Index: lib/Target/WebAssembly/WebAssemblyInstrAtomics.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrAtomics.td
+++ lib/Target/WebAssembly/WebAssemblyInstrAtomics.td
@@ -24,10 +24,8 @@
             Requires<[HasAtomics]>;
 }
 
-let Defs = [ARGUMENTS] in {
 defm ATOMIC_LOAD_I32 : WebAssemblyLoad<I32, "i32.atomic.load", 0xfe10>;
 defm ATOMIC_LOAD_I64 : WebAssemblyLoad<I64, "i64.atomic.load", 0xfe11>;
-} // Defs = [ARGUMENTS]
 
 // Select loads with no constant offset.
 let Predicates = [HasAtomics] in {
@@ -62,13 +60,11 @@
 
 // Extending loads. Note that there are only zero-extending atomic loads, no
 // sign-extending loads.
-let Defs = [ARGUMENTS] in {
 defm ATOMIC_LOAD8_U_I32 : WebAssemblyLoad<I32, "i32.atomic.load8_u", 0xfe12>;
 defm ATOMIC_LOAD16_U_I32 : WebAssemblyLoad<I32, "i32.atomic.load16_u", 0xfe13>;
 defm ATOMIC_LOAD8_U_I64 : WebAssemblyLoad<I64, "i64.atomic.load8_u", 0xfe14>;
 defm ATOMIC_LOAD16_U_I64 : WebAssemblyLoad<I64, "i64.atomic.load16_u", 0xfe15>;
 defm ATOMIC_LOAD32_U_I64 : WebAssemblyLoad<I64, "i64.atomic.load32_u", 0xfe16>;
-} // Defs = [ARGUMENTS]
 
 // Fragments for extending loads. These are different from regular loads because
 // the SDNodes are derived from AtomicSDNode rather than LoadSDNode and
@@ -200,10 +196,8 @@
 // Atomic stores
 //===----------------------------------------------------------------------===//
 
-let Defs = [ARGUMENTS] in {
 defm ATOMIC_STORE_I32 : WebAssemblyStore<I32, "i32.atomic.store", 0xfe17>;
 defm ATOMIC_STORE_I64 : WebAssemblyStore<I64, "i64.atomic.store", 0xfe18>;
-} // Defs = [ARGUMENTS]
 
 // We need an 'atomic' version of store patterns because store and atomic_store
 // nodes have different operand orders:
@@ -263,13 +257,11 @@
 } // Predicates = [HasAtomics]
 
 // Truncating stores.
-let Defs = [ARGUMENTS] in {
 defm ATOMIC_STORE8_I32 : WebAssemblyStore<I32, "i32.atomic.store8", 0xfe19>;
 defm ATOMIC_STORE16_I32 : WebAssemblyStore<I32, "i32.atomic.store16", 0xfe1a>;
 defm ATOMIC_STORE8_I64 : WebAssemblyStore<I64, "i64.atomic.store8", 0xfe1b>;
 defm ATOMIC_STORE16_I64 : WebAssemblyStore<I64, "i64.atomic.store16", 0xfe1c>;
 defm ATOMIC_STORE32_I64 : WebAssemblyStore<I64, "i64.atomic.store32", 0xfe1d>;
-} // Defs = [ARGUMENTS]
 
 // Fragments for truncating stores.
 
@@ -341,8 +333,6 @@
 // Atomic binary read-modify-writes
 //===----------------------------------------------------------------------===//
 
-let Defs = [ARGUMENTS] in {
-
 multiclass WebAssemblyBinRMW<WebAssemblyRegClass rc, string Name, int Opcode> {
   defm "" : I<(outs rc:$dst),
               (ins P2Align:$p2align, offset32_op:$off, I32:$addr, rc:$val),
@@ -430,7 +420,6 @@
   WebAssemblyBinRMW<I64, "i64.atomic.rmw16_u.xchg", 0xfe46>;
 defm ATOMIC_RMW32_U_XCHG_I64 :
   WebAssemblyBinRMW<I64, "i64.atomic.rmw32_u.xchg", 0xfe47>;
-}
 
 // Select binary RMWs with no constant offset.
 class BinRMWPatNoOffset<ValueType ty, PatFrag kind, NI inst> :
@@ -674,8 +663,6 @@
 // Consider adding a pass after instruction selection that optimizes this case
 // if it is frequent.
 
-let Defs = [ARGUMENTS] in {
-
 multiclass WebAssemblyTerRMW<WebAssemblyRegClass rc, string Name, int Opcode> {
   defm "" : I<(outs rc:$dst),
               (ins P2Align:$p2align, offset32_op:$off, I32:$addr, rc:$exp,
@@ -699,7 +686,6 @@
   WebAssemblyTerRMW<I64, "i64.atomic.rmw16_u.cmpxchg", 0xfe4d>;
 defm ATOMIC_RMW32_U_CMPXCHG_I64 :
   WebAssemblyTerRMW<I64, "i64.atomic.rmw32_u.cmpxchg", 0xfe4e>;
-}
 
 // Select ternary RMWs with no constant offset.
 class TerRMWPatNoOffset<ValueType ty, PatFrag kind, NI inst> :
@@ -912,7 +898,6 @@
 // Atomic wait / notify
 //===----------------------------------------------------------------------===//
 
-let Defs = [ARGUMENTS] in {
 let hasSideEffects = 1 in {
 defm ATOMIC_NOTIFY :
   I<(outs I32:$dst),
@@ -935,7 +920,6 @@
     "i64.atomic.wait \t${off}, ${p2align}", 0xfe02>;
 } // mayLoad = 1
 } // hasSideEffects = 1
-} // Defs = [ARGUMENTS]
 
 let Predicates = [HasAtomics] in {
 // Select notifys with no constant offset.
Index: lib/Target/WebAssembly/WebAssemblyInstrCall.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrCall.td
+++ lib/Target/WebAssembly/WebAssemblyInstrCall.td
@@ -15,8 +15,6 @@
 // TODO: addr64: These currently assume the callee address is 32-bit.
 // FIXME: add $type to first call_indirect asmstr (and maybe $flags)
 
-let Defs = [ARGUMENTS] in {
-
 // Call sequence markers. These have an immediate which represents the amount of
 // stack space to allocate or free, which is used for varargs lowering.
 let Uses = [SP32, SP64], Defs = [SP32, SP64], isCodeGenOnly = 1 in {
@@ -118,8 +116,6 @@
                               0x11>;
 } // Uses = [SP32,SP64], isCall = 1
 
-} // Defs = [ARGUMENTS]
-
 // Patterns for matching a direct call to a global address.
 def : Pat<(i32 (WebAssemblycall1 (WebAssemblywrapper tglobaladdr:$callee))),
           (CALL_I32 tglobaladdr:$callee)>;
Index: lib/Target/WebAssembly/WebAssemblyInstrControl.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrControl.td
+++ lib/Target/WebAssembly/WebAssemblyInstrControl.td
@@ -12,8 +12,6 @@
 ///
 //===----------------------------------------------------------------------===//
 
-let Defs = [ARGUMENTS] in {
-
 let isBranch = 1, isTerminator = 1, hasCtrlDep = 1 in {
 // The condition operand is a boolean value which WebAssembly represents as i32.
 defm BR_IF : I<(outs), (ins bb_op:$dst, I32:$cond),
@@ -30,15 +28,11 @@
 } // isBarrier = 1
 } // isBranch = 1, isTerminator = 1, hasCtrlDep = 1
 
-} // Defs = [ARGUMENTS]
-
 def : Pat<(brcond (i32 (setne I32:$cond, 0)), bb:$dst),
           (BR_IF bb_op:$dst, I32:$cond)>;
 def : Pat<(brcond (i32 (seteq I32:$cond, 0)), bb:$dst),
           (BR_UNLESS bb_op:$dst, I32:$cond)>;
 
-let Defs = [ARGUMENTS] in {
-
 // TODO: SelectionDAG's lowering insists on using a pointer as the index for
 // jump tables, so in practice we don't ever use BR_TABLE_I64 in wasm32 mode
 // currently.
@@ -194,5 +188,3 @@
                    [(catchret bb:$dst, bb:$from)], "", 0>;
 }
 }
-
-} // Defs = [ARGUMENTS]
Index: lib/Target/WebAssembly/WebAssemblyInstrConv.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrConv.td
+++ lib/Target/WebAssembly/WebAssemblyInstrConv.td
@@ -13,8 +13,6 @@
 ///
 //===----------------------------------------------------------------------===//
 
-let Defs = [ARGUMENTS] in {
-
 defm I32_WRAP_I64 : I<(outs I32:$dst), (ins I64:$src), (outs), (ins),
                       [(set I32:$dst, (trunc I64:$src))],
                       "i32.wrap/i64\t$dst, $src", "i32.wrap/i64", 0xa7>;
@@ -51,15 +49,11 @@
                             0xc4>;
 } // Predicates = [HasSignExt]
 
-} // defs = [ARGUMENTS]
-
 // Expand a "don't care" extend into zero-extend (chosen over sign-extend
 // somewhat arbitrarily, although it favors popular hardware architectures
 // and is conceptually a simpler operation).
 def : Pat<(i64 (anyext I32:$src)), (I64_EXTEND_U_I32 I32:$src)>;
 
-let Defs = [ARGUMENTS] in {
-
 // Conversion from floating point to integer instructions which don't trap on
 // overflow or invalid.
 defm I32_TRUNC_S_SAT_F32 : I<(outs I32:$dst), (ins F32:$src), (outs), (ins),
@@ -218,5 +212,3 @@
                              [(set F64:$dst, (bitconvert I64:$src))],
                              "f64.reinterpret/i64\t$dst, $src",
                              "f64.reinterpret/i64", 0xbf>;
-
-} // Defs = [ARGUMENTS]
Index: lib/Target/WebAssembly/WebAssemblyInstrExceptRef.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrExceptRef.td
+++ lib/Target/WebAssembly/WebAssemblyInstrExceptRef.td
@@ -12,8 +12,6 @@
 ///
 //===----------------------------------------------------------------------===//
 
-let Defs = [ARGUMENTS] in {
-
 defm SELECT_EXCEPT_REF : I<(outs EXCEPT_REF:$dst),
                            (ins EXCEPT_REF:$lhs, EXCEPT_REF:$rhs, I32:$cond),
                            (outs), (ins),
@@ -23,8 +21,6 @@
                            "except_ref.select\t$dst, $lhs, $rhs, $cond",
                            "except_ref.select", 0x1b>;
 
-} // Defs = [ARGUMENTS]
-
 def : Pat<(select (i32 (setne I32:$cond, 0)), EXCEPT_REF:$lhs, EXCEPT_REF:$rhs),
           (SELECT_EXCEPT_REF EXCEPT_REF:$lhs, EXCEPT_REF:$rhs, I32:$cond)>;
 def : Pat<(select (i32 (seteq I32:$cond, 0)), EXCEPT_REF:$lhs, EXCEPT_REF:$rhs),
Index: lib/Target/WebAssembly/WebAssemblyInstrFloat.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrFloat.td
+++ lib/Target/WebAssembly/WebAssemblyInstrFloat.td
@@ -45,8 +45,6 @@
                 !strconcat("f64.", name), f64Inst>;
 }
 
-let Defs = [ARGUMENTS] in {
-
 let isCommutable = 1 in
 defm ADD : BinaryFP<fadd, "add ", 0x92, 0xa0>;
 defm SUB : BinaryFP<fsub, "sub ", 0x93, 0xa1>;
@@ -69,8 +67,6 @@
 defm TRUNC : UnaryFP<ftrunc, "trunc", 0x8f, 0x9d>;
 defm NEAREST : UnaryFP<fnearbyint, "nearest", 0x90, 0x9e>;
 
-} // Defs = [ARGUMENTS]
-
 // DAGCombine oddly folds casts into the rhs of copysign. Unfold them.
 def : Pat<(fcopysign F64:$lhs, F32:$rhs),
           (COPYSIGN_F64 F64:$lhs, (F64_PROMOTE_F32 F32:$rhs))>;
@@ -81,8 +77,6 @@
 def : Pat<(frint f32:$src), (NEAREST_F32 f32:$src)>;
 def : Pat<(frint f64:$src), (NEAREST_F64 f64:$src)>;
 
-let Defs = [ARGUMENTS] in {
-
 let isCommutable = 1 in {
 defm EQ : ComparisonFP<SETOEQ, "eq  ", 0x5b, 0x61>;
 defm NE : ComparisonFP<SETUNE, "ne  ", 0x5c, 0x62>;
@@ -92,8 +86,6 @@
 defm GT : ComparisonFP<SETOGT, "gt  ", 0x5e, 0x64>;
 defm GE : ComparisonFP<SETOGE, "ge  ", 0x60, 0x66>;
 
-} // Defs = [ARGUMENTS]
-
 // Don't care floating-point comparisons, supported via other comparisons.
 def : Pat<(seteq f32:$lhs, f32:$rhs), (EQ_F32 f32:$lhs, f32:$rhs)>;
 def : Pat<(setne f32:$lhs, f32:$rhs), (NE_F32 f32:$lhs, f32:$rhs)>;
@@ -108,8 +100,6 @@
 def : Pat<(setgt f64:$lhs, f64:$rhs), (GT_F64 f64:$lhs, f64:$rhs)>;
 def : Pat<(setge f64:$lhs, f64:$rhs), (GE_F64 f64:$lhs, f64:$rhs)>;
 
-let Defs = [ARGUMENTS] in {
-
 defm SELECT_F32 : I<(outs F32:$dst), (ins F32:$lhs, F32:$rhs, I32:$cond),
                     (outs), (ins),
                     [(set F32:$dst, (select I32:$cond, F32:$lhs, F32:$rhs))],
@@ -119,8 +109,6 @@
                     [(set F64:$dst, (select I32:$cond, F64:$lhs, F64:$rhs))],
                     "f64.select\t$dst, $lhs, $rhs, $cond", "f64.select", 0x1b>;
 
-} // Defs = [ARGUMENTS]
-
 // ISD::SELECT requires its operand to conform to getBooleanContents, but
 // WebAssembly's select interprets any non-zero value as true, so we can fold
 // a setne with 0 into a select.
Index: lib/Target/WebAssembly/WebAssemblyInstrFormats.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrFormats.td
+++ lib/Target/WebAssembly/WebAssemblyInstrFormats.td
@@ -48,9 +48,11 @@
 multiclass I<dag oops_r, dag iops_r, dag oops_s, dag iops_s,
              list<dag> pattern_r, string asmstr_r = "", string asmstr_s = "",
              bits<32> inst = -1> {
+  let Defs = [ARGUMENTS] in {
   let isCodeGenOnly = 1 in
   def "" : NI<oops_r, iops_r, pattern_r, 0, asmstr_r, inst>;
   def _S : NI<oops_s, iops_s, [], 1, asmstr_s, inst>;
+  } // Defs = [ARGUMENTS]
 }
 
 // For instructions that have no register ops, so both sets are the same.
Index: lib/Target/WebAssembly/WebAssemblyInstrInfo.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrInfo.td
+++ lib/Target/WebAssembly/WebAssemblyInstrInfo.td
@@ -164,7 +164,8 @@
 //===----------------------------------------------------------------------===//
 
 multiclass ARGUMENT<WebAssemblyRegClass vt> {
-  let hasSideEffects = 1, Uses = [ARGUMENTS], isCodeGenOnly = 1 in
+  let hasSideEffects = 1, isCodeGenOnly = 1,
+      Defs = []<Register>, Uses = [ARGUMENTS] in
   defm ARGUMENT_#vt : I<(outs vt:$res), (ins i32imm:$argno),
                         (outs), (ins i32imm:$argno),
                         [(set vt:$res, (WebAssemblyargument timm:$argno))]>;
@@ -175,8 +176,6 @@
 defm "": ARGUMENT<F64>;
 defm "": ARGUMENT<EXCEPT_REF>;
 
-let Defs = [ARGUMENTS] in {
-
 // get_local and set_local are not generated by instruction selection; they
 // are implied by virtual register uses and defs.
 multiclass LOCAL<WebAssemblyRegClass vt> {
@@ -266,8 +265,6 @@
                    "f64.const\t$res, $imm", "f64.const\t$imm", 0x44>;
 } // isMoveImm = 1, isAsCheapAsAMove = 1, isReMaterializable = 1
 
-} // Defs = [ARGUMENTS]
-
 def : Pat<(i32 (WebAssemblywrapper tglobaladdr:$addr)),
           (CONST_I32 tglobaladdr:$addr)>;
 def : Pat<(i32 (WebAssemblywrapper texternalsym:$addr)),
Index: lib/Target/WebAssembly/WebAssemblyInstrInteger.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrInteger.td
+++ lib/Target/WebAssembly/WebAssemblyInstrInteger.td
@@ -45,9 +45,6 @@
                 !strconcat("i64.", name), i64Inst>;
 }
 
-
-let Defs = [ARGUMENTS] in {
-
 // The spaces after the names are for aesthetic purposes only, to make
 // operands line up vertically after tab expansion.
 let isCommutable = 1 in
@@ -97,16 +94,12 @@
                  [(set I32:$dst, (setcc I64:$src, 0, SETEQ))],
                  "i64.eqz \t$dst, $src", "i64.eqz", 0x50>;
 
-} // Defs = [ARGUMENTS]
-
 // Optimize away an explicit mask on a rotate count.
 def : Pat<(rotl I32:$lhs, (and I32:$rhs, 31)), (ROTL_I32 I32:$lhs, I32:$rhs)>;
 def : Pat<(rotr I32:$lhs, (and I32:$rhs, 31)), (ROTR_I32 I32:$lhs, I32:$rhs)>;
 def : Pat<(rotl I64:$lhs, (and I64:$rhs, 63)), (ROTL_I64 I64:$lhs, I64:$rhs)>;
 def : Pat<(rotr I64:$lhs, (and I64:$rhs, 63)), (ROTR_I64 I64:$lhs, I64:$rhs)>;
 
-let Defs = [ARGUMENTS] in {
-
 defm SELECT_I32 : I<(outs I32:$dst), (ins I32:$lhs, I32:$rhs, I32:$cond),
                     (outs), (ins),
                     [(set I32:$dst, (select I32:$cond, I32:$lhs, I32:$rhs))],
@@ -116,8 +109,6 @@
                     [(set I64:$dst, (select I32:$cond, I64:$lhs, I64:$rhs))],
                     "i64.select\t$dst, $lhs, $rhs, $cond", "i64.select", 0x1b>;
 
-} // Defs = [ARGUMENTS]
-
 // ISD::SELECT requires its operand to conform to getBooleanContents, but
 // WebAssembly's select interprets any non-zero value as true, so we can fold
 // a setne with 0 into a select.
Index: lib/Target/WebAssembly/WebAssemblyInstrMemory.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrMemory.td
+++ lib/Target/WebAssembly/WebAssemblyInstrMemory.td
@@ -53,8 +53,6 @@
 // We don't need a regPlusES because external symbols never have constant
 // offsets folded into them, so we can just use add.
 
-let Defs = [ARGUMENTS] in {
-
 // Defines atomic and non-atomic loads, regular and extending.
 multiclass WebAssemblyLoad<WebAssemblyRegClass rc, string Name, int Opcode> {
   let mayLoad = 1 in
@@ -73,8 +71,6 @@
 defm LOAD_F32 : WebAssemblyLoad<F32, "f32.load", 0x2a>;
 defm LOAD_F64 : WebAssemblyLoad<F64, "f64.load", 0x2b>;
 
-} // Defs = [ARGUMENTS]
-
 // Select loads with no constant offset.
 class LoadPatNoOffset<ValueType ty, PatFrag kind, NI inst> :
   Pat<(ty (kind I32:$addr)), (inst 0, 0, I32:$addr)>;
@@ -144,8 +140,6 @@
 def : LoadPatExternSymOffOnly<f32, load, LOAD_F32>;
 def : LoadPatExternSymOffOnly<f64, load, LOAD_F64>;
 
-let Defs = [ARGUMENTS] in {
-
 // Extending load.
 defm LOAD8_S_I32 : WebAssemblyLoad<I32, "i32.load8_s", 0x2c>;
 defm LOAD8_U_I32 : WebAssemblyLoad<I32, "i32.load8_u", 0x2d>;
@@ -158,8 +152,6 @@
 defm LOAD32_S_I64 : WebAssemblyLoad<I64, "i64.load32_s", 0x34>;
 defm LOAD32_U_I64 : WebAssemblyLoad<I64, "i64.load32_u", 0x35>;
 
-} // Defs = [ARGUMENTS]
-
 // Select extending loads with no constant offset.
 def : LoadPatNoOffset<i32, sextloadi8, LOAD8_S_I32>;
 def : LoadPatNoOffset<i32, zextloadi8, LOAD8_U_I32>;
@@ -303,9 +295,6 @@
 def : LoadPatExternSymOffOnly<i64, extloadi16, LOAD16_U_I64>;
 def : LoadPatExternSymOffOnly<i64, extloadi32, LOAD32_U_I64>;
 
-
-let Defs = [ARGUMENTS] in {
-
 // Defines atomic and non-atomic stores, regular and truncating
 multiclass WebAssemblyStore<WebAssemblyRegClass rc, string Name, int Opcode> {
   let mayStore = 1 in
@@ -323,8 +312,6 @@
 defm STORE_F32  : WebAssemblyStore<F32, "f32.store", 0x38>;
 defm STORE_F64  : WebAssemblyStore<F64, "f64.store", 0x39>;
 
-} // Defs = [ARGUMENTS]
-
 // Select stores with no constant offset.
 class StorePatNoOffset<ValueType ty, PatFrag node, NI inst> :
   Pat<(node ty:$val, I32:$addr), (inst 0, 0, I32:$addr, ty:$val)>;
@@ -389,9 +376,6 @@
 def : StorePatExternSymOffOnly<f32, store, STORE_F32>;
 def : StorePatExternSymOffOnly<f64, store, STORE_F64>;
 
-
-let Defs = [ARGUMENTS] in {
-
 // Truncating store.
 defm STORE8_I32 : WebAssemblyStore<I32, "i32.store8", 0x3a>;
 defm STORE16_I32 : WebAssemblyStore<I32, "i32.store16", 0x3b>;
@@ -399,8 +383,6 @@
 defm STORE16_I64 : WebAssemblyStore<I64, "i64.store16", 0x3d>;
 defm STORE32_I64 : WebAssemblyStore<I64, "i64.store32", 0x3e>;
 
-} // Defs = [ARGUMENTS]
-
 // Select truncating stores with no constant offset.
 def : StorePatNoOffset<i32, truncstorei8, STORE8_I32>;
 def : StorePatNoOffset<i32, truncstorei16, STORE16_I32>;
@@ -448,8 +430,6 @@
 def : StorePatExternSymOffOnly<i64, truncstorei16, STORE16_I64>;
 def : StorePatExternSymOffOnly<i64, truncstorei32, STORE32_I64>;
 
-let Defs = [ARGUMENTS] in {
-
 // Current memory size.
 defm MEMORY_SIZE_I32 : I<(outs I32:$dst), (ins i32imm:$flags),
                          (outs), (ins i32imm:$flags),
@@ -493,8 +473,6 @@
                          0x40>,
                        Requires<[HasAddr32]>;
 
-} // Defs = [ARGUMENTS]
-
 def : Pat<(int_wasm_current_memory),
           (CURRENT_MEMORY_I32 0)>;
 def : Pat<(int_wasm_grow_memory I32:$delta),
Index: lib/Target/WebAssembly/WebAssemblyInstrSIMD.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrSIMD.td
+++ lib/Target/WebAssembly/WebAssemblyInstrSIMD.td
@@ -55,7 +55,6 @@
                                   "v128.const\t"#args, 0>;
 }
 
-let Defs = [ARGUMENTS] in {
 defm "" : ConstVec<v16i8,
                    (ins vec_i8imm_op:$i0, vec_i8imm_op:$i1,
                         vec_i8imm_op:$i2, vec_i8imm_op:$i3,
@@ -100,7 +99,6 @@
                   (ins f64imm_op:$i0, f64imm_op:$i1),
                   (build_vector (f64 fpimm:$i0), (f64 fpimm:$i1)),
                   "$i0, $i1">;
-} // Defs = [ARGUMENTS]
 
 // Create vector with identical lanes: splat
 def splat2 : PatFrag<(ops node:$x), (build_vector node:$x, node:$x)>;