmul.p8	d16, d16, d17           @ encoding: [0xb1,0x09,0x40,0xff]
+@ CHECK: vmul.p8	d16, d16, d17           @ encoding: [0x40,0xff,0xb1,0x09]
 	vmul.p8	d16, d16, d17
-@ CHECK: vmul.p8	q8, q8, q9              @ encoding: [0xf2,0x09,0x40,0xff]
+@ CHECK: vmul.p8	q8, q8, q9              @ encoding: [0x40,0xff,0xf2,0x09]
 	vmul.p8	q8, q8, q9
-@ CHECK: vqdmulh.s16	d16, d16, d17   @ encoding: [0xa1,0x0b,0x50,0xef]
+@ CHECK: vqdmulh.s16	d16, d16, d17   @ encoding: [0x50,0xef,0xa1,0x0b]
 	vqdmulh.s16	d16, d16, d17
-@ CHECK: vqdmulh.s32	d16, d16, d17   @ encoding: [0xa1,0x0b,0x60,0xef]
+@ CHECK: vqdmulh.s32	d16, d16, d17   @ encoding: [0x60,0xef,0xa1,0x0b]
 	vqdmulh.s32	d16, d16, d17
-@ CHECK: vqdmulh.s16	q8, q8, q9      @ encoding: [0xe2,0x0b,0x50,0xef]
+@ CHECK: vqdmulh.s16	q8, q8, q9      @ encoding: [0x50,0xef,0xe2,0x0b]
 	vqdmulh.s16	q8, q8, q9
-@ CHECK: vqdmulh.s32	q8, q8, q9      @ encoding: [0xe2,0x0b,0x60,0xef]
+@ CHECK: vqdmulh.s32	q8, q8, q9      @ encoding: [0x60,0xef,0xe2,0x0b]
 	vqdmulh.s32	q8, q8, q9
-@ CHECK: vqrdmulh.s16	d16, d16, d17   @ encoding: [0xa1,0x0b,0x50,0xff]
+@ CHECK: vqrdmulh.s16	d16, d16, d17   @ encoding: [0x50,0xff,0xa1,0x0b]
 	vqrdmulh.s16	d16, d16, d17
-@ CHECK: vqrdmulh.s32	d16, d16, d17   @ encoding: [0xa1,0x0b,0x60,0xff]
+@ CHECK: vqrdmulh.s32	d16, d16, d17   @ encoding: [0x60,0xff,0xa1,0x0b]
 	vqrdmulh.s32	d16, d16, d17
-@ CHECK: vqrdmulh.s16	q8, q8, q9      @ encoding: [0xe2,0x0b,0x50,0xff]
+@ CHECK: vqrdmulh.s16	q8, q8, q9      @ encoding: [0x50,0xff,0xe2,0x0b]
 	vqrdmulh.s16	q8, q8, q9
-@ CHECK: vqrdmulh.s32	q8, q8, q9      @ encoding: [0xe2,0x0b,0x60,0xff]
+@ CHECK: vqrdmulh.s32	q8, q8, q9      @ encoding: [0x60,0xff,0xe2,0x0b]
 	vqrdmulh.s32	q8, q8, q9
-@ CHECK: vmull.s8	q8, d16, d17    @ encoding: [0xa1,0x0c,0xc0,0xef]
+@ CHECK: vmull.s8	q8, d16, d17    @ encoding: [0xc0,0xef,0xa1,0x0c]
 	vmull.s8	q8, d16, d17
-@ CHECK: vmull.s16	q8, d16, d17    @ encoding: [0xa1,0x0c,0xd0,0xef]
+@ CHECK: vmull.s16	q8, d16, d17    @ encoding: [0xd0,0xef,0xa1,0x0c]
 	vmull.s16	q8, d16, d17
-@ CHECK: vmull.s32	q8, d16, d17    @ encoding: [0xa1,0x0c,0xe0,0xef]
+@ CHECK: vmull.s32	q8, d16, d17    @ encoding: [0xe0,0xef,0xa1,0x0c]
 	vmull.s32	q8, d16, d17
-@ CHECK: vmull.u8	q8, d16, d17    @ encoding: [0xa1,0x0c,0xc0,0xff]
+@ CHECK: vmull.u8	q8, d16, d17    @ encoding: [0xc0,0xff,0xa1,0x0c]
 	vmull.u8	q8, d16, d17
-@ CHECK: vmull.u16	q8, d16, d17    @ encoding: [0xa1,0x0c,0xd0,0xff]
+@ CHECK: vmull.u16	q8, d16, d17    @ encoding: [0xd0,0xff,0xa1,0x0c]
 	vmull.u16	q8, d16, d17
-@ CHECK: vmull.u32	q8, d16, d17    @ encoding: [0xa1,0x0c,0xe0,0xff]
+@ CHECK: vmull.u32	q8, d16, d17    @ encoding: [0xe0,0xff,0xa1,0x0c]
 	vmull.u32	q8, d16, d17
-@ CHECK: vmull.p8	q8, d16, d17    @ encoding: [0xa1,0x0e,0xc0,0xef]
+@ CHECK: vmull.p8	q8, d16, d17    @ encoding: [0xc0,0xef,0xa1,0x0e]
 	vmull.p8	q8, d16, d17
-@ CHECK: vqdmull.s16	q8, d16, d17    @ encoding: [0xa1,0x0d,0xd0,0xef]
+@ CHECK: vqdmull.s16	q8, d16, d17    @ encoding: [0xd0,0xef,0xa1,0x0d]
 	vqdmull.s16	q8, d16, d17
-@ CHECK: vqdmull.s32	q8, d16, d17    @ encoding: [0xa1,0x0d,0xe0,0xef]
+@ CHECK: vqdmull.s32	q8, d16, d17    @ encoding: [0xe0,0xef,0xa1,0x0d]
 	vqdmull.s32	q8, d16, d17
diff --git a/test/MC/ARM/neont2-neg-encoding.s b/test/MC/ARM/neont2-neg-encoding.s
index fa35fb1e17..d0cb5ec640 100644
--- a/test/MC/ARM/neont2-neg-encoding.s
+++ b/test/MC/ARM/neont2-neg-encoding.s
@@ -2,31 +2,31 @@
 
 .code 16
 
-@ CHECK: vneg.s8	d16, d16                @ encoding: [0xa0,0x03,0xf1,0xff]
+@ CHECK: vneg.s8	d16, d16                @ encoding: [0xf1,0xff,0xa0,0x03]
 	vneg.s8	d16, d16
-@ CHECK: vneg.s16	d16, d16        @ encoding: [0xa0,0x03,0xf5,0xff]
+@ CHECK: vneg.s16	d16, d16        @ encoding: [0xf5,0xff,0xa0,0x03]
 	vneg.s16	d16, d16
-@ CHECK: vneg.s32	d16, d16        @ encoding: [0xa0,0x03,0xf9,0xff]
+@ CHECK: vneg.s32	d16, d16        @ encoding: [0xf9,0xff,0xa0,0x03]
 	vneg.s32	d16, d16
-@ CHECK: vneg.f32	d16, d16        @ encoding: [0xa0,0x07,0xf9,0xff]
+@ CHECK: vneg.f32	d16, d16        @ encoding: [0xf9,0xff,0xa0,0x07]
 	vneg.f32	d16, d16
-@ CHECK: vneg.s8	q8, q8                  @ encoding: [0xe0,0x03,0xf1,0xff]
+@ CHECK: vneg.s8	q8, q8                  @ encoding: [0xf1,0xff,0xe0,0x03]
 	vneg.s8	q8, q8
-@ CHECK: vneg.s16	q8, q8          @ encoding: [0xe0,0x03,0xf5,0xff]
+@ CHECK: vneg.s16	q8, q8          @ encoding: [0xf5,0xff,0xe0,0x03]
 	vneg.s16	q8, q8
-@ CHECK: vneg.s32	q8, q8          @ encoding: [0xe0,0x03,0xf9,0xff]
+@ CHECK: vneg.s32	q8, q8          @ encoding: [0xf9,0xff,0xe0,0x03]
 	vneg.s32	q8, q8
-@ CHECK: vneg.f32	q8, q8          @ encoding: [0xe0,0x07,0xf9,0xff]
+@ CHECK: vneg.f32	q8, q8          @ encoding: [0xf9,0xff,0xe0,0x07]
 	vneg.f32	q8, q8
-@ CHECK: vqneg.s8	d16, d16        @ encoding: [0xa0,0x07,0xf0,0xff]
+@ CHECK: vqneg.s8	d16, d16        @ encoding: [0xf0,0xff,0xa0,0x07]
 	vqneg.s8	d16, d16
-@ CHECK: vqneg.s16	d16, d16        @ encoding: [0xa0,0x07,0xf4,0xff]
+@ CHECK: vqneg.s16	d16, d16        @ encoding: [0xf4,0xff,0xa0,0x07]
 	vqneg.s16	d16, d16
-@ CHECK: vqneg.s32	d16, d16        @ encoding: [0xa0,0x07,0xf8,0xff]
+@ CHECK: vqneg.s32	d16, d16        @ encoding: [0xf8,0xff,0xa0,0x07]
 	vqneg.s32	d16, d16
-@ CHECK: vqneg.s8	q8, q8          @ encoding: [0xe0,0x07,0xf0,0xff]
+@ CHECK: vqneg.s8	q8, q8          @ encoding: [0xf0,0xff,0xe0,0x07]
 	vqneg.s8	q8, q8
-@ CHECK: vqneg.s16	q8, q8          @ encoding: [0xe0,0x07,0xf4,0xff]
+@ CHECK: vqneg.s16	q8, q8          @ encoding: [0xf4,0xff,0xe0,0x07]
 	vqneg.s16	q8, q8
-@ CHECK: vqneg.s32	q8, q8          @ encoding: [0xe0,0x07,0xf8,0xff]
+@ CHECK: vqneg.s32	q8, q8          @ encoding: [0xf8,0xff,0xe0,0x07]
 	vqneg.s32	q8, q8
diff --git a/test/MC/ARM/neont2-reciprocal-encoding.s b/test/MC/ARM/neont2-reciprocal-encoding.s
index 918333b59c..73b6d8f92b 100644
--- a/test/MC/ARM/neont2-reciprocal-encoding.s
+++ b/test/MC/ARM/neont2-reciprocal-encoding.s
@@ -2,27 +2,27 @@
 
 .code 16
 
-@ CHECK: vrecpe.u32	d16, d16        @ encoding: [0x20,0x04,0xfb,0xff]
+@ CHECK: vrecpe.u32	d16, d16        @ encoding: [0xfb,0xff,0x20,0x04]
 	vrecpe.u32	d16, d16
-@ CHECK: vrecpe.u32	q8, q8          @ encoding: [0x60,0x04,0xfb,0xff]
+@ CHECK: vrecpe.u32	q8, q8          @ encoding: [0xfb,0xff,0x60,0x04]
 	vrecpe.u32	q8, q8
-@ CHECK: vrecpe.f32	d16, d16        @ encoding: [0x20,0x05,0xfb,0xff]
+@ CHECK: vrecpe.f32	d16, d16        @ encoding: [0xfb,0xff,0x20,0x05]
 	vrecpe.f32	d16, d16
-@ CHECK: vrecpe.f32	q8, q8          @ encoding: [0x60,0x05,0xfb,0xff]
+@ CHECK: vrecpe.f32	q8, q8          @ encoding: [0xfb,0xff,0x60,0x05]
 	vrecpe.f32	q8, q8
-@ CHECK: vrecps.f32	d16, d16, d17   @ encoding: [0xb1,0x0f,0x40,0xef]
+@ CHECK: vrecps.f32	d16, d16, d17   @ encoding: [0x40,0xef,0xb1,0x0f]
 	vrecps.f32	d16, d16, d17
-@ CHECK: vrecps.f32	q8, q8, q9      @ encoding: [0xf2,0x0f,0x40,0xef]
+@ CHECK: vrecps.f32	q8, q8, q9      @ encoding: [0x40,0xef,0xf2,0x0f]
 	vrecps.f32	q8, q8, q9
-@ CHECK: vrsqrte.u32	d16, d16        @ encoding: [0xa0,0x04,0xfb,0xff]
+@ CHECK: vrsqrte.u32	d16, d16        @ encoding: [0xfb,0xff,0xa0,0x04]
 	vrsqrte.u32	d16, d16
-@ CHECK: vrsqrte.u32	q8, q8          @ encoding: [0xe0,0x04,0xfb,0xff]
+@ CHECK: vrsqrte.u32	q8, q8          @ encoding: [0xfb,0xff,0xe0,0x04]
 	vrsqrte.u32	q8, q8
-@ CHECK: vrsqrte.f32	d16, d16        @ encoding: [0xa0,0x05,0xfb,0xff]
+@ CHECK: vrsqrte.f32	d16, d16        @ encoding: [0xfb,0xff,0xa0,0x05]
 	vrsqrte.f32	d16, d16
-@ CHECK: vrsqrte.f32	q8, q8          @ encoding: [0xe0,0x05,0xfb,0xff]
+@ CHECK: vrsqrte.f32	q8, q8          @ encoding: [0xfb,0xff,0xe0,0x05]
 	vrsqrte.f32	q8, q8
-@ CHECK: vrsqrts.f32	d16, d16, d17   @ encoding: [0xb1,0x0f,0x60,0xef]
+@ CHECK: vrsqrts.f32	d16, d16, d17   @ encoding: [0x60,0xef,0xb1,0x0f]
 	vrsqrts.f32	d16, d16, d17
-@ CHECK: vrsqrts.f32	q8, q8, q9      @ encoding: [0xf2,0x0f,0x60,0xef]
+@ CHECK: vrsqrts.f32	q8, q8, q9      @ encoding: [0x60,0xef,0xf2,0x0f]
 	vrsqrts.f32	q8, q8, q9
diff --git a/test/MC/ARM/neont2-reverse-encoding.s b/test/MC/ARM/neont2-reverse-encoding.s
index 4155492999..80c42f4a65 100644
--- a/test/MC/ARM/neont2-reverse-encoding.s
+++ b/test/MC/ARM/neont2-reverse-encoding.s
@@ -1,26 +1,26 @@
 @ RUN: llvm-mc -mcpu=cortex-a8 -triple thumb-unknown-unkown -show-encoding < %s | FileCheck %s
 
-@ CHECK: vrev64.8	d16, d16        @ encoding: [0x20,0x00,0xf0,0xff]
+@ CHECK: vrev64.8	d16, d16        @ encoding: [0xf0,0xff,0x20,0x00]
 	vrev64.8	d16, d16
-@ CHECK: vrev64.16	d16, d16        @ encoding: [0x20,0x00,0xf4,0xff]
+@ CHECK: vrev64.16	d16, d16        @ encoding: [0xf4,0xff,0x20,0x00]
 	vrev64.16	d16, d16
-@ CHECK: vrev64.32	d16, d16        @ encoding: [0x20,0