diff --git a/llvm/lib/Target/AMDGPU/AMDGPU.td b/llvm/lib/Target/AMDGPU/AMDGPU.td
--- a/llvm/lib/Target/AMDGPU/AMDGPU.td
+++ b/llvm/lib/Target/AMDGPU/AMDGPU.td
@@ -1264,6 +1264,9 @@
 def HasMAIInsts : Predicate<"Subtarget->hasMAIInsts()">,
   AssemblerPredicate<(all_of FeatureMAIInsts)>;
 
+def HasSMemRealTime : Predicate<"Subtarget->hasSMemRealTime()">,
+  AssemblerPredicate<(all_of FeatureSMemRealTime)>;
+
 def HasSMemTimeInst : Predicate<"Subtarget->hasSMemTimeInst()">,
   AssemblerPredicate<(all_of FeatureSMemTimeInst)>;
 
diff --git a/llvm/lib/Target/AMDGPU/SMInstructions.td b/llvm/lib/Target/AMDGPU/SMInstructions.td
--- a/llvm/lib/Target/AMDGPU/SMInstructions.td
+++ b/llvm/lib/Target/AMDGPU/SMInstructions.td
@@ -332,7 +332,6 @@
 def S_DCACHE_WB     : SM_Inval_Pseudo <"s_dcache_wb", int_amdgcn_s_dcache_wb>;
 def S_DCACHE_WB_VOL : SM_Inval_Pseudo <"s_dcache_wb_vol", int_amdgcn_s_dcache_wb_vol>;
 } // End OtherPredicates = [HasScalarStores]
-def S_MEMREALTIME   : SM_Time_Pseudo <"s_memrealtime", int_amdgcn_s_memrealtime>;
 
 defm S_ATC_PROBE        : SM_Pseudo_Probe <"s_atc_probe", SReg_64>;
 let is_buffer = 1 in {
@@ -340,6 +339,9 @@
 }
 } // SubtargetPredicate = isGFX8Plus
 
+let SubtargetPredicate = HasSMemRealTime in
+def S_MEMREALTIME   : SM_Time_Pseudo <"s_memrealtime", int_amdgcn_s_memrealtime>;
+
 let SubtargetPredicate = isGFX10Plus in
 def S_GL1_INV : SM_Inval_Pseudo<"s_gl1_inv">;
 let SubtargetPredicate = HasGetWaveIdInst in