diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
index 2ea3760b923d..b8ac85943eb7 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
@@ -176,14 +176,14 @@ void WebAssemblyAsmPrinter::EmitInstruction(const MachineInstr *MI) {
   LLVM_DEBUG(dbgs() << "EmitInstruction: " << *MI << '\n');
 
   switch (MI->getOpcode()) {
-  case WebAssembly::ARGUMENT_I32:
-  case WebAssembly::ARGUMENT_I32_S:
-  case WebAssembly::ARGUMENT_I64:
-  case WebAssembly::ARGUMENT_I64_S:
-  case WebAssembly::ARGUMENT_F32:
-  case WebAssembly::ARGUMENT_F32_S:
-  case WebAssembly::ARGUMENT_F64:
-  case WebAssembly::ARGUMENT_F64_S:
+  case WebAssembly::ARGUMENT_i32:
+  case WebAssembly::ARGUMENT_i32_S:
+  case WebAssembly::ARGUMENT_i64:
+  case WebAssembly::ARGUMENT_i64_S:
+  case WebAssembly::ARGUMENT_f32:
+  case WebAssembly::ARGUMENT_f32_S:
+  case WebAssembly::ARGUMENT_f64:
+  case WebAssembly::ARGUMENT_f64_S:
   case WebAssembly::ARGUMENT_v16i8:
   case WebAssembly::ARGUMENT_v16i8_S:
   case WebAssembly::ARGUMENT_v8i16:
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp
index 8dc535445d6f..0be4f2283476 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp
@@ -646,19 +646,19 @@ bool WebAssemblyFastISel::fastLowerArguments() {
     case MVT::i8:
     case MVT::i16:
     case MVT::i32:
-      Opc = WebAssembly::ARGUMENT_I32;
+      Opc = WebAssembly::ARGUMENT_i32;
       RC = &WebAssembly::I32RegClass;
       break;
     case MVT::i64:
-      Opc = WebAssembly::ARGUMENT_I64;
+      Opc = WebAssembly::ARGUMENT_i64;
       RC = &WebAssembly::I64RegClass;
       break;
     case MVT::f32:
-      Opc = WebAssembly::ARGUMENT_F32;
+      Opc = WebAssembly::ARGUMENT_f32;
       RC = &WebAssembly::F32RegClass;
       break;
     case MVT::f64:
-      Opc = WebAssembly::ARGUMENT_F64;
+      Opc = WebAssembly::ARGUMENT_f64;
       RC = &WebAssembly::F64RegClass;
       break;
     case MVT::v16i8:
@@ -686,7 +686,7 @@ bool WebAssemblyFastISel::fastLowerArguments() {
       RC = &WebAssembly::V128RegClass;
       break;
     case MVT::ExceptRef:
-      Opc = WebAssembly::ARGUMENT_EXCEPT_REF;
+      Opc = WebAssembly::ARGUMENT_ExceptRef;
       RC = &WebAssembly::EXCEPT_REFRegClass;
       break;
     default:
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td b/llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td
index 9e1409cf90e6..8d98510c67d9 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td
@@ -163,18 +163,18 @@ include "WebAssemblyInstrFormats.td"
 // Additional instructions.
 //===----------------------------------------------------------------------===//
 
-multiclass ARGUMENT<WebAssemblyRegClass vt> {
+multiclass ARGUMENT<WebAssemblyRegClass reg, ValueType vt> {
   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:$argno))]>;
+  defm ARGUMENT_#vt :
+    I<(outs reg:$res), (ins i32imm:$argno), (outs), (ins i32imm:$argno),
+      [(set (vt reg:$res), (WebAssemblyargument timm:$argno))]>;
 }
-defm "": ARGUMENT<I32>;
-defm "": ARGUMENT<I64>;
-defm "": ARGUMENT<F32>;
-defm "": ARGUMENT<F64>;
-defm "": ARGUMENT<EXCEPT_REF>;
+defm "": ARGUMENT<I32, i32>;
+defm "": ARGUMENT<I64, i64>;
+defm "": ARGUMENT<F32, f32>;
+defm "": ARGUMENT<F64, f64>;
+defm "": ARGUMENT<EXCEPT_REF, ExceptRef>;
 
 // get_local and set_local are not generated by instruction selection; they
 // are implied by virtual register uses and defs.
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyInstrSIMD.td b/llvm/lib/Target/WebAssembly/WebAssemblyInstrSIMD.td
index b575a039ae0f..1eb38588c81a 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyInstrSIMD.td
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyInstrSIMD.td
@@ -21,21 +21,12 @@ multiclass SIMD_I<dag oops_r, dag iops_r, dag oops_s, dag iops_s,
             Requires<[HasSIMD128]>;
 }
 
-multiclass SIMD_ARGUMENT<ValueType vt> {
-  let hasSideEffects = 1, isCodeGenOnly = 1,
-      Defs = []<Register>, Uses = [ARGUMENTS] in
-  defm ARGUMENT_#vt : SIMD_I<(outs V128:$res), (ins i32imm:$argno),
-                             (outs), (ins i32imm:$argno),
-                             [(set (vt V128:$res),
-                                  (WebAssemblyargument timm:$argno))]>;
-}
-
-defm "": SIMD_ARGUMENT<v16i8>;
-defm "": SIMD_ARGUMENT<v8i16>;
-defm "": SIMD_ARGUMENT<v4i32>;
-defm "": SIMD_ARGUMENT<v2i64>;
-defm "": SIMD_ARGUMENT<v4f32>;
-defm "": SIMD_ARGUMENT<v2f64>;
+defm "" : ARGUMENT<V128, v16i8>;
+defm "" : ARGUMENT<V128, v8i16>;
+defm "" : ARGUMENT<V128, v4i32>;
+defm "" : ARGUMENT<V128, v2i64>;
+defm "" : ARGUMENT<V128, v4f32>;
+defm "" : ARGUMENT<V128, v2f64>;
 
 // Constrained immediate argument types
 foreach SIZE = [8, 16] in
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
index a25ec7cf4c2a..ada6fb9a96d7 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
@@ -27,14 +27,14 @@ const char *const WebAssembly::PersonalityWrapperFn =
 
 bool WebAssembly::isArgument(const MachineInstr &MI) {
   switch (MI.getOpcode()) {
-  case WebAssembly::ARGUMENT_I32:
-  case WebAssembly::ARGUMENT_I32_S:
-  case WebAssembly::ARGUMENT_I64:
-  case WebAssembly::ARGUMENT_I64_S:
-  case WebAssembly::ARGUMENT_F32:
-  case WebAssembly::ARGUMENT_F32_S:
-  case WebAssembly::ARGUMENT_F64:
-  case WebAssembly::ARGUMENT_F64_S:
+  case WebAssembly::ARGUMENT_i32:
+  case WebAssembly::ARGUMENT_i32_S:
+  case WebAssembly::ARGUMENT_i64:
+  case WebAssembly::ARGUMENT_i64_S:
+  case WebAssembly::ARGUMENT_f32:
+  case WebAssembly::ARGUMENT_f32_S:
+  case WebAssembly::ARGUMENT_f64:
+  case WebAssembly::ARGUMENT_f64_S:
   case WebAssembly::ARGUMENT_v16i8:
   case WebAssembly::ARGUMENT_v16i8_S:
   case WebAssembly::ARGUMENT_v8i16: