Implement aarch64 neon instruction set AdvSIMD (3V Diff), covering the following 26 instructions,

SADDL, UADDL, SADDW, UADDW, SSUBL, USUBL, SSUBW, USUBW, ADDHN, RADDHN, SABAL, UABAL, SUBHN, RSUBHN, SABDL, UABDL, SMLAL, UMLAL, SMLSL, UMLSL, SQDMLAL, SQDMLSL, SMULL, UMULL, SQDMULL, PMULL



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190288 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 411 insertions, 0 deletions

diff --git a/test/MC/AArch64/neon-3vdiff.s b/test/MC/AArch64/neon-3vdiff.s
new file mode 100644
index 0000000..337b94c
--- /dev/null
+++ b/test/MC/AArch64/neon-3vdiff.s
@@ -0,0 +1,411 @@
+// RUN: llvm-mc -triple=aarch64 -mattr=+neon -show-encoding < %s | FileCheck %s
+
+// Check that the assembler can handle the documented syntax for AArch64
+
+//------------------------------------------------------------------------------
+// Instructions with 3 different vector data types
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Long
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Long - Variant 1
+//------------------------------------------------------------------------------
+
+        saddl v0.8h, v1.8b, v2.8b
+        saddl v0.4s, v1.4h, v2.4h
+        saddl v0.2d, v1.2s, v2.2s
+
+// CHECK: saddl	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x00,0x22,0x0e]
+// CHECK: saddl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x00,0x62,0x0e]
+// CHECK: saddl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x00,0xa2,0x0e]
+
+        saddl2 v0.4s, v1.8h, v2.8h
+        saddl2 v0.8h, v1.16b, v2.16b
+        saddl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: saddl2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x00,0x62,0x4e]
+// CHECK: saddl2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x00,0x22,0x4e]
+// CHECK: saddl2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x00,0xa2,0x4e]
+
+        uaddl v0.8h, v1.8b, v2.8b
+        uaddl v0.4s, v1.4h, v2.4h
+        uaddl v0.2d, v1.2s, v2.2s
+
+// CHECK: uaddl	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x00,0x22,0x2e]
+// CHECK: uaddl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x00,0x62,0x2e]
+// CHECK: uaddl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x00,0xa2,0x2e]
+
+        uaddl2 v0.8h, v1.16b, v2.16b
+        uaddl2 v0.4s, v1.8h, v2.8h
+        uaddl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: uaddl2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x00,0x22,0x6e]
+// CHECK: uaddl2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x00,0x62,0x6e]
+// CHECK: uaddl2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x00,0xa2,0x6e]
+
+        ssubl v0.8h, v1.8b, v2.8b
+        ssubl v0.4s, v1.4h, v2.4h
+        ssubl v0.2d, v1.2s, v2.2s
+
+// CHECK: ssubl	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x20,0x22,0x0e]
+// CHECK: ssubl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x20,0x62,0x0e]
+// CHECK: ssubl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x20,0xa2,0x0e]
+
+        ssubl2 v0.8h, v1.16b, v2.16b
+        ssubl2 v0.4s, v1.8h, v2.8h
+        ssubl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: ssubl2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x20,0x22,0x4e]
+// CHECK: ssubl2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x20,0x62,0x4e]
+// CHECK: ssubl2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x20,0xa2,0x4e]
+
+        usubl v0.8h, v1.8b, v2.8b
+        usubl v0.4s, v1.4h, v2.4h
+        usubl v0.2d, v1.2s, v2.2s
+
+// CHECK: usubl	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x20,0x22,0x2e]
+// CHECK: usubl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x20,0x62,0x2e]
+// CHECK: usubl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x20,0xa2,0x2e]
+
+        usubl2 v0.8h, v1.16b, v2.16b
+        usubl2 v0.4s, v1.8h, v2.8h
+        usubl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: usubl2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x20,0x22,0x6e]
+// CHECK: usubl2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x20,0x62,0x6e]
+// CHECK: usubl2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x20,0xa2,0x6e]
+
+        sabal v0.8h, v1.8b, v2.8b
+        sabal v0.4s, v1.4h, v2.4h
+        sabal v0.2d, v1.2s, v2.2s
+
+// CHECK: sabal	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x50,0x22,0x0e]
+// CHECK: sabal	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x50,0x62,0x0e]
+// CHECK: sabal	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x50,0xa2,0x0e]
+
+        sabal2 v0.8h, v1.16b, v2.16b
+        sabal2 v0.4s, v1.8h, v2.8h
+        sabal2 v0.2d, v1.4s, v2.4s
+
+// CHECK: sabal2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x50,0x22,0x4e]
+// CHECK: sabal2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x50,0x62,0x4e]
+// CHECK: sabal2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x50,0xa2,0x4e]
+
+        uabal v0.8h, v1.8b, v2.8b
+        uabal v0.4s, v1.4h, v2.4h
+        uabal v0.2d, v1.2s, v2.2s
+
+// CHECK: uabal	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x50,0x22,0x2e]
+// CHECK: uabal	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x50,0x62,0x2e]
+// CHECK: uabal	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x50,0xa2,0x2e]
+
+        uabal2 v0.8h, v1.16b, v2.16b
+        uabal2 v0.4s, v1.8h, v2.8h
+        uabal2 v0.2d, v1.4s, v2.4s
+
+// CHECK: uabal2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x50,0x22,0x6e]
+// CHECK: uabal2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x50,0x62,0x6e]
+// CHECK: uabal2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x50,0xa2,0x6e]
+
+        sabdl v0.8h, v1.8b, v2.8b
+        sabdl v0.4s, v1.4h, v2.4h
+        sabdl v0.2d, v1.2s, v2.2s
+
+// CHECK: sabdl	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x70,0x22,0x0e]
+// CHECK: sabdl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x70,0x62,0x0e]
+// CHECK: sabdl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x70,0xa2,0x0e]
+
+        sabdl2 v0.8h, v1.16b, v2.16b
+        sabdl2 v0.4s, v1.8h, v2.8h
+        sabdl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: sabdl2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x70,0x22,0x4e]
+// CHECK: sabdl2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x70,0x62,0x4e]
+// CHECK: sabdl2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x70,0xa2,0x4e]
+
+        uabdl v0.8h, v1.8b, v2.8b
+        uabdl v0.4s, v1.4h, v2.4h
+        uabdl v0.2d, v1.2s, v2.2s
+
+// CHECK: uabdl	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x70,0x22,0x2e]
+// CHECK: uabdl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x70,0x62,0x2e]
+// CHECK: uabdl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x70,0xa2,0x2e]
+
+        uabdl2 v0.8h, v1.16b, v2.16b
+        uabdl2 v0.4s, v1.8h, v2.8h
+        uabdl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: uabdl2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x70,0x22,0x6e]
+// CHECK: uabdl2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x70,0x62,0x6e]
+// CHECK: uabdl2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x70,0xa2,0x6e]
+
+        smlal v0.8h, v1.8b, v2.8b
+        smlal v0.4s, v1.4h, v2.4h
+        smlal v0.2d, v1.2s, v2.2s
+
+// CHECK: smlal	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x80,0x22,0x0e]
+// CHECK: smlal	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x80,0x62,0x0e]
+// CHECK: smlal	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x80,0xa2,0x0e]
+
+        smlal2 v0.8h, v1.16b, v2.16b
+        smlal2 v0.4s, v1.8h, v2.8h
+        smlal2 v0.2d, v1.4s, v2.4s
+
+// CHECK: smlal2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x80,0x22,0x4e]
+// CHECK: smlal2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x80,0x62,0x4e]
+// CHECK: smlal2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x80,0xa2,0x4e]
+
+        umlal v0.8h, v1.8b, v2.8b
+        umlal v0.4s, v1.4h, v2.4h
+        umlal v0.2d, v1.2s, v2.2s
+
+// CHECK: umlal	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0x80,0x22,0x2e]
+// CHECK: umlal	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x80,0x62,0x2e]
+// CHECK: umlal	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x80,0xa2,0x2e]
+
+        umlal2 v0.8h, v1.16b, v2.16b
+        umlal2 v0.4s, v1.8h, v2.8h
+        umlal2 v0.2d, v1.4s, v2.4s
+
+// CHECK: umlal2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0x80,0x22,0x6e]
+// CHECK: umlal2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0x80,0x62,0x6e]
+// CHECK: umlal2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0x80,0xa2,0x6e]
+
+        smlsl v0.8h, v1.8b, v2.8b
+        smlsl v0.4s, v1.4h, v2.4h
+        smlsl v0.2d, v1.2s, v2.2s
+
+// CHECK: smlsl	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0xa0,0x22,0x0e]
+// CHECK: smlsl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0xa0,0x62,0x0e]
+// CHECK: smlsl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0xa0,0xa2,0x0e]
+
+        smlsl2 v0.8h, v1.16b, v2.16b
+        smlsl2 v0.4s, v1.8h, v2.8h
+        smlsl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: smlsl2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0xa0,0x22,0x4e]
+// CHECK: smlsl2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0xa0,0x62,0x4e]
+// CHECK: smlsl2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0xa0,0xa2,0x4e]
+
+        umlsl v0.8h, v1.8b, v2.8b
+        umlsl v0.4s, v1.4h, v2.4h
+        umlsl v0.2d, v1.2s, v2.2s
+
+// CHECK: umlsl	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0xa0,0x22,0x2e]
+// CHECK: umlsl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0xa0,0x62,0x2e]
+// CHECK: umlsl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0xa0,0xa2,0x2e]
+
+        umlsl2 v0.8h, v1.16b, v2.16b
+        umlsl2 v0.4s, v1.8h, v2.8h
+        umlsl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: umlsl2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0xa0,0x22,0x6e]
+// CHECK: umlsl2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0xa0,0x62,0x6e]
+// CHECK: umlsl2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0xa0,0xa2,0x6e]
+
+        smull v0.8h, v1.8b, v2.8b
+        smull v0.4s, v1.4h, v2.4h
+        smull v0.2d, v1.2s, v2.2s
+
+// CHECK: smull	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0xc0,0x22,0x0e]
+// CHECK: smull	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0xc0,0x62,0x0e]
+// CHECK: smull	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0xc0,0xa2,0x0e]
+
+        smull2 v0.8h, v1.16b, v2.16b
+        smull2 v0.4s, v1.8h, v2.8h
+        smull2 v0.2d, v1.4s, v2.4s
+
+// CHECK: smull2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0xc0,0x22,0x4e]
+// CHECK: smull2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0xc0,0x62,0x4e]
+// CHECK: smull2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0xc0,0xa2,0x4e]
+
+        umull v0.8h, v1.8b, v2.8b
+        umull v0.4s, v1.4h, v2.4h
+        umull v0.2d, v1.2s, v2.2s
+
+// CHECK: umull	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0xc0,0x22,0x2e]
+// CHECK: umull	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0xc0,0x62,0x2e]
+// CHECK: umull	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0xc0,0xa2,0x2e]
+
+        umull2 v0.8h, v1.16b, v2.16b
+        umull2 v0.4s, v1.8h, v2.8h
+        umull2 v0.2d, v1.4s, v2.4s
+
+// CHECK: umull2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0xc0,0x22,0x6e]
+// CHECK: umull2	v0.4s, v1.8h, v2.8h     // encoding: [0x20,0xc0,0x62,0x6e]
+// CHECK: umull2	v0.2d, v1.4s, v2.4s     // encoding: [0x20,0xc0,0xa2,0x6e]
+
+//------------------------------------------------------------------------------
+// Long - Variant 2
+//------------------------------------------------------------------------------
+
+        sqdmlal v0.4s, v1.4h, v2.4h
+        sqdmlal v0.2d, v1.2s, v2.2s
+
+// CHECK: sqdmlal	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0x90,0x62,0x0e]
+// CHECK: sqdmlal	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0x90,0xa2,0x0e]
+
+        sqdmlal2 v0.4s, v1.8h, v2.8h
+        sqdmlal2 v0.2d, v1.4s, v2.4s
+
+// CHECK: sqdmlal2	v0.4s, v1.8h, v2.8h // encoding: [0x20,0x90,0x62,0x4e]
+// CHECK: sqdmlal2	v0.2d, v1.4s, v2.4s // encoding: [0x20,0x90,0xa2,0x4e]
+
+        sqdmlsl v0.4s, v1.4h, v2.4h
+        sqdmlsl v0.2d, v1.2s, v2.2s
+
+// CHECK: sqdmlsl	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0xb0,0x62,0x0e]
+// CHECK: sqdmlsl	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0xb0,0xa2,0x0e]
+
+        sqdmlsl2 v0.4s, v1.8h, v2.8h
+        sqdmlsl2 v0.2d, v1.4s, v2.4s
+
+// CHECK: sqdmlsl2	v0.4s, v1.8h, v2.8h // encoding: [0x20,0xb0,0x62,0x4e]
+// CHECK: sqdmlsl2	v0.2d, v1.4s, v2.4s // encoding: [0x20,0xb0,0xa2,0x4e]
+
+        sqdmull v0.4s, v1.4h, v2.4h
+        sqdmull v0.2d, v1.2s, v2.2s
+
+// CHECK: sqdmull	v0.4s, v1.4h, v2.4h     // encoding: [0x20,0xd0,0x62,0x0e]
+// CHECK: sqdmull	v0.2d, v1.2s, v2.2s     // encoding: [0x20,0xd0,0xa2,0x0e]
+
+        sqdmull2 v0.4s, v1.8h, v2.8h
+        sqdmull2 v0.2d, v1.4s, v2.4s
+
+// CHECK: sqdmull2	v0.4s, v1.8h, v2.8h // encoding: [0x20,0xd0,0x62,0x4e]
+// CHECK: sqdmull2	v0.2d, v1.4s, v2.4s // encoding: [0x20,0xd0,0xa2,0x4e]
+
+//------------------------------------------------------------------------------
+// Long - Variant 3
+//------------------------------------------------------------------------------
+
+        pmull v0.8h, v1.8b, v2.8b
+
+// CHECK: pmull	v0.8h, v1.8b, v2.8b     // encoding: [0x20,0xe0,0x22,0x0e]
+
+        pmull2 v0.8h, v1.16b, v2.16b
+
+// CHECK: pmull2	v0.8h, v1.16b, v2.16b   // encoding: [0x20,0xe0,0x22,0x4e]
+
+//------------------------------------------------------------------------------
+// Widen
+//------------------------------------------------------------------------------
+
+        saddw v0.8h, v1.8h, v2.8b
+        saddw v0.4s, v1.4s, v2.4h
+        saddw v0.2d, v1.2d, v2.2s
+
+// CHECK: saddw	v0.8h, v1.8h, v2.8b     // encoding: [0x20,0x10,0x22,0x0e]
+// CHECK: saddw	v0.4s, v1.4s, v2.4h     // encoding: [0x20,0x10,0x62,0x0e]
+// CHECK: saddw	v0.2d, v1.2d, v2.2s     // encoding: [0x20,0x10,0xa2,0x0e]
+
+        saddw2 v0.8h, v1.8h, v2.16b
+        saddw2 v0.4s, v1.4s, v2.8h
+        saddw2 v0.2d, v1.2d, v2.4s
+
+// CHECK: saddw2	v0.8h, v1.8h, v2.16b    // encoding: [0x20,0x10,0x22,0x4e]
+// CHECK: saddw2	v0.4s, v1.4s, v2.8h     // encoding: [0x20,0x10,0x62,0x4e]
+// CHECK: saddw2	v0.2d, v1.2d, v2.4s     // encoding: [0x20,0x10,0xa2,0x4e]
+
+        uaddw v0.8h, v1.8h, v2.8b
+        uaddw v0.4s, v1.4s, v2.4h
+        uaddw v0.2d, v1.2d, v2.2s
+
+// CHECK: uaddw	v0.8h, v1.8h, v2.8b     // encoding: [0x20,0x10,0x22,0x2e]
+// CHECK: uaddw	v0.4s, v1.4s, v2.4h     // encoding: [0x20,0x10,0x62,0x2e]
+// CHECK: uaddw	v0.2d, v1.2d, v2.2s     // encoding: [0x20,0x10,0xa2,0x2e]
+
+        uaddw2 v0.8h, v1.8h, v2.16b
+        uaddw2 v0.4s, v1.4s, v2.8h
+        uaddw2 v0.2d, v1.2d, v2.4s
+
+// CHECK: uaddw2	v0.8h, v1.8h, v2.16b    // encoding: [0x20,0x10,0x22,0x6e]
+// CHECK: uaddw2	v0.4s, v1.4s, v2.8h     // encoding: [0x20,0x10,0x62,0x6e]
+// CHECK: uaddw2	v0.2d, v1.2d, v2.4s     // encoding: [0x20,0x10,0xa2,0x6e]
+
+        ssubw v0.8h, v1.8h, v2.8b
+        ssubw v0.4s, v1.4s, v2.4h
+        ssubw v0.2d, v1.2d, v2.2s
+
+// CHECK: ssubw	v0.8h, v1.8h, v2.8b     // encoding: [0x20,0x30,0x22,0x0e]
+// CHECK: ssubw	v0.4s, v1.4s, v2.4h     // encoding: [0x20,0x30,0x62,0x0e]
+// CHECK: ssubw	v0.2d, v1.2d, v2.2s     // encoding: [0x20,0x30,0xa2,0x0e]
+
+        ssubw2 v0.8h, v1.8h, v2.16b
+        ssubw2 v0.4s, v1.4s, v2.8h
+        ssubw2 v0.2d, v1.2d, v2.4s
+
+// CHECK: ssubw2	v0.8h, v1.8h, v2.16b    // encoding: [0x20,0x30,0x22,0x4e]
+// CHECK: ssubw2	v0.4s, v1.4s, v2.8h     // encoding: [0x20,0x30,0x62,0x4e]
+// CHECK: ssubw2	v0.2d, v1.2d, v2.4s     // encoding: [0x20,0x30,0xa2,0x4e]
+
+        usubw v0.8h, v1.8h, v2.8b
+        usubw v0.4s, v1.4s, v2.4h
+        usubw v0.2d, v1.2d, v2.2s
+
+// CHECK: usubw	v0.8h, v1.8h, v2.8b     // encoding: [0x20,0x30,0x22,0x2e]
+// CHECK: usubw	v0.4s, v1.4s, v2.4h     // encoding: [0x20,0x30,0x62,0x2e]
+// CHECK: usubw	v0.2d, v1.2d, v2.2s     // encoding: [0x20,0x30,0xa2,0x2e]
+
+        usubw2 v0.8h, v1.8h, v2.16b
+        usubw2 v0.4s, v1.4s, v2.8h
+        usubw2 v0.2d, v1.2d, v2.4s
+
+// CHECK: usubw2	v0.8h, v1.8h, v2.16b    // encoding: [0x20,0x30,0x22,0x6e]
+// CHECK: usubw2	v0.4s, v1.4s, v2.8h     // encoding: [0x20,0x30,0x62,0x6e]
+// CHECK: usubw2	v0.2d, v1.2d, v2.4s     // encoding: [0x20,0x30,0xa2,0x6e]
+
+//------------------------------------------------------------------------------
+// Narrow
+//------------------------------------------------------------------------------
+
+        addhn v0.8b, v1.8h, v2.8h
+        addhn v0.4h, v1.4s, v2.4s
+        addhn v0.2s, v1.2d, v2.2d
+
+// CHECK: addhn	v0.8b, v1.8h, v2.8h     // encoding: [0x20,0x40,0x22,0x0e]
+// CHECK: addhn	v0.4h, v1.4s, v2.4s     // encoding: [0x20,0x40,0x62,0x0e]
+// CHECK: addhn	v0.2s, v1.2d, v2.2d     // encoding: [0x20,0x40,0xa2,0x0e]
+
+        addhn2 v0.16b, v1.8h, v2.8h
+        addhn2 v0.8h, v1.4s, v2.4s
+        addhn2 v0.4s, v1.2d, v2.2d
+
+// CHECK: addhn2	v0.16b, v1.8h, v2.8h    // encoding: [0x20,0x40,0x22,0x4e]
+// CHECK: addhn2	v0.8h, v1.4s, v2.4s     // encoding: [0x20,0x40,0x62,0x4e]
+// CHECK: addhn2	v0.4s, v1.2d, v2.2d     // encoding: [0x20,0x40,0xa2,0x4e]
+
+        raddhn v0.8b, v1.8h, v2.8h
+        raddhn v0.4h, v1.4s, v2.4s
+        raddhn v0.2s, v1.2d, v2.2d
+
+// CHECK: raddhn	v0.8b, v1.8h, v2.8h     // encoding: [0x20,0x40,0x22,0x2e]
+// CHECK: raddhn	v0.4h, v1.4s, v2.4s     // encoding: [0x20,0x40,0x62,0x2e]
+// CHECK: raddhn	v0.2s, v1.2d, v2.2d     // encoding: [0x20,0x40,0xa2,0x2e]
+
+        raddhn2 v0.16b, v1.8h, v2.8h
+        raddhn2 v0.8h, v1.4s, v2.4s
+        raddhn2 v0.4s, v1.2d, v2.2d
+
+// CHECK: raddhn2	v0.16b, v1.8h, v2.8h    // encoding: [0x20,0x40,0x22,0x6e]
+// CHECK: raddhn2	v0.8h, v1.4s, v2.4s     // encoding: [0x20,0x40,0x62,0x6e]
+// CHECK: raddhn2	v0.4s, v1.2d, v2.2d     // encoding: [0x20,0x40,0xa2,0x6e]
+
+        rsubhn v0.8b, v1.8h, v2.8h
+        rsubhn v0.4h, v1.4s, v2.4s
+        rsubhn v0.2s, v1.2d, v2.2d
+
+// CHECK: rsubhn	v0.8b, v1.8h, v2.8h     // encoding: [0x20,0x60,0x22,0x2e]
+// CHECK: rsubhn	v0.4h, v1.4s, v2.4s     // encoding: [0x20,0x60,0x62,0x2e]
+// CHECK: rsubhn	v0.2s, v1.2d, v2.2d     // encoding: [0x20,0x60,0xa2,0x2e]
+
+        rsubhn2 v0.16b, v1.8h, v2.8h
+        rsubhn2 v0.8h, v1.4s, v2.4s
+        rsubhn2 v0.4s, v1.2d, v2.2d
+
+// CHECK: rsubhn2	v0.16b, v1.8h, v2.8h    // encoding: [0x20,0x60,0x22,0x6e]
+// CHECK: rsubhn2	v0.8h, v1.4s, v2.4s     // encoding: [0x20,0x60,0x62,0x6e]
+// CHECK: rsubhn2	v0.4s, v1.2d, v2.2d     // encoding: [0x20,0x60,0xa2,0x6e]