1 files changed, 74 insertions, 0 deletions
diff --git a/test/MC/AArch64/neon-halving-add-sub.s b/test/MC/AArch64/neon-halving-add-sub.s
new file mode 100644
index 0000000000000..555f1b83b4f34
--- /dev/null
+++ b/test/MC/AArch64/neon-halving-add-sub.s
@@ -0,0 +1,74 @@
+// RUN: llvm-mc -triple aarch64-none-linux-gnu -mattr=+neon -show-encoding < %s | FileCheck %s
+
+// Check that the assembler can handle the documented syntax for AArch64
+
+
+//------------------------------------------------------------------------------
+// Vector Integer Halving Add (Signed)
+//------------------------------------------------------------------------------
+         shadd v0.8b, v1.8b, v2.8b
+         shadd v0.16b, v1.16b, v2.16b
+         shadd v0.4h, v1.4h, v2.4h
+         shadd v0.8h, v1.8h, v2.8h
+         shadd v0.2s, v1.2s, v2.2s
+         shadd v0.4s, v1.4s, v2.4s
+
+// CHECK: shadd v0.8b, v1.8b, v2.8b        // encoding: [0x20,0x04,0x22,0x0e]
+// CHECK: shadd v0.16b, v1.16b, v2.16b     // encoding: [0x20,0x04,0x22,0x4e]
+// CHECK: shadd v0.4h, v1.4h, v2.4h        // encoding: [0x20,0x04,0x62,0x0e]
+// CHECK: shadd v0.8h, v1.8h, v2.8h        // encoding: [0x20,0x04,0x62,0x4e]
+// CHECK: shadd v0.2s, v1.2s, v2.2s        // encoding: [0x20,0x04,0xa2,0x0e]
+// CHECK: shadd v0.4s, v1.4s, v2.4s        // encoding: [0x20,0x04,0xa2,0x4e]
+
+
+//------------------------------------------------------------------------------
+// Vector Integer Halving Add (Unsigned)
+//------------------------------------------------------------------------------
+         uhadd v0.8b, v1.8b, v2.8b
+         uhadd v0.16b, v1.16b, v2.16b
+         uhadd v0.4h, v1.4h, v2.4h
+         uhadd v0.8h, v1.8h, v2.8h
+         uhadd v0.2s, v1.2s, v2.2s
+         uhadd v0.4s, v1.4s, v2.4s
+
+// CHECK: uhadd v0.8b, v1.8b, v2.8b        // encoding: [0x20,0x04,0x22,0x2e]
+// CHECK: uhadd v0.16b, v1.16b, v2.16b     // encoding: [0x20,0x04,0x22,0x6e]
+// CHECK: uhadd v0.4h, v1.4h, v2.4h        // encoding: [0x20,0x04,0x62,0x2e]
+// CHECK: uhadd v0.8h, v1.8h, v2.8h        // encoding: [0x20,0x04,0x62,0x6e]
+// CHECK: uhadd v0.2s, v1.2s, v2.2s        // encoding: [0x20,0x04,0xa2,0x2e]
+// CHECK: uhadd v0.4s, v1.4s, v2.4s        // encoding: [0x20,0x04,0xa2,0x6e]
+
+//------------------------------------------------------------------------------
+// Vector Integer Halving Sub (Signed)
+//------------------------------------------------------------------------------
+         shsub v0.8b, v1.8b, v2.8b
+         shsub v0.16b, v1.16b, v2.16b
+         shsub v0.4h, v1.4h, v2.4h
+         shsub v0.8h, v1.8h, v2.8h
+         shsub v0.2s, v1.2s, v2.2s
+         shsub v0.4s, v1.4s, v2.4s
+
+// CHECK: shsub v0.8b, v1.8b, v2.8b        // encoding: [0x20,0x24,0x22,0x0e]
+// CHECK: shsub v0.16b, v1.16b, v2.16b     // encoding: [0x20,0x24,0x22,0x4e]
+// CHECK: shsub v0.4h, v1.4h, v2.4h        // encoding: [0x20,0x24,0x62,0x0e]
+// CHECK: shsub v0.8h, v1.8h, v2.8h        // encoding: [0x20,0x24,0x62,0x4e]
+// CHECK: shsub v0.2s, v1.2s, v2.2s        // encoding: [0x20,0x24,0xa2,0x0e]
+// CHECK: shsub v0.4s, v1.4s, v2.4s        // encoding: [0x20,0x24,0xa2,0x4e]
+
+//------------------------------------------------------------------------------
+// Vector Integer Halving Sub (Unsigned)
+//------------------------------------------------------------------------------
+         uhsub v0.8b, v1.8b, v2.8b
+         uhsub v0.16b, v1.16b, v2.16b
+         uhsub v0.4h, v1.4h, v2.4h
+         uhsub v0.8h, v1.8h, v2.8h
+         uhsub v0.2s, v1.2s, v2.2s
+         uhsub v0.4s, v1.4s, v2.4s
+
+// CHECK: uhsub v0.8b, v1.8b, v2.8b        // encoding: [0x20,0x24,0x22,0x2e]
+// CHECK: uhsub v0.16b, v1.16b, v2.16b     // encoding: [0x20,0x24,0x22,0x6e]
+// CHECK: uhsub v0.4h, v1.4h, v2.4h        // encoding: [0x20,0x24,0x62,0x2e]
+// CHECK: uhsub v0.8h, v1.8h, v2.8h        // encoding: [0x20,0x24,0x62,0x6e]
+// CHECK: uhsub v0.2s, v1.2s, v2.2s        // encoding: [0x20,0x24,0xa2,0x2e]
+// CHECK: uhsub v0.4s, v1.4s, v2.4s        // encoding: [0x20,0x24,0xa2,0x6e]
+