Index: llvm/trunk/lib/Target/AMDGPU/SIDefines.h
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIDefines.h
+++ llvm/trunk/lib/Target/AMDGPU/SIDefines.h
@@ -99,7 +99,10 @@
   FPAtomic = UINT64_C(1) << 53,
 
   // Is a MFMA instruction.
-  IsMAI = UINT64_C(1) << 54
+  IsMAI = UINT64_C(1) << 54,
+
+  // Is a DOT instruction.
+  IsDOT = UINT64_C(1) << 55
 };
 
 // v_cmp_class_* etc. use a 10-bit mask for what operation is checked.
Index: llvm/trunk/lib/Target/AMDGPU/SIInstrFormats.td
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIInstrFormats.td
+++ llvm/trunk/lib/Target/AMDGPU/SIInstrFormats.td
@@ -124,6 +124,9 @@
   // This bit indicates that this is one of MFMA instructions.
   field bit IsMAI = 0;
 
+  // This bit indicates that this is one of DOT instructions.
+  field bit IsDOT = 0;
+
   // These need to be kept in sync with the enum in SIInstrFlags.
   let TSFlags{0} = SALU;
   let TSFlags{1} = VALU;
@@ -189,6 +192,8 @@
 
   let TSFlags{54} = IsMAI;
 
+  let TSFlags{55} = IsDOT;
+
   let SchedRW = [Write32Bit];
 
   field bits<1> DisableSIDecoder = 0;
Index: llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.h
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.h
+++ llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.h
@@ -578,6 +578,14 @@
     return get(Opcode).TSFlags & SIInstrFlags::IsMAI;
   }
 
+  static bool isDOT(const MachineInstr &MI) {
+    return MI.getDesc().TSFlags & SIInstrFlags::IsDOT;
+  }
+
+  bool isDOT(uint16_t Opcode) const {
+    return get(Opcode).TSFlags & SIInstrFlags::IsDOT;
+  }
+
   static bool isScalarUnit(const MachineInstr &MI) {
     return MI.getDesc().TSFlags & (SIInstrFlags::SALU | SIInstrFlags::SMRD);
   }
Index: llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td
+++ llvm/trunk/lib/Target/AMDGPU/SIInstrInfo.td
@@ -2139,6 +2139,7 @@
   field int NeedPatGen = PatGenMode.NoPattern;
 
   field bit IsMAI = 0;
+  field bit IsDOT = 0;
 
   field Operand Src0PackedMod = !if(HasSrc0FloatMods, PackedF16InputMods, PackedI16InputMods);
   field Operand Src1PackedMod = !if(HasSrc1FloatMods, PackedF16InputMods, PackedI16InputMods);
Index: llvm/trunk/lib/Target/AMDGPU/VOP2Instructions.td
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/VOP2Instructions.td
+++ llvm/trunk/lib/Target/AMDGPU/VOP2Instructions.td
@@ -653,7 +653,8 @@
 let Constraints = "$vdst = $src2",
       DisableEncoding="$src2",
       isConvertibleToThreeAddress = 1,
-      isCommutable = 1 in {
+      isCommutable = 1,
+      IsDOT = 1 in {
   let SubtargetPredicate = HasDot5Insts in
     defm V_DOT2C_F32_F16 : VOP2Inst_e32<"v_dot2c_f32_f16", VOP_DOT_ACC_F32_V2F16>;
   let SubtargetPredicate = HasDot6Insts in
Index: llvm/trunk/lib/Target/AMDGPU/VOP3PInstructions.td
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/VOP3PInstructions.td
+++ llvm/trunk/lib/Target/AMDGPU/VOP3PInstructions.td
@@ -261,6 +261,7 @@
   let SubtargetPredicate = !cast<VOP_Pseudo>(Inst).SubtargetPredicate;
 }
 
+let IsDOT = 1 in {
 let SubtargetPredicate = HasDot2Insts in {
 
 def V_DOT2_F32_F16 : VOP3PInst<"v_dot2_f32_f16", VOP3_Profile<VOP_F32_V2F16_V2F16_F32>>;
@@ -277,6 +278,7 @@
 def V_DOT8_I32_I4  : VOP3PInst<"v_dot8_i32_i4", VOP3_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED>>;
 
 } // End SubtargetPredicate = HasDot1Insts
+} // End let IsDOT = 1
 
 multiclass DotPats<SDPatternOperator dot_op,
                    VOP3PInst dot_inst> {