Index: lib/Target/AMDGPU/AMDGPU.td
===================================================================
--- lib/Target/AMDGPU/AMDGPU.td
+++ lib/Target/AMDGPU/AMDGPU.td
@@ -695,6 +695,9 @@
 def HasD16LoadStore : Predicate<"Subtarget->hasD16LoadStore()">,
   AssemblerPredicate<"FeatureGFX9Insts">;
 
+def HasDSAddTid : Predicate<"Subtarget->getGeneration() >= AMDGPUSubtarget::GFX9">,
+  AssemblerPredicate<"FeatureGFX9Insts">;
+
 def HasAddNoCarryInsts : Predicate<"Subtarget->hasAddNoCarryInsts()">,
   AssemblerPredicate<"FeatureAddNoCarryInsts">;
 
Index: lib/Target/AMDGPU/DSInstructions.td
===================================================================
--- lib/Target/AMDGPU/DSInstructions.td
+++ lib/Target/AMDGPU/DSInstructions.td
@@ -291,6 +291,10 @@
 def DS_WRITE_B16_D16_HI : DS_1A1D_NORET<"ds_write_b16_d16_hi">;
 }
 
+let SubtargetPredicate = HasDSAddTid in {
+def DS_WRITE_ADDTID_B32 : DS_1A1D_NORET<"ds_write_addtid_b32">;
+}
+
 }
 
 def DS_MSKOR_B32      : DS_1A2D_NORET<"ds_mskor_b32">;
@@ -471,6 +475,10 @@
 def DS_READ_U16_D16 : DS_1A_RET<"ds_read_u16_d16">;
 def DS_READ_U16_D16_HI : DS_1A_RET<"ds_read_u16_d16_hi">;
 }
+
+let SubtargetPredicate = HasDSAddTid in {
+def DS_READ_ADDTID_B32 : DS_1A_RET<"ds_read_addtid_b32">;
+}
 }
 
 def DS_CONSUME       : DS_0A_RET<"ds_consume">;
@@ -849,6 +857,7 @@
 def DS_GWS_SEMA_BR_vi     : DS_Real_vi<0x9b, DS_GWS_SEMA_BR>;
 def DS_GWS_SEMA_P_vi      : DS_Real_vi<0x9c, DS_GWS_SEMA_P>;
 def DS_GWS_BARRIER_vi     : DS_Real_vi<0x9d, DS_GWS_BARRIER>;
+def DS_WRITE_ADDTID_B32_vi : DS_Real_vi<0x1d, DS_WRITE_ADDTID_B32>;
 def DS_WRITE_B8_vi        : DS_Real_vi<0x1e, DS_WRITE_B8>;
 def DS_WRITE_B16_vi       : DS_Real_vi<0x1f, DS_WRITE_B16>;
 def DS_ADD_RTN_U32_vi     : DS_Real_vi<0x20, DS_ADD_RTN_U32>;
@@ -880,6 +889,7 @@
 def DS_READ_U8_vi         : DS_Real_vi<0x3a, DS_READ_U8>;
 def DS_READ_I16_vi        : DS_Real_vi<0x3b, DS_READ_I16>;
 def DS_READ_U16_vi        : DS_Real_vi<0x3c, DS_READ_U16>;
+def DS_READ_ADDTID_B32_vi : DS_Real_vi<0xb6, DS_READ_ADDTID_B32>;
 def DS_CONSUME_vi         : DS_Real_vi<0xbd, DS_CONSUME>;
 def DS_APPEND_vi          : DS_Real_vi<0xbe, DS_APPEND>;
 def DS_ORDERED_COUNT_vi   : DS_Real_vi<0xbf, DS_ORDERED_COUNT>;
Index: test/MC/AMDGPU/ds-gfx9.s
===================================================================
--- test/MC/AMDGPU/ds-gfx9.s
+++ test/MC/AMDGPU/ds-gfx9.s
@@ -32,3 +32,11 @@
 ds_write_b16_d16_hi v8, v2
 // VI-ERR: error: instruction not supported on this GPU
 // GFX9: ds_write_b16_d16_hi v8, v2      ; encoding: [0x00,0x00,0xaa,0xd8,0x08,0x02,0x00,0x00]
+
+ds_write_addtid_b32 v8, v2
+// VI-ERR: error: instruction not supported on this GPU
+// GFX9: ds_write_addtid_b32 v8, v2      ; encoding: [0x00,0x00,0x3a,0xd8,0x08,0x02,0x00,0x00]
+
+ds_read_addtid_b32 v8, v2
+// VI-ERR: error: instruction not supported on this GPU
+// GFX9: ds_read_addtid_b32 v8, v2       ; encoding: [0x00,0x00,0x6c,0xd9,0x02,0x00,0x00,0x08]