Index: lib/Target/R600/SIDefines.h
===================================================================
--- lib/Target/R600/SIDefines.h
+++ lib/Target/R600/SIDefines.h
@@ -12,6 +12,7 @@
 #define SIDEFINES_H_
 
 namespace SIInstrFlags {
+// This needs to be kept in sync with the field bits in InstSI.
 enum {
   MIMG = 1 << 3,
   SMRD = 1 << 4,
@@ -19,7 +20,9 @@
   VOP2 = 1 << 6,
   VOP3 = 1 << 7,
   VOPC = 1 << 8,
-  SALU = 1 << 9
+  SALU = 1 << 9,
+  MUBUF = 1 << 10,
+  MTBUF = 1 << 11
 };
 }
 
Index: lib/Target/R600/SIInstrFormats.td
===================================================================
--- lib/Target/R600/SIInstrFormats.td
+++ lib/Target/R600/SIInstrFormats.td
@@ -24,7 +24,10 @@
   field bits<1> VOP3 = 0;
   field bits<1> VOPC = 0;
   field bits<1> SALU = 0;
+  field bits<1> MUBUF = 0;
+  field bits<1> MTBUF = 0;
 
+  // These need to be kept in sync with the enum in SIInstrFlags.
   let TSFlags{0} = VM_CNT;
   let TSFlags{1} = EXP_CNT;
   let TSFlags{2} = LGKM_CNT;
@@ -35,6 +38,8 @@
   let TSFlags{7} = VOP3;
   let TSFlags{8} = VOPC;
   let TSFlags{9} = SALU;
+  let TSFlags{10} = MUBUF;
+  let TSFlags{11} = MTBUF;
 }
 
 class Enc32 {
@@ -503,6 +508,7 @@
 
   let VM_CNT = 1;
   let EXP_CNT = 1;
+  let MUBUF = 1;
 
   let neverHasSideEffects = 1;
   let UseNamedOperandTable = 1;
@@ -513,6 +519,7 @@
 
   let VM_CNT = 1;
   let EXP_CNT = 1;
+  let MTBUF = 1;
 
   let neverHasSideEffects = 1;
 }
Index: lib/Target/R600/SIInstrInfo.h
===================================================================
--- lib/Target/R600/SIInstrInfo.h
+++ lib/Target/R600/SIInstrInfo.h
@@ -109,6 +109,8 @@
   bool isDS(uint16_t Opcode) const LLVM_READONLY;
   bool isMIMG(uint16_t Opcode) const LLVM_READONLY;
   bool isSMRD(uint16_t Opcode) const LLVM_READONLY;
+  bool isMUBUF(uint16_t Opcode) const LLVM_READONLY;
+  bool isMTBUF(uint16_t Opcode) const LLVM_READONLY;
   bool isVOP1(uint16_t Opcode) const LLVM_READONLY;
   bool isVOP2(uint16_t Opcode) const LLVM_READONLY;
   bool isVOP3(uint16_t Opcode) const LLVM_READONLY;
Index: lib/Target/R600/SIInstrInfo.cpp
===================================================================
--- lib/Target/R600/SIInstrInfo.cpp
+++ lib/Target/R600/SIInstrInfo.cpp
@@ -557,6 +557,14 @@
   return get(Opcode).TSFlags & SIInstrFlags::SMRD;
 }
 
+bool SIInstrInfo::isMUBUF(uint16_t Opcode) const {
+  return get(Opcode).TSFlags & SIInstrFlags::MUBUF;
+}
+
+bool SIInstrInfo::isMTBUF(uint16_t Opcode) const {
+  return get(Opcode).TSFlags & SIInstrFlags::MTBUF;
+}
+
 bool SIInstrInfo::isVOP1(uint16_t Opcode) const {
   return get(Opcode).TSFlags & SIInstrFlags::VOP1;
 }